IDB_a030 — Fluid Leak Detected
Full alert identifier: IDB_a030_fluidLeakDetected
Alert description
The IDB has detected a hydraulic brake fluid leak.
Potential impact
Only Electronic Brake Distribution (EBD) may be available. In the event of a primary chamber internal leakage or leakage on both external circuits, the IDB may enter fallback mode and relinquish controlling status to the Redundant Control Unit (RCU). The RCU may assume controlling status and perform backup brake boost, but Anti-lock Brake System (ABS), Brake Traction Control (BTC), Vehicle Dynamics Control (VDC), Panic Brake Assist (PBA), Hydraulic Fade Compenration (HFC), Controlled Deceleration via Parking brake (CDP), Brake Disc Wipe (BDW), External Brake Request (EBR), and Secondary Collision Mitigation (SCM) may be unavailable. Increased braking effort may be necessary to achieve desired deceleration. The vehicle should be driven with extreme caution.
Set condition
The IDB detects an internal or external hydraulic brake fluid leak or detects air in the hydraulic system.
Clear condition
Clears when external leaks are no longer detected during operation, or internal leaks are no longer detected during the next hydraulic testing phase on startup or shutdown. The brakes may require bleeding. If the condition persists, the IDB module, brake lines, jounce hoses, or brake calipers may require repair or replacement.
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of IDB_a030.