Key system M37x 2012

[dguccim37x]

My car was in shop getting painted and when i got it back a warning on sign came up saying my “key system” doesn’t any one know what that means my car key is in my pocket and the car is drives able just want to get rid of that warning sign please help!!!!!!

[Larz]

These cars do all sorts of weird things when the battery is low or cables are loose. I would check the battery function and cables first. If that doesn't fix it, take it to an auto parts shop and have them list any codes stored in the memory. Those codes should steer you to your next step.

[stm37s]

I was thinking the same thing Larz.