glk-350

Bought a 2010 GLK 350 used almost a year ago. today the check engine light came on and it would not go over 60 mph. I pulled over and shut it off, and it wouldnt turn over again. What is the problem?? Please respond asap, car has only 44k miles on it

Showa

It could be anything. I would go scan the computer, get the error code, report back then we will be able to help. GL

bop11

When you say it would not turn over, do you mean the engine won't crank? Could be as simple as a dead battery not powering the electric fuel pump, or as bad as you ran it out of oil and the motor has sized. If the engine cranks but does not start, then the battery is OK but the fuel pump may have bit the dust (have you run it out of fuel in the past?) or something with the computer. Since you pulled over to the side of the road, it does not sound like transmission. Any lights or information on the dash? By now it has probably been towed to the dealer or stolen to a chop shop.
Let us know

hondafan

When you say it wouldn't go over 60, is that in every gear? The only thing I could think of would be the main engine computer, but that's not common, and we don't have any other real information to help. Whether you have or haven't gotten it taken car of already keep us posted. Good luck.

glk-350

it would crank but would not start. It is at Mercedes right now being fixed, but i was thinking it was the CPU. The only light I got was check engine.

glk-350

I will get the codes when i pick it up, thankfully I have another car

glk-350

it would shift fine by itself and when I used tip-tronic to shift down to see, but would not rev over about 4k..

glk-350

also i have come very close to running it out of fuel but made it to a gas station just in time

bop11

Have not heard much problems with the CPU's in these cars. Does sound like fuel starvation. The fuel pump is in the tank and uses the fuel convection to cool it. Running out of fuel is a cause for the fuel pump to fail or degrade to low output pressure. It will be interesting to find the real culprit.

Road_Ghost

Please don't make it a habit to run it under 1/4 tank. Better to keep it filled than not.

NYCGLK

limp mode triggered by any number of variables? Without the code it's just guessing.

NYCGLK

That actually depends. If you drive often then sure.

If your car is parked for long time, you better off leaving little gas, and going straight to gas station when you start driving again instead of leaving full tank and then driving with full tank of "old" gas.

MBKLUE

I've left cars for a couple of years, on a number of occasions, with a full tank of gas (cars with carbs., mechanical and electronic fuel injection (and no "stabilizers" added). Never had a problem starting up and running on the old fuel.