c280 cruise control issues - PeachParts Mercedes-Benz Forum

msethk · #1 05-01-2007, 02:28 PM

I have a 1994 c280 that i have been having problems with. the cruise control seems to run sporatically. Mostly what I experience is that it will run during the first couple minutes of running but after that the cruise fails to work (with rare exception.) I ocassionally (once a week or less) see an abs/asr light but it appears to reset when the car has been restarted and am not sure if it is related. I have done a search here and found info that refers to possible brake switch or cruise amplifier ( but cannot determiine from the forum if mine has one.) does anyone have any ideas how I should approach this??

thanks in advance!

msethk

Arthur Dalton · #2 05-01-2007, 05:26 PM

Check for equal tire size/pressure......

msethk · #3 05-01-2007, 10:16 PM

i had taken that into consideration as well so thanks for re-affirming that pressure might be a problem. I drive a lot of highway miles so I watch the pressure carefully and it has been ok...

Arthur Dalton · #4 05-01-2007, 10:23 PM

Then I would get the codes and see if they register Brake Switch..

Tire sizing is very sensitive on ASR equipped chassis b/c the ECU compares the speed of all four tires . I have even seen a worn tire of the same size/make trip the CC.
It usually shows up at higher speeds b/c that is when the differential between each tires shows up the most due to higher wheel rpms..

msethk · #5 05-02-2007, 11:30 PM

are there codes stored even if the lights are not currently on?

interesting about what you say on the tires. i had to replace one of my tires due to a puncture not too long ago and it would have about 5000 less miles than the other 3 tires. (all four were replaced about 6 months ago.)