VCLEFT-A163
VCLEFT_a163_windowEncoderStallR
Also written as VCLEFT_A163 / VCLEFT A163 / VCLEFT_a163_windowEncoderStallR / vcleft_a163_windowencoderstallr
Why does the exact Tesla alert ID matter?
Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.
What does VCLEFT-A163 mean?
Tesla alert code in the Vehicle Controller Left (VCLEFT) module. Window encoder ticks not seen while the rear window motor is being driven: This suggests something is disconnected, shorted, or the controller voltage supply for the encoders is < 9V Window motor is being driven and no encoder feedback is seen within 500 ms Window motor is successfully driven and encoder feedback is seen Window motor is possibly disconnected or shorted Battery Backed Siren not detected on LIN bus Ensure the Battery Backed Siren is connected properly Horn will sound instead of siren during an alarm event
Original Description
Window encoder ticks not seen while the rear window motor is being driven: This suggests something is disconnected, shorted, or the controller voltage supply for the encoders is < 9V Window motor is being driven and no encoder feedback is seen within 500 ms Window motor is successfully driven and encoder feedback is seen Window motor is possibly disconnected or shorted Battery Backed Siren not detected on LIN bus Ensure the Battery Backed Siren is connected properly Horn will sound instead of siren during an alarm event
Affected Tesla Models
What You May Notice
- Vehicle Controller Left alert: Window encoder ticks not seen while the rear window motor is being driven: This suggests something is disconnected, shor
- Some features (climate, lights, or charging) may be temporarily unavailable
- Alert notification in the Tesla app
How to Diagnose and Resolve
- 1 Perform a soft reboot (hold both scroll wheels)
- 2 Check for pending OTA software updates in Controls > Software
- 3 If multiple features remain non-functional, schedule a service appointment
Severity Notes
VCLEFT-A163 is an Alert in the Vehicle Controller Left system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.