{"id":105936,"date":"2024-05-02T20:39:46","date_gmt":"2024-05-03T03:39:46","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=105936"},"modified":"2025-12-18T16:32:36","modified_gmt":"2025-12-19T00:32:36","slug":"what-is-a-bms-reset-when-and-how-to-do-it","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/what-is-a-bms-reset-when-and-how-to-do-it\/","title":{"rendered":"What Is a BMS Reset for Electric Vehicles? When and How to Do It"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 6<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column105936_7e41af-71 > .kt-inside-inner-col,.kadence-column105936_7e41af-71 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column105936_7e41af-71 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column105936_7e41af-71 > .kt-inside-inner-col{flex-direction:column;}.kadence-column105936_7e41af-71 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column105936_7e41af-71 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column105936_7e41af-71{position:relative;}@media all and (max-width: 1024px){.kadence-column105936_7e41af-71 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column105936_7e41af-71 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column105936_7e41af-71 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-bc9557  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-fb429e\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading105936_ee2efb-3c, .wp-block-kadence-advancedheading.kt-adv-heading105936_ee2efb-3c[data-kb-block=\"kb-adv-heading105936_ee2efb-3c\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading105936_ee2efb-3c mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading105936_ee2efb-3c[data-kb-block=\"kb-adv-heading105936_ee2efb-3c\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading105936_ee2efb-3c img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading105936_ee2efb-3c[data-kb-block=\"kb-adv-heading105936_ee2efb-3c\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading105936_ee2efb-3c summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading105936_ee2efb-3c\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>BMS stands for &ldquo;Battery Management System.&rdquo; It&rsquo;s the assembly that houses and keeps the batteries operational.<\/li>\n\n\n\n<li>The BMS monitors battery levels, optimizes battery performance, and controls battery temperature.<\/li>\n\n\n\n<li>A BMS reset restores the BMS to its default settings to make sure it works as intended.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Battery management systems for <a href=\"https:\/\/carparts.com\/ev\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" aria-label=\"electric vehicles\">electric vehicles<\/a> play a huge role in keeping EVs operational. They keep the batteries in good condition to maximize the vehicle&rsquo;s performance.<\/p>\n\n\n\n<p>But what exactly does this system do, how does it work, and what makes resetting it so important?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does &ldquo;BMS&rdquo; Stand For?<\/h2>\n\n\n\n<p>The BMS stands for &ldquo;Battery Management System&rdquo;. It&rsquo;s an assembly that contains the <a href=\"https:\/\/www.carparts.com\/hybrid-drive-battery\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"batteries\">batteries<\/a> that power an electric vehicle and performs various functions to keep the battery operational, including the following:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Monitoring battery levels<\/li>\n\n\n\n<li>Stabilizing batteries to prevent them from overheating<\/li>\n\n\n\n<li>Protecting the battery from damage<\/li>\n\n\n\n<li>Optimizing battery performance<\/li>\n\n\n\n<li>Allocating battery power to different parts of the vehicle<\/li>\n<\/ul>\n\n\n\n<p>Drivers need to pay close attention to the BMS because it tracks the overall state of health (SOC) of a battery.<\/p>\n\n\n\n<p>The BMS uses sensors that monitor the current, voltage, temperature, and state of charge of the battery (SOC). Then, it adjusts and allocates how much charge the battery takes in and puts out based on its findings. It actively protects the battery against overcharging, deep discharge, overheating, and excessive current draw to prevent damage to the battery.<\/p>\n\n\n\n<p>The system also sets the optimum range and parameters under which the battery should operate. The BMS checks to make sure all cells in a battery pack charge and discharge evenly and flags bad cells. The BMS controls the heating or cooling systems within the battery to keep it operating within its ideal temperature range.<\/p>\n\n\n\n<p>It also generates reports on the battery&rsquo;s status and performance. Additionally, it can limit the vehicle&rsquo;s power output or put the car in fail-safe mode to minimize risks if a fault is detected.<\/p>\n\n\n<style>.kadence-column105936_1e70a3-2b > .kt-inside-inner-col,.kadence-column105936_1e70a3-2b > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column105936_1e70a3-2b > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column105936_1e70a3-2b > .kt-inside-inner-col{flex-direction:column;}.kadence-column105936_1e70a3-2b > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column105936_1e70a3-2b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column105936_1e70a3-2b{position:relative;}@media all and (max-width: 1024px){.kadence-column105936_1e70a3-2b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column105936_1e70a3-2b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column105936_1e70a3-2b kb-section-dir-vertical kb-section-sm-dir-vertical inner-column-1 pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>.kb-row-layout-id105936_cb9270-e9 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id105936_cb9270-e9 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id105936_cb9270-e9 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:20px;padding-right:32px;padding-bottom:20px;padding-left:16px;grid-template-columns:minmax(0, calc(10% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)))minmax(0, calc(90% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)));}.kb-row-layout-id105936_cb9270-e9 > .kt-row-layout-overlay{opacity:0.00;}.kb-row-layout-id105936_cb9270-e9 .kt-row-layout-bottom-sep{height:100px;}.kb-row-layout-id105936_cb9270-e9 .kt-row-layout-bottom-sep svg{width:100%;}.kb-row-layout-id105936_cb9270-e9 .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}.kb-row-layout-id105936_cb9270-e9 .kt-row-layout-top-sep{height:100px;}.kb-row-layout-id105936_cb9270-e9 .kt-row-layout-top-sep svg{width:100%;}.kb-row-layout-id105936_cb9270-e9 .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){.kb-row-layout-id105936_cb9270-e9 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){.kb-row-layout-id105936_cb9270-e9 .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){.kb-row-layout-id105936_cb9270-e9 .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){.kb-row-layout-id105936_cb9270-e9 > .kt-row-column-wrap{padding-top:28px;padding-right:16px;padding-bottom:25px;padding-left:16px;grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}.kb-row-layout-id105936_cb9270-e9 .kt-row-layout-bottom-sep{height:px;}.kb-row-layout-id105936_cb9270-e9 .kt-row-layout-bottom-sep svg{width:%;}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id105936_cb9270-e9 alignnone pro-tip-wrap wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-right-golden kt-tab-layout-right-golden kt-mobile-layout-right-golden kt-row-valign-top\">\n<style>.kadence-column105936_dd09f8-5e > .kt-inside-inner-col{display:flex;}.kadence-column105936_dd09f8-5e > .kt-inside-inner-col{min-height:45px;}.kadence-column105936_dd09f8-5e > .kt-inside-inner-col,.kadence-column105936_dd09f8-5e > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column105936_dd09f8-5e > .kt-inside-inner-col{row-gap:0px;column-gap:0px;}.kadence-column105936_dd09f8-5e > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column105936_dd09f8-5e > .kt-inside-inner-col > *, .kadence-column105936_dd09f8-5e > .kt-inside-inner-col > figure.wp-block-image, .kadence-column105936_dd09f8-5e > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column105936_dd09f8-5e > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column105936_dd09f8-5e > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column105936_dd09f8-5e{position:relative;}@media all and (max-width: 1024px){.kadence-column105936_dd09f8-5e > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column105936_dd09f8-5e > .kt-inside-inner-col > *, .kadence-column105936_dd09f8-5e > .kt-inside-inner-col > figure.wp-block-image, .kadence-column105936_dd09f8-5e > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column105936_dd09f8-5e > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column105936_dd09f8-5e > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column105936_dd09f8-5e > .kt-inside-inner-col > *, .kadence-column105936_dd09f8-5e > .kt-inside-inner-col > figure.wp-block-image, .kadence-column105936_dd09f8-5e > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column105936_dd09f8-5e > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column105936_dd09f8-5e kb-section-dir-horizontal kb-section-md-dir-horizontal inner-column-1 pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image105936_2b20d0-b2.kb-image-is-ratio-size, .kb-image105936_2b20d0-b2 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image105936_2b20d0-b2.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image105936_2b20d0-b2 .kb-image-is-ratio-size{align-self:unset;}.kb-image105936_2b20d0-b2 figure{max-width:45px;}.kb-image105936_2b20d0-b2 .image-is-svg, .kb-image105936_2b20d0-b2 .image-is-svg img{width:100%;}.kb-image105936_2b20d0-b2 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image105936_2b20d0-b2\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/f_auto,dpr_auto,q_auto,c_pad\/carparts\/blog\/widgets\/protip\/services-icon\" alt=\"\" class=\"kb-img\"><\/figure><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column105936_b80d41-04 > .kt-inside-inner-col,.kadence-column105936_b80d41-04 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column105936_b80d41-04 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column105936_b80d41-04 > .kt-inside-inner-col{flex-direction:column;}.kadence-column105936_b80d41-04 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column105936_b80d41-04 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column105936_b80d41-04{position:relative;}@media all and (max-width: 1024px){.kadence-column105936_b80d41-04 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column105936_b80d41-04 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column105936_b80d41-04 inner-column-2 pro-tip-item2\"><div class=\"kt-inside-inner-col\">\n<div class=\"protip-desc\">\n\t<div class=\"help-tip\">\n\t\t<p><strong>Pro Tips<\/strong> are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive industry. These can help you make more informed decisions about your car.<\/p>\n\t<\/div>\n    <div class=\"help-caption\">\n        <p>\n            <strong>Pro Tip:<\/strong>\n            On an EV, the BMS acts as the battery pack&rsquo;s &ldquo;brain,&rdquo; making decisions based on the data it collects to optimize performance and ensure safety.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Why Should You Reset the BMS?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/05\/battery-management-system-bms-of-ev-1024x682.jpg\" alt=\"battery management system bms of ev\" class=\"wp-image-105940\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/05\/battery-management-system-bms-of-ev-1024x682.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/05\/battery-management-system-bms-of-ev-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/05\/battery-management-system-bms-of-ev-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/05\/battery-management-system-bms-of-ev-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/05\/battery-management-system-bms-of-ev-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/05\/battery-management-system-bms-of-ev-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/05\/battery-management-system-bms-of-ev-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/05\/battery-management-system-bms-of-ev.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Resetting the BMS is only necessary when the system malfunctions or the battery isn&rsquo;t performing as usual.<\/figcaption><\/figure>\n\n\n\n<p>Resetting the BMS restores the system to its default settings, allowing it to make adjustments to battery performance according to the vehicle. The reset helps extend a car battery&rsquo;s lifespan by ensuring efficient power use.<\/p>\n\n\n\n<p>A reset can also fix BMS issues because it clears the system&rsquo;s data and reboots the sensors, allowing the BMS to gather data and start anew.<\/p>\n\n\n\n<p>Resetting the BMS is only necessary when the system malfunctions or the battery isn&rsquo;t performing as usual. It&rsquo;s also a must if the BMS was recently installed to let it make the adjustments needed to optimize battery performance.<\/p>\n\n\n\n<p>Non-electric vehicles don&rsquo;t have complex battery management systems like those used on electric vehicles. However, newer non-EVs do have a basic system to manage the battery, so on a non-EV, a BMS reset might be necessary after a 12-volt battery replacement or a system malfunction.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Non-electric vehicles don&rsquo;t have complex battery management systems like those used on electric vehicles. However, newer non-EVs do have a basic system to manage the battery, so on a non-EV, a BMS reset might be necessary after a 12-volt battery replacement or a system malfunction.<\/p>\n<cite>&ndash;<a href=\"https:\/\/www.carparts.com\/blog\/author\/richardmccuistian\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Richard McCuistian, ASE Certified Master Automobile Technician\">Richard McCuistian, ASE Certified Master Automobile Technician<\/a><\/cite><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Signs the BMS Needs to Be Reset<\/h2>\n\n\n\n<p>You might need to reset the BMS if the car battery drains quickly or overheats. Irregular charging patterns and frequent false alarms are also signs to watch out for.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Batteries Drain Quickly<\/h3>\n\n\n\n<p>Batteries that can&rsquo;t hold their charge well are either defective or being mismanaged by your vehicle&rsquo;s BMS. That&rsquo;s why a battery that empties quicker than usual might indicate the need for a reset. If the battery is very old it may need to be replaced. No battery lasts indefinitely.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Overheating Batteries<\/h3>\n\n\n\n<p>If a battery overheats due to a malfunctioning BMS, it runs the risk of exploding via thermal runaway. Not only can this permanently damage your vehicle, but it can also injure you and other people.<\/p>\n\n\n\n<p>When the car battery overheats, it can affect engine performance and emit smoke and foul sulfuric smells. In some cases, it might even make hissing noises. If it catches fire, it&rsquo;s almost impossible to extinguish, even for firefighters.<\/p>\n\n\n<style>.kadence-column105936_971a4e-41 > .kt-inside-inner-col,.kadence-column105936_971a4e-41 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column105936_971a4e-41 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column105936_971a4e-41 > .kt-inside-inner-col{flex-direction:column;}.kadence-column105936_971a4e-41 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column105936_971a4e-41 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column105936_971a4e-41{position:relative;}@media all and (max-width: 1024px){.kadence-column105936_971a4e-41 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column105936_971a4e-41 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column105936_971a4e-41 kb-section-dir-vertical kb-section-sm-dir-vertical inner-column-1 pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>.kb-row-layout-id105936_db55bd-f5 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id105936_db55bd-f5 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id105936_db55bd-f5 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:20px;padding-right:32px;padding-bottom:20px;padding-left:16px;grid-template-columns:minmax(0, calc(10% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)))minmax(0, calc(90% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)));}.kb-row-layout-id105936_db55bd-f5 > .kt-row-layout-overlay{opacity:0.00;}.kb-row-layout-id105936_db55bd-f5 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figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column105936_741941-df > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column105936_741941-df > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column105936_741941-df > .kt-inside-inner-col > *, .kadence-column105936_741941-df > .kt-inside-inner-col > figure.wp-block-image, .kadence-column105936_741941-df > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column105936_741941-df > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column105936_741941-df kb-section-dir-horizontal kb-section-md-dir-horizontal inner-column-1 pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image105936_7b3710-49.kb-image-is-ratio-size, .kb-image105936_7b3710-49 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image105936_7b3710-49.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image105936_7b3710-49 .kb-image-is-ratio-size{align-self:unset;}.kb-image105936_7b3710-49 figure{max-width:45px;}.kb-image105936_7b3710-49 .image-is-svg, .kb-image105936_7b3710-49 .image-is-svg img{width:100%;}.kb-image105936_7b3710-49 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image105936_7b3710-49\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/f_auto,dpr_auto,q_auto,c_pad\/carparts\/blog\/widgets\/protip\/services-icon\" alt=\"\" class=\"kb-img\"><\/figure><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column105936_120f72-2e > .kt-inside-inner-col,.kadence-column105936_120f72-2e > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column105936_120f72-2e > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column105936_120f72-2e > .kt-inside-inner-col{flex-direction:column;}.kadence-column105936_120f72-2e > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column105936_120f72-2e > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column105936_120f72-2e{position:relative;}@media all and (max-width: 1024px){.kadence-column105936_120f72-2e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column105936_120f72-2e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column105936_120f72-2e inner-column-2 pro-tip-item2\"><div class=\"kt-inside-inner-col\">\n<div class=\"protip-desc\">\n\t<div class=\"help-tip\">\n\t\t<p><strong>Pro Tips<\/strong> are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive industry. These can help you make more informed decisions about your car.<\/p>\n\t<\/div>\n    <div class=\"help-caption\">\n        <p>\n            <strong>Pro Tip:<\/strong>\n            Many EV batteries are liquid cooled, with heat exchangers (like radiators) and some have more than one coolant pump. Typically, EVs with air cooled batteries will have much lower performance requirements than high performance long range EVs.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Frequent False Alarms<\/h3>\n\n\n\n<p>The BMS manages the battery to ensure it operates within certain parameters using data from sensors that measure electronic activity and battery consumption.<\/p>\n\n\n\n<p>When these sensors detect that the battery is malfunctioning, they trigger an alarm to indicate that something is wrong.<\/p>\n\n\n\n<p>A faulty BMS can trigger these alarms even when the battery works as intended. In this case, it&rsquo;s a good idea to reset the BMS. It&rsquo;ll recalibrate the system and its sensors, potentially stopping the BMS from making the same mistakes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Inconsistent Battery Charging<\/h3>\n\n\n\n<p>If the voltage allocated to the battery when charging fluctuates drastically, resetting the BMS could stabilize it.<\/p>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">How to Reset the BMS (varies depending on the vehicle)<\/h2>\n\n\n\n<p>Every vehicle is different, so the steps to reset the BMS can vary. For more precise instructions for your vehicle, it&rsquo;s best to check your owner&rsquo;s manual.<\/p>\n\n\n\n<p>Resetting the BMS usually involves the steps below.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.carparts.com\/blog\/tips-on-good-ev-charging-etiquette\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Fully charge your vehicle&rsquo;s battery\">Fully charge your vehicle&rsquo;s battery<\/a>.<\/li>\n\n\n\n<li>Disconnect any chargers or power sources to ensure nothing is actively charging the battery.<\/li>\n\n\n\n<li>Remove the battery from the vehicle and let it settle for thirty minutes to an hour to dissipate residual electricity.<\/li>\n\n\n\n<li>Press and hold the reset button on your battery to reboot the battery and the BMS.<\/li>\n\n\n\n<li>Wait thirty minutes after resetting the BMS before reinstalling it on your vehicle.<\/li>\n<\/ol>\n\n\n\n<p>If no reset button is available, you might need to bring your vehicle to a dealership or an auto shop. Professionals can examine your vehicle and reset the BMS if it&rsquo;s necessary.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Alternatives to Resetting BMS Batteries<\/h2>\n\n\n\n<p>Resetting the BMS battery doesn&rsquo;t always fix battery-related issues. Thankfully, there are alternative fixes you can try.<\/p>\n\n\n\n<p>For one, you can perform a discharge and recharge cycle. To do so, you&rsquo;ll have to fully discharge the BMS battery and charge it back up. To discharge, you need to connect a load (like a resistor) to the battery&rsquo;s discharge terminals.<\/p>\n\n\n\n<p>You can also check your BMS model for firmware or software updates. These updates not only improve performance but can fix certain issues.<\/p>\n\n\n\n<p>If these alternatives don&rsquo;t fix the issue, then it&rsquo;s best to reset the BMS battery or take it to a mechanic. They&rsquo;ll have better knowledge on what&rsquo;s causing the problem and ways to deal with it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Need EV Parts? Shop For Direct Fit Parts Online<\/h2>\n\n\n\n<p>Your vehicle&rsquo;s BMS can run into issues, but solving the problem doesn&rsquo;t usually warrant replacement components. However, other EV components like brakes, headlights, and body components can get damaged and require replacement. Need new EV components? Going to your dealership might not be the right call. Here at CarParts.com, you can get the parts that you need for less.<\/p>\n\n\n\n<p>CarParts.com has a wide selection of parts that can get your EV back to perfect working condition. All our parts are sourced from leading aftermarket manufacturers, ensuring their quality and reliability. Our aftermarket parts are just as good as original parts because they also passed strict quality checks to ensure that they fit and function just like the originals. Moreover, our strategically located warehouses let us ship your order quickly, so you can get your parts in as fast as two business days.<\/p>\n\n\n\n<p>Have damaged parts on your EV? Don&rsquo;t worry because you can get affordable <a href=\"https:\/\/www.carparts.com\/ev\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"EV components\">EV components<\/a> here at CarParts.com today!<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 6<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Battery management systems for electric vehicles play a huge role in keeping EVs operational. They keep the batteries in good&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/what-is-a-bms-reset-when-and-how-to-do-it\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":105938,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[52,3758],"tags":[3166],"ppma_author":[2607,2985],"class_list":{"0":"post-105936","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-electrical-system","9":"tag-hybrid-drive-battery","10":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is a BMS Reset for Electric Vehicles? When and How to Do It - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn about your car&#039;s battery management systems as well as when and how to do BMS resets in this article.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.carparts.com\/blog\/what-is-a-bms-reset-when-and-how-to-do-it\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is a BMS Reset for Electric Vehicles? When and How to Do It - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn about your car&#039;s battery management systems as well as when and how to do BMS resets in this article.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/what-is-a-bms-reset-when-and-how-to-do-it\/\" \/>\n<meta property=\"og:site_name\" content=\"In The Garage with CarParts.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2024-05-03T03:39:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-19T00:32:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/05\/ev-car-battery-management-system.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1335\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"CarParts.com Research Team, Richard McCuistian, ASE Certified Master Automobile Technician\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/CarPartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"CarParts.com Research Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/what-is-a-bms-reset-when-and-how-to-do-it\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/what-is-a-bms-reset-when-and-how-to-do-it\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"1651\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com&#039;s thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.\",\"knowsAbout\":\"Auto Repair, Car Maintenance, Auto Parts, Car Reviews\",\"publishingPrinciples\":\"\\\/blog\\\/our-team\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/author\\\/thecpteam\\\/\",\"sameAs\":\"https:\\\/\\\/www.facebook.com\\\/carpartscom, https:\\\/\\\/twitter.com\\\/CarPartscom, https:\\\/\\\/www.youtube.com\\\/@CarPartscomOfficial\\\/, https:\\\/\\\/www.instagram.com\\\/carpartscom\\\/\"},{\"@type\":\"Person\",\"$id\":\"1651\",\"name\":\"Richard McCuistian\",\"jobTitle\":\"ASE Master Automobile Technician\",\"description\":\"Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. 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