VCFRONT-A349
VCFRONT_a349_vbatFusedFastTripSlope
Also written as VCFRONT_A349 / VCFRONT A349 / VCFRONT_a349_vbatFusedFastTripSlope / vcfront_a349_vbatfusedfasttripslope
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-A349 mean?
Tesla alert code in the Vehicle Controller Front (VCFRONT) module. The front vehicle controller fused high current circuit eFuse reported a current slope > 120A/ms. The MCU Audio eFuse was retried because it false tripped due to inrush. There is a >3% difference between VBAT_MONITORS's reported voltage and the AS8510 chip's reported voltage. There is >3% difference between VBAT_MONITORS's reported voltage and the AS8510 chip's reported voltage. There is <3% difference between VBAT_MONITORS's reported voltage and the AS8510 chip's reported voltage. Improper treatment of the 12V battery, vehicle LV bus voltage could be higher or lower than is desired.
Original Description
The front vehicle controller fused high current circuit eFuse reported a current slope > 120A/ms. The MCU Audio eFuse was retried because it false tripped due to inrush. There is a >3% difference between VBAT_MONITORS's reported voltage and the AS8510 chip's reported voltage. There is >3% difference between VBAT_MONITORS's reported voltage and the AS8510 chip's reported voltage. There is <3% difference between VBAT_MONITORS's reported voltage and the AS8510 chip's reported voltage. Improper treatment of the 12V battery, vehicle LV bus voltage could be higher or lower than is desired.
Affected Tesla Models
What You May Notice
- Vehicle Controller Front alert: The front vehicle controller fused high current circuit eFuse reported a current slope > 120A/ms. The MCU Audio eFuse wa
- 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-A349 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.