MyTeslaMate
RCM2 family

RCM2_a391_sideAccelBPilLSht2Bat

Safety restraint system issue - Service required

What does the RCM2_a391_sideAccelBPilLSht2Bat alert mean?

B-Pillar Left Impact Sensor - Short to Battery

What you'll see in your Tesla

  • Safety restraint system issue - Service required
  • Event data recording may be limited

What triggers it

There is a short to battery with the left B-Pillar impact sensor.

When it clears

The short to battery 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.