johnnymoto365

Can any one help. On my 2007 mercedes s550. My light switch is not working nor illuminated. Light stay own all the time without being able to switch them off unless car is on. Cannot choose to power fog lights either. Upper dash options inoperative nor illuminated, ESP, air ride lift, etc. center clock and parking brake not illuminated. Could this be a relay. All fuses good.

Jaap

Scan the car with Star/Xentry and report the error codes

steveb9771

Most likely it is the day light running lights which are NOT controlled by the light switch. These lights are considered a safety function and you will see many newer cars on the road that have their headlights on during the day. If your vehicle was from Canada, there is no way to turn them off. If it is a USA model, then there is an option to turn them off. Go to settings via the button on the left side of your steering wheel.

Zerocarpileup

change out your center clock. there was a previous thread showing the schematic but all of your symptoms are related to a faulty center clock. ive changed out all components including light switch center dash buttons. it will 100% be the clock. try and dig up the previous thread.