Many thanks porscot. The motor is actually made by TRW. The brake motor appears to be generically known as 8K0998281A, and the identical (in looks!) part is used across the Audi range. However, having just ordered one for an A4, the centre spindle is larger on the Macan (but the A4 part still fits, ...

Hi. 2015 S Macan...following tips from the forums I replaced the rear brake pads at the weekend... Don't have PIWIS so attempted to rewind the e-parking piston using a 12v supply, which wasn't entirely successful, so resorted to removing the motor casing on the back of the piston and winding it back...

So, VAG do a filler hose (part no 000012499) for £8.51, which makes a perfect connection with the adblue filling point, plus, they sell 10L for £13.03, which is cheaper than anywhere I can find on the 'net.The filler pipe also screws nice & firmly on to the 10L container...Previously I've bought 10L...