Mercedes W211 E280 CDI 2009: Meter Backlight Stains & Replacement Options, Odometer Compatibility

Hello,

I recently bought a Mercedes W211, on the day of purchase, when it got dark, I noticed stains on the meter (visible in the attached photo) It is a bit irritating because it looks ugly, and then something in it squeaks slightly (probably the backlight converter, because when I dim it with the potentiometer it stops ). The question is whether the backlight of the dials is a replaceable part? Do you need to replace the entire meter? Does it matter which meter will fit in the event of a replacement? Will the new odometer take mileage from the car?

Last question - where could these traces come from?

If possible, I would only like to replace the backlight.

Mercedes W211 E280 CDI 2009

Thank you in advance for your help.

norek1991 wrote:

Last question - where could these traces come from?

It looks a bit like a flood fungus.

norek1991 wrote:

If possible, I would only like to replace the backlight.

I don't think it helps.

norek1991 wrote:

The question is whether the backlight of the dials is a replaceable part?

There are probably some bulbs / LEDs ...

norek1991 wrote:

Does it matter which meter will fit in the event of a replacement?

Yeah, probably from Jelcz it will fit

Disassemble the meter and clean or replace the backlight.

Hello,
Were you able to diagnose the cause and fix the problem?
In my S211 there are 2 small dots similar to the picture, one on the watch and the other next to the odometer.
I would like to add that my car did not float, I am the second owner from new, serviced in Aso until 2017

Moisture probably, some time ago I bought another copy of the w211, recently it spent a little over a month not fired, after that time when I fired it at the beginning it was ok, and after a while stains similar to the previous one began to appear.

Added after 5 [minutes]:

For posterity: I dismantled the previous counter, electroluminescent panels are responsible for the backlight. It cannot be repaired or cleaned in any way - only replacement.