ESP family
ESP_a121_regenTcActive
Not Available
What does the ESP_a121_regenTcActive alert mean?
Regenerative Traction Control is active. The Electronic Stability Program (ESP) may try to prevent wheel slips under regenerative braking.
What you'll see in your Tesla
- Not Available
What triggers it
Regenerative Traction Control is active.
When it clears
Regenerative Traction Control is no longer active.
Potential impact
No expected impact on vehicle functionality. The vehicle should be driven with caution due to the road conditions.
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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