MyTeslaMate
IDB family

IDB_a026_axImplausible

Not Available

What does the IDB_a026_axImplausible alert mean?

The Restraint Control Module (RCM) longitudinal acceleration signal is implausible.

What you'll see in your Tesla

  • Not Available

What triggers it

IDB determines that the RCM_longitudinalAcceleration signal received via the PARTY Controller Area Network (CAN) bus is implausible.

When it clears

Integrated Dynamic Brake (IDB) determines that the received longitudinal acceleration signal is normal.

Potential impact

Anti-lock Brake System (ABS), Panic Brake Assist (PBA), Hydraulic Fade Compensation (HFC), Controlled Deceleration via Parking brake (CDP), External Brake Request (EBR), and Secondary Collision Mitigation (SCM) may be unavailable. The vehicle should be driven with extreme caution.

Affected models

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.