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Service bulletins for the 2018 Ford F-350

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.

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

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Bulletins, newest first
SSM 498462021-07-02. Service bulletin. FUEL SYSTEM, GASOLINE. 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 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" wheelbase chassis cab vehicles, use LC3Z-5L216-C. For F-Super Duty 145/179/192" wheelbase chassis cab vehicles, use LC3Z-5L216-B. For F-Super Duty 168/169/193/205" wheelbase chassis cab vehicles, use LC3Z-5L216-A. For claiming, use causal part 5L239 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.
TSB 21-21992021-07-01. Service bulletin. EQUIPMENT. This article supersedes TSB 21-2144 to update the vehicle model years affected and the Part List. Some 2015-2020 F-150 and 2017-2021 F-Super Duty vehicles may exhibit a lack of heat or cooling from the cabin vents when the climate control settings are adjusted between hot and cold. This may be due to a stuck/binding temperature door within the climate control housing or binding/inoperative temperature door actuator. Diagnostic trouble code (DTC) B1081:07 may be present in the front controls interface module (FCIM). To correct the condition, follow the Service Procedure steps to remove the climate control housing and replace the temperature door actuator(s) and/or lubricate the temperature blend door bearing surface.
21M042021-07-01. Service bulletin. LATCHES/LOCKS/LINKAGES. In some of the affected vehicles, moisture and water entering a power door lock actuator housing can cause the actuator motor to momentarily freeze in cold temperatures and may also cause actuator motor corrosion over time. Frozen water within a power door lock actuator housing or corrosion of the power door lock actuator motor could result in an inoperative power door lock function on the affected door.
TSB 21-21752021-07-01. Service bulletin. ELECTRICAL SYSTEM. Some 2016 MKS, 2016-2017 Navigator, 2016-2018 F-150/Focus/C-MAX/Edge/Fiesta/MKX/Transit Connect/Mustang, 2017-2018 Continental/Fusion/MKZ, 2017-2019 Explorer, 2016-2019 Escape/MKC/Flex/MKT/Taurus/Transit/Expedition/F-Super Duty, and 2018-2019 EcoSport vehicles equipped with SYNC 3 may experience various SYNC performance related concerns.
TSB 21-21732021-06-03. Service bulletin. EQUIPMENT; STEERING. Some 2017-2019 F-250/F-350 4WD vehicles may exhibit a sustained steering wheel oscillation after hitting rough pavement or an expansion joint above 45 mph (72 km/h). This may be due to excessive lag/lash of the steering linkage damper. To correct the condition, follow the Service Procedure to replace the steering linkage damper.
TSB 21-21442021-06-03. Service bulletin. EQUIPMENT. Some 2015-2021 F-150 and 2017-2021 F-Super Duty vehicles may exhibit a lack of heat or cooling from the cabin vents when the climate control settings are adjusted between hot and cold. This may be due to a stuck/binding temperature door within the climate control housing or binding/inoperative temperature door actuator. Diagnostic trouble code (DTC) B1081:07 may be present in the front controls interface module (FCIM). To correct the condition, follow the Service Procedure steps to remove the climate control housing and replace the temperature door actuator(s) and/or lubricate the temperature blend door bearing surface.
SSM 498052021-06-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING. Some 2011-2021 vehicles equipped with a diesel engine may have engine oil in the exhaust after turbocharger replacement for various reasons. To correct the condition, remove the exhaust and stand the exhaust up with the turbocharger inlet side facing down using a suitable drain pan. Allow the exhaust to drain for at least 24 hours and reinstall. Do not perform a manual exhaust regeneration.
SSM 497562021-05-03. Service bulletin. BACK OVER PREVENTION:SOFTWARE. Some 2018-2021 vehicles supported by FDRS may not list a software update for a module under the SW Updates tab although an SSM or TSB is published for a software update. This may be due to the module already being at the latest software level. A later software level may have been programmed at the assembly plant, during a previous dealer visit or by an over the air (OTA) update for vehicles that have automatic updates enabled in the SYNC system settings. To review a vehicle's OTA update history, visit the Connected Vehicle > OTA Dashboard tab in OASIS. Information about the OTA Dashboard can be found on FMCDealer.com when performing a search on OTA History Job Aid.
SSM 497402021-05-03. Service bulletin. STEERING. Some 2017-2021 F-Super Duty four-wheel drive (4WD) vehicles may have a customer concern of intermittently exhibiting excessive steering oscillation. To correct the condition, replace the steering damper with KC3Z-3E651-B and return the vehicle to the customer. For claiming, use causal part 3E651 and applicable labor operations in Section 03 of the Service Labor Time Standards (SLTS) Manual. If the concern returns, refer to the updated procedures, with videos, in Workshop Manual (WSM), Section 211-03 Steering Linkage > Diagnosis and Testing > Symptom Chart.
SSM 497222021-05-03. Service bulletin. WHEELS. Some 2017-2021 F-Super Duty vehicles equipped with dual rear wheels (DRW) and 17 inch aluminum wheels may require valve stem replacement for the front wheels. The parts catalog has been updated to use service part F2GZ-1700-D for the front wheels.
TSB 21-20742021-04-03. Service bulletin. ELECTRICAL SYSTEM. Some 2018-2019 F-Super Duty vehicles equipped with a 6.7L engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P208E, P2459, P245A and/or P259F stored in the powertrain control module (PCM). This may be due to the PCM software. To correct the condition, follow the Service Procedure to reprogram the PCM.
TSB 21-20522021-04-03. Service bulletin. EQUIPMENT. Some 2017-2021 F-Super Duty vehicles equipped with a 6.7L diesel may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P2459, P246C and/or P2463 with a Drive to Clean maintenance message. Vehicles operated primarily in a stationary or off-highway low speed use may exhibit frequent exhaust regeneration attempts. In these conditions, a vehicle may not easily allow for normal exhaust regeneration and may benefit from operator commanded regeneration (OCR) capability so it can perform complete exhaust regeneration in a stationary setting.
SSM 497082021-03-31. Service bulletin. ELECTRICAL SYSTEM. Some 2018-2019 F-150/F-Super Duty/Expedition/Navigator and 2020 Explorer/Aviator vehicles may exhibit a 'Trailer Connected' or 'Trailer Disconnected' message in the vehicle's message center with no trailer attached to the vehicle. To address this condition, reprogram the trailer module (TRM) using the appropriate Ford diagnostic scan tool. For claiming use causal part 19H332 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.
SSM 496932021-03-31. Service bulletin. STEERING. For 2017-2019 F-Super Duty vehicles equipped with adaptive steering and require steering wheel replacement, corrections for SASM and SECM module programming errors have been included in IDS level 121.03. Using IDS software level 121.03, start a NEW session and run the Programmable Module Installation (PMI) procedure. Follow the remaining procedures in Workshop Manual (WSM), Section 211-04 to complete the steering wheel installation.
SSM 495412021-03-03. Service bulletin. EQUIPMENT. Some 2018-2020 Ford and Lincoln vehicles equipped with TCU and WiFi Hotspot, May display Vehicle Hotspot feature not enabled on this vehicle when attempting to enter the Hotspot menu. When using the FordPass/Lincoln Way application, the customer may receive a message saying Wi-Fi has been disabled from this vehicle. Check the vehicle specifications or vehicle build information for the mfal code on the PTS website (Detailed Vehicle Specifications). If mfal = WAFAC or WAFAB do not replace the TCU, engineering is currently investigating this condition. Inform customers Ford is developing a software fix that is expected in early March. In the interim, let the customer know they can continue to drive the vehicle and schedule a follow-up appointment with the customer for early March. Monitor OASIS for updates.
SSM 496282021-03-03. Service bulletin. STEERING. Some 2017-2021 F-Super Duty vehicles may intermittently exhibit excessive steering oscillation. A new instructional video has been published in the Workshop Manual (WSM) to provide specific measurement instructions on the appropriate tools and methods to determine which steering linkage joints are exceeding lash specifications and which are operating as designed. The left side tie rod end and sector shaft arm drag link joints should not be replaced without obtaining the proper lash measurements. Refer to WSM, Section 211-03 Steering Linkage > Diagnosis and Testing > Symptom Chart.
TSB 20-20672021-03-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Some 2017-2020 F-Super Duty vehicles equipped with a 6.7L engine built on or before 10-Jun-2020 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) U029D, U029E, P22A7 and/or P2209 in the powertrain control module (PCM). This may be due to water intrusion into the oxides of nitrogen (NOx) connectors. To correct the condition, follow the Service Procedure to inspect the NOx sensor module and replace the 14406 wire harness.
SSM 494952021-02-04. Service bulletin. EQUIPMENT. Some 2005-2021 F-Super Duty 4x4 vehicles operated in extreme dust, mud or tar sand conditions may exhibit accelerated 4x4 vacuum hub seal and or wheel bearing wear as a result of harsh operating conditions. A knuckle seal shield kit is now available for customer purchase. The kit is designed for severe duty and is non warrantable. The knuckle seal shield kit GC3Z-54024A38-A includes an installation instruction sheet
SSM 494832021-02-04. Service bulletin. POWER TRAIN. Some 2017-2021 F-Super Duty and 2016-2021 F650-750 with 6.7L diesel engines, 2015-2019 Transit with 3.2L diesel engines and 2018-2021 F-150 with 3.0L diesel engines may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P206C in the powertrain control module (PCM). Review of repair data supports that P206C is often the result of incorrect diesel exhaust fluid (DEF) concentration. Per Powertrain Control/Emissions Diagnosis (PC/ED) Pinpoint Test (PPT) RJ, a DEF concentration reading below 28% will set P206C and cause vehicle derate. If low concentration is suspected, drain fluid and replace with known good DEF before replacing any parts. Low concentration of DEF is not a warrantable condition.
SSM 494302021-02-04. Service bulletin. ENGINE AND ENGINE COOLING. 2011-2021 F-Super Duty and 2016-2021 F-650/F-750 vehicles equipped with a 6.7L engine may exhibit a high/elevated idle condition. During prolonged idle time, vehicles may experience this high/elevated idle to reduce buildup of unburned hydrocarbons from the SCR system. The powertrain control module (PCM) estimates hydrocarbon levels in the SCR and may increase idle speed to remove them. Idle speed will be increased to 1000 revolutions per minute (rpms) for ambient temperatures near 26C (80F) and may increase to as high as 1200 rpms at -40 C (-40F). These elevated idle periods can last from 20-40 minutes, depending on ambient temperatures. During power take off (PTO) use and already using idle set point control, the elevated speed is disabled. It is required that the operator monitor the vehicle and adhere to the Exhaust Filter warning messages.
SSM 493632020-12-04. Service bulletin. POWER TRAIN. Some 2017-2019 F-Super Duty vehicles may experience an intermittent no crank condition. Diagnostic trouble code (DTC) P06E9 may also be set in the powertrain control module (PCM). This may be due to corrosion being present on the run start relay in the battery junction box (BJB). Inspect the run start relay for signs of corrosion, including along the terminal edges, prior to performing Workshop Manual (WSM) diagnostics. If no corrosion is found on the run start relay, refer to WSM, Section 303-06 to address this condition.
SSM 492922020-11-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Some 2018-2020 Ford and Lincoln vehicles may exhibit inoperative remote features via the Ford Pass/Lincoln Way mobile app, incomplete user authorization, no modem electronic serial number (ESN) displayed or DTCs U2100 and/or B156D in the telematics control unit (TCU). These symptoms may persist even after performing a TCU software update and/or replacement. To correct this condition, start a new session with the latest version of the appropriate diagnostic scan tool and perform a PMI on the TCU. If issues persist, open a hotline assistance request and include the IDS version (if applicable) used to perform the PMI and the Authorization Status PID value in the TCU datalogger. For claiming use causal part 14H092 and applicable labor times in Section 10 of the Service Labor Time Standards (SLTS) Manual.
SSM 492842020-11-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:SOFTWARE. Some 2018-2020 Ford and Lincoln vehicles equipped with TCU and WiFi Hotspot, May display Vehicle Hotspot feature not enabled on this vehicle when attempting to enter the Hotspot menu. When using the FordPass/Lincoln Way application, the customer may receive a message saying Wi-Fi has been disabled from this vehicle. Check the vehicle specifications or vehicle build information for the mfal code. If mfal = WAFAC or WAFAB do not replace the TCU, engineering is currently investigating this condition. Inform customers Ford is developing a software fix that is expected in early January. In the interim, let the customer know they can continue to drive the vehicle and schedule a follow-up appointment with the customer for early January. Once the update becomes available, contact the customer and confirm the service appointment is going forward. Monitor OASIS for updates.
SSM 492022020-10-06. Service bulletin. ELECTRICAL SYSTEM. Some 2017-2020 F-Super Duty vehicles equipped with a 6.7L diesel engine may exhibit an illuminated malfunction indicator lamp (MIL) and diagnostic trouble code (DTC) P20EE. The Powertrain Controls and Emissions Diagnosis (PC/ED) pinpoint test RD15 has been updated to perform a Diesel Particulate Filter (DPF) Manual Regeneration twice along with performing the Specified Function SCR Parameter Reset with the appropriate Ford diagnostic scan tool.
TSB 20-22672020-10-01. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR. Some 2015-2020 F-150 except Raptor, 2017-2020 F-Super Duty, 2018-2020 Expedition vehicles equipped with a front camera washer may exhibit a washer fluid leak at the front camera washer jet when not in use. This may be due to the rubber seal internal to the jet. To correct the condition, follow the Service Procedure to replace the washer jet.

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