MyTeslaMate
TAS family

TAS_a296_chassisTypeMismatch

Software update required

What does the TAS_a296_chassisTypeMismatch alert mean?

The chassis type configuration value reported by the vehicle gateway (GTW) does not match the chassis type type supported by the firmware version running on the Tesla Air Suspension (TAS) electronic control unit (ECU).

What you'll see in your Tesla

  • Software update required
  • Schedule service

What triggers it

The TAS ECU detects a mismatch between the chassis type supported by its firmware and the chassis type reported by the GTW.

When it clears

The chassis type reported by the GTW matches the chassis type supported by the TAS ECU firmware

Potential impact

Adaptive damping controls are unavailable. All dampers receive a fixed mid-level current instead.

Affected models

Cybertruck Model 3 2024+ Model S 2012-2020 Model S 2021+ Model X 2015-2020 Model X 2021+ 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.