Land Rover Defender: Roof Opening Panel - Description

ROOF OPENING PANEL - VEHICLE WITH SLIDING GLASS ROOF OPENING PANEL

1. Closed position
2. Tilted position
3. Open position

1. Roof opening panel glass - Front
2. Roof opening panel glass - Rear

The external surface of the roof opening panel comprises the following 2 elements:

• Roof opening panel glass - Front
• Roof opening panel glass - Rear.

The front roof opening panel glass and the rear roof opening panel glass are manufactured in a tinted laminated glass.

Should the glass break it will remain attached to the plastic membrane, although small pieces of glass may enter the passenger compartment. The tinted glass provides a high degree of sunload protection allowing only 6.5% heat transmission into the vehicle and <1% ultraviolet light.

The roof opening panel features an electrically powered tilt and slide mechanism. On opening, the rear of the front roof opening panel glass tilts upwards before moving rearward.

Anti-trap mechanism

WARNING: Before closing the roof opening panel, make sure that no occupants have any body part in a position where it could be trapped. Even with an anti-trap system, death or serious injury could occur.

NOTE: Vehicle with a sliding canvas sunroof does not have an anti-trap system.

The roof opening panel glass and the roof opening panel blind have an anti-trap protection function which stops the panel closing when an obstruction is sensed. When an obstruction is sensed, the motor automatically retract the panel as far as possible to prevent serious injury or damage to the mechanism. When the obstruction is removed, you can close the panel by using the normal method. The anti-trap mechanism can be overridden to allow the roof to be closed when movement is restricted by dirt. To override the anti-trap, remove the dirt first then press and hold the front of the switch until the roof reaches the closed position.

ROOF OPENING PANEL ASSEMBLIES

Roof Opening Panel Assembly - Vehicle With Sliding Glass Roof Opening Panel

NOTES:

• Vehicle with 5 doors is shown, vehicle with 3 doors is similar.
• RHD is shown, LHD is similar.

1. Roof opening panel air deflector
2. Roof opening panel blind
3. Roof opening panel glass - Front
4. Roof opening panel glass - Rear
5. Motor - Roof opening panel glass
6. Motor - Roof opening panel blind
7. Roof opening panel frame

Vehicle with sliding glass has a master motor with control unit and a slave motor without control unit. The two motors are controlled by the switches located in the front overhead console. The master motor receives a power supply from the Passenger Junction Box (PJB) and communicates with the BCM/ GWM through Local Interconnect Network (LIN).

The slave motor communicates with the master motor on hardwired connection. The roof opening panel glass and the roof opening panel blind are controlled by separated motors. The 2 motors can run at the same time depending on what function the roof is performing.

The motors have a thermal protection device manufactured into the control module software to protect them from overheating. The thermal protection is based on total operation time to calculate temperature through an algorithm.

The motor thermal protection inhibits the motor function after a number of cycles, functionality returns in some minutes.

Roof Opening Panel Assembly - Vehicle With Sliding Canvas Roof Opening Panel

NOTES:

• RHD is shown, LHD is similar.
• Vehicle with a sliding canvas sunroof does not have an anti-trap system.
• The sliding canvas roof opening panel is only available on the 3 door vehicle.

1. Roof opening panel air deflector
2. Roof opening panel frame
3. Roof opening panel - Canvas
4. Motor - Roof opening panel - Canvas (quantity 2)

Vehicles with a sliding canvas roof have 2 electric motors. The 2 electric motors operate at the same time to open or close the sliding canvas roof mechanism. The 2 electric motors are controlled by a single switch located in the front overhead console. The 2 motors drive the same cables at the same time. If one of the motors is broken, the other one cannot drive the canvas roof by itself.

The 2 electric motors each receive a power supply from the PJB. The 2 electric motors communicate with the BCM/ GWM through LIN.

The 2 electric motors have a thermal protection device manufactured into the control module software to protect them from overheating. The thermal protection is based on total operation time to calculate temperature through an algorithm. The motor thermal protection inhibits the motor function after a number of cycles, functionality returns in some minutes.

CONTROL SWITCHES

Control Switches - Vehicle With Sliding Glass Roof Opening Panel

NOTES:

• Vehicle with 5 doors is shown, vehicle with 3 doors is similar.
• RHD is shown, LHD is similar.

1. Front overhead console
2. Switch - Roof opening panel blind
3. Switch - Roof opening panel glass

The roof opening panel glass and the roof opening panel blind are operated through the separate 2-way rocker switch.

The switches are located in the front overhead console. The switches receive a power supply from the BCM/ GWM.

The switches transmit the signal to the motor on a hardwired connection.

Control Switch - Vehicle With Sliding Canvas Roof Opening Panel

NOTES:

• RHD is shown, LHD is similar.
• Vehicle with a sliding canvas sunroof does not have an anti-trap system.
• The sliding canvas roof opening panel is only available on the 3 door vehicle.

1. Front overhead console
2. Switch - Roof opening panel - Canvas

The roof opening panel canvas is operated through the 2-way rocker switch. The switch is located in the front overhead console. The switch receives a power supply from the BCM/ GWM. The switch transmits the signals to the motors on a hardwired connection.

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