just did this brake job today. try using 12v @ 1 amp from an old tablet charger / misc power converter and holding it on the two prongs in the connector. worked like a charm and doesnt burn the motor out
Did the same on a 2017 Q5. On the passenger rear, the positive goes on the top connector but on the driver side, the positive goes to the bottom connector. You'll be able to tell right away by the sound of the motor when it engages. If it struggles, its trying to engage so switch the wires. Once the motor is backed out you can use a c-clamp or similar clamp tool to press the piston in. I used a little 12v Lithium Ion battery from my fish locator. worked like a charm.
Planning on doing the rear pads only on my 2013 Q5 this weekend. Is the e-brake bypass absolutely necessary, or is it only for those models that automatically engage the e-brake when parked? I appreciate this very informative video as it will be my main source to follow when I work on my brakes. Looking forward to your reply. Cheers
Necessarily. The first option: you turn on the repair position of the parking brake in the VCDS or similar program. It works for a few seconds, then press the piston in any way. Option two: apply 12 volts from the battery to the pins of the motor connector. If the piston comes out, change the polarity of the wires. After stopping the engine, repeat the procedure of pressing in the piston. Option three is shown in the video, it is not the best, since you can break the motor mount and break the tightness of the junction of the motor and the parking mechanism.
Nick, I tried the manual way with the c-clamp and the flat head though the piston shoe is not moving for me to be able to put my caliper back on and I went counter-clockwise too.
Hopefully, the video was helpful. The clips were probably fine (or I didn't have new ones - I can't remember). If you have new clips I would recommend using them. I think we ordered lube on Amazon and it hadn't arrived yet - you should also use the lube. I only had my buddies lift for that day, so I wanted to help others by filming this. Those are good questions.
You should use those. The clips were fine and didn’t need replacement. The lube was used on the other brakes and then added to this one (we forgot when we were filming)
Whether backwards, upside down or sideways, just always think about the nut or bolt "face." You want that face turning left to loosen and right to tighten.
Hello, Nick. I just completed my 2018 Q7 entire brake job myself, the rear calliper and the rubber cover around the calliper piston made a small damage cut, while I tried to push the piston. Does this cause any problems?
The rubber piston seal must be replaced. Dirt and water will enter the gap between the piston and its cylinder and lead to corrosion of the piston. And this is a completely different price for repair costs.
Don't ever remove the caliper like that!! It can damage the caliper, and motor. Make sure you use the electronic method, scan tool or not. It will save your calipers' life or motors' life.
