Engine start/stop switch does not work (2020 2021 2022 2023 2024 2025)

Diagnostic procedure 

1. Check for DTCs. If any DTC is indicated, go to the DTC troubleshooting

Also check for 

• ACC relay circuit
• Keyless access/TPMS control unit
• Engine start/stop switch
• SS1+ line short
• SS2- line short
• Harness