Circuit/System Verification
WARNING: This page is about a different car, the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON.
- Verify DTC B356A is not set.
- If the DTC is set
Refer to DTC B356A
- Go to next step: If the DTC is not set
- If the DTC is set
- Verify the lane departure warning indicator turns ON and OFF while pressing and releasing the lane departure warning switch.
- If the indicator does not turn ON and OFF
Refer to Circuit/System Testing.
- Go to next step: If the indictor turns ON and OFF
- If the indicator does not turn ON and OFF
- All OK.