A brake fluid volume leak is detected in the master cylinder.
<0.01% (Extremely rare)
Power braking assist reduced
Braking may require increased effort
System will be running with internal degraded pedal map. Braking may require increased effort.
A brake fluid volume leak is detected in the master cylinder.
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.
No internal issue is detected after changing operation cycle. If the condition persists, the DPB module may require replacement.
Model Y 2025+
customer, service-fix
Sign up for Tessie. Try it free for 14 days. Happiness guaranteed.