HONDO250

During the recent Cold Weather In PA, GLK will not shift into Reverse or Drive, just stays in Park
Diagnostic Code shows no dysfunction present

andreigbs

Happened to me as well, but only in really frigid temps when the car has sat overnight. Start it up and let it warm up at high idle (1500rpms) for a few minutes, then try Neutral first.

Van Ha Nguyen

HONDO250

I followed instruction from a Link on Youtube to re-program the Mercedes Computer to correct the problem. STEP BY STEP-It worked but hopefully, the problem will not reoccur.

andreigbs

I've seen several, none were too great. Would you mind sharing the link? Thanks in advance.

rodfree1

please send me the link to reprogram the computor having the same problem thanks

johny-rock

Had this exact problem this morning, any info or news on how to solve ?
Will call the dealer later in the day but maybe thta is an easy fix

Mmr1

How old is your oil.

greyGLK250

I encountered this same problem today in the cold morning, the transmission seems dead, no response to any shift. I figured that the transmission oil pressure is ok, no leaks; the electricity voltage is fine too because the engine started fine. It looks like a sensor cut off the electricity to transmission. I happened remove the trunk bottom cover in the morning, that cover is to cover the ad-blue refill. so I put the cover back and I can shift the transmission right after.

greyGLK250

I finally figured out why, the main battery needs to be replaced after 10 years. I bought a new AGM H7 battery and installed by myself, this problem has gone...

m00nd0gy

That happened in my ML55. I read the manual and it said stick a pen into shifter and press down. I was able to drive it home in safety mode no faster than 40 mph. The transmission solenoids need to replaced.