Weeve

Just found this thread. Perhaps exact same issue as mine. I added a thread earlier (Turn signal increasingly intermittent W166) as I have the random no turn signal issue. Did the swop for a new module solve the issue long term? Thanks.

mekantor

Speaking for myself, so far the issue hasn't returned.

bwiele

Hi - if you are still very generously helping strangers who have this same problem, would you please look up the part number for VIN 4JGDF6EE7HA755672?

Many thanks in advance if you are able to help,

Brian

mekantor

Sure no problem, I believe yours is A 166 900 92 07 9051.
Although A 166 900 01 08 9051 also showed up in EPC. It is not listed as a replacement for another part, but has a note "from 12.06.15"

Maybe its a GLS thing, that there are 2 different parts listed? Dealership might be more hopeful to sort out the distinction. For my GL it still looks the same, 1 original part and 1 newer direct replacement.

bwiele

Thank you so much for your help. I will try to figure out which one is the right one.

Best regards,

Brian

bwiele

Just circling back to close the loop on my experience - I reached out to the dealership in FL that was recommended (benzpartshq.com) to order the part that mekantor told me was the one for my car. As he suggested, there's an updated part number for this part and they were able to help me sort that out. The list price for the multi switch is $535, with their online purchase discount the price of the part was $400, they also recommended replacing the steering wheel bolt and buying the clip which self destructs when removed. Total cost for those additional parts was $8.50.

I'm a DIY type person but definitely not an automotive mechanic. I followed the process described here and watched a few YouTube videos and then just started the project. All in it took me 1:15 start to finish (which was a lot less than I expected). All the switches & functions worked perfectly after the swap. I had my first drive of over an hour last night and I'm very excited to say my problem with the blind spot turning off and the blinkers not working did not reoccur! I'll need to take few more trips to be 100% confident the issue is resolved, but I'm feeling good about it so far!

mekantor - I'm going to send you an e-mail this weekend so I can figure out how to compensate you somehow for the help. We were literally at the end of our rope with this problem (which had gotten to the point that it happened every time after driving an hour). The dealership was of no help because the won't drive the car an hour to duplicate the problem, so we were getting to the point where we were potentially going to have to replace the car. Now we don't have to!

Very happy outcome. Thanks to all.

Mikey178

Mekantor, can you help identify the part number for my VIN - 4JGDF2EEXDA176615.

I have experienced the same behaviour and been living with it for a few months so finally ready to tackle this before the winter comes through.

Thank you in advance.

mekantor

The newest iteration of your part is A 166 900 02 08 9051, good luck!

Mikey178

Thank you Mekantor. Appreciate the quick response.

Highside23

Hi Mekantor. Any chance you could explain the differences depending on VIN? I have already bought a second hand part but not yet fitted it. I didn't know there were different part numbers!

Thanks in advance and for your help to everyone on here, it's taken me ages to find a decent answer to my problems.

Bigapple

Hi Mekantor, If you're still helping could you please assist with my part number for vin WDDHF8JB3FB085211. Been having this issue for few months now.

AK_FIN

Hi Mekantor! Can you help identify the part number for my VIN - WDD2189931A081035

Thenk you in advance. WDWDD2189931A081035D2189931A081035

mekantor

The part number showing up for your car is A212 900 78 15 9051. Good luck!

Kebm

mekantor, hi! Could you look up the correct multifunction switch for my ML350 please?
4JGDA5HB2EA345903

mekantor

Hello, the current part number for your VIN is A 166 900 04 08 9051, good luck!

Gill Senderov

Hi Mekantor, Will you pleas help identify the part number for my VIN- 4JGDF7CE7DA104240.
I thank you very much in advance.

mekantor

Hello, the current part showing for your VIN is A 166 900 99 07 9051

AleksVT

Hi Mekantor,

Could you please help me out as well?

My vin is 4JGDF7FE3HA754488

Also, does anybody know the part number for the module connecting clip?

Thank you in advance!!!

mekantor

I believe yours is A1669009507 9051.
One of these is probably the clip, they are cheap so perhaps get both: A0008230245, A0015459373

AleksVT

Hi Mekantor,

Thank you so much for your help!

Do you know the difference between these two part numbers:

166-900-99-07-64-9051
166-900-04-08-9051

Thank you again!

mekantor

A16690004089051 has code +835 on it for "South Korea version" so I figured that wouldn't be the right one.

Also your car's datacard has code 806 - "YoM X5/1" ... A16690004089051 does not include that one, but A16690095079051 does.

For both 9051 is the color code - Black

P.S. - I don't know where you found 166-900-99-07-64-9051, I don't see it for your VIN.

AleksVT

Thank you so much for your help but it's so confusing....

I asked buymercedespartsnow.com the same question and this was their response:

166-900-99-07-64-9051 does not apply to your vehicle. 166-900-04-08-9051 shows to be the correct one for that VIN.

mekantor

EPC shows that A-166-900-04-08-9051 does apply, so it should be good. I can't find A-166-900-95-07-9051 (my original suggestion) at the typical US dealer catalogs, so maybe that one is intended for other markets.

Not sure where you originally got A-166-900-99-07-64-9051 from, but yes I'd agree it does not apply.

Yeffsy

Mekantor:
I read through the X166 forum regularly and I remembered this thread because of how cool it is that you help out looking up the right part number for people. Yesterday we took a trip to the mountain and our 2015 GL350 started doing exactly what is described here. Can you look up the correct part for my VIN 4JGDF2EE7FA546163? I saw someone mention that the replacement bolt and clip only cost them $8.50. Can I get those part numbers also?

Thanks...Jeff

mekantor

Hello, this is what is listed for your car: A166 900 01 08 9051

The clip is one of these: A0015459373, A0008230245. Not sure which, but they are a few dollars so if you get them please post photos. Good luck!