MOT and xenon lights

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x332race

MB Enthusiast
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Dec 10, 2005
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I’m sure that others have come across this. Our E350 convertible went for an MOT; a few days later we noticed that the headlights were lighting up the sky and we were being flashed by oncoming cars.
It transpires that the MOT tester probably adjusted the lights via the adjusting screws and this confused the computer controlling the self levelling lights.
We had to take the car back for the computer to be reset so that the lights levelled properly.
 
I had similar last year at MOT time, only mine were pointing at the ground just in front of me. Probably the huge potholes upset the level sensor.
Cost me £60+ on Star for them to be re- levelled correctly.
 
I’m sure that others have come across this. Our E350 convertible went for an MOT; a few days later we noticed that the headlights were lighting up the sky and we were being flashed by oncoming cars.
It transpires that the MOT tester probably adjusted the lights via the adjusting screws and this confused the computer controlling the self levelling lights.
We had to take the car back for the computer to be reset so that the lights levelled properly.

I don't think there are adjusting screws on Zenon lights.
One of mine was out of kilter and the Mercedes Specialist reset it using Star
 

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