2024 Tesla Cybertruck RDU Oil Fill Plug Torque TSB

Why This Matters

Tesla has released Service Bulletin SB-24-40-004 to address a potential manufacturing issue with the 2024 Cybertruck's Rear Drive Unit (RDU) oil fill plug. If the plug is not torqued to the correct specification, it could lead to oil loss from the RDU. While classified as a non-safety-related condition, maintaining proper fluid levels in the RDU is crucial for its long-term performance and durability.

Symptoms

Owners of affected 2024 Tesla Cybertruck vehicles might observe signs of oil loss around the Rear Drive Unit. This could manifest as minor indications like a dried oil trail, an oily sheen, or a slightly soaked aero shield. In more significant cases, moderate oil loss might be visible as large wet trails on the drive unit casing or a heavily soaked aero shield. These visual cues are key indicators that the Tesla Cybertruck RDU oil fill plug may not be properly sealed.

Diagnosis / Trigger Conditions

Diagnosis involves a visual inspection of the area surrounding the Rear Drive Unit (RDU) oil fill plug. Technicians will look for any evidence of oil loss. If only minor oil loss is detected, such as a dried trail or sheen without the aero shield being soaked, an RDU oil top-off procedure is generally not required, and the technician can proceed directly to torquing the plug. However, if moderate oil loss is observed, indicated by a soaked aero shield or large wet trails on the drive unit case, an RDU oil top-off procedure (Service Manual procedure 40300105) must be performed before the fill plug is torqued.

Repair Procedure Summary

The correction for the Tesla Cybertruck RDU oil fill plug involves a straightforward procedure to ensure the plug is torqued to specification. First, technicians must remove both the mid and rear aero shields to gain access to the Rear Drive Unit. After inspecting for oil loss and performing an RDU oil top-off if necessary, specialized tools are assembled. The RDU oil fill plug is then torqued to a setting of 11 Nm on the wrench, which results in a final torque value of 15 Nm when using the specified tools. Finally, both the rear and mid aero shields are reinstalled.

Required Tools or Parts

To perform this service bulletin, specific tools are required to ensure the correct torque is applied to the Tesla Cybertruck RDU oil fill plug. These include:

• 1076971-02-A: TORQUE WRENCH 1/4in DR. + ANGLE
• 1450424-00-A: SET, 1/2" CUT BIT. (78 PCS DOUBLE END MINI RATCHET)
• 1115137-00-A: SKT, 1/4" DR, HEX BIT, METRIC, 6MM

Important Warnings

Owners and technicians should be aware of the following critical information:

• CAUTION: When performing the fill drain procedure, ensure the RDU fill plug is torqued to the required 15 Nm.
• CAUTION: Only use the listed tools to torque the fill plug. Using tools not listed in the tools list may result in an inaccurate final torque value.
• NOTE: If this bulletin is applicable to the vehicle, the correction should be performed without any need for prior inspection, unless moderate oil loss is already observed.
• NOTE: Setting the torque wrench to 11 Nm with the listed tools will result in a final torque value of 15 Nm for the RDU oil fill plug.

Owner Action

If you own a 2024 Tesla Cybertruck, especially one manufactured at Giga Texas, it is recommended to contact a Tesla service center to determine if your vehicle is affected by Service Bulletin SB-24-40-004. Since this is a campaign bulletin addressing a non-safety-related condition, the repair will likely be covered under warranty. Tesla service technicians will perform the necessary inspection and torque the Tesla Cybertruck RDU oil fill plug to specification, or perform an oil top-off if required.

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Source: NHTSA ID 11009778