RCU family
RCU_a009_brakeFluidLow
Not Available
What does the RCU_a009_brakeFluidLow alert mean?
The Redundant Control Unit (RCU) received a low BB_brakeFluidLevel.
What you'll see in your Tesla
- Not Available
What triggers it
The RCU receives the BB_brakeFluidLevel Controller Area Network (CAN) signal as BRAKE_FLUID_LEVEL_LOW for 5 seconds.
When it clears
The RCU receives the BB_brakeFluidLevel Controller Area Network (CAN) signal as BRAKE_FLUID_LEVEL_NORMAL for 5 seconds.
Potential impact
There may be low brake fluid.
Affected models
Model Y 2025+
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