@George W
apologies for delay.

Probably the best approach would be to continue trying to fix DTC C0050 & C0191 and then inspect the lines and decide from there.

This may ultimately come back to the ECBM, hopefully not, but this thread may be of interest

 

for additional information the „service brake system“ message does not appear immediately after starting the engine but only when driving.

 

 

thank you very much!
it would be a lot of work to remove the EBCM…

 

Today I changed the rear right ABS sensor.
It was a horrible work! Screw was rounded and I had to cut it square with a dremmel that the nut can grip it. After the screw was out, the sensor stuck. No chance to take it out.
take the wheel and brakes away and hammered them out.
Everything put together and tested.
Error is still there…

put the Tech2 on and drive a round to check the voltage on each abs sensor. What happend, only voltage for the left front abs sensor visible.

put the left rear abs Sensor out to check the failure message but still rear right Sensor failure.

 

During driving I saw only the speed for the left front wheel... the other ones was 0


after than I park the car and tested during engine one the ABS Sensors.
And now the other sensor have failures but if I turn of the engine and put the engine on acc the error codes comes only for the rear right sensor…


soo somebody habe any idea what to do?
perhaps the Module? Im checking now how to remove the module and check the plugs on the module.

 

EBCM module is out but it looks different then from the videos… no idea hoe to open.

 

it looks like it is starting to open a bit in the corner near the screw. maybe water is getting in.

 

ok, but can I open there the module to check the soldering?
somebody any idea where to open?

 

i do not have one off to tell you. but i would guess that area would be a start since that side would be the logic / connector side as the other is the coil side. take a good look at that screw and see where the seam goes or if there are more fasteners.