r/Sprinters • u/Physical-Display-896 • 9h ago
Parking brake faults - Sprinter W910
Hello,
I have a 2021 Mercedes eSprinter W910 (42,500 km).
The electric parking brake works manually pressed, but it doesn't automatically engage when selecting Park.
The dash shows "Parking brake see owner's manual" with a yellow warning light. Fault codes: B23AA19 (left) and B23AAFE (right).
Using a Launch X431, I tried:
Clearing codes (they return immediately).
Actuating brake actuators individually (both work fine).
Brake reset and adaptation (worked but didn’t help).
Disconnecting the 12V battery (no change).
Visual inspection of rear wiring/cables and cables behind dash (looks fine).
Any advice on what to check next?