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I'm doing a little autocrossing and small-track events, and I'm frequently seeing this:
This has never happened on the street (probably because it isn't being driven that hard), but shows up a lot when the car is being pushed. I seems to happen immediately after a little (and I mean VERY little) wheel spin on low-speed corner exits. It causes the car to throw a throttle position sensor CEL, pops an alert that it has disabled stability control, and drops the car into limp mode. A restart immediately clears the stability control alert but leaves the CEL on. A couple more restarts seems to clear he CEL light.
I've not seen this posted so I presume that it is not a common problem. What should we start looking for to fix this?
I've actually had a similar problem on regular driving in the rain. I had a little wheel spin and then cel light went on. I was also in limp mode and the car stuttered a little under acceleration. Restart cleared it after one try.
I had a failed throttle actuator once in an SLK. it started infrequently, but eventually failed completely. I needed a new throttle valve/actuator assembly. Was under warranty.
Car I just did head bolts on, when we took it for a test drive, car went into limp mode just like this. One of the throttles had a piece of air filter stuck in it.
Update - dealer service report says they "found no codes on ME control unit" - I guess because the check engine light self-clears after several cycles? I thought something that looks as major as this would have been saved.
They did a "541011 QUICK TEST PERFORM" (drive it like you stole it? I probably don't want to know what happened here.) and found code C219700, followed guided tests, and replaced the accelerator pedal.
I'll update in a couple weeks when I next have a chance to test it.
quick test is when you hook up the computer for diagnostics and check for codes (doesnt even involve driving the car). guided test - is to do the testing for the outlined fault.
And I have the same problem aswell when I floor the gas it goes into limp mode and the accelerator pedal is deactivated and I get esp unavailable the thing is it’s so infrequent I assuming it only happens when there is a wheel spin because I purposely drive it hard asf today and the limp didn’t happen but I still have the codes
Was the c219700 the only code you got? Or anyone else cuz I will replace the accelerator but I’m getting the other code so I don’t want to through parts at it
05-24-2015, 03:09 PM
