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ACC control panel bulb replacement?

jnes

E500E Guru
Member
Has anyone do this? Or, is the lights even replaceable? How many bulbs there are? PN's?
My car has annoying problem that ACC control panel lights will go off about 20 minutes of driving. They do light again if you switch off the engine. Any thoughts how to fix this?
Also some buttons illumination are dimmer than the other buttons so I think that there are some bulbs that are blind. I tried to search from the web but many guides are for models without ACC. (=manual climate control)
 
I have done this on the c126, it should be similar. You describe something different, lights shutting off are different than a burned out bulb.. Two things come to mind, loose connection either at the bulbs or the light switch itself, along with the power supply potentially getting warm and loose. So you might be sure your contacts are clean and tight at switch and at the acc. The other consideration is corrosion on your cluster potentiometer or looseness from the connection from there to your lights. Same thing, clean and secure contacts, clean buildup off of spring on potentiometer. I assume you have copper fuses and this is your only electrical issue.


MO-bile [emoji629]
 

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