Originally Posted by
pizzaguy
Waste of money. If you take it most anywhere, you will spend a LOT of money for them to GUESS.
SO.......
Just slow down. Wait till you get the new alternator on. If the BAS/ESP light wont go out, replace the battery.
THEN and ONLY THEN should you start throwing money at the BAS/ESP light. You have an electrical disturbance in the car, the alternator was undercharging - dont go all half-cocked after a problem until you resolve the FUNDAMENTAL issue.
Thank you for the tip! Sorry if I wasn't clear. The alternator has been on since Wednesday, then the P0500 came after the alternator was replaced.
I was able to drive the car for hours without issue but yeah, even with the alternator (which fixed the charge system light), BAS/ESP, ABS, and Check Engine currently are on.
I have a Mercedes code scanner from Amazon coming tomorrow to scan it and see if it's got anything more specific.
The battery was replaced 3 years ago but did sulfate during the pandemic. I can also check that.
Appreciate it!