{"id":122293,"date":"2024-11-26T23:55:51","date_gmt":"2024-11-27T07:55:51","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=122293"},"modified":"2025-02-03T17:29:06","modified_gmt":"2025-02-04T01:29:06","slug":"a-quick-guide-on-the-engine-temperature-warning-light","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/a-quick-guide-on-the-engine-temperature-warning-light\/","title":{"rendered":"A Quick Guide on the Engine Temperature Warning Light"},"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\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column122293_793f9b-ba > .kt-inside-inner-col,.kadence-column122293_793f9b-ba > .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-column122293_793f9b-ba > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column122293_793f9b-ba > .kt-inside-inner-col{flex-direction:column;}.kadence-column122293_793f9b-ba > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column122293_793f9b-ba > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column122293_793f9b-ba{position:relative;}@media all and (max-width: 1024px){.kadence-column122293_793f9b-ba > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column122293_793f9b-ba > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column122293_793f9b-ba inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-cf9039  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-ede675\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading122293_b08652-a0, .wp-block-kadence-advancedheading.kt-adv-heading122293_b08652-a0[data-kb-block=\"kb-adv-heading122293_b08652-a0\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading122293_b08652-a0 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading122293_b08652-a0[data-kb-block=\"kb-adv-heading122293_b08652-a0\"] 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-heading122293_b08652-a0 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading122293_b08652-a0[data-kb-block=\"kb-adv-heading122293_b08652-a0\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading122293_b08652-a0 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading122293_b08652-a0\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The engine temperature warning light indicates that the engine is running dangerously hot.<\/li>\n\n\n\n<li>The warning light turns on because of an overheating engine, low engine coolant level, and engine cooling system problems.<\/li>\n\n\n\n<li>If the engine temperature warning light turns on, pull over into the shade, let the engine cool down and rest, check its temperature and coolant level, and replenish the coolant.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Driving with an overheated engine is a surefire way of damaging the mechanism. Fortunately, the engine temperature warning light will warn you about the problem. Let&rsquo;s take a look at what this warning light entails when it illuminates, what conditions trigger it, and what you should do when you notice it&rsquo;s on.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What the Engine Temperature Warning Light Means<\/h2>\n\n\n\n<p>The engine temperature warning light indicates that the engine is running dangerously hot. If you see this light turned on, stop whatever you&rsquo;re doing and find a safe way to cool the engine.<\/p>\n\n\n\n<p>You can find the engine temperature warning light on the dashboard gauge cluster. It resembles a thermometer for easier recognition. It might also have a label saying &ldquo;temp&rdquo; or the phrase &ldquo;engine overheating.&rdquo;<\/p>\n\n\n\n<p>When you start your vehicle, warning lights will turn on as they test their light bulbs for possible issues. One of these self-testing lights is the engine temperature warning light. Thus, there&rsquo;s no need for concern if you see this warning light glow during the first few seconds after the engine starts. However, if the engine temperature warning light keeps glowing, it&rsquo;s important to react correctly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Triggers the Engine Temperature Warning Light?<\/h2>\n\n\n\n<p>So, what prompts the PCM to activate the engine temperature warning light? Here are the three primary issues that trigger this light:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Overheating Engine<\/h3>\n\n\n\n<p>If the <a href=\"https:\/\/www.carparts.com\/blog\/what-type-of-damage-to-expect-from-an-overheating-car\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine overheats\">engine overheats<\/a>, the engine temperature warning light turns on. It&rsquo;s as simple as that.<\/p>\n\n\n\n<p>Your vehicle&rsquo;s powertrain control module (PCM) monitors various factors that affect how the engine runs, such as the temperature of the engine coolant. The computer uses the readings provided by the <a href=\"https:\/\/www.carparts.com\/coolant-temperature-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine coolant temperature sensor\">engine coolant temperature sensor<\/a>, which measures how hot the coolant is.<\/p>\n\n\n\n<p>If the sensor readings show that the coolant is much hotter, the PCM will activate the engine temperature warning light.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Low Engine Coolant Level<\/h3>\n\n\n\n<p>In many cases, the engine overheats because it&rsquo;s short on coolant. Fortunately, you can fix this problem by filling the coolant reservoir with new engine coolant.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Engine Cooling System Issues<\/h3>\n\n\n\n<p>The engine cooling system has many parts that work together. If one of its parts develops an issue or fails, the system cannot cool the engine as efficiently as it should.<\/p>\n\n\n\n<p>Take the <a href=\"https:\/\/www.carparts.com\/radiator-fan\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"radiator fan\">radiator fan<\/a> for example. The fan blows air over the radiator. The airflow carries away the heat released by the heat exchanger, helping to cool the coolant passing through the radiator pipes. If the radiator fan operates erratically or stops working, it cannot cool the radiator.<\/p>\n\n\n\n\n\n\n<h2 class=\"wp-block-heading\">What Should You Do If the Engine Temperature Warning Light Turns On?<\/h2>\n\n\n\n<p>Is the engine temperature warning light illuminated? Here are the things you must do immediately:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pull Over<\/h3>\n\n\n\n<p>It&rsquo;s dangerous to drive with an illuminated engine temperature warning light that warns you about an overheating engine. Pull over on the side of the road as soon as it&rsquo;s safe to do so.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Get In The Shade<\/h3>\n\n\n\n<p>If you&rsquo;re driving during a hot day and the engine temperature warning light turns on, get out from under direct sunlight. Sunlight heats anything it shines upon.<\/p>\n\n\n\n<p>Look for a shady area. The overhead shade will protect your vehicle and you from direct sunlight.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Let The Engine Cool Down<\/h3>\n\n\n\n<p>Give the engine a minimum of 30 minutes to cool down. Don&rsquo;t shut down your vehicle immediately. Otherwise, you might cause heat congestion that makes the water even hotter.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Check the Temperature<\/h3>\n\n\n\n<p>Carefully apply water to the surface of the engine block. If the water boils, the engine remains too hot to safely turn off. Instead, let your vehicle idle until it cools off. Afterward, you can turn it off.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Check Coolant Level<\/h3>\n\n\n\n<p>You should wait for the engine to cool down before checking its coolant level. A hot engine might release steam that can hurt you.<\/p>\n\n\n\n<p>Wear protective gear beforehand. Put on a thick glove or wrap a thick piece of cloth around your hands to protect them from the heat of the radiator and its contents.<\/p>\n\n\n\n<p>Slowly unscrew the <a href=\"https:\/\/www.carparts.com\/coolant-reservoir-cap\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"coolant reservoir cap\">coolant reservoir cap<\/a> to release the excess pressure safely. Leave the coolant reservoir open to let out heat while you check its contents.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Replenish Engine Coolant<\/h3>\n\n\n\n<p>You can usually fix a low coolant level by adding clean water to the coolant reservoir. It&rsquo;ll mix with the remaining coolant and restore the cooling system&rsquo;s performance.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Check For Coolant Leaks<\/h3>\n\n\n\n<p>However, refilling the coolant reservoir might only be a temporary fix if its coolant level drops because of a leak. You must find the source of the coolant leak and patch it up.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Let Your Vehicle Rest<\/h3>\n\n\n\n<p>Do you work your vehicle hard? Is it heavy to begin with, overloaded, or both? Its engine can run excessively hot from propelling the overloaded car.<\/p>\n\n\n\n<p>Your vehicle needs breaks. Once its engine has cooled down, you can operate it again.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Use the OBD-II Scan Tool<\/h3>\n\n\n\n<p>If your vehicle develops an issue, the PCM will usually set the relevant diagnostic trouble code. You can view the trouble codes by plugging an OBD-II scanner into the PCM. Look up the details of the trouble code to see if you can fix the problem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Happens When You Keep Driving with the Engine Temperature Warning Light On?<\/h2>\n\n\n\n<p>Driving with an illuminated engine temperature warning light can cause serious engine problems. The engine might even fail.<\/p>\n\n\n\n<p>The heated metal expands in volume, increasing the chances of engine parts directly touching each other. The metal-to-metal contact produces more friction, abrades the surfaces of parts, and makes a knocking noise. It can damage critical parts like the camshaft, head gasket, O-ring, pistons, valves, and other engine parts.<\/p>\n\n\n\n<p>Overheating will also inflict significant thermal stress on the cylinder head and engine block. Aluminum cylinder heads are more likely to fracture from the heat and pressure.<\/p>\n\n\n\n<p>Always heed the engine temperature warning light. If it illuminates, immediately get your car to a safe spot. Identify the problem and see if you can fix it long enough to get to a trusted auto repair shop. Otherwise, call for a tow to prevent further damage to the engine.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Getting Your Hands on Replacement Engine Parts<\/h2>\n\n\n\n<p>The <a href=\"https:\/\/www.carparts.com\/camshaft\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"camshaft\">camshaft<\/a>, <a href=\"https:\/\/www.carparts.com\/head-gasket-set\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"head gasket\">head gasket<\/a>, O-ring, pistons, and valves are all vulnerable to damage from engine overheating. Finding these components can be tricky because they won&rsquo;t always be compatible with your vehicle.<\/p>\n\n\n\n<p>With the help of <a href=\"http:\/\/carparts.com\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" aria-label=\"CarParts.com\">CarParts.com<\/a>, getting your hands on replacement parts designed to work with your vehicle has never been easier.<\/p>\n\n\n\n<p>The best part? You can get your hands on new engine parts without going beyond your doorstep. Simply visit our website or download our mobile app.<\/p>\n\n\n\n<p>All products in our catalog are sourced from the most trusted manufacturers in the industry. These items are carefully vetted by a team of professionals to guarantee their performance and longevity.<\/p>\n\n\n\n<p>Enjoy fast and hassle-free shipping thanks to our strategically located warehouses all over the US. Place your order by noon EST and get it in as fast as two business days.<\/p>\n\n\n\n<p>Don&rsquo;t hold off on replacing critical engine components. Browse our catalog 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\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Driving with an overheated engine is a surefire way of damaging the mechanism. Fortunately, the engine temperature warning light will&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/a-quick-guide-on-the-engine-temperature-warning-light\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":122601,"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":[52,3751],"tags":[],"ppma_author":[2607],"class_list":{"0":"post-122293","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-warning-lights","9":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A Quick Guide on the Engine Temperature Warning Light - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"What does the engine temperature warning light mean when it illuminates? Here\u2019s a quick guide on what to do and not to do.\" \/>\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\/a-quick-guide-on-the-engine-temperature-warning-light\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Quick Guide on the Engine Temperature Warning Light - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"What does the engine temperature warning light mean when it illuminates? 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