ESP_a087 — Brake Switch Implausible3
Full alert identifier: ESP_a087_BrakeSwitchImplausible3
Alert description
Brake Pedal Switch Plausibility monitor against master cylinder pressure sensor failed.
Potential impact
Degrades automatic braking functionality
Set condition
Master cylinder pressure rise is not correlated with switch state
Clear condition
Check BLS mounting, reporting status, and harness integrity. Run Toolbox Brake Line Switch test, replace BLS if necessary.
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of ESP_a087.