Detection of short to GND at Brakeswitch 1 / 2
â–¶ How to fix
- Check the wiring of the two BST brake switches (short circuits ?) - Check the BST (correct switch function ?) - Replace EBS-ECU, if wiring and BST are faultfree
What you'll see
Warning on dashboard / Vehicle behaviour might be changed
System reaction
- ABS and ESC-function is still available - el.pn. pressurecontrol is still available at all axles
Diagnostic depth
Detection
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Possible cause
- Faulty wiring of the two BST brake switches (short circuit) - Faulty BST (incorrect switch function) - Faulty EBS-ECU