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Home >> Audi >> 2012 >> S4 Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 799 (Information And Entertainment Systems - 4.2-Inch (107MM) Screen, Am/Fm/Cd/Sync) >> General Procedures >> Accessory Protocol Interface Module (APIM) Reset
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Accessory Protocol Interface Module (APIM) Reset

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: An APIM Reset consists of a battery disconnect and a SYNC ® system Master Reset. It may not  be necessary to perform a Master Reset after disconnecting the battery if the concern is resolved.
NOTE: This procedure clears all CMDTCs. The DTCs must be recorded now if other non-SYNC ® diagnoses are to be performed after this procedure.

  1. 1.

    Remove any devices connected to the USB port(s), audio input jack/socket (if equipped), Secure Digital (SD) slot (if equipped), or RCA jacks (if equipped).

  1. 2.

    Disconnect the negative battery cable for 1 minute, then reconnect it. Refer to Battery, Mounting and Cables .

  1. 3.

    NOTE: Performing a Master Reset returns all preference settings to the factory defaults, erases the phone book and call histories, and deletes any Bluetooth devices paired with the SYNC ® system. For vehicles with navigation, the customer's saved destinations (home, favorites, and previous) are erased. For vehicles with a Telematics Control Unit (TCU), any devices paired with the MyFord ® Mobile or MyLincoln Mobile™ phone application will be deleted.

    Perform a Master Reset. If necessary, refer to "Master Reset" in the Owner's Literature.

  1. 4.

    Verify system function using the Multi-Media Interface Tester 105-00120 to test the audio output for the USB port(s), audio input jack/socket (if equipped), and Bluetooth. If equipped, test the audio output for the RCA jacks using RCA Adapter 105-00121.

  1. 5.

    NOTE: If the concern remains after completing the APIM Reset procedure, advise the customer to power their device off and back on for a simple reboot. In some cases, if possible, the device's battery may also need to be removed and re-installed to complete a reboot. Delete SYNC ® from the device's Bluetooth menu prior to re-pairing the phone to the SYNC ® system. If necessary, the customer can also perform a Master Clear, Master Reset, or Factory Data Reset on their device following the manufacturer's instructions in the device's owner's manual and/or website. Customer devices may affect the operation of SYNC ® and this should be understood to prevent unnecessary diagnosis or repairs to the system.

    If a concern is still present, return to the Symptom Charts.

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