Head light fault
Thread Starter
Newbie
Joined: Aug 2019
Posts: 1
Likes: 0
w204
Head light fault
I've got the intelligent light system on my car with xenon bulbs. Recently due to heavy rain theres water inside the unit, since then my intelligent system doesn't work and the main beam isn't working. My car is also telling me that the indicator isn't working but it is.
Has anyone come across this before and could it be the ballast or is it simply the bulb had gone causing this fault?
Cheers
Has anyone come across this before and could it be the ballast or is it simply the bulb had gone causing this fault?
Cheers
Junior Member
Joined: Feb 2013
Posts: 73
Likes: 7
From: Edmonton
2015 C400 Sedan
Try swapping the working bulb into the non working side. If it still doesn't light up, it's probably the ballast. I had to replace mine twice because water wrecked it.
The part was quite cheap, under $100 for a eBay used one. It was a pain to get at, as you have to disassemble part of the bumper. But it was better than paying a shop close to $1000 for the work.
The second time it happened, I wrapped the bottom of the headlight and ballast in a thick plastic sheet material and haven't had a problem since.
The part was quite cheap, under $100 for a eBay used one. It was a pain to get at, as you have to disassemble part of the bumper. But it was better than paying a shop close to $1000 for the work.
The second time it happened, I wrapped the bottom of the headlight and ballast in a thick plastic sheet material and haven't had a problem since.
