2024 Jeep Wrangler Rear Axle Noise TSB 03-009-24

Symptoms

Owners of affected 2024 Jeep Wrangler vehicles may notice an intermittent grinding, screeching, or rubbing noise. This noise typically originates from the right-hand side of the vehicle's rear axle. This Jeep Wrangler rear axle noise indicates a potential issue with the axle's lubrication.

Cause

The root cause of the Jeep Wrangler rear axle noise described in TSB 03-009-24 is a lack of lubrication. Specifically, the axle shaft and hub splines may not have adequate lubrication, leading to friction and noise during operation.

Diagnosis

To determine if your 2024 Jeep Wrangler is affected by this condition, a technician will first check the vehicle's VIN against the Rapid Service Update (RSU) 24-136 list or use the VIP system. If the VIN is not on the list, but the vehicle exhibits the described intermittent grinding, screeching, or rubbing noise from the rear axle, the repair procedure should still be performed.

Repair Procedure Summary

Technical Service Bulletin (TSB) 03-009-24 outlines a procedure to resolve the Jeep Wrangler rear axle noise by cleaning and lubricating the axle shaft and hub splines. The process involves several key steps:

1. The rear axle shaft is removed from the vehicle.
2. The hub is carefully extracted from the tube assembly using a pry bar.
3. The axle shaft, hub, and bearing assembly, along with the backing plate, are removed from the axle housing.
4. The O-ring is inspected for any damage and replaced if necessary.
5. The axle shaft is separated from the hub.
6. Both the axle shaft splines and hub splines are thoroughly cleaned using brake cleaner and a wire brush to remove any fretting or corrosion. Forced air is then used to ensure all debris is removed.
7. Wheel bearing grease is applied to lubricate both the hub splines and the axle shaft splines, ensuring full coverage of the spline interface.
8. The axle shaft is reinstalled into the hub by hand until it bottoms out.
9. The tube flange's inside diameter is lubricated with 75-85W sump lube to assist with O-ring guidance.
10. Finally, the rear axle shaft is reinstalled using four new hex flange lock nuts.

Important Warnings

• Technicians should inspect the O-ring for damage during the repair process and replace it if needed.
• After cleaning the splines, forced air must be used to remove any remaining debris from the interface.
• Air may purge through the shaft splines at any time during the shaft installation process.

Required Parts

To perform the repair outlined in TSB 03-009-24, the following parts may be required:

• Mopar® Wheel Bearing Grease: Part Number 05083150AA (or equivalent NPN grease, not to exceed $5.00 USD if Mopar grease is not used). One (1) tube is typically sufficient.
• Hex Flange Lock Nut: Part Number 68003275AA. Four (4) are needed for the tube flange to hub unit.
• O-Ring: Part Number 68651258AA. One (1) is needed for the wheel hub bearing.

Owner Action

If your 2024 Jeep Wrangler is experiencing an intermittent grinding, screeching, or rubbing noise from the right rear axle, it is recommended to schedule an appointment with your authorized Jeep dealer. The repair, which involves cleaning and lubricating the axle shaft and hub splines, is reimbursable within the provisions of your vehicle's warranty. The labor time for this service is approximately 0.8 hours.

NHTSA ID: 11008218