Need help!!! CCM brake

This is something only a professional can help you fix. That ABS/Stability Control/E-Diff ECU is $4700 here so I would want to make sure that was the problem before swapping it and still having a problem. If the SD3 cannot read the outputs of the ECU, something is amiss. I assume your tech checked all the connectors to make sure nothing is loose? Those ECUs are not high failure items.

If you drive her at all, make sure it is not raining.

 

Fire the engineer and hire a mechanic.

 

+1.

This might sound harsh.. But any nitwit can plug in the SD3 or Leonardo and get the reading. It means that the computer doesn't have any faults. Now, fix the problem.

I like to start at the beginning. Is the brake reservoir low on fluid? Then, flush the damn system. Braking systems have two circuits in an "X" one front wheel and opposite rear wheel. It sounds like one of your circuits is plugged or doesn't have fluid in it or leaking. The Bosch engineers designed the system so that even if the abs/asr fails, you can still stop the car and the braking system still works fine. The rear might lock with braking and ASR/ABS won't work. If you know all this already.. Then you know you need to hire someone else. fWIW, those abs pumps are pretty reliable.

Now you need someone who will go through the system and fix the problem.

Good luck.

 

Well he is going to need the SD3 but he needs someone using it that isn't waiting for a big red neon arrow pointing at the part to change and that is what these guys seem to feel that is what the computers are for.

 

Such a valid post because I feel that these days so called mechanics have merely become "fitters", take the old part off throw it in the bin and fit a new part, there is no troubleshooting, no "lets try and fix what is not working".

My motto has become to find the guy who is prepared to take the time and do things properly and yes pay for that time because I know he will do the job properly as apposed to simply a trial and error "remove and fit" type job. Its really worth paying for a good mechanic.

 

If you can't get fluid through the caliper the crossover tube may have become plugged. When the brake fluid gets old it will turn to a sticky substance. Clean the tube and re-bleed the caliper. Good luck!

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