2023-2024 Tesla Model 3/Y High Voltage Controller Issue

Symptoms

Owners of certain 2023-2024 Tesla Model 3 and Model Y vehicles may experience issues related to a defective electrical component within the High Voltage Controller. This defect can manifest in two primary ways: the vehicle may be "prevented from entering into drive mode", or it might experience a "graceful power-off" while in operation. If you notice your Tesla Model 3 High Voltage Controller causing these symptoms, it indicates a potential issue with the high voltage system.

Important Warnings

Tesla Service Bulletin SB-24-16-005 explicitly states that this condition is considered non-safety-related. While it impacts vehicle operation by preventing entry into drive mode or causing a graceful power-off, it does not pose an immediate safety risk. A critical instruction for service centers is that if this bulletin applies to a vehicle, the correction—which involves replacing the High Voltage Controller—must be performed without any prior inspection. This means technicians should proceed directly with the repair if the vehicle falls within the affected range, streamlining the service process.

Repair Procedure Summary

The core of the correction outlined in Service Bulletin SB-24-16-005 is the replacement of the defective High Voltage Controller. Tesla technicians are directed to follow specific, detailed procedures from the Service Manual to ensure the repair is performed correctly and safely. For 2017-2023 Model 3 and Model Y vehicles, the relevant procedure is 16301603. For 2024+ Model 3 vehicles, technicians will use procedure 1630010182. These procedures guide technicians through the necessary steps, which typically include safely de-energizing the high-voltage system, carefully removing the existing High Voltage Controller, installing the new component (part number 1106394-21-P), and reassembling the vehicle. The bulletin also specifies internal correction codes for tracking purposes: S012416005, which has a labor time of 0.00 hours, and S022416005, which is associated with the actual replacement work. The labor time for S022416005 is approximately 1.38 hours for Model Y and 2017-2023 Model 3 vehicles, and 1.08 hours for 2024+ Model 3 vehicles.

Required Tools or Parts

To perform the High Voltage Controller replacement, the following parts and supplies are required:

• Parts Required:
  • 1106394-21-P: HIGH VOLTAGE SYSTEM CONTROLLER (Quantity: 1)
  • 1508009-00-A: BOLT,TE,M6-1.0X14,[88],G1009,CA. (Quantity: 3-5)
• Shop Supplies:
  • 1089974-00-A: Electrical Joint Compound, A-13,8oz

These part numbers were current at the time the bulletin was published. Technicians should always verify the latest revisions in the Parts Catalog to ensure correct parts are used.

Owner Action

If you own a 2023-2024 Tesla Model 3 or Model Y and are experiencing the described symptoms related to the Tesla Model 3 High Voltage Controller, you should contact your local Tesla Service Center. Reference Service Bulletin SB-24-16-005 when scheduling your appointment. The estimated time for this repair is approximately 1.38 hours for Model Y and 2017-2023 Model 3 vehicles, and 1.08 hours for 2024+ Model 3 vehicles. This service is typically covered under warranty as it is a campaign bulletin addressing a known manufacturing condition.

Source: NHTSA ID 11008820