2000 Mercedes CLK 320 Startup and Stalling Problems

Question

I have a 2000 Mercedes CLK 320 and a couple of weeks ago I brought it into the shop because it was cranking, but not turning over. After driving it around prior and after it wouldn't start I waited like 15 minutes and then it started up again. They replaced my battery and then 2 days later I went back because it was doing the same exact thing. They told me it was the power train control module and the anti theft system that needed adjustment. Yeah three days later I was right back in there and this time I had driven around, gotten home to unload groceries and left the car on in park and then within 10 minutes it turned off. 15 minutes later it started up and drove straight to mechanic again. On the way there I was waiting for the light to turn green and it stalled.

So now they are telling me it is the crank sensor and when it gets too hot it starts burning and shuts down. Cold starting is going to work okay.

ANY SUGGESTIONS, OPINIONS, COMMENTS?

Answer 1

Based on your description, your chances are high that it is the crank position sensor which is COMMON on the Mercedes-Benz. The problem with diagnosing the sensor is the code for the crank position sensor does not remain in the computer unless it is failing at the same time it is being diagnosed. The technician has to take the sensor out and apply heat to it to try and properly verify it is failing.

Good luck!

Answer 2

they should have checked the crank sensor to start out with. normally when it goes out  the car either stalls while driving or wont start when it sets for a few minutes. then when it cools the car will start again . if they charged you for the other repairs, you need to get your money back and take it to a dealer next time.

Answer 3

This is DEFINITELY the crankshaft position sensor. That mechanic ripped you off. They should have suggested this first and they probably knew it was this because it is a common problem. It happened to us recently in our E320.  

Answer 4

Just like the other poster said, they should have known to check the crank sensor first, we see them all the time. You should question where you are taking your Mercedes, especially if they charged you for "adjusting" the modules.