2012 Audi C7 A6. Rear caliper service mode DIY?

[Ollie]

Maybe there's any easy way to do this but I've no idea?

Is there a diy way to get the electronic handbrake wound back on a 2012 A6?

I have an old obd2 wifi connector, is there a recommended app I could use?

Thanks.

 

[Lyons]

from memory I used Carista to do it on the Golf.

 

[hannakournikova]

@Ollie

 

[cupraricky]

You can also wind it back if you take the motor off and use a torque bit in a drill/screwdriver and turn the piston back.