EPB alignement after caliper change

comoditor
Posts: 3
Joined: 20 Apr 2012, 20:12

EPB alignement after caliper change

Unread post by comoditor »

I wonder if there is a need to connect the computer for the EPB alignement after the caliper change. My local mechanic has checked his diagnosti tool and there is no option for epb alignement with thesiis.... i dont want to waste my money going to the official workshop....

can somebody answer me?
Isola
Posts: 26
Joined: 15 Aug 2011, 12:28

Re: EPB alignement after caliper change

Unread post by Isola »

Basically the answer is no. The EPB will calibrate itself, but it may need several engagement and release cycles before the fault indicators turns off.

Have you replaced the calipers already?
Isola
Posts: 26
Joined: 15 Aug 2011, 12:28

Re: EPB alignement after caliper change

Unread post by Isola »

As a sidenote to anyone planning to replace the rear brake pads:
The service manual tells that you need to retract the brake pistons using a tester - and MultiEcuScan cannot do this. However, you can drive the pistons:
1) Remove the old brake pads
2) Apply a brake caliper tool between the piston and the caliper, but DO NOT force the pistons in. Just let the tool sit there.
3) Engage the parking brake.
4) Release the parking brake. The piston will now retract by about 1,5 mm.
5) Turn the brake caliper tool (which is now loose) so that it again sits tightly. Once again, do not force the piston in.
6) Repeat steps 3 to 5 until the piston has moved back enough so that you can install the new brake pads.

This trick utilizes the fact that the EPB is self-calibrating. The brakes will engage until the force is high enough, and upon release, they will retract that 1.5 millimeters.
Make sure you have good quality, sturdy brake caliper tool. The EPB has enough power to break the lightest tools!
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