Guys anyone ever have this problem you are stopped at a stop light for about a min or 2 and u keep your foot on the brakje after a little while the car bucks a little forward and i didnt shift my feet at all any ideas? this has been happening a lot at long stop where my foot i on the brake for a while

 

It's your a/c compressor kicking on.

 

In my 2 cars (CLS6 and Altima SE), I sometimes feel the pedal going back just a bit. I think thats normal. But having the car moving forward might be a problem with the master cylinder? I am just guessing.

 

Compressor cycling on/off. The number 1 most annoying thing with this car, IMHO.

If you've got the heat on, hit the A/C off button, that'll help. But the summer is coming, so it's going to be happening alot.

 

A/C Compressor.

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Juker008

 

This is why I always turned the A/C off before closely pulling into the garage.