PPB family
PPB_a023_trailerButtonFault
Parking brake functions degraded
What does the PPB_a023_trailerButtonFault alert mean?
Trailer switch button hardware issue detected.
What you'll see in your Tesla
- Parking brake functions degraded
- Parking brake may not apply or release
What triggers it
Hardware issue is detected with the trailer switch
When it clears
Trailer switch button hardware issue is cleared
Potential impact
Unable to park or unpark
Affected models
Semitruck
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