RCM2-A428
RCM2_a428_sideAccelCPilRSigMon
Also written as RCM2_A428 / RCM2 A428 / RCM2_a428_sideAccelCPilRSigMon / rcm2_a428_sideaccelcpilrsigmon
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-A428 mean?
Tesla alert code in the Restraint Control Module v2 (RCM2) module. C-Pillar Right Impact Sensor - Signal Monitor Roll Rate (Wx) - Permanent Sensor Monitoring Initialization The restraint control module does not see communication on the party CAN bus. 1st Row Right Seatbelt Load Limiter - Short to Battery 1st Row Right Seatbelt Load Limiter - Resistance too High
Original Description
C-Pillar Right Impact Sensor - Signal Monitor Roll Rate (Wx) - Permanent Sensor Monitoring Initialization The restraint control module does not see communication on the party CAN bus. 1st Row Right Seatbelt Load Limiter - Short to Battery 1st Row Right Seatbelt Load Limiter - Resistance too High
Affected Tesla Models
What You May Notice
- Restraint Control Module v2 alert: C-Pillar Right Impact Sensor - Signal Monitor Roll Rate (Wx) - Permanent Sensor Monitoring Initialization The restraint
- 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-A428 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.