ML55 AMG, ML63 AMG (W163, W164) 1999 - 2011 Two Generations

Fog Light Flickering On and Off, Even with Key Out of Car

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Old Sep 24, 2023 | 12:08 PM
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WL163 ML55 and W210 E55
Fog Light Flickering On and Off, Even with Key Out of Car

Just on the off-chance some has the same problem.

I got a 2002 W163 ML55 I bought for my daughters first car, she wanted something she could sleep in and any other comparable SUV/4WD in the age/price range was either woeful or unsafe, mostly both. It's done 300k km, but all around not bad shape. I already had a 1998 W210 E55 myself, so same engine and gearbox, so...

But, one fog light kept on coming on at strange times, flicking on and off, sometimes staying on or off.

I started pulling fuses, relays, trying all sorts, but nothing added up.

Eventually I found one of the headlight plugs had been pushed in with one pin bent and touching it's neighbour, some of the time it would seem.


look closely

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Old Oct 31, 2023 | 07:17 PM
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ML 63 AMG
Originally Posted by 55er;[url=tel:8851544
8851544]Just on the off-chance some has the same problem.

I got a 2002 W163 ML55 I bought for my daughters first car, she wanted something she could sleep in and any other comparable SUV/4WD in the age/price range was either woeful or unsafe, mostly both. It's done 300k km, but all around not bad shape. I already had a 1998 W210 E55 myself, so same engine and gearbox, so...

But, one fog light kept on coming on at strange times, flicking on and off, sometimes staying on or off.

I started pulling fuses, relays, trying all sorts, but nothing added up.

Eventually I found one of the headlight plugs had been pushed in with one pin bent and touching it's neighbour, some of the time it would seem.


look closely
Good catch! 👍 I’m guessing when the previous owner changed the bulb, they must have gotten a little careless putting the connector back in place.
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