ESP family
ESP_a086_BrakeSwitchImplausible1
Not Available
What does the ESP_a086_BrakeSwitchImplausible1 alert mean?
Brake Pedal Switch Plausibility monitor against master cylinder pressure sensor failed.
What you'll see in your Tesla
- Not Available
What triggers it
Master cylinder pressure rise is not correlated with switch state
When it clears
Check BLS mounting, reporting status, and harness integrity. Run Toolbox Brake Line Switch test, replace BLS if necessary.
Potential impact
Degrades automatic braking functionality
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
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