Land Rover Range Rover Owners Handbook Lm 2nd Edition Rover

							Heating & Ventilation
80
Heating &  VentilationVENTILATION
The ventilation system provides fresh or heated 
air to the interior of the vehicle from the air 
intake grille in front of the windscreen. 
NOTE: Always keep the air intake grille clear of 
obstructions such as leaves, snow or ice.
Air outlets are provided to the windscreen, face 
and feet - the location of those vents is shown 
in the illustration above. The temperature of the 
air supplied to the vents is controlled by the 
heater.
Information concerning the operation of the 
heating and ventilation system, appears on the 
following pages.
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Air Vents
The temperature of the air from all vents is 
controlled by the temperature settings of the 
heater.
Rotate the thumbwheel towards the green 
indicator to open, or the white indicator to close 
the vents. Direct the air flow by moving the 
control in the centre of the louvres.
To ensure best ventilation and minimum noise, 
the vents should be fully open when the air 
conditioning air distribution control is set to 
face level.
Centre foot/face level vents
When the air conditioning air distribution 
control is set to either ‘Auto’ or ‘Face and Foot’ 
outlet, the temperature of the air emitted 
through the foot/face level vents can be finely 
adjusted to differentiate between foot and face 
temperature. Rotate the thumbwheel (1), 
towards the left (red indicator) for warm air and 
to the right (blue indicator) for cooler air.Side face level vents
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H3978 
						

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Rear vent controls
The left hand control operates the blower; 
rotate the thumbwheel upwards to increase the 
blower speed. The right hand control adjusts 
the temperature; rotate the thumbwheel 
upwards (red indicator) for warmer air, 
downwards (blue indicator) for cooler air.
NOTE: The temperature set by the front 
occupants restricts the maximum level of warm 
air the rear passenger can select.
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CONTROLS (Semi-automatic air conditioning models)
1. Temperature control
Rotate the control clockwise to increase the air 
temperature, or anti-clockwise to reduce the 
temperature. 
NOTE: The temperature settings around the 
outside of the control are given in degrees 
centigrade (ºC).
2. Air blower control
Rotate the control to the clockwise to 
progressively increase the fan speed. 
With the control at ‘0’ the blower and air 
conditioning are switched off and the fresh air 
supply from outside the vehicle is shut off.3. Air distribution control
Rotate to select the appropriate setting to direct 
air as required.
Air to face vents.
Air to face vents and foot outlets (to 
ensure best performance, the face vents 
must be fully open).
AUTO - This setting selects the most efficient 
heater settings to maintain an optimum level of 
comfort within the vehicle.
All air to windscreen (recommended for 
clearing heavy windscreen misting).
Air to foot outlets and windscreen 
(recommended for clearing mild 
windscreen misting).
 - Air to foot outlets.
4. Heated front screen
Press to operate, the indicator light in the 
switch will illuminate whenever the screen 
heater is on.
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5. Heated rear screen
Press to operate; the indicator light in the 
switch illuminates whenever the screen heater 
is on.
WARNING
DO NOT stick labels over the heating 
elements on the rear screen, and DO NOT 
scrape or use abrasive materials to clean the 
inside of the rear screen.
6. Air conditioning switch
With the engine running and the blower 
switched on, press to activate the air 
conditioning. The indicator light in the switch 
illuminates when the air conditioning has been 
selected.7. Air recirculation switch
Press to recirculate air inside the vehicle 
(indicator light illuminates).
The air recirculation mode prevents the heating 
system from taking in fresh air from outside the 
vehicle. Instead, the air already inside the 
vehicle is recirculated, thus preventing the 
entry of traffic fumes. In cold weather air 
recirculation also enables warmer air to be used 
to defrost the windscreen when the engine is 
still cold. 
WARNING
The air recirculation mode can cause the 
windscreen to mist. If this happens, switch off 
air recirculation immediately.
NOTE: The air blower switch, air conditioning 
and air recirculation control will only operate 
with the starter switch at position ‘II’.
8. Seat heaters
*
For further information on front and rear seat 
heaters, please refer to ‘SEAT HEATERS*’, 
page 91’. 
						

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USING YOUR HEATER
Fresh air enters the heater unit through the 
grille in front of the windscreen and stale air is 
drawn out through vents in the rear of the 
vehicle. 
The following examples of basic heater settings 
are intended as a general guide; the air 
distribution, temperature and blower controls 
can then be further adjusted to suit your 
comfort requirements. Always remember that 
full heating is not available until the engine has 
reached its normal operating temperature.
Maximum heating
Set the temperature control to maximum and 
the air conditioning air distribution control to 
‘AUTO’, with the blower at the slowest speed 
(position 1) until the temperature gauge 
indicates that the engine is warming up - the 
blower speed can then be increased. Set the 
centre face ventilation temperature control fully 
towards the red indicator.
Demisting/defrosting
Switch on the air conditioning and the screen 
heaters, then set the temperature and blower 
controls to maximum. Set the air conditioning 
air distribution control to ‘all air to windscreen’, 
to obtain the maximum flow of heated air from 
the windscreen and side window vents. When 
defrosting, switching on air recirculation will 
help, but remember to switch off air 
recirculation as soon as defrosting has 
completed, to avoid windscreen misting.Maximum ventilation
Set the temperature control to your preferred 
interior temperature. Switch on the air 
conditioning and select air recirculation. Set the 
air distribution control set to ‘Air to face vents’. 
Ensure the face level vents are open and set the 
centre face vent temperature control fully 
towards the blue indicator. Adjust the blower 
speed to maximum.
Opening a window or the sunroof may improve 
ventilation. Remember; do not open a window 
or the sunroof, if the air conditioning is 
operating.
Auto cold start
In winter conditions, the Auto cold start 
function can be used to automatically maximise 
interior comfort levels.
To enable the function, turn the air conditioning 
air distribution control to ‘AUTO’. 
						

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FULLY AUTOMATIC AIR CONDITIONING
The air conditioning system features automatic 
temperature and air distribution control, which 
is programmed to maintain optimum levels of 
comfort within the vehicle in all but the most 
severe climatic conditions.
While the controls can be adjusted manually to 
satisfy individual requirements, allowing the 
system to function automatically (in Auto 
mode) is by far the simplest method of 
operation for the owner and is preferable in 
most operating conditions. 
1. Auto mode 
In Auto mode, air conditioning, air distribution, 
blower speeds and air recirculation are adjusted 
automatically to achieve and then maintain the 
desired driving environment. Both the air distribution and blower controls 
can be operated independently to override the 
automatic setting. In this case, the appropriate 
indicator light in the ‘AUTO’ switch extinguishes 
(the circular light represents the blower, the 
rectangular light represents air distribution). 
Press ‘AUTO’ again to re-establish automatic 
operation.
NOTE: If the air distribution and blower controls 
are operated independently, the system may 
not be able to achieve or maintain the required 
temperature settings. 
2. Front seat heaters
*
Press once to operate at a high 
level, press twice to heat the seats 
at a lower level. For further 
information concerning the operation of both 
front and rear seat heaters, please refer to 
‘SEAT HEATERS*’, page 91.
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•Press ‘AUTO’ (1) for fully automatic 
operation (both indicator lights in the 
switch illuminate).
•Rotate the temperature controls (5) to 
select the required temperature.
•Let the automatic temperature control 
system do the rest. 
						

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3. Defrost mode
If the windscreen is misting or 
covered in ice, press to activate the 
automatic defrost programme; the 
system will immediately direct its output to 
achieve maximum screen clearing by:
•setting the blower speed and temperature to 
maximum.
•distributing air flow to the screen only.
•deactivating the rear blower.
•deactivating air recirculation.
In addition, the rear and front screen heaters 
will be switched on (or their timed operating 
cycle will recommence if they are already 
switched on).
Press the button a second time (or select 
‘AUTO’ or any air distribution control) to leave 
the Defrost mode.
4. Maximum air conditioning
This mode automatically activates 
the air conditioning and air 
recirculation, and sets the blower 
speed at maximum and the air distribution to 
the face level vents. This mode overrides the 
current temperature settings. 
4. Engine off / heater function
During winter conditions, when the 
engine is turned off, press the 
button to provide heat to the cabin 
for a limited period of time (Max. 30 Mins.).5. Temperature controls
Rotate the controls to set the required 
temperature for the corresponding side of the 
passenger compartment (left hand switch for 
the left side of the vehicle, and right hand 
switch for the right side).
Temperatures above 28°C (82°F) and below 
16°C (61°F) cannot be set.
The temperatures on the control surrounds are 
relative, target temperatures only and are not 
reflective of any specific temperature measured 
within the vehicle interior. 
NOTE: The system will not achieve 
temperatures on the passenger side of the 
vehicle that are more than 5°C (9°F) greater or 
less than the temperature set for the drivers 
side. 
6. Blower control
Rotate clockwise to increase and anti-clockwise 
to decrease airflow from the vents. 
7. Air distribution control
Press the appropriate button to select the 
desired distribution setting: 
Foot level vents
Face level vents
Windscreen and side window vents
More than one setting can be selected at once, 
to get the desired distribution. 
						

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8. Air conditioning control
With the engine running, press the 
button to manually activate the air 
conditioning, or to switch off the 
air conditioning if it has been previously 
selected (manually or automatically).
9. Air recirculation
Air recirculation prohibits the entry 
of air from outside the vehicle, 
alternatively recirculating the air 
inside the vehicle instead. This is useful to 
prevent the entry of traffic fumes.
NOTE: On some vehicles, there is also a remote 
air recirculation button on the steering wheel. 
This button is a simple on/off button and does 
not incorporate the automatic recirculation 
feature (see ‘REMOTE AIR RECIRCULATION*’, 
page 92).
Press the button once to activate automatic 
recirculation. This feature automatically 
activates air recirculation when sensors fitted to 
the vehicle detect high levels of air pollution, 
therefore preventing the ingress of fumes into 
the vehicle (in a traffic queue, for example).
Press the button a second time to activate air 
recirculation. 
Press the button a third time to deactivate air 
recirculation.
Air recirculation also significantly influences 
the dehumidifying and cooling performance of 
the air-conditioning system. Therefore, in Auto 
mode, air recirculation is regulated 
automatically to enable the air-conditioning 
system to achieve its optimum performance.
NOTE: Prolonged recirculation may cause the 
windows to mist. 10. Heated front screen
Press to operate, the indicator light 
in the switch will illuminate 
whenever the screen heater is on.
11. Heated rear screen
Press to operate; the indicator light 
in the switch illuminates whenever 
the screen heater is on.
WARNING
DO NOT stick labels over the heating 
elements on the rear screen, and DO NOT 
scrape or use abrasive materials to clean the 
inside of the rear screen. 
						

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GENERAL NOTES
•For optimum operating efficiency, ensure all 
the air vents (including those in the rear of 
the vehicle) are open.
•For the automatic temperature control 
system to function efficiently, all windows 
(and the sunroof) should be closed, and the 
air intake vents free from ice, snow, leaves 
or other debris.
•In very humid conditions, slight screen 
misting may be experienced when the air 
conditioning system is turned on. This is a 
natural occurrence on most automotive air 
conditioning systems. It is not a fault and 
misting will clear after a few seconds once 
the air conditioning system is operating.
•The air conditioning compressor will not 
function unless the engine is running.
•Surplus water produced by the 
dehumidifying process is expelled from the 
system via drain tubes beneath the vehicle. 
This may result in a small pool of water 
forming on the road when the vehicle is 
stationary and is not a cause for concern.
REMOTE HEATING*
Some vehicles are equipped with a remote 
heater control, which can be used to pre-heat 
your vehicle on a cold day, from the comfort of 
your home or office.
Using the remote handset transmitter
The remote handset transmitter control has a 
range of approximately 330 ft (100 m) and for 
optimum performance, should be held 
vertically when operated. There is no need to 
point the antenna at the vehicle and avoid 
touching the antenna when operating the ‘on’ or 
‘off’ buttons.
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