Hello all - Head lights flickering on tick over

[steve ss]

Hello to every one on the forum

I thought I'd join the forum as I've had a couple of problems worth sharing (a problem shared is a problem halved)
I Bought My 59 plate CLS350 CDI with 63k on it from an MB main dealer in June 2013 with the 12 months tier 1 warranty.
The head lights flicker when the car is on tick over sometimes this happens at varying levels of intensity some times just a faint flicker then last week they were almost turning on and off, had it into the dealer and they didn't find anything,sods law it behaved its self they said they tested all the command modules for the lights and they were ok, has anyone come across this issue.
I've today found a turbo problem which I have posted under the engines section
Thanks steve

 

[Ted]

Most likely the alternator regulator.
Usually held on the back of the alternator with a couple of screws and not expensive.
Could also be a resistance in the supply or return feeds, but my money would be on the voltage reg.

Good auto electrician should be able to sort it out without too much pain.