DPB_a017_largeLeakageDetected

Large Leakage can be caused by internal or external loss of brake fluid.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

Power braking assist reduced
Braking may require increased effort

Impact

System will request Hydraulic Boost Compensation when driver pressed the brake pedal.

Description

Large Leakage can be caused by internal or external loss of brake fluid.

Cause

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

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

Models

Model Y 2025+

Visibility

customer, service-fix

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