BC_w001
BC_w001_leftIndicatorFail
What does BC_w001 mean?
Tesla warning code in the BC (BC) module. The left indicator is not functioning as expected and may be flashing faster than normal. If a fault (open, short, over-current..etc) is detected on any of the driven lamp outputs required for signaling (which will be different for each vehicle region), then the frequency of the flashing signal sent by the BCM to the turn signals is intentionally doubled in speed to indicate an issue. The vehicle can only determine if the issue is for the left or right indicator. It cannot determine if the issue is in the front or rear indicator, so they both must be checked.
Original Description
The left indicator is not functioning as expected and may be flashing faster than normal. If a fault (open, short, over-current..etc) is detected on any of the driven lamp outputs required for signaling (which will be different for each vehicle region), then the frequency of the flashing signal sent by the BCM to the turn signals is intentionally doubled in speed to indicate an issue. The vehicle can only determine if the issue is for the left or right indicator. It cannot determine if the issue is in the front or rear indicator, so they both must be checked.
Severity Notes
BC_w001 is a Warning in the BC system. Schedule service soon. Monitor your vehicle for additional warnings.
Other BC Codes
View all BC codes →Tesla alert codes sourced from the community-maintained Tesla Alerts Dictionary. This information is for educational purposes only. Always consult Tesla Service for official diagnosis and repairs.