Electronic Parking Brake Issue after rear brake pad change

[Pillak]

Hi

I changed the rear brake pads and rotors after putting the epb in maintanance mode and releasing it from maintanance mode after the job. I ensured that I listened to the parking brake motor wind out and back in the maintanance mode, which helped compressing the piston with minimal resistance. However the electric parking brake is showing the following error messages: "Electric parking brake system problem. Parking brake not available. See dealer". Tried recycling multiples times, but to no avail. I would hate to take it to the dealer, so please help!

Thanks in advance.

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[Pillak]

Here are the codes that are triggered.

 

[Victorofhavoc]

When you took them out of maintenance, you did get the success notification right? And you cycled the parking brake a few times?

That error and codes are saying they don't see the brake caliper epb as serviceable and that happens when they're disconnected or still in maintenance.

 

[DK 24LC ITS]

I would make double sure the sensors are plugged in, then clear the codes and cycle the PB 3-4 times. I always do EPBs manually so I'm not familiar with maintenance mode issues.

 

[ModJPB]

I did mine last year, putting it into maintenance mode, swapped pads and taking out of maintenance when done. All went effortlessly.

Do both epb motors make noise and loosen/tighten when engaging/disengaging the epb or enabling/disabling maintenance mode? Did you do anything with the brake fluid? Check fluid level?

Make sure the epb motor housing isn't cracked or damaged. Check wires for damaged insulation, cuts, or disconnected. I would go around and unplug and replug all the connectors. The rears connectors sometimes feel like they are plugged in but require extra force to get the clip to lock it in place.

 

[Pillak]

Finally figured out what the issue was. I had my hunch it was not the epb actuator or connector.The pads were not 14.5 mm as advertised, it was about a mm thicker due to the shims. Took out the shims and sanded it down couple 10ths of a mm till it was closer to 14.5 mm. When you add the thickness of both shims and sanding, it comes to about 2mm. Immediately noticed that the calipers slide in easily and there was more play. Hopefully removing the shims wont create problems down the line!
FYI, I used the R1 concepts discs and pads from Rock Auto. https://www.rockauto.com/en/moreinfo.php?pk=14174753&cc=3454950&pt=13824&jsn=430
As a side note, I had to disconnect the battery to clear the brake fluid leakage code in order to access the maintenance mode again.

 

[optronix]

I feel like manually winding the EPB is the only way. No tool purchase, no fuckery involved. Just wind that fucker back and G2G.

 

[Pillak]

I feel like manually winding the EPB is the only way. No tool purchase, no fuckery involved. Just wind that fucker back and G2G.

I agree! The whole epb maintenance mode is a pain! Will do it manually next time.

 

[Victorofhavoc]

I agree! The whole epb maintenance mode is a pain! Will do it manually next time.

Honestly just buying the proper windback tool would be the easiest. I just remove the motor and windback from there since I had the sockets already, but if I didn't a 30$ tool is faster and easier than the electronic shenanigans.

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