RCM2 family
RCM2_a358_upFrntSnsrLSigMon
Safety restraint system issue - Service required
What does the RCM2_a358_upFrntSnsrLSigMon alert mean?
Up-Front Left Impact Sensor (Shotgun) - Signal Monitor
What you'll see in your Tesla
- Safety restraint system issue - Service required
- Event data recording may be limited
What triggers it
There is an issue with the front-left impact sensor.
When it clears
The issue is rectified.
Potential impact
The Safety Restraint System may not perform as designed.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Track your Tesla's alerts automatically
Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.