Quote:
Originally Posted by pisters
What steps can I take to diagnose the problem better?
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The CEL/"Service Stabilitrack" and random other module codes are often triggered by low battery/system voltage.
The battery might just be low on charge, and our cars charge their AGMs very slowly when the engine is running, because the "smart charging" logic is overprotective of AGM's sensitivity to charging rate and heat. There have been a few threads on this subject over the years in here.
So put a battery tender/maintainer on it for 48 hours and see if it recovers. Be a shame to waste $$$ buying a new battery when the one you have it just low on charge.
Happened to me and my car. Putting the tender on it saved me from a 2nd battery replacement after I made the mistake of replacing the undercharged battery the first time. And I still have that 2nd battery and it works fine because I keep the tender on it.
