E-Class (W211) 2003-2009

"Number plate light not working" - wrong, but it won't clear.

Old Jul 30, 2022 | 12:08 PM
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"Number plate light not working" - wrong, but it won't clear.

Hello. S211 ´08 E280 wagon here.

Can I clear error messages in the computer somehow? I fixed the number plate light, but it still claims error whenever I start the car.
I have a BlueTooth ODB2 plug, but Torque says there are no fault codes to clear.

To make a short and boring story long and boring instead:
I got the error message that my left number plate light was out. It was indeed burned out. I replaced it. Still would not come on. I rolled the bulb around. It would flicker, so: corroded contacts?

I disassembled the socket and cleaned it thoroughly. Both lamp sockets while I was at it, because if the left one is faltering the right may also any time now.

I put the stuff back, and both lamps work great. Except that whenever I turn on the ignition, I get a message: "LEFT PLATE LAMP DEAD, RIGHT PLATE LAMP DEAD".

I went into the service menu (ignition on, push Reset three times, voltage menu) and erased everything I could find. No difference. Still get an error message every time I turn it on, even though both lamps operate as they should.

Anyone have a clue as what I should do now? Get a better ODB2-thing?

Thank you in advance for any usable information!
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Old Jul 30, 2022 | 02:29 PM
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2006 E280
Get iCarsoft MB V2.0 or similar, Mercedes specific scanner. Those general scanners usually don't go deep enough to the system.
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Old Jul 31, 2022 | 07:09 AM
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Thank you very much for this valuable advice!

That scanner market is a jungle, I appreciate guidance.
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Old Jul 31, 2022 | 09:02 AM
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2013 ML350 Bluetec
The error should clear itself after a few cold starts.
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Old Aug 1, 2022 | 06:40 AM
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Aight, cool. Thanks!

Going to get that scanner anyway. I like tools.
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Old Sep 14, 2022 | 08:27 PM
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The error did not clear itself, but a bit of poking with the iCarsoft device fixed it.

It also fixed an error where the front power windows would not "auto-close" - the last half year I have had to hold the button all the way up. Now it works as it should.
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Old Sep 15, 2022 | 12:04 AM
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And another Icarsoft has paid for itself.
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