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NHTSA ID Number: 10216835
Manufacturer Communication Number: TSB 22-2253
Summary
Some 2021 Mustang
Mach-E vehicles built on or before 05-Oct-2021 may exhibit a clunk/knock noise from the rear of the vehicle when accelerating or braking in forward or reverse. This may be due to one of the rear upper trailing arm bushing blades contacting the inner core during high load. To correct the condition, follow the Service Procedure to replace the rear upper trailing arm.
Model:
2021 Mustang Mach-E
Built on or before 05-Oct-2021
Issue: Some 2021 Mustang Mach-E vehicles built on or before 05-Oct-2021 may exhibit a clunk/knock noise from the rear of the vehicle when accelerating or braking in forward or reverse. This may be due to one of the rear upper trailing arm bushing blades contacting the inner core during high load. To correct the condition, follow the Service Procedure to replace the rear upper trailing arm.
Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria:
- 2021 Mustang Mach-E
- Built on or before 05-Oct-2021
- Clunk/knock noise from the rear of the vehicle when accelerating or braking in forward or reverse
Parts
| Service Part Number | Quantity | Description | Unit of Issue | Piece Quantity |
| LJ9Z-5500-C | 1 | Rear Upper Trailing Arm (Right) | 1 | 1 |
| LJ9Z-5500-D | 1 | Rear Upper Trailing Arm (Left) | 1 | 1 |
| W7218230-S439 | 1 | Upper Trailing Arm-to-Frame Bolt | 4 | 2 |
| W500564-S439 | 1 | Upper Trailing Arm-to-Wheel Knuckle Bolt | 4 | 1 |
W520215-S440  | 1 | Upper Trailing Arm-to-Wheel Knuckle Nut | 4 | 1 |
Quantity refers to the amount of the service part number required to repair the vehicle.
Unit of Issue refers to the number of individual pieces included in a service part number package.
Piece Quantity refers to the total number of individual pieces required to repair the vehicle.
Service Procedure
- Place the vehicle in drive (D), apply and hold the brake pedal firmly, briefly push the accelerator pedal simultaneously.
- Can the clunk from the rear upper trailing arm be duplicated?
(1). Yes – proceed to Step 3.
(2). No – this article does not apply. Refer to Workshop Manual (WSM), Section 100-04 for further diagnostics.
- Replace the affected rear upper trailing arm. Refer to WSM, Section 204-02.
1 Affected Product
Vehicle
1 Associated Document
Manufacturer Communications
22-2253
28 July 2022
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- WHEEL BEARING PULLER SET: This wheel bearing tool kit by Orion Motor Tech provides everything you need to let you quickly and easily remove and install your wheel bearings without hammering and front-end alignment, Please lubricate the rod to protect the threads
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- DURABLE CONSTRUCTION: Made of premium stainless steel, this wheel bearing removal tool set provides strong and dependable long-lasting service; the sliding screws are heat treated and blackened for superior strength and corrosion resistance.
- FULL SET: This wheel bearing tool kit by Jack Boss provides everything you need to let you quickly and easily remove and install your wheel bearings without hammering and front-end alignment.
- UNIVERSAL COMPATIBILITY: Offers multiple sleeves and bushings in most common sizes to work with nearly any front wheel drive automobile or light truck, whether foreign or domestic.
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- QUICK & EASY OPERATION: Sliding screws with precision threading firmly hold your bearings and let you smoothly pop them out without damage, leaving the steering knuckle and strut assembly untouched.
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- PROTECTIVE CARRYING CASE: Includes a heavy-duty, blow-molded case with precision-sized compartments for every piece - great for storage and transport while lengthening the life of the tool set.
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- GREAT FUNCTION: Our comprehensive custom bushing bearing & seal driver set includes all the necessary tools for quick and efficient removal and installation of wheel bearings in your cars or trucks. With our range of multi-size bushing discs and long handle shaft, replacing wheel bearings has never been easier or more convenient.
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- BUILT TO LAST: Constructed of heavy-duty steel, the front wheel bearing puller set is designed for strength and durability; Each bushing removal tool features black oxide finish to resist rust and corrosion; Heavy-duty 10.1 x 6.8 x 2.4-inch (25.7 x 17.3 x 6.1 cm) plastic blow-molded carrying case for easy transportation, safe storage, and quick organization; Each piece in this set is permanently marked with sizing and corresponds to labeled carrying case compartments for fast identification
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SEOCONTENT-START
TECHNICAL SERVICE BULLETIN Clunk/Knock Noise From The Rear Of The Vehicle When Accelerating Or Braking In Forward Or Reverse – Built On Or Before 05-Oct-2021 22-2253 28 July 2022 Model: Ford 2021 Mustang Mach-E Built on or before 05-Oct-2021 Issue: Some 2021 Mustang Mach-E vehicles built on or before 05-Oct-2021 may exhibit a clunk/knock noise from the rear of the vehicle when accelerating or braking in forward or reverse. This may be due to one of the rear upper trailing arm bushing blades contacting the inner core during high load. To correct the condition, follow the Service Procedure to replace the rear upper trailing arm. Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria: • 2021 Mustang Mach-E • Built on or before 05-Oct-2021 • Clunk/knock noise from the rear of the vehicle when accelerating or braking in forward or reverse Parts Service Part Number Quantity Description Unit of Issue Piece Quantity LJ9Z-5500-C 1 Rear Upper Trailing Arm (Right) 1 1 LJ9Z-5500-D 1 Rear Upper Trailing Arm (Left) 1 1 W7218230-S439 1 Upper Trailing Arm-to-Frame Bolt 4 2 W500564-S439 1 Upper Trailing Arm-to-Wheel Knuckle Bolt 4 1 W520215-S440 1 Upper Trailing Arm-to-Wheel Knuckle Nut 4 1 Quantity refers to the amount of the service part number required to repair the vehicle. Unit of Issue refers to the number of individual pieces included in a service part number package. Piece Quantity refers to the total number of individual pieces required to repair the vehicle. Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty(SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are not altered by a TSB. NVLW/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool. Labor Times Description Operation No. Time 2021 Mach-E, Diagnose And Replace One Rear Upper Trailing Arm (Do Not Use With Any Other Labor Operations) 222253A 0.8Hrs. 2021 Mach-E, Diagnose And Replace Both Rear Upper Trailing Arms (Do Not Use With Any Other Labor Operations) 222253B 1.0Hrs. Repair/Claim Coding Causal Part: 5500 Condition Code: 42 Service Procedure 1. Place the vehicle in drive (D), apply and hold the brake pedal firmly, briefly push the accelerator pedal simultaneously. 2. Can the clunk from the rear upper trailing arm be duplicated? (1). Yes – proceed to Step 3. (2). No – this article does not apply. Refer to Workshop Manual (WSM), Section 100-04 for further diagnostics. 3. Replace the affected rear upper trailing arm. Refer to WSM, Section 204-02.
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SEOCONTENT-END
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