DI family
DI_a143_mcuLimitActive
Acceleration and top speed reduced
What does the DI_a143_mcuLimitActive alert mean?
The media control unit (MCU) is limiting the top speed and power of the drive unit(s).
What you'll see in your Tesla
- Acceleration and top speed reduced
- Performance may be restored on next drive
What triggers it
The media control unit (MCU) is limiting the top speed and power of the drive unit(s).
When it clears
The MCU is no longer limiting drive unit speed and power.
Potential impact
Torque and top speed are reduced.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Semitruck
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