RCM2-A048
RCM2_a048_batteryVoltageTooHigh
Also written as RCM2_A048 / RCM2 A048 / RCM2_a048_batteryVoltageTooHigh / rcm2_a048_batteryvoltagetoohigh
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 RCM2-A048 mean?
Tesla alert code in the Restraint Control Module v2 (RCM2) module. Power supply voltage is too high The RCM power supply voltage is too high. The vehicle 12V system issue is corrected. Passenger Front airbag 2nd stage - Resistance too High No Deployment PedPro Calibration Present. Production software is flashed to the restraint control module. Driver Front airbag 2nd stage - Short to Ground 1st Row Right Seatbelt Load Limiter - Resistance too Low The Right Load Limiter may not perform as designed. 0x2E8 EPBR_status - Checksum Error Driver Front airbag 2nd stage - Short to Battery
Original Description
Power supply voltage is too high The RCM power supply voltage is too high. The vehicle 12V system issue is corrected. Passenger Front airbag 2nd stage - Resistance too High No Deployment PedPro Calibration Present. Production software is flashed to the restraint control module. Driver Front airbag 2nd stage - Short to Ground 1st Row Right Seatbelt Load Limiter - Resistance too Low The Right Load Limiter may not perform as designed. 0x2E8 EPBR_status - Checksum Error Driver Front airbag 2nd stage - Short to Battery
Affected Tesla Models
What You May Notice
- Restraint Control Module v2 alert: Power supply voltage is too high The RCM power supply voltage is too high. The vehicle 12V system issue is corrected. Pa
- Seatbelt pre-tensioner or side airbag may be affected
- SRS (Supplemental Restraint System) alert in vehicle diagnostics
How to Diagnose and Resolve
- 1 Do not ignore this alert — airbag system faults are safety-critical
- 2 Reboot the vehicle to check if the alert clears
- 3 Schedule a Tesla Service appointment promptly
- 4 The RCM module and wiring harness will be inspected
Severity Notes
RCM2-A048 is an Alert in the Restraint Control Module v2 system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.