TSB 22-2253 Clunk/Knock Noise From The Rear Of The Vehicle When Accelerating Or Braking In Forward Or Reverse

[breeves002]

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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​ 0.8 Hrs.​ 2021 Mach-E, Diagnose And Replace Both Rear Upper Trailing Arms (Do Not Use With Any Other Labor Operations) 222253B​ 1.0 Hrs.​ 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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[Tyldum]

I got this on my FE. Even louder than the IPC buzz!

 

[dixiekidd88]

Dealer thinks this could be the issue with ours, however we are past the 36k basic wonder if it is covered under 60k powertrain??? Odo is at 47k right now.... ?‍

 

[BMT1071]

Dealer thinks this could be the issue with ours, however we are past the 36k basic wonder if it is covered under 60k powertrain??? Odo is at 47k right now.... ?‍

It is unlikely that a suspension component will be covered under the powertrain warranty.

 

[dixiekidd88]

It is unlikely that a suspension component will be covered under the powertrain warranty.

I was assuming that. But I wasn't sure what all would be connected to the 'drivetrain' warranty with it being an EV. I have been in the car business for 10+ years and I was always surprised when certain things aren't covered and which things are....?

 

[MachEnation]

Thanks for this. I actually had this happen ONCE on my SR early build. Weirdly, it never came back after I restarted the car. It seemed like the software wasn't calibrated right as it went away when I took it out of 1PD for some reason. I'll have to keep an ear out for it.

 

[Farfapapa]

i got this applied to my car 4 weeks ago, they were able to confirm the diagnostic and did the work.

Problem is, the problem is still there, it's quite obvious. I didn't know of the steps to reproduce, and i agree that these don't cut it for reproducing the problem. Because the dealer couldn't hear it, they can't do anything about this.

However, most times when we back up the car in the morning, it does it. If it's humid, it's worse, it can keep doing it for minutes while driving around.

Anyone else experienced this?

 

[BMT1071]

i got this applied to my car 4 weeks ago, they were able to confirm the diagnostic and did the work.

Problem is, the problem is still there, it's quite obvious. I didn't know of the steps to reproduce, and i agree that these don't cut it for reproducing the problem. Because the dealer couldn't hear it, they can't do anything about this.

However, most times when we back up the car in the morning, it does it. If it's humid, it's worse, it can keep doing it for minutes while driving around.

Anyone else experienced this?

Sounds like you have corrosion build up on your brake rotors.

 

[Farfapapa]

Sounds like you have corrosion build up on your brake rotors. Sponsored

I did a full break maintenance 3 months ago when I took it in and they diagnosed this TSB.. are you sure it could be that?

 

[azerik]

I'll try this tomorrow

 

[leeman]

Yeah my GT does that too especially in the morning

 

[Chadahren]

I have a 21 premium and this noise has been cropping up badly lately. Dealer found the TSB and I have scheduled service - but they said they'll charge me the extended warranty deductible? isn't this something that should be covered by ford's warranty? I'm well within the 80000/2028 limits.

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