DPB_a007_PMCLeakageDetected

A brake fluid volume leak is detected in the master cylinder.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

Power braking assist reduced
Braking may require increased effort

Impact

System will be running with internal degraded pedal map. Braking may require increased effort.

Description

A brake fluid volume leak is detected in the master cylinder.

Cause

Loss of brake fluid in the tandem master cyclinder or pedal feel simulator. The monitoring calculates a leakage rate in the master cyclinder out of the volume loss over time during a brake event. An alert is set if the caclulated leakage rate exceeds a critical threshold. This threshold is a result of the vehicle backup calculation and is therefore vehicle-specific.

Clear condition

No internal issue is detected after changing operation cycle. If the condition persists, the DPB module may require replacement.

Models

Model Y 2025+

Visibility

customer, service-fix

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