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Lincoln Navigator: Supplemental Restraint System / Supplemental Restraint System (SRS) Depowering. General Procedures

Lincoln Navigator 2018-2025 Workshop Manual / Body and Paint / Supplemental Restraint System / Supplemental Restraint System (SRS) Depowering. General Procedures

Depower

  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

  1.   WARNING: Before beginning any service procedure in this manual, refer to health and safety warnings in section 100-00 General Information. Failure to follow this instruction may result in serious personal injury.

    Refer to: Health and Safety Precautions (100-00 General Information, Description and Operation).
  1. Determine if a SRS fault is present. Turn the ignition OFF and wait 10 seconds, then turn the ignition ON and monitor the airbag warning indicator. The airbag warning indicator illuminates continuously for approximately 6 seconds and then turns off. Continue to monitor the airbag warning indicator for approximately 30 seconds as this is the time required for the RCM to complete testing of the SRS .
    • If the airbag warning indicator either fails to light, remains lit continuously or flashes, an SRS fault is present. The flashing may not occur until approximately 30 seconds after the ignition has been turned from OFF to ON. If this occurs, diagnose and repair any SRS faults before proceeding with other repairs. Go to step 5.
    • If the airbag warning indicator is inoperative and a SRS fault exists, a chime sounds in a pattern of 5 sets of 5 beeps or a message displays in the message center. If this occurs, diagnose and repair the airbag warning indicator and any SRS faults before proceeding with other repairs. Go to step 5
    • If after the ignition has been turned ON for 30 seconds the airbag warning indicator remains unlit with no chime or SRS message displayed in the message center, no SRS fault is present. Go to step 4.

No SRS Fault Present (with ignition ON, airbag warning indicator stays off after prove out)

  1.   WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Ignition must remain OFF until repair is complete. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

    Turn the ignition OFF and wait one minute before continuing vehicle service.

SRS Fault Present

  1. Turn the ignition OFF.
  1. Remove the BCM fuses from the BJB . Refer to Wiring Diagram Cell 11 for fuse and relay information.
  1. Disconnect the battery.
    Refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).
  1. Wait at least one minute before continuing vehicle service.

    Pyrotechnic Device Disposal. General Procedures

    Disposal Disposal of Deployable Devices and Pyrotechnic Devices That Are Undeployed-Inoperative NOTE: All inoperative airbags, seatbelt pretensioners and inflatable seatbelt inflators have been placed on the Mandatory Return List...

    Supplemental Restraint System (SRS) Repowering. General Procedures

    Repower   WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions...

    Other information:

    Lincoln Navigator 2018-2025 Workshop Manual: Front Drive Axle and Differential. Description and Operation


    The front drive axle consists of: A cast-aluminum center section, a removable cast-aluminum axle housing tube and a differential housing cover. Both the axle housing tube and the differential housing cover use silicone sealant as a gasket...

    Lincoln Navigator 2018-2025 Workshop Manual: Anti-Lock Brake System (ABS) and Stability Control - Overview. Description and Operation


    Overview The ABS and stability control systems are comprised of the following subsystems which assist the driver in maintaining control of the vehicle: ABS Auto hold (EPB ) EBB Drive away release (EPB ) EBD EPB control ESC Hill descent control Hill start assist RSC ..

    Categories

    • Manuals Home
    • 4th Gen Lincoln Navigator Service Manual (2018 - 2025)
    • Remote Function Actuator (RFA) Module. Removal and Installation
    • Head Up Display (HUD) Module Calibration. General Procedures
    • Liftgate Trim Panel. Removal and Installation
    • Vehicle Dynamics Control Module (VDM). Removal and Installation
    • Brake Service Mode Activation and Deactivation. General Procedures

    Rear Drive Halfshafts. Diagnosis and Testing

    Preliminary Inspection

    Visually inspect the CV joints, housing, boots, and clamps for obvious signs of mechanical damage.
    If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
    If the cause is not visually evident, verify the symptom and REFER to Symptom Chart: NVH.

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