Start/Stop & Auto Lights down - 2015 CLS AMG 63 S Shooting Brake

[Lallyrs]

Hi everyone, I have a 2015 CLS AMG 63 S Shooting Brake 5.5 Automatic Petrol. The battery has gone flat a few times, now OK, but some of the functions, Start Stop, Auto Lights have stopped. Does anyone know how to reset them, please?

 

[DSK]

When you say it’s now ok, do you mean it’s been charged up or replaced?

I have found that running batteries down a few times never had them performing at the best ever again and for the cost and importance of them, especially on more modern stuff a quality replacement is the only option.


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[bembo449]

i agree DSK , it reads like the car is still trying to conserve the battery power , stop / start not working is 100% an indication of a low battery

 

[AMGeed]

Check the condition of the auxiliary battery too. If its the original one its 7 years old now.
Both should read 12.6v+ fully charged.