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Service bulletin 20B27

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10181985
Published by NHTSA2020-11-04
Manufacturer's number20B27
Manufacturer's date2020-10-09
NHTSA componentPOWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

In affected vehicles, the transmission torque converter may overheat in certain driving conditions. If the torque converter overheats it can lead to adverse NVH, rough idle, and low performance concerns. Ultimately this will require internal transmission repairs to resolve the concern. Ford Motor Company has developed and update to the Powertrain Control Module software that helps protect the transmission torque converter from overheating when exposed to certain driving styles.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Transmission and driveline, Software

Vehicles listed
FORD EXPLORER2016, 2017, 2018, 2019
LINCOLN MKC2015, 2016, 2017, 2018, 2019

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
SSM 503952022-02-04. Service bulletin. Some 2016 Explorer vehicles equipped with factory remote start (on the key fob) may exhibit erratic operation of the climate control seats and/or heated steering wheel during a remote start event. Examples of this may include: cooled seats when the last setting commanded heated seats, inoperative/deactivated heated steering wheel, etc. This may be due to a software concern within the HVAC control module. To correct this condition, update the HVAC control module to the latest software level using the latest version of the IDS service scan tool. For claiming use causal part number 19980 and refer to applicable labor times found in Section 10 of the Service Labor Time Standards (SLTS) Manual.
SSM 503752021-12-27. Service bulletin. Some 2016-2021 Ford and Lincoln vehicles equipped with SYNC 3 may exhibit a condition where the navigation voice prompts are inoperative after a SYNC map update. This may be due to an incomplete installation of the SYNC map software. If possible, using the original USB that installed the update, reperform the update and verify the navigation voice prompts have returned. Multiple reboots are expected when this update is being performed. Verify the Installation Is Complete message displays in the touch screen. If the original USB is not available, go to website https://syncnavigation.com/ford/home or https://syncnavigation.com/lincoln/home to download the files once more for the affected vehicle. For further map update support, reference the FAQ section on these websites.
SSM 492922020-11-04. Service bulletin. 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. 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.
TSB 20-22552020-09-02. Service bulletin. Some 2016 MKS, 2016-2017 Navigator, 2016-2018 F150/Focus/CMAX/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. To correct the condition, follow the Service Procedure.
SSM 478792019-04-03. Service bulletin. Various 2019 vehicles equipped with SYNC 3 and the latest software version 3.2 may exhibit an error message when attempting to update the software to version 3.3. Professional Technician Society (PTS) website may show that software version 3.3 is available for 2019 SYNC 3 vehicles. Do not carry out this update as it may lead to a hardware error message. Engineering is investigating, monitor OASIS for updates.
SSM 470412018-06-11. Service bulletin. Various 2016-2017 vehicles with SYNC 3 may experience a touch screen that does not respond to any input. Using the Professional Technician Society (PTS) website > OASIS tab > SYNC version, verify the vehicle SYNC software version. If the vehicle is at version 2.2 please update the module to the latest software level. After the software is updated make sure you shut the vehicle off, open the door for 2 minutes, then turn the key back on before testing the touch screen. If the software is at a later version than 2.2, proceed with normal diagnostics in Workshop Manual (WSM), Section 415-00. For claiming, use causal part 14G371 and applicable labor operations in section 10 of the Service Labor Times Standards (SLTS) manual.
SSM 472112018-05-21. Service bulletin. Some 2016-2017 Ford and Lincoln vehicles equipped with SYNC 3 version 2.2 software may exhibit a blank screen after attempting to exit Valet mode. SYNC software updates are now available under the OASIS Tab SYNC selection. If update is available, refer to WSM Section 415-00 and update APIM software. For claiming, use causal part 14G371 and applicable labor operations in section 10 of the SLTS manual.
SSM 468482017-10-21. Service bulletin. Some owners of 2016-2017 Ford and Lincoln vehicles equipped with SYNC 3 may experience inoperative mobile device navigation applications. Mobile device navigation via AppLink requires SYNC 3 version 2.3 or higher for Apple iOS users. Mobile device navigation via AppLink is not currently available for Android users. SYNC 3 software upgrades to support these apps are not currently available, do not attempt any repairs at this time. Engineering is investigating, monitor OASIS for updates. SYNC 3 software upgrade to support these apps is not a warrantable repair per the Warranty And Policy Manual, Section 3, Warranty Coverages SYNC.
SSM 468342017-10-21. Service bulletin. Some 2016-2017 Ford and Lincoln vehicles with SYNC 3 may exhibit an intermittent blue or black screen. Check for SYNC software update under the OASIS Tab SYNC selection. If update is available refer to WSM, Section 415-00 and update APIM software. After Installation Complete pop-up appears, remove USB flash drive and install into IDS tool to update Ford database. Perform a complete ignition cycle by turning the key off for 5 minutes which is critical for a successful installation. If no updates are available or a blue or black screen is present after an update refer to WSM, Section 415-00 for diagnosis or SYNC 3 intermittent blank screen GSB for tips. For claiming, use causal part 14G371 and applicable labor operations in section 10 of the SLTS manual.