2015 GLK 250 Shifted into park while slowing down
I've got a 2015 diesel GLK 250. I've had it for three years, been absolutely great so far! I do regular maintenance on it and it's never given me any issues. Tonight it did something weird though. I was taking the back roads home, and as I was stopping at a stop sign it shifted into park. I was still moving slowly at this point. I put it into drive, pulled forward a bit and it went into park. I put it into drive and it drove fine on the highway until I came to a small town. Slowed down for a stop sign and when it shifted down into D1 it shifted into park. I was doing maybe 5km. I pulled over into a parking lot and tested in the parking lot - if I put it into manual I could come to a stop and go again without it shifting, but outside of manual it would shift into park. There were no funny sounds while driving, no warning lights, nothing. I parked it for a full half hour and had a bite to eat. I started it up again and drove around the parking lot, no issues. I headed out on the highway and drove the 20 minutes home, I had no more issues with it going in to park.
I've been trying to google and search the forum and have found people having problems getting out of park, but no issues of people having it go into park when they are coming to a stop. If anyone knows why it would do this, please let me know! Thanks, and have a wonderful day!
Correct, it stops abruptly. Just before I came to a stop, while the wheels were still turning, it shifted into park which meant the wheels stopped turning and I stopped rather suddenly!




I've driven to work the last two days (nervously) and around town without further incident. Which is good, but I still have no clue why this happened or if it'll happen again. Is it a flaky door sensor? Was the computer glitching and telling it to go into park? Is it bad wiring that was shorting out? Is the transmission going? Is the parking button going bad and was stuck pressed in? I have questions and I don't know how to find the answer.
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This is the service bulletin on it:
https://www.tsbsearch.com/Mercedes-B...54-25-P-056472




This is the service bulletin on it:
https://www.tsbsearch.com/Mercedes-B...54-25-P-056472
I almost want to state this shouldn't be a TSB, but recall ... the vehicle shifting into Park at 6mph , or 4mph, could result in significant damage or potential personal injury.
I've downloaded the TSB from the NHTSA website and will review further ...




This is the service bulletin on it:
https://www.tsbsearch.com/Mercedes-B...54-25-P-056472
Not OK as of production date 05/2012
OK as of VIN
166 … *A206996
204 … *G103135 <<<<<<<<<<
212 … *A776831
218 … *A090383
246 … *J153923
246 ... *N051707
I checked the VIN on our 2014 GLK - the last 7 characters starts with *B208xxx" , so not susceptible to this TSB.
@lonewolf7002 ... does your VIN end before or after *"G103135" ??
Last edited by calder-cay; Jan 6, 2023 at 09:51 PM.




Not OK as of production date 05/2012
OK as of VIN
204 … *G103135
My interpretation is the issue starts with production date 05/2012 and ends with sequence number 103135. The "G" indicates the assembly plant and is not, as far as I know, part of the sequence number. ("B" is Sindelfingen, "G" is Bremen. My 2014 is "G" 31xxxx.) Your sequence number being 32xxxx puts it well after 103135.
[Edit] Wait, I would expect Lone Wolf's 2015 to be after the cutoff, too. Also, when I looked up my VIN on the NHTSA web site, that service bulletin did not pop up, which I assume means it isn't applicable.
Last edited by John CC; Jan 7, 2023 at 11:19 AM. Reason: Typo typo




Not OK as of production date 05/2012
OK as of VIN
204 … *G103135
My interpretation is the issue starts with production date 05/2012 and ends with sequence number 103135. The "G" indicates the assembly plant the assembly plant and is not as far as I know, part of the sequence number. ("B" is Sindelfingen, "G" is Bremen. My 2014 is "G" 31xxxx.) Your sequence number being 32xxxx puer ts it well after 103135.
Geeeez, did I ever screw that up (I'll fix my post). I screwed up in two ways ... I misinterpreted AND just discovered that's not the sequence for our 2014 !! I went out and checked the VIN plate under the windshield AND the plate under the passenger seat AND checked the paper registration... it's actually
G208xxx.
I need to find the old photo of VIN I looked at.
< smacks forehead >
EDIT ... okay I was looking at old photos of VINs I took photos of ... the B42xxxx is my wife's 2001 E320 (which has sold) ... it was next to the photo of 2014 GLK VIN
Last edited by calder-cay; Jan 6, 2023 at 09:59 PM.








G103135
EDIT ... WHOA! I wasn't paying attention ... you're the OP who posted the issue , and it was because the TSB description ...
Last edited by calder-cay; Jan 7, 2023 at 05:08 PM.




Seems like removing the key "restarts" the car and allows the transmission to behave normally as techs are having trouble replicating the issue.. at least until it decides to happen again. Not something I want to risk finding out the hard way so most likely will be replacing the same.




Seems like removing the key "restarts" the car and allows the transmission to bNehave normally as techs are having trouble replicating the issue.. at least until it decides to happen again. Not something I want to risk finding out the hard way so most likely will be replacing the same.
What I mean is, maybe a few others have reported the same issue and NOW there is a some sort of recall.
I would contact Mercedes to double-check.
We still have our 2014 Base (not diesel) and running fine.
You ended your Reply with, " ... so most likely will be replacing the same"
Does that mean you will REPLACE the 2015 for another MB ??




