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Summary
  • A remote car starter is a small device that starts the engine without inserting a key in the ignition. Pressing it sends radio-frequency signals to a control module.
  • A complete setup uses appropriate wiring, a bypass module, a control module, and a remote transmitter. Many operate two-way, and some work with smartphones.
  • DIY kits must match the specific vehicle platform, with simpler options mainly for pre-1990s cars. For installation or resets—such as lock/unlock cycles and key insertion—follow the owner’s manual or consult a professional.

Aremote car starter is a small device that allows you to start the engine without inserting a physical key in the ignition. The appropriate wiring, a bypass module, acontrol module, and aremote transmitter are needed for a remote start setup.

remote start module and wire harness
DIY remote start kits (see illustration) typically must be purchased for the specific vehicle platform. There isn’t a simple one size fits all kit that works on modern cars. You might find a simpler kit for cars built before the early 1990s. | Image Source: Richard McCuistian

A lot of remote car starters operate in two-way mode. Some of these are also compatible with most smartphones, making it more convenient to start your vehicle without the key fob. Upon pressing the remote starter, signals are sent to the control module via radio frequencies. 

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Remote starters have been around longer than most people realize. The first U.S. patent for a remote car starter was issued in 1963 to Samuel Fried of Omaha, Nebraska. 

But it wasn’t until the 1980s that remote start systems began appearing more widely, thanks to companies like Fortin in Canada that developed bypass modules to work around factory anti-theft systems.

In most modern vehicles, OEM remote start systems are integrated into the Body Control Module (BCM) rather than being standalone units or part of the Powertrain Control Module (PCM). 

Tips for Using the Remote Car Starter

The remote starter may fail due to electrical faults. However, some instances require simple solutions to resolve such issues, such as resetting the remote starter. 

Performing several lock/unlock cycles and inserting the key in the ignition will typically reset the remote start system. The exact steps may vary, depending on your vehicle’s specifications.

It’s best to consult your vehicle owner’s manual or have a professional inspect your vehicle if you plan on installing a remote start system

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About The Authors
Written By Automotive and Tech Writers

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's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Reviewed By Technical Reviewer at CarParts.com

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. Richard is ASE certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

File Under : Electrical System , Auto Repair , DIY Tagged With :
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