RCM2-A420
RCM2_a420_sideAccelCPilRSht2Gnd
Also written as RCM2_A420 / RCM2 A420 / RCM2_a420_sideAccelCPilRSht2Gnd / rcm2_a420_sideaccelcpilrsht2gnd
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-A420 mean?
Tesla alert code in the Restraint Control Module v2 (RCM2) module. C-Pillar Right Impact Sensor - Short to Ground Low g Vertical (Az-Lg) - Temporary Channel Monitoring
Original Description
C-Pillar Right Impact Sensor - Short to Ground Low g Vertical (Az-Lg) - Temporary Channel Monitoring
Affected Tesla Models
What You May Notice
- Restraint Control Module v2 alert: C-Pillar Right Impact Sensor - Short to Ground Low g Vertical (Az-Lg) - Temporary Channel Monitoring
- 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-A420 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.