RCM2 family
RCM2_a148_curABLeftOpen
Safety restraint system issue
What does the RCM2_a148_curABLeftOpen alert mean?
Left Curtain Airbag - Resistance too High
What you'll see in your Tesla
- Safety restraint system issue
- Service is required
What triggers it
There is a high resistance with the left curtain airbag.
When it clears
The high resistance is rectified.
Potential impact
The Left Curtain Airbag 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+
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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.