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AUTO lights Inoperative

Old 12-30-2018, 11:28 PM
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Not to mention, I can understand automatic wipers not working if that sensor was bad. But I have no operation of wipers with this error. I would really hope something like that would cause a hazard of your wipers not working. I am going to have to start tracing wires out checking for shorts myself. No faith in the stealership and their over pricing .... To not even know how to fix a problem
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Old 12-31-2018, 01:07 PM
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I was hoping you'd find the issue, mine comes and goes... it hasn't happened in a while but i want to get to the bottom of it as well.
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Old 12-31-2018, 03:38 PM
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i knew posting in this thread would cause hell, i sat in the car and for the first time in months i get the warnings adaptive headlamp inoperative and auto high beams inoperative... lol it went off after i ran in to get food about 20 min later.
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Old 12-31-2018, 04:16 PM
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Old tsb

So I found an old tsb that said to let the car run and get to ambient temps. I let it idle with the heater on till I got hit inside. Turned it off and back in. Problem was gone. Anyone know if that wiper/light sensor could actually cause that or is there something in the upper module??
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Old 12-31-2018, 05:31 PM
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Ive found that helps sometimes, I called for pricing for the upper computer and it's over $1200.

The car shows no codes scanned multiple times. It comes and goes, my wipers work the lights work too. The auto function only works manually when the warning lights up.

It seems like it could be the headlight computer that's close to the headlights. I got this issue only after the duck in the headlight incident and they had to replace the headlight and computer behind the headlight.
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Old 12-31-2018, 05:53 PM
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Problems

the tsb says to replace the wiper/light sensor but that was on older models but I able to replicate the problem. Itís got a new rain/light sensor so going to order the upper control computer.
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Old 12-31-2018, 06:22 PM
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Please Keep us updated.
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Old 01-03-2019, 12:00 PM
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Originally Posted by kramykram View Post
the tsb says to replace the wiper/light sensor but that was on older models but I able to replicate the problem. Itís got a new rain/light sensor so going to order the upper control computer.
I'm having the same issues with my 2011 c300, did you had any luck?
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Old 01-09-2019, 02:20 PM
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Replaced the upper sunroof module

That did not fix the problem either. Once again just running the heat for a bit and the problem goes away. Even with the new unit. Thought for sure that would be it. Seems this is a hazard from Mercedes they need to address. I can understand something not making automatic wipers not working. But to lose all functionality is a lawsuit waiting to happen. Same with my Harley when my abs went out and it completely stopped my brakes from working. No sensor should impede a device used for safety.
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Old 01-09-2019, 04:08 PM
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This is crazy I've been digging deep in other forums people said they had to replace the whole headlight and computer to fix the issue. That's really expensive, I don't mind letting the car get to temps. For mine everything functions lights, wipers only things that don't are active curve and auto high beam but high beams work if I do it manually.

After 20 minutes of driving once I restart the car the messages all go away, in the summer I never have the issues
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