Hi all! So a bit of a bizarre one, the white plastic behind the parking button on the middle console has snapped and thus the parking brake can’t be applied, no fault codes or anything and but the plastic clips that it usually pushes down onto the circuit board with now don’t move, does anyone have a circuit diagram or know how the handbrake operates so I can come up with a temporary solution or maybe my own switching mechanism before I have to buy an entire gear selector console for a few bits of plastic 😭 any advice would help, I managed to push the 2 buttons on the circuit board and get the handbrake to activate once but then I think I pushed them out of time or something and triggered the fault but I can reset that by disconnecting the battery. After which hopefully I can have a temporary fix in place that won’t require resetting everything each time haha.


Photos for reference, I assume the white piece in the centre is sloped inside the holes which are either side on the black plastic but when I removed the console I saw shards of white plastic which I’m guessing came from there. The handbrake off direction still works and I can see the black plastic legs (not shown) move when the switch is pulled in that direction.

 

This is not a common problem and I would get a used part off EBay.
Should be plenty of them on there
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Only problem is it comes as a complete unit with the gear selector included, I can’t buy the parking brake lever seperate 😭

 

There are two switches for each direction, one common ground for all switches, 4 separate connections to the parking brake module "inputs", each of which has a pair of resistors in the switch assembly, working as a voltage divider ( to ground) the centre of which connects to a switch. This allows the EPB module to detect a wire being left disconnected, as well as switch state. Should be easy enough for you to measure the resistance with switch open, and closed. Open you'll be measuring both resistors, closed, just the one. Suppose it's effectively just a non latching DPDT switch with 8 resistors.