VCLEFT_a566_leftFrontTurnLightFault
Left front turn signal malfunction detected
What does the VCLEFT_a566_leftFrontTurnLightFault alert mean?
A condition affecting left front turn signal functionality has been detected - the left front turn signal may be degraded or disabled, and remaining left side turn signals will fast blink
What you'll see in your Tesla
- Left front turn signal malfunction detected
- Inspect light function - Schedule service if needed
What triggers it
The headlamp ECU is MIA on LIN (not responding to Local Interconnect Network traffic) while powered on, or an internal condition with the turn signal LEDs or the headlamp ECU's LED driver is detected.
When it clears
Clears when the headlamp is powered off or reset (example: sleep, FW update, or manual power cycle). Note: If the condition persists, the alert will continue to set each time the headlamp is powered back on / turn signal is used, until the underlying condition is resolved.
Potential impact
Left side turn signals will fast blink
Affected models
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Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.