MyTeslaMate
DI family

DI_a203_TCReducedByADD

Traction control reduced

What does the DI_a203_TCReducedByADD alert mean?

The drive interface (DI) electronic control unit (ECU) detects that active driveline damping (ADD) control is degrading and is affecting traction control (TC).

What you'll see in your Tesla

  • Traction control reduced
  • Proceed with caution

What triggers it

The DI ECU detects a condition affecting ADD, which reduces the functionality and performance of TC. Check for other DI alerts that point to the specific cause of the condition.

When it clears

The DI ECU detects that the ADD control is performing as expected and all other traction control input signals have become available.

Potential impact

TC performance may be degraded.

Affected models

Cybertruck Model 3 2017-2023 Model 3 2024+ Model S 2021+ Model X 2021+ Model Y Model Y 2025+ Semitruck

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.