hello,

i have the BAS/ESP on the dash , and the traction control light slightly on.

error code that has been register:
C1200
C1140
C1141
C1025

the garage said that it must be the pressure of liquid brake sensor that is the problem.

From your experience ,are you agree with this diagnosis ?

regards
PS: i try to turn fully right and left but it change nothing .

 

oli you can download the service manual for your car. When you have it downloaded look at the index of DTC and there you will find the odes C1140, C1141 and C1025. The manual will give you the section and page number to test/repair each of those codes. You can find a lot of information here in permanent "sticky" upper section of trouble shooting and tech section of the forum. Click this link to go to the service manual download, it is free: service manual
You may have to replace the vacuum brake booster or the ABS module. BE CERTAIN YOU HAVE A VERY GOOD BATTERY! A weak battery on a Crossfire will cause a multitude of problems. Many parts can be found on ebay. They will be used, but I have had good luck with them and they are considerable less expensive than buying new Mercedes parts.
I haven't heard of anyone finding it necessary to replace the brake booster on a Crossfire; Are you certain the fluid used in your brake system has always been the correct fluid? Several people have had to change the ABS controller/module, including myself on a 2005 CLK 500 ( which is very similar to the Crossfire )
Use the search box in the upper right corner of the forum and you may find symptoms that you are experiencing and a solution.

 

I think they are moving too fast with their diagnosis.

First, if you drive the car, does the speedometer work? IF it does not, it's the RCM or a fuse on the RCM. If the speedometer does work, I'd replace the battery first, then do the 'all the way to the left and right" thing again.

If you still cant get the lights to go out, then only then would I change the switch in the brake controller.

 

Also, after you go all of the way to the left and all the way to the right you must go back to center and turn the engine off for a few minutes and then restart.

 

hello , i bought the sensor the brake pressure sensor .

but i just saw that there's two sensor on the just under the brake liquid reservoir .

which one is the brake pressure ?

regards

 

 

hello , finaly i change the one on the side and the error has disappear
regards

 

Very good. Thank you for telling us the correct repair!

 

Thanks for the heads up. I have the same issue and am looking for the sensor myself. Do you have the part number and where you bought it? Thanks