Hello guys, i have problems with c63s w205 2018YO.

P0AB602 - engine support B have problem say Launch. What is B? Left or Right? I have left wheel car.
C174AFB - The learned value of the control unit operating parameter "COLLISION PREVENTION ASSIST" is outside the valid Range - what problem? I check logo MB FRONT and check sensor, I removed it and took it apart. everything is clean like in a pharmacy. contacts are chic without oxidation. collected after a while the error disappeared and appeared again. what's the matter? sensor and wire are in good condition without corrosion.

and i have more error.
P023409
carthe car sometimes loses power as if the turbines are not working. What can be wrong?? After a while I restart and everything is ok. Westgate???


and next problem, the right wheel on the sensor heats up over 75 degrees Celsius. pads are normal. bearing too. What can be wrong??



Thank you for answers.

 

Pls help (( may be this brembo support? Dealer not have info for this

 

******Brakes wise, I would flush the brake fluid well and disconnect the affected caliper from its mount, clean it well at the piston area, manipulate it a few times with a pad spreader to see if it is sticking. Sometimes, the caliper pistons get sticky from dirt or dirty fluid and do not retract properly. Also the brake line to the caliper may have some issue and have a weak spot in it for whatever reason and not be able to help retract the pistons. If you are handy, the calipers can be rebuilt, with new seals and the pistons cleaned with a crocus cloth or similar to remove oxidation or varnish, etc... The brakes will have to be re-bled well. More rarely, it could be a brake pressure distribution valve that is plugged or sluggish, but I would exhaust issues related to dirty fluid and sticking caliper pistons first as they are much easier to deal with. Water or air in the system can cause problems such as yours - proper bleeding and flushing can fix many problems so try that first.

Dunno about your other problem with the collision assist. It could be intermittent ground problem or a defective sensor. A decent scan tool with testing capability to energize the sensor can reveal a lot of problems - but these are more expensive scan tools that transmit as well as receive data. I've never had a problem with mine, but sensors go bad sometimes. It happens.

Good luck with everything. Dunno how many miles are on the car, etc.. or if the car is a salvage car exposed to water, salt, etc.. I've seen several of those on different platforms and they tend to have lots of electrical problems due to corrosion at the bulkhead or even in the fuse box area inside or outside the car. It can get complicated.

 

For the brakes, the front right will always be hotter, there is auxiliary cooler on that side that heats the wheel well.

 

thank you but i check coolers left and right is hot all, why left tire not hot in normally ride?

 

thank u, i check support brake, i have beat in hot race at braking, 35000km my car miliage.

 

I check brake pads and make troll tuning.

and I also saw 2 pads on the side of the pad. I removed one shiny cover. stopped creaking. but the temperature got hotter. I think my wheel bearing is broken. but there are no loopholes. no more heating options. I covered the intercoolers with cardboard for testing.

friends how to walk the piston in the Brembo caliper (support RED ) easily or with little effort?