VCFRONT-A494
VCFRONT_a494_12VBatteryTempBlockingOTA
Also written as VCFRONT_A494 / VCFRONT A494 / VCFRONT_a494_12VBatteryTempBlockingOTA / vcfront_a494_12vbatterytempblockingota
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 VCFRONT-A494 mean?
Tesla alert code in the Vehicle Controller Front (VCFRONT) module. The 12V Battery is not within an acceptable temperature range to support an OTA update. The temperature of the 12V Battery drops below -20 degrees Celcius for more than 5 consecutive seconds. The temperature of the 12V Battery rises above -20 degrees Celcius for more than 60 consecutive seconds. The vehicle will block OTA updates to prevent power loss during OTA sequence.
Original Description
The 12V Battery is not within an acceptable temperature range to support an OTA update. The temperature of the 12V Battery drops below -20 degrees Celcius for more than 5 consecutive seconds. The temperature of the 12V Battery rises above -20 degrees Celcius for more than 60 consecutive seconds. The vehicle will block OTA updates to prevent power loss during OTA sequence.
Affected Tesla Models
What You May Notice
- Vehicle Controller Front alert: The 12V Battery is not within an acceptable temperature range to support an OTA update. The temperature of the 12V Batte
- 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
VCFRONT-A494 is an Alert in the Vehicle Controller Front system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.