DI_a028 — Secondary Shifter Muted
Full alert identifier: DI_a028_secondaryShifterMuted
Alert description
The drive interface (DI) electronic control unit (ECU) detects that the secondary shifter (CCCM or PRND) is muted because FSD is active.
Potential impact
Secondary shifter (CCCM or PRND) button presses are ignored while FSD is active.
Set condition
Set when FSD is active and a secondary shifter button press is detected by the DI ECU.
Clear condition
Clears when FSD is no longer active.
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of DI_a028.