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Service bulletins for the 2018 Ford F-550

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

235 on file from NHTSA, as of 2026-10-19.

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Bulletins, newest first
TSB 22-23802022-10-31. Service bulletin. ENGINE AND ENGINE COOLING. Some 2017-2019 F-Super Duty chassis cab/dual rear wheel (DRW) pickup vehicles and 2016-2019 F-650/F-750 vehicles equipped with a 6.7L engine may exhibit a concern of oil consumption in applications where the engine is idled for extended periods of time. This may be due to high crankcase pressure as a result of the crankcase ventilation filter element becoming restricted. To correct the condition, follow the Service Procedure to replace the crankcase oil separator and to inspect the turbocharger to determine whether the turbocharger needs to be replaced. Note: The new crankcase vent oil separator appears different from the old crankcase vent oil separator as it no longer includes a serviceable filter element.
SSM 511222022-10-11. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY. Some 2017-2022 F-250-F-550, 2015-2020 F-150 and 2018-2022 Expedition vehicles without push button start and passive entry may exhibit a condition where it is difficult to insert the ignition key and/or turn it to the accessory position when removing the ignition lock cylinder per the functional lock cylinder service procedure in Workshop Manual (WSM), Section 501-14. This may be due to debris or contamination in the ignition lock cylinder. If this concern occurs, use a suitable shop vacuum to dislodge or remove debris or contamination by placing the vacuum hose over the lock cylinder, without the key installed, for 30 seconds. Insert the ignition key and reattempt turning it to the accessory position for lock cylinder removal. If the key will not turn to the accessory position, continue with the non-functional lock cylinder removal procedure.
SSM 511202022-10-11. Service bulletin. SERVICE BRAKES, HYDRAULIC. Some Ford and Lincoln vehicles may exhibit noise when the brakes are applied. When diagnosing and repairing brake noise conditions, use the Workshop Manual (WSM) and the appropriate pinpoint test in section 206-00. The brake rotors should only be machined if directed by the WSM because one or more of the following conditions are present on the braking surface: scoring, excessive corrosion/rust or pitting, bluing/discoloration and/or heat spots. For additional information, refer to WSM section 206-00.
21B04 S42022-10-05. Service bulletin. STRUCTURE:FRAME AND MEMBERS. Certain 2017 through 2020 Model Year F550 Equipped with Payload Plus Upgrade Package Frame Rail Crack Program Terms: Program will be extended for an additional year; Urgency/Expiration Date: Program will be extended for an additional year Owner Refunds: Refunds have been extended to December 31, 2022, for owner paid repairs completed prior to owner notification date
SSM 511042022-10-03. Service bulletin. STEERING. Some 2017-2019 F-Super Duty vehicles equipped with adaptive steering may require steering wheel replacement for various reasons. The steering wheel assembly contains the steering effort control module (SECM) and steering angle sensor module (SASM). Previous software versions of the Integrated Diagnostic Software (IDS) scan tool may not have programed the SECM properly after replacement. Engineering has corrected the concern and SECM programming can now be successfully performed on these vehicles using the latest software level of IDS.
TSB 22-23562022-09-30. Service bulletin. POWER TRAIN. Some 2015-2019 F-Super Duty vehicles may experience a transmission fluid leak from a cracked transmission case or transmission fluid pan. This may be due to a driveline vibration condition. For vehicles that have a concern with a cracked transmission case (Figures 1-2) or fluid pan (Figures 3-4), the rear driveline imbalance most often is the root cause of this concern. To correct the condition, follow the Service Procedure to replace the rear driveline.
21M05 S22022-08-30. Service bulletin. ELECTRICAL SYSTEM. Certain 2017-2022 Model Year Super Duty Vehicles Equipped with a Power Release Tailgate - Unintended Tailgate Opening ;REASON FOR THIS SUPPLEMENT Technical Information: Updated with revised instructions to account for wire color differences across multiple model year vehicles.
SSM 509662022-08-02. Service bulletin. POWER TRAIN. Some 2017-2019 F-Super Duty/F-650/F-750 vehicles may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P24D1 stored in the powertrain control module (PCM). To correct the condition, replace the particulate matter (PM) sensor. Refer to Workshop Manual (WSM), Section 303-14. For F-650/F-750 vehicles, use LC4Z-5L216-A. For F-Super Duty pickup and 203 inch wheelbase chassis cab vehicles, use LC3Z-5L216-C. For F-Super Duty 145/179/192 inch wheelbase chassis cab vehicles, use LC3Z-5L216-B. For F-Super Duty 168/169/193/205 inch wheelbase chassis cab vehicles, use LC3Z-5L216-A. Do not attempt a programmable module installation (PMI) after installation of the PM sensor. For claiming, use causal part 5L239 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.
21M05-S12022-07-28. Service bulletin. STRUCTURE:BODY:TAILGATE; LATCHES/LOCKS/LINKAGES; EQUIPMENT. Certain 2017-2022 Model Year Super Duty Vehicles Equipped with a Power Release Tailgate - Unintended Tailgate Opening. In the affected vehicles, some customers report experiencing an unintended tailgate opening and may have previously serviced their vehicle for this concern. Ford had developed an enhanced remedy for customers who may want this enhanced repair performed n their vehicle.
SSM 509372022-07-20. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Some 2015-2022 F-150, 2017-2022 F-Super Duty and 2018-2022 Expedition/Navigator vehicles may exhibit poor air conditioning (A/C) performance. Workshop Manual (WSM) diagnostic procedures have been updated to more accurately diagnose A/C performance concerns. Refer to the updated Diagnosis and Testing, and General Procedure in the WSM, Section 412-00 Climate Control System for diagnostic procedures
21M052022-06-15. Service bulletin. LATCHES/LOCKS/LINKAGES; LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH. In the affected vehicles, some customers report experiencing an unintended tailgate opening and may have previously serviced their vehicle for this concern. Ford has developed an enhanced remedy for customers who may want this enhanced repair performed on their vehicle.
20N04-S12022-06-13. Service bulletin. STEERING. Certain 2017 through 2019 Model Year F250/350 4x4 and all F450/550 Vehicles - Steering Linkage Damper Replacement. In some of the affected vehicles, customers may experience sustained steering wheel oscillation after hitting rough pavement or an expansion joint at speeds typically above 45 mph (72 Km/h).
TSB 22-22232022-06-13. Service bulletin. ENGINE AND ENGINE COOLING. Some 2017-2019 F-Super Duty chassis cab/dual rear wheel (DRW) pickup vehicles and 2016-2019 F-650/F-750 vehicles equipped with a 6.7L engine may exhibit a concern of oil consumption in applications where the engine is idled for extended periods of time. This may be due to high crankcase pressure as a result of the crankcase ventilation filter element becoming restricted. To correct the condition, follow the Service Procedure to replace the crankcase oil separator and to inspect the turbocharger to determine whether the turbocharger needs to be replaced.
SSM 508042022-06-01. Service bulletin. ELECTRICAL SYSTEM. Some 2013-2023 Ford or Lincoln vehicles with modems activated through FordPass or LincolnWay may experience 12 volt battery drain symptoms when the customer uses non-Ford/Lincoln phone applications as an alternate channel to access vehicle commands such as door lock/unlock, remote start, vehicle location, etc. The battery drain may be caused by excessive calls for data through the vehicle network keeping it in an activated state. Recommend that the customer uninstall the app to ensure this is not contributing to battery symptoms experienced. Advise the customer that unaffiliated third-party app developers do not work directly with Ford to adhere to security, vehicle communication, and privacy requirements.
SSM 507862022-05-24. Service bulletin. AIR BAGS. Some 2015-2020 F-150, 2017-2022 Super Duty and 2018-2021 Expedition vehicles may experience a cracked or splitting driver air bag cover. This may be due to the air bag cover tear seam design. An updated driver air bag assembly has been released with a more robust air bag cover design. Refer to Workshop Manual (WSM), Section 501-20B for the replacement procedure. If servicing under warranty, use causal part 15043B13 for F-150 and Expedition or 25043B13 for Super Duty and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.
TSB 22-22012022-05-24. Service bulletin. ENGINE AND ENGINE COOLING. Some 2017-2019 F-Super Duty/F-650/F-750 vehicles equipped with a 6.7L may exhibit an engine oil leak. This may be due to the mating surface of the upper oil pan and the engine block. To correct the condition, follow the Service Procedure to reseal the engine block.
TSB 22-21912022-05-24. Service bulletin. ELECTRICAL SYSTEM. Some 2018-2021 F-150 vehicles equipped with a 3.0L diesel engine, 2016-2022 F-650/F-750 vehicles equipped with a 6.7L engine, and 2017-2022 F-Super Duty vehicles equipped with a 6.7L engine and built on or before 08-Mar-2022 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P21DD, P20BA. P20B9, P204C, P208A, P208B, P208C, P203B, P205B, P21CD and/or U02A2 in the powertrain control module (PCM). This may be due to water intrusion within connectors C3613 and/or C4851/C3610 on the reductant harness going to the reductant pump/heater assembly and the reductant level sensor/quality module. This may also be due to movement of the wiring harness causing terminal fretting. To correct the condition, follow the Service Procedure to replace the reductant tank harness, the reductant pump/heater assembly and/or the reductant tank, as well as securing the wiring harness using a cable zip tie fastener.
21M052022-05-20. Service bulletin. UNKNOWN OR OTHER; LATCHES/LOCKS/LINKAGES:TAILGATE:LOCK. Certain 2017-2022 Model Year Super Duty Vehicles Equipped with a Power Release Tailgate - Unintended Tailgate Opening - In the affected vehicles, some customers report experiencing an unintended tailgate opening and may have previously serviced their vehicle for this concern. Ford has developed an enhanced remedy for customers who may want this enhanced repair performed on their vehicle.
SSM 506512022-05-04. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; EQUIPMENT. In various 2017-2022 Ford and Lincoln vehicles, customers may receive a message in the FordPass or LincolnWay App stating "Feature Unavailable. Since this is a fleet vehicle, it cannot access the (SYNC Connect) FordPass or LincolnWay app through the TCU Embedded Modem. If this message appears, the vehicle may be equipped with a fleet telematics module. Replacement of the TCU or TCU related repairs will not prevent this message from appearing. Please refer the customer to in app FordPass Guides or LincolnWay Concierge Teams to aid with fleet telematics removal. Open app, select Account > Help > CHAT or CALL option
21B04-S32022-05-04. Service bulletin. STRUCTURE. Certain 2017 through 2020 Model Year F550 Equipped with Payload Plus Upgrade Package-Frame Rail Cracks: In some of the affected vehicles certain second unit body (SUB) upfits could cause stress points on the frame rail. Over time this stress could cause a crack in the fame rail behind the cab.
SSM 507182022-05-03. Service bulletin. SERVICE BRAKES. Some 2017-2022 F-Super Duty vehicles may exhibit a pull / drift condition during braking. This may be due to the brake pads needing to be broken in. The Workshop Manual, Section 206-00 Symptom Chart for vehicle pulls or drifts during braking has been updated to reflect this information.
21B04-S22022-04-04. Service bulletin. STRUCTURE. Certain 2017 through 2020 Model Year F550 Equipped with Payload Plus Upgrade Package - Frame Rail Crack: In some of the affected vehicles certain second unit body (SUB) upfits could cause stress points on the frame rail. Over time this stress could cause a crack in the frame rail behind the cab.
SSM 506362022-03-29. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; ENGINE AND ENGINE COOLING; EQUIPMENT. 2011-2022 F-Super Duty and 2016-2023 F-650/F-750 vehicles equipped with a 6.7L engine may exhibit an elevated idle condition. During prolonged idle time, vehicles may experience this elevated idle to reduce unburned hydrocarbons from the SCR. The powertrain control module estimates hydrocarbon levels in the SCR and may increase idle speed to remove them. Idle speed will be increased to 1000 RPM for ambient temperatures near 26°C (80°F) and may increase to 1200 RPM at -40 °C (-40°F). Vehicles may exhibit exhaust smoke and diesel exhaust fluid smell during elevated idle condition. Exhaust smoke and smell condition will not affect reliability or durability of the engine. Power take-off (PTO) use and idle set point control will disable elevated speed. It is required that the operator monitor the vehicle and adhere to any Exhaust Filter warning messages.
SSM 505902022-03-22. Service bulletin. EQUIPMENT. Some 2018-2022 F-150 and F-Super Duty vehicles equipped with tailgate step assemblies may exhibit a step assembly that binds/will not open or opens/pops up while driving. This could be due to an incorrect adjustment of the step assembly. Before replacing any components for this concern, follow the Tailgate Step Adjustment procedure in Workshop Manual, Section 501-04, General Procedures.
TSB 22-21042022-03-22. Service bulletin. EQUIPMENT:MECHANICAL; SEATS; EQUIPMENT. This article supersedes TSB 21-2236 to update the models and year affected. Some 2013-2018 C-Max, 2013-2020 Fusion/MKZ, 2013-2022 Escape, 2015-2018 Focus, 2015-2019 MKC, 2015-2022 Edge/F150/Mustang, 2016-2018 MKX, 2016-2019 Explorer, 2017-2022 F-Super Duty, 2018-2022 EcoSport/Expedition, 2019-2022 Ranger/Nautilus, 2021-2022 Bronco/Bronco Sport/Mustang Mach-E, 2022 Maverick vehicles may experience seat pan looseness, lateral movement, or a clunk/thump noise on turns. This may be due to the seat pan track. To correct the condition, follow the Service Procedure steps to install a reinforcement.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.