DPB_a017 — Large Leakage Detected
Full alert identifier: DPB_a017_largeLeakageDetected
Alert description
Large Leakage can be caused by internal or external loss of brake fluid.
Potential impact
System will request Hydraulic Boost Compensation when driver pressed the brake pedal.
Set condition
Plunger is not possible to build up necessary pressure in brake system. Caused by: Significant loss of brake fluid - external (broken brake pipe) or internal (seal or valve defect). Large Leakage alert is assumed if the pressure sensor shows significant lower values than expected at maximum possible plunger position.
Clear condition
First ensure that DPB ECU has fallen asleep. Execute the start of a new OtherCycle. Wait for at least 10 s without exerting any brake intervention (i.e. no apply of the brake pedal, hand brake, APB, value added function or similar).Good Check is performed, in case of STSpct is successfully performed.
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of DPB_a017.