DavidNoble

Yes the title is an oxymoron when you are talking about Mercedes Benz parts, but I figured I would give it a try.

This is the vehicle that needs it:
2000 Mercedes C280 Sport Edition
VIN: WDBHA29G2YA847571

My existing module has an unclearable P1817-2 code so I am looking for a new or used module.

The current module part number is 202-267-054

The module Mercedes is selling to replace it is 202-267-08-24

The lowest cost I have found so far is $454.80 from MercedesPartsDelivered.com.
https://www.mercedespartsdelivered.c...ift-2022670824

If you have this part that you can part with for less please let me know.

Regards,

Plutoe

Get a second job!!

DavidNoble

may have to work on first job first. Then I can get a second one

DavidNoble

Going to try and repair first. Was a bugger to disassemble but found a few things that may have been wrong with it.

khomer2

I assume you've checked your local pick n pulls?

DavidNoble

I searched junkyards online. Those who have it charge 90% of the new price I found.

khomer2

At a "pick and pull"?? no way.
Yes, possibly, if they've pulled the part out for you, but not at a pick n pull.
You have to do some "physical searching", if you want to keep your daughter's first born.

DavidNoble

This info was not available on WIS since the pot is not considered a servicable item. I reverse engineered it for anyone else dealing with this issue.


Better pic

Testing shown on pins 3 and 4 per my schematic not sure what actual pin numbers are

DavidNoble

SOLVED THIS CONDITION!

Apparently there is normal leakage current in the reverse lights that if you do not have your reverse lights installed, the P1817-2 will be set.

So you can read the voltage present with a multimeter as I did, but if you check it with a test light it will drain the voltage and drop the code.

Long story short. If you have a P1817-2 code in a w202 C280 chances are you have both reverse bulbs missing or blown.

I purchased new bulbs and the problem went away.