I just turn the ignition off and the handbrake comes on . IfI want to apply the handbrake with the engine running I just lift the parking brake switch . The switch lights up red when the parking brake is on . If you want the brake on harder you press the foot brake and lift the switch . A message should come on the dash saying "PARKING BRAKE APPLIED"the message stays on for a few seconds , to release the brake just drive off as normal and the brake should release automatically.
Hope this helps .
hi there brianbst1 ans sbk61 had my ds4 2 days now and like the auto park brake a lot but it feels funny that you just drive off and it releses it self then turn off ing and at goes on just got to stop moving my hand towards the brake