WARNING: This page is about a different car, the 2012 Land Rover Range Rover Sport and 2011 Land Rover Range Rover Sport. However, it is still accessible from the selected car via links, so may be relevant.

The maximum defrost function automatically provides the maximum defrosting of the vehicle. When the maximum defrost function is selected, the automatic temperature control (ATC) module configures the control system as follows:

Automatic mode off.
Air inlet to fresh air, manual control.
Selected temperature unchanged, automatic control.
Air distribution set to screen mode, manual control.
Blower speed set to speed 5, manual control.
Rear screen heater and windshield heater (if applicable) selected on.
air conditioning (A/C) mode in automatic.

The maximum defrost function is cancelled by one of the following:

Selecting any distribution switch. The system response will be identical to the normal manual distribution control operation.
Selecting the automatic switch. This will restore the system to fully automatic operation.
Selecting the maximum defrost switch again. This returns the system to the state in use immediately before the maximum defrost function was first selected.
Turning the engine off.

The blower speed can be adjusted manually without terminating the maximum defrost function.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Maximum Defrost

Use the Manual With the Right Hardware

When to See a Mechanic

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