Electronic parking brake issue

[wes972397]

Hi I have a 2017 Mazda CX5, which has a fault with the EPB.

I noticed that my brake pads were wearing unevenly so decided to change them, after removing the the right caliper I realised that the car wasn't in service mode, so I tried to reinitiate. Unfortunately, as the right caliper wasn't attached to the brake disc this led to the EPB actuator driving the piston out of the caliper.

I managed to reassemble the caliper and got the car back on the road, however since then I have been experiencing a yellow fault light on the dash every time I apply the EPB (the fault light will disappear when I remove the EPB whilst driving).

Ive plugged the car into the OBD2 reader and the following DTCs are logged;

C2005 07 - 48 Mechanical problem of electric parking brake motor gear unit (RH)
C2006 07 - 48 Mechanical problem of electric parking brake motor gear unit (LH)
C112A - Actuator disengage

To try and resolve the issue, I have followed the Mazda247 forum advice and I have performed the following ;

1. Replaced both rear brake calipers
2. Fitted a new actuator which i've also tried swapping between sides
3. Cleared DTC fault codes
4. Disconnected battery for 30mins
5. Replaced battery with new one
6. Cycled service mode many many times, including pumping brake to seat pads
7. Taken the car to Mazda garage to recalibrate

I have also taken it back to the main dealer in the UK where they kept the car for a day but couldn't solve the problem. Their advice was to replace the calipers and EPB actuators again and then replace the EPB controller, all of which would cost me ££££. but Im not convinced this would necessarily resolve the problem.

Is this something that anyone could help me to resolve? Im wondering if the car needs a hard reset of all parameters and reprogrammed?

Thanks

Wes

 

[rovi]

I hope this video helps.