Safety Recall 23S11 Rear Axle Caliper Bolt Torque Inspection – 2022 Ford F-53 & F-59

March 10, 2023 NHTSA CAMPAIGN NUMBER: 23V164000

Rear Caliper Bolts Not Tightened Correctly

A damaged wheel can result in a loss of tire pressure. A damaged brake line can cause a brake fluid leak and reduce brake performance. Either condition increases the risk of a crash.


NHTSA Campaign Number: 23V164

Manufacturer Ford Motor Company


Potential Number of Units Affected 644



Ford Motor Company (Ford) is recalling certain 2022 F-53 and F-59 vehicles. The rear brake caliper attachment bolts may not be tightened correctly, which can allow the caliper to loosen and possibly damage the wheel or brake lines.



Dealers will inspect and tighten the rear caliper bolts, as necessary, free of charge. In addition, any damaged bolts will be replaced, free of charge. Owner notification letters were mailed March 27, 2023. Owners may contact Ford customer service at 1-866-436-7332. Ford’s number for this recall is 23S11.



Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to


Check if your Vehicle has a Recall


March 13, 2023

Safety Recall 23S11
Certain 2022 Model Year Stripped Chassis Vehicles
Rear Axle Caliper Bolt Torque Inspection



Vehicle Model Year Assembly Plant Build Dates
Stripped Chassis 2022 Detroit Chassis October 24, 2022 through November 29, 2022

Affected vehicles are identified in OASIS and FSA VIN Lists.

Note: Some vehicles may be in the process of being repaired at the plant. Monitor OASIS before opening an RO and/or beginning a repair. Parts purchased for an FSA can be returned for credit, if required. See the EXCESS STOCK RETURN details in Attachment II for more information.



In some of the affected vehicles, the rear axle caliper bolts may be loose. This may result in a noise / bang / clunk from the rear axle if any of the caliper bolts start working loose. The caliper bolts may loosen over time. If one or more bolts disengage, the caliper may damage the wheel resulting in a loss of tire pressure or the caliper may damage the brake lines causing brake fluid loss in one circuit, which may result in reduced brake system performance. Either condition increases the risk of a crash.



Before demonstrating or delivering any new in-stock vehicles involved in this recall, dealers are to check the torque on the four rear brake caliper bolts and if below nominal 135Nm, retorque to specification. If a bolt head is rounded, replace as necessary. This service must be performed on all affected vehicles at no charge to the vehicle owner.



Owner letters are expected to be mailed the week of March 27, 2023. Dealers should repair any affected vehicles that arrive at their dealerships, whether or not the customer has received a letter.


Federal law requires dealers to complete this recall service before a new vehicle is delivered to the buyer or lessee. Violation of this requirement by a dealer could result in a civil penalty of up to $26,315 per vehicle. Correct all vehicles in your new vehicle inventory before delivery. 



  • Ford has not issued instructions to stop selling/delivering or driving used vehicles under this safety recall. Owners should contact their dealers for an appointment to have their vehicles remedied as soon as practicable.
  • Immediately contact any of your affected customers whose vehicles are not on your VIN list but are identified in OASIS. Give the customer a copy of the Owner Notification Letter (when available) and schedule a service date.
  • Correct other affected vehicles identified in OASIS which are brought to your dealership.
  • Dealers are to prioritize repairs of customer vehicles over repairs of new and used vehicle inventory.



  • Correct all affected units in your new vehicle inventory before delivery.
  • Use OASIS to identify any affected vehicles in your used vehicle inventory.



The Fixing America’s Surface Transportation (FAST) Act law effective June 2016 prohibits a rental company from selling, renting, or leasing vehicles subject to a safety or compliance recall. Please consult your legal counsel for legal advice.



Affected title-branded and salvaged vehicles are eligible for this recall.



  • This safety recall must still be performed, even if the owner has paid for a previous repair. Claiming a refund will not close the recall on the vehicle.
  • Ford Motor Company is offering a refund for owner-paid repairs covered by this recall if the repair was performed before the date indicated in the reimbursement plan, which is posted with this bulletin. Owners are directed to seek reimbursement through authorized dealers or, at their option, directly through Ford Motor Company at P.O. Box 6251, Dearborn, MI 481216251.
  • Dealers are also pre-approved to refund owner-paid emergency repairs that were performed away from an authorized servicing dealer after the end date specified in the reimbursement plan. Non-covered repairs, or those judged by Ford to be excessive, will not be reimbursed.
  • Refunds will only be provided for the cost associated with a loose rear axle caliper bolt.



Rental vehicles are not approved for this program.


All customers affected by this program have the option of complimentary Vehicle Pick-up & Delivery service (at participating dealers) in lieu of a rental vehicle. Refer to EFC12071, 2023 Remote Experience Program, Pickup & Delivery (PDL) Offset section for additional details.



Part Number  Description Order Quantity
8U9Z- 2W303-A Rear Axle Caliper Bolt

(package of 2, only replace if rounded)

Only if damaged





1. Position the vehicle on a hoist. Please follow the Workshop Manual (WSM) procedures in Section 100-02.

2. Check the torque on all four (4) rear caliper bolts to specification. See Figure 1.

  • Torque: 100 lb. ft (136 Nm).

NOTE: Bolts should only be replaced if the bolt is missing or the bolt head is rounded.


3. Lower the vehicle. Please follow the WSM procedures in Section 100-02.


Chronology :

December 2022
On December 1, 2022, Ford’s Critical Concern Review Group (CCRG) initiated an investigation into reports of rear axle brake caliper bolts with low torque on certain 2022 model year F-53 and F-59 vehicles. During a daily torque audit on November 29, 2022, assembly plant personnel found a vehicle with rear axle caliper bolt torque below specification. Review by assembly plant quality personnel found that the socket used to secure the caliper bolts was worn, resulting in reduced ability to apply the proper torque to the bolt.

In December 2022, Ford initiated an inspection of F-53 and F-59 units at the vehicle assembly facility and upfitter facilities and found additional units with low rear axle caliper bolt torque below specification.

January 2023 – February 2023
The CCRG investigation continued to evaluate the torque level of the rear caliper bolts at Ford and upfitter facilities and found that approximately two percent (2%) of inspected vehicles had torque below specification at one or more caliper bolts. CCRG also reviewed plant maintenance records for the torque wrench and further confirmed the suspect population through statistical analysis.

Ford is not aware of any warranty or field reports related to this condition.

On March 3, 2023, Ford’s Field Review Committee reviewed the concern and approved a field action.

Ford is not aware of any reports of accident or injury related to this condition.


2 Affected Products


FORD F-53 2022
FORD F-59 2022


4 Associated Documents

Recall Acknowledgement

RCAK-23V164-2247.pdf 645.313KB



Defect Notice 573 Report

RCLRPT-23V164-5462.PDF 216.058KB



Manufacturer Notices(to Dealers,etc) – Dealer Bulletin re NEW VEHICLE DEMONSTRATION / DELIVERY HOLD – Safety Recall 23S11 Certain 2022 Model Year Stripped Chassis Vehicles Rear Axle Caliper Bolt Torque Inspection

RCMN-23V164-5375.pdf 355.781KB



ISSUED Owner Notification Letter(Part 577)

RCONL-23V164-1539.pdf 52.548KB



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Last update on 2023-12-06 / Affiliate links / Images from Amazon Product Advertising API

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