# Dealership says my stereo killed my ECM?? BS?? **URL:** https://forums.speedlife.net/t/dealership-says-my-stereo-killed-my-ecm-bs/29400 **Category:** NYSpeed Automotive **Created:** [May 16, 2007, 2:25pm UTC](https://forums.speedlife.net/t/dealership-says-my-stereo-killed-my-ecm-bs/29400 "2007-05-16T14:25:28Z") **Posts on this page:** 1 **Showing post:** 12
### Author: ![97FormulaWS-6](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/97formulaws-6/32/7384_2.png) [@97FormulaWS-6](https://forums.speedlife.net/u/97FormulaWS-6) #### Post date: [May 17, 2007, 8:24am UTC](https://forums.speedlife.net/t/dealership-says-my-stereo-killed-my-ecm-bs/29400/12 "2007-05-17T08:24:37Z")
None of this makes sence. Basically you had a bad ECM that they are trying to take the blame off Toyota and put it on your so they don’t have to warrenty it. All ECMs have voltage protection/regulation built into them; bottom line. Even if your voltage drops to 10V on the car, it will still run… barely, but it will run. If you over-voltage it somehow, which also doesn’t seem probable in any way it would pop the voltage protection in the ECM, in a sence “frying” it, even though only 3 or 4 components went bad. As long as your HU is wired into the factory stereo wiring through the stock HU fuse; that can not be it. If your amp is pulling directly off the battery and fused properly then you are fine (seeing u have a small system and nothing huge). The battery is isoltating and providing a buffer of sorts to the cars main electrical system. Bottom line: They are blowing smoke up your ass so they can blame u instead of fessing up that there is another issue. --- _[View the full topic](https://forums.speedlife.net/t/dealership-says-my-stereo-killed-my-ecm-bs/29400)._