Hi all,

I have noticed that when my interior lights are on, the ones in the rear (above the doors and at the bottom of the rear footwells) all flicker randomly. They do however all flicker together in sync but in sync at random times. I think this is most likely a ground problem but it only appears to affect the rear interior lights. The front lights in the overhead dome and the front footwell lights do not flicker at all.

I've changed bulbs but it's clear they all flicker together so I don't think the problem is just a single buld in one of the units.

Are the rear interior lights all connected or controlled together and what controls them? I wonder if it's a failing ground that they are all connected to.

Thanks,

Chris

 

Okay ... both rear courtesy lights (over the doors) and both footwell lights all common up into a single earth-return line which goes to a the Rear Electronic Module where it's switched to earth to switch them on. The fact that they all flash in sync suggests that the intermittant is somewhere in that single line back to the REM ... checking the plugs on the REM would be an obvious first thing to do.

It might be that the intermittant is somewhere in the earth line from the REM to its earth point but I would have thought that would cause a lot of other problems and throw up faults.

One test you could do is to leave the rear map/reading lights switched on and see if they flash in sync as well. These switch directly to a different earth point and so won't flash if the fault is between the courtesies and the REM. However if they DO flash in sync with the courtesies then that indicates that the fault is on the +12V live side instead, as the courtesy and map lamps share a common +12v 'live' supply.

 

Thanks Patrick. That all makes sense. Yes they all flash in sync, even the map/reading lights near the top of the rear doors.

 

... in which case check the connectors on the Rear Fuse Box (and F11 [5 amp] inside it) ☺

 

this works on x351?
I have x351
Did the interior light clean up and copper paste




Tobe precise, on my x351, the interior light and footwell and trunk ware flickering randomly.
ALSO, they ware turning randomly auto on, of interior lights!
Just.… randomly, stationary but the car was awake, in iddle, during driveing day and night!
Successive flickers…..! Any idea what to check more? And where? I also cleaned the connecting plug for the roof unit control. Une plug, contact cleaner on both ends!

I suppose, that because it not only started the light but also turned on and off the auto lights, it was that master switch in the front of the car. But.… could be something else?
Thanks for the answers