DPB_a102_ecuVrOnWhileWdTimeout
Description
The missing watchdog don't switch off the valve relay.
Condition
Erroneous safety logic (Watchdog timeout detection of system chip erroneous). The failsafe logic test tests whether the system chip detects a missing watchdog trigger and therefore swichtes off the gate actuation of the valve relay. If the feedback does not show a switched off valve relay gate this fault is set.
Clear Condition
No internal issue is detected after changing operation cycle. If the condition persists, the DPB module may require replacement.
Potential Impact
System will be running in fully degraded state. Braking may require increased effort. Hydraulic Boost Compensation will be triggered when driver pressed brake pedal.
Customer Facing Message 1
Power braking assist reduced
Customer Facing Message 2
Braking may require increased effort
Audiences
customer;service-fix
Models
Model Y 2025+