Service Bulletin

2021-2022 Tesla Model 3 Braking and Stability Control Alerts

Some 2021-2022 Tesla Model 3 vehicles equipped with a heat pump may display "braking and stability control related alerts" on the instrument cluster and touchscreen. This issue, identified by NHTSA ID 10234999, is linked to a missing hydraulic control unit (HCU) wake-up wire and can often be…

Byeditor david chen2021 Tesla Model 3
2021 TESLA Model 3 — Tesla Model 3 braking alerts
Editorial illustration generated for this article.
Tesla Model 3 braking alertsTesla Model 3 stability control alertsTesla Model 3 HCU wake-up wireTesla Model 3 braking malfunctionTesla Model 3 stability control malfunctionTesla Model 3 instrument cluster alertsTesla Model 3 touchscreen alertsTesla Model 3 power cycle fixNHTSA ID 10234999Heat Pump Model 3 braking
Tesla Model 3
2022

Owners of certain 2021-2022 Tesla Model 3 vehicles equipped with a heat pump may encounter unexpected "braking and stability control related alerts" appearing on their instrument cluster and touchscreen. This issue, documented under NHTSA ID 10234999, indicates a potential problem with the vehicle's braking and stability systems. These Tesla Model 3 braking alerts can be concerning, but a temporary solution is available.

Symptoms

Owners may observe the following symptoms:

  • "Braking and stability control related alerts" displayed on the vehicle's instrument cluster.
  • "Braking and stability control related alerts" appearing on the touchscreen.
  • These alerts typically occur during the vehicle power-on process.

Diagnosis / Trigger Conditions

The root cause of these Tesla Model 3 braking alerts is identified as some Heat Pump Model 3 vehicles being built without a hydraulic control unit (HCU) wake-up wire. This omission can, in rare circumstances, lead to the braking and stability control systems not initializing correctly when the vehicle powers on.

Important Warnings

If you experience these alerts, it's important to know that the manufacturer communication states that such faults can typically be corrected and the affected functionality restored with a vehicle power cycle. This suggests a temporary fix that owners can perform.

Repair Procedure Summary

While a permanent fix for the missing HCU wake-up wire is implied to be necessary, the immediate, temporary solution for these alerts is to perform a vehicle power cycle. This action can often clear the "braking and stability control related alerts" and restore normal braking and stability control functionality. For a permanent resolution, it is recommended to contact Tesla service.

Owner Action

If your 2021-2022 Tesla Model 3 displays "braking and stability control related alerts", first attempt a vehicle power cycle to see if the functionality is restored. If the issue persists or recurs, it is advisable to contact Tesla service to schedule an inspection and potential repair related to the missing HCU wake-up wire, referencing manufacturer communication NHTSA ID 10234999.


Source: NHTSA ID 10234999

Frequently Asked Questions

What causes the 'braking and stability control related alerts' in my Tesla Model 3?
These alerts in certain 2021-2022 Tesla Model 3 vehicles are caused by a missing hydraulic control unit (HCU) wake-up wire, which can prevent the braking and stability systems from initializing correctly during vehicle power-on.
How can I temporarily fix the Tesla Model 3 braking alerts?
You can typically resolve the 'braking and stability control related alerts' by performing a vehicle power cycle. This action often restores the affected functionality.
Which Tesla Model 3 vehicles are affected by this issue?
This issue primarily affects some 2021-2022 Tesla Model 3 vehicles equipped with a heat pump, as detailed in NHTSA ID 10234999.
Should I be concerned about the 'braking and stability control related alerts'?
While the alerts can be temporarily cleared with a power cycle, they indicate an underlying hardware issue (missing HCU wake-up wire). It's recommended to contact Tesla service for a permanent solution to ensure long-term safety and functionality.

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