VCTRAILER_a201_hsdTestFailed

The vehicle trailer controller (VCTRAILER) ran a High Side Field-Effect Transistor (FET) functional test, but the voltage feedback was below the necessary threshold to confirm High Side FET functionality.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

Trailer brakes may be unavailable
Exiting and re-entering vehicle may restore functionality

Impact

Trailer brakes may be unavailable or may not function as expected.

Description

The vehicle trailer controller (VCTRAILER) ran a High Side Field-Effect Transistor (FET) functional test, but the voltage feedback was below the necessary threshold to confirm High Side FET functionality.

Cause

High Side FET functional test does not measure voltage greater than 2V, but a trailer is still detected based on open electrical load.

Clear condition

The High Side FET functional test passes, or a trailer is no longer detected (no open electrical load).

Models

Cybertruck

Visibility

customer, service-fix

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