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Home >> Land Rover >> 2022 >> Defender 110 S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Battery, Mounting And Cables - Vehicles With: MHEV -- Defender/L663) >> Battery, Mounting And Cables - Vehicles With: MHEV >> General Procedures >> MHEV Power Down/Up (G2422524) >> Disconnection

MHEV Power Down/Up (G2422524): Disconnection

WARNING: This page is about a different variant/trim than selected.
WARNING: All safety locking device keys must be kept in the designated key lock box at least 5 meters away from the vehicle.
NOTE:
  • This procedure contains some variation in the illustrations depending on the vehicle specification, but the essential information is always correct.
  • This procedure contains illustrations showing certain components removed to provide extra clarity.
  1. This procedure involves working on the Mild Hybrid Electric Vehicle (MHEV) systems. It is mandated that the entire power down/up procedure is completed, all technicians involved with the steps in this procedure must have read and understood the relevant sections of the Electric Vehicle Safety Rules.

    Refer to: the appropriate service information .

  2. Make sure that the vehicle is in Park (P), the Electric Park Brake (EPB) is released, the ignition is switched off and the doors are unlocked.
  3. G14070320Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

    Remove all smart keys from the vehicle and store at least 5 meters away from the vehicle, locked in the designated key box. Press the ignition switch to verify that there is no communication with the smart key.

    Special Tool(s): JLR-415-018 

  4. Always refer to the health and safety precautions before carrying out this procedure.

    Refer to: STANDARD WORKSHOP PRACTICES

  5. Open the tailgate.
  6. Disconnect the 12 V system.

    Refer to: 12V SYSTEM DISCONNECT AND CONNECT

  7. G15310764Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

    Disconnect the Battery Monitoring Sensor (BMS) electrical connector.

  8. G15310765Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    • Open the lid of the special tool.

      Special Tool(s): JLR-415-098 

    • Install the startup battery ground cable into the special tool.
    • Close the lid of the special tool.
    • Lock the special tool using an insulated padlock.

      General Equipment: Insulated padlock 

  9. NOTE: Vehicles with 5 seats shown, vehicles with 7 seats similar.
    G15310766Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

    Remove the loadspace floor cover.

  10. NOTE: Vehicles with 5 seats shown, vehicles with 7 seats similar.
    G15310767Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

    Remove the stowage compartment.

  11. G15310768Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

    Disconnect the electrical connector from the MHEV  battery.

  12. WARNING: Wear safety goggles and protective gloves.
    G15310769Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    • Reposition the cover to get access to the nut.
    • Remove the nut.
    • Disconnect the MHEV  battery ground cable.
  13. G15310770Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    • Remove the cover of the special tool.

      Special Tool(s): JLR-415-132 

    • Install the MHEV  battery negative cable into the tool at the position illustrated.
    • Install the cover.
    • Lock the special tool using an insulated padlock.

      General Equipment: Insulated padlock 

  14. G15310771Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    • Reposition the cover to get access to the nut.
    • Remove the nut.
    • Disconnect the MHEV  battery positive cable and tie aside.

      General Equipment: Cable ties 

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