VCLEFT-A312
VCLEFT_a312_leftTailLightFault
Also written as VCLEFT_A312 / VCLEFT A312 / VCLEFT_a312_leftTailLightFault / vcleft_a312_lefttaillightfault
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-A312 mean?
Tesla alert code in the Vehicle Controller Left (VCLEFT) module. A fault has been detected with the left body-side tail light. The light is plugged in, draws current when on, and its efuse is not tripped. The left body-side tail light may not be working. Electronic Parking Brake Monitor measured more current than is required for Electronic Parking Brake to remain in DYNAMIC_APPLYING. FL ride height sensor detected shorted or otherwise faulty. n/a to North American or Air Suspension eqiupped vehicles. FL ride height sensor input pin shorted; input signal frequency above 840 Hz or below 760 Hz; input duty cycle above 87.5% or below 12.5%; input duty cycle changing too quickly (3300% / sec) Proper connection of a working FL ride height sensor. Electronic Parking Brake Monitor's and Electronic Parking Brake's state have been mismatched for too long a time.
Original Description
A fault has been detected with the left body-side tail light. The light is plugged in, draws current when on, and its efuse is not tripped. The left body-side tail light may not be working. Electronic Parking Brake Monitor measured more current than is required for Electronic Parking Brake to remain in DYNAMIC_APPLYING. FL ride height sensor detected shorted or otherwise faulty. n/a to North American or Air Suspension eqiupped vehicles. FL ride height sensor input pin shorted; input signal frequency above 840 Hz or below 760 Hz; input duty cycle above 87.5% or below 12.5%; input duty cycle changing too quickly (3300% / sec) Proper connection of a working FL ride height sensor. Electronic Parking Brake Monitor's and Electronic Parking Brake's state have been mismatched for too long a time.
Affected Tesla Models
What You May Notice
- Vehicle Controller Left alert: A fault has been detected with the left body-side tail light. The light is plugged in, draws current when on, and its ef
- 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-A312 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.