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Replacing rear brake pads on a P+

Dangerous Fish

Pilots the Millennium Milkfloat
Supporting Member
Jul 21, 2016
2,229
5,400
UK
I saw a YouTube of someone doing like a 20k service that put it in tow mode to pull the pads. They then pulled the electric plug so it would not re-engage (Which would be bad if the caliper is off).
Yes, you have to do that to unlock the parking brake and keep it off, but because they automatically adjust for the pad thickness as they wear down, it's not possible to push the piston back fully. You have to take off the motor and wind back the mechanism manually.

I just wondered if there's an alternative method so you don't have to remove the motor each time you want to put new pads in.
 

Dangerous Fish

Pilots the Millennium Milkfloat
Supporting Member
Jul 21, 2016
2,229
5,400
UK
I tried retracting them electrically and then disconnecting the wire connector. But I still had to retract it manually.

I bet there is probably a way to use a battery even a 9v might work.
This is what I'm thinking. Or maybe there's a hidden service menu where it can be done. What's needed is access to the workshop manual...
 

SD_Engnr

Active Member
Mar 24, 2016
1,836
1,526
San Diego
Is the only way to retract the piston fully in the rear caliper to take off the parking brake motor and wind it back in?

As far as I know, and based on others who have replaced pads multiple times(track rats), yes. I found that out last weekend when I went to install the factory shim on some aftermarket pads. So, when I have more time I will mess with it. For now, I get to deal with rattling brake pads... :mad:

These OE calipers haven't been designed with track days/racing in mind...

They most certainly have not. Pulling calipers to swap pads adds more time than is necessary. The non P3D+ calipers seem to be much easier. o_O
 

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