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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.

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