mr.mbenz

I am not sure if this is an isolated case, but recently I have noticed at between 12 - 13 mph, the gear shift change is quite noticeable. It does not seem a smooth shift. I have noticed this happening after using the manual mode???
Have always left in the C position.
May have to test an another GLK...

Anyone with similar outcome?

chillertwist

you'll feel it more in Sport mode. In C mode, I feel it also in the 1/2 gear range... but not all the time. Usually it's most noticeable when the engine is cold.

RedRover

The only shifts that I find out of character are also at or near 10-12 MPH. But it's when I am slowing down and the thing downshifts......It's rougher than whatI would do with a stick shift. It is also highly intermittent.

mr.mbenz

thanks guys for your input.
When I am at dealer next...I will mention it.
Strangely, it has been happening intermittently.

Chillertwist, you mentioned it happens when it is cold, but for me it happens after I have been driving for a few hours....

RedRover, during downhills, the GLK does a remarkable job of downshifting without any "jerking" feeling...

MBRedux

This is common issue with many new ECU driven trannies. (You think your GLK has issues, VW’s DSG type transmission has become a nightmare for many VW and Audi owners. The Mechatronics Units on tens of thousands of cars are malfunctioning worldwide.)

It’s a firmware glitch that they are working on and will most likely be *reflashed* or downloaded into your car at no charge when it’s in for routine maintenance.