Land Rover Discovery: Parking Brake and Actuation Electronic Parking Brake Release When the Vehicle Has no Electrical Power (G1785116) / General Procedures

CHECK

WARNING:

Chock the wheels and make sure that all personnel are clear of the vehicle before carrying out the following procedure

NOTES:

• To be carried out in the event that the vehicle has no electrical power.
• Right hand illustration shown, left hand is similar.

Disconnect the battery ground cable.

Refer to: Specifications (414-01 Battery, Mounting and Cables, Specifications).

WARNING:

Make sure to support the vehicle with axle stands.

Raise and support the vehicle.

Refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).

CAUTION:

Discard the bolt.

NOTE:

Remove and discard the O-ring seal.

Torque: 11 Nm

NOTE:

Some variation in the illustrations may occur, but the essential information is always correct.

ADJUSTMENT

CAUTION:

A new O-ring seal is to be installed.

To install, reverse the removal procedure.

Repeat the above procedure for the other side.

Calibrate the electric parking brake (EPB) using the diagnostic tool.

Parking brake and actuation electronic parking brake service mode activation and deactivation (G1785115) general procedures

ACTIVATION

CAUTIONS:

• The electric park brake (EPB) switch apply/release is inhibited while in this mode (for safety of technicians fingers) so do not drive the vehicle in this condition. Failure to follow this instruction may cause personal injury.
• This procedure requires the vehicle in the Park or Neutral position, with the ignition turned ON (the engine must be OFF) and the parking brake system released.
• Once the rear brake pads or brake discs have been installed, the Service Mode must be cancelled.

NOTE:

This procedure allows the parking brake to be released when removing and installing new rear brake pads or brake discs.

1. Press and hold the parking brake switch in the release position.
2. Wait one second.
3. Press and hold the accelerator pedal in the wide open throttle position.
4. Wait one second.
5. Switch the ignition OFF and back ON immediately.

NOTE:

An audible noise will be heard to confirm that the parking brake has been released in Service Mode.

6. Release the accelerator pedal and release the parking brake switch to the neutral position.

NOTE:

An audible noise will be heard to confirm that the parking brake has been released in Service Mode.

DEACTIVATION

CAUTION:

This procedure requires the vehicle in the Park or Neutral position, with the ignition turned ON (the engine must be OFF) and the parking brake system in Service Mode.

7. Press and hold the parking brake switch in the apply position.
8. Wait one second.
9. Press and hold the accelerator pedal in the wide open throttle position.
10. Wait one second.
11. Switch the ignition OFF and back ON immediately

NOTE:

An audible noise will be heard to confirm that the parking brake has been released from the Service Mode.

12. Release the accelerator pedal and release the parking brake switch to the neutral position.

NOTE:

An audible noise will be heard to confirm that the parking brake has been released from the Service Mode.

Parking brake and actuation parking brake module (G1785117) removal and installation

REMOVAL

NOTE:

The electric park brake (EPB) system software is integrated within the anti-lock brake (ABS) module.

1. Refer to: Anti-Lock Brake System (ABS) Module (206-09 Anti-Lock Control, Removal and Installation).

INSTALLATION

1. To install, reverse the removal procedure.
2. Calibrate the EPB system in the ABS module using the diagnostic tool.

Hydraulic Control Unit (HCU)Parking Brake and Actuation Parking Brake Release Actuator (G1785118) / Removal and Installation

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