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Ford TSB #TSB 21-2388
2021 Ford F-150
TSB Document:
Affected Component: EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM)
- Summary
- Some 2021 F-150 vehicles equipped with SYNC 4 without navigation may exhibit a condition where the compass direction indication is stuck or is not updating correctly in the instrument cluster and/or SYNC 4 screen. This may be due to a software concern in the telematics control unit (TCU) and the accessory protocol interface module (APIM). To correct the condition, follow the Service Procedure steps to reprogram the TCU and the APIM. Note: The TCU and the APIM software update that addresses the symptom listed in this bulletin may have been sent via over the air (OTA) to connected vehicles that have automatic updates enabled through the SYNC 4 screen. Enter the vehicle identification number (VIN) in Professional Technician System (PTS) and check the OTA Dashboard under the Connected Vehicle tab for OTA update history. If an update to the APIM has successfully completed recently and the customer is reporting the symptoms are no longer present, this article may not apply.
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