Can a BAD BCM Cause a Car Not to Start? Symptoms + Solutions for Your Body Control Module

Got a car question and need an answer?

Video Chapters:
1:05 - Can a Bad BCM Cause Car Not to Start?
2:06 - What Problems Can a Bad BCM Cause?
2:52 - Does BCM Control the Fuel Pump?
3:22 - What Systems Does the BCM Control?
4:02 - Can I Swap BCM and ECU from Different Car?

Understanding your car's Body Control Module (BCM) is important when troubleshooting car issues. In this video, we look at the role of the Body Control Module and how a malfunctioning BCM can prevent your car from starting.

There are various problems that a bad body control module can cause, from parasitic battery drainage to triggering excessive dash warning lights. We clarify common misconceptions, such as the role of the BCM in controlling the fuel pump. We also explore the many systems the body control module oversees, including the immobilizer system, AC system, energy management system, and more.

Finally, we look at swapping a BCM and ECU from a different car. Join us as we demystify the complex world of car electronics, focusing on the Body Control Module, and help you better understand your vehicle's functionality. Don't forget to like, share, and subscribe for more informative content on car maintenance and the crucial role of the Body Control Module.

[nightangel]

Can the BCM be tested to check that it's still good once removed from the vehicle?

[danielreynolds]

Great video and informative. Much appreciated. I have several of these issues such as remote start and security module stuck in learn mode. I found some literature stating that symptom is a sign of a bad BCM. Ive also been having parasitic draw on my bayteries every since it stopped starting.

[yeteryeter]

mate car will not start or car will not remote start?