2011 Seat Leon 5D service

82Cockpit
Coolant level* / temperature  (red)
The warning lamp lights up if the coolant temperature is too
high or if the coolant level is too low.
There is a fault if:
● The warning symbol does not go out again after a few seconds.
● The warning lamp lights up or flashes while the vehicle is moving, and
three acoustic warning signals ⇒ 
are emitted.
This means that either the coolant level is too low or the coolant tempera-
ture is too high.
Coolant temperature too high
The instrument panel displays the following message 1)
: CHECK COOLANT IN-
STRUCTION MANUAL ⇒  page 224.
First look at the coolant temperature gauge. The coolant temperature is too
high if the needle is over the warning area on the dial. Stop the vehicle,
switch the engine off and wait for it to cool down. Check the coolant level.
If the coolant level is correct, the overheating may be caused by a malfunc-
tion of the radiator fan. Check the radiator fan fuse and have it replaced if
necessary ⇒ page 250.
If the warning lamp lights up again after driving on for a short distance,
stop the vehicle and switch the engine off . Contact an Authorised Service
Centre or a specialised workshop.
Coolant level too low
The instrument panel displays the following message 1)
: STOP CHECK COOL-
ANT INSTRUCTION MANUAL.
First look at the coolant temperature gauge. If the needle is in the normal
range, top up with coolant at the earliest opportunity ⇒ 
.
WARNING
● If your vehicle is immobilised for technical reasons, move it to a safe
distance from traffic. Turn the engine off, turn the hazard lights on and
place the warning triangle.
● Never open the bonnet if you can see or hear steam or coolant escap-
ing from the engine compartment. Risk of scalding. Wait until you can no
longer see or hear escaping steam or coolant.
● The engine compartment is a dangerous area! Before carrying out any
work in the engine compartment, switch off the engine and allow it to
cool down. Always note the corresponding warnings ⇒ page 217.

Coolant temperature  (blue)
This lamp lights up when the coolant is below approximately 45°C. When it
exceeds this temperature the lamp turns off. 
Rear fog light 
This warning lamp lights up when the rear fog light is switched on . For
further information see ⇒ page 115. 
1)
Depending on the version of the model.

83
Cockpit
Turn signals  
The indicator lamp flashes when the turn signals are in op-
eration.
Depending on which turn signal is operating, either the left  or right 
turn signal lamp flashes. Both indicator lamps will flash at the same time
when the hazard warning lights are switched on.
If any of both turn signals fails, the indicator lamp will start flashing twice
faster than normal.
For further information on the turn signals, please see ⇒ page 122. 
Engine management* 
This warning lamp monitors the engine management sys-
tem for petrol engines.
The warning lamp  (Electronic Power Control) lights up when the ignition
is switched on to show that the lamp is working properly. It should go out
once the engine is started.
If there is a fault in the electronic engine management system while you are
driving, this warning lamp will light up. Stop the vehicle and seek technical
assistance. Glow plug system / engine fault

The warning lamp lights up to show that the glow plugs are
preheating. It flashes if there is an engine fault.
Warning lamp  is lit
The warning lamp  lights up while the glow plugs are preheating. When
the warning lamp goes off, the engine should be started straight away.
Warning lamp  flashes
If a fault develops in the engine management system while you are driving,
the glow plug lamp will flash . Take the vehicle to an Authorised Service
Centre as soon as possible and have the engine checked. 
Main beam headlights 
This warning lamp lights up when the main beams are on.
The warning lamp  is switched on once main beams are on or once the
headlight flasher is operating.
For further information see ⇒ page 122. 
Soot accumulation in the diesel engine particulate filter *

If the warning lamp  lights up you should help the filter clean itself by
driving in the appropriate manner. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

103
Unlocking and locking
Keys
Set of keys
The set of keys includes a remote control, a key without a re-
mote control and a plastic key tab*
Fig. 61 Set of keys
The set of keys belonging to your vehicle consists of the following items:
● one remote control key ⇒ fig. 61 A
with folding key bit,
● a key without remote control B,
● a plastic key tab* C.
Duplicate keys
If you need a replacement key, go to an Authorised Service Centre with your
vehicle identification number.
WARNING
● An incorrect use of the keys can cause serious injuries.
● Never leave children or disabled persons in the vehicle. In case of
emergency, they may not be able to leave the vehicle or manage on their
own.
● An uncontrolled use of the key could start the engine or activate any
electric equipment (e.g. electric windows), causing risk of accident. The
doors can be locked using the remote control key. This could make the
aid difficult in an emergency situation.
● Never forget the keys inside the vehicle. An unauthorised use of your
vehicle could result in injury, damage or theft. Always take the key with
you when you leave the vehicle.
● Never remove the key from the ignition if the vehicle is in motion.
Otherwise, the steering could suddenly block and it would be impossible
to steer the vehicle.
CAUTION
There are electronic components in the remote control key. Avoid wetting
and hitting the keys 
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105
Unlocking and locking
WARNING
● An improper use of the key can cause serious injuries.
● Never leave children or disabled persons in the vehicle. In case of
emergency, they may not be able to leave the vehicle or manage on their
own.
● Never forget the keys inside the vehicle. Otherwise, this could result
in serious injuries, accidents or even the theft of your vehicle. Always
take the key with you when you leave the vehicle.
● An uncontrolled use of the key could start the engine or activate any
electric equipment (e.g. electric windows), causing risk of accident. The
vehicle can be locked when using the remote control key. This could com-
plicate the aid in case of emergency.
Note
● The remote control can be programmed by means of pressing the un-
locking button once; as a result, only the driver door will unlock. When the
button is pressed once more, all doors and the tailgate will be unlocked.
● The remote control functions only when you are in range ⇒ fig. 63 (red
area).
● If the vehicle is unlocked using the 

1 button, it will lock again auto-
matically if any of the doors or the tailgate are not opened within 30 sec-
onds after unlocking it. This function prevents the vehicle from remaining
unlocked if the unlock button is pressed by mistake.
● If the vehicle cannot be opened and closed using the remote control,
the remote control key will have to be re-synchronised ⇒ page 105.
Changing the battery
If the battery indicator does not flash when the buttons are pushed, the bat-
tery must be replaced.
CAUTION
The use of inappropriate batteries may damage the radio frequency remote
control. For this reason, always replace the dead battery with another of the
same size and power.
For the sake of the environment
Used batteries must be disposed of at an appropriate waste facility or
through an authorised service, given that their components can affect the
environment. 
Synchronising the remote control key
If it is not possible to unlock or lock the door with the remote
control, it should be re-synchronised.
– Press the 
⇒ fig. 62 button on the remote control.
– Then close the vehicle using the key bit within one minute.
It is possible that the vehicle could no longer be opened and closed with
the remote control if the button 
is repeatedly pressed outside of the ef-
fective range of the radio frequency remote control. The remote control key
will have to be resynchronised.
Spare remote control keys are available in your Authorised Service Centres,
where they must be matched to the locking system.
Up to eight remote control keys can be used. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

111
Unlocking and locking
Note
If the window is not able to close because it is stiff or because of an ob-
struction, the window will automatically open again ⇒ page 111. If this
happens, check why the window could not be closed before attempting to
close it again. 
One-touch opening and closing
One-touch opening and closing means you do not have to
hold down the button.
One-touch closing
– Pull up the window button briefly up to the second position. The
window closes fully.
One-touch opening
– Push down the window button briefly up to the second position.
The window opens fully.
Reset the automatic closing function for the front side windows
and the automatic opening for all windows
– Close all windows.
– Use the key to lock the vehicle from outside and hold the key in
the lock position for at least one second. The one-touch func-
tion is now ready for operation.
The buttons ⇒ fig. 67 1
and 2 have two levels for opening the window
and two for closing it. This makes it easier to open and close windows to the
desired position. One-touch closing does not work when the ignition has been switched off,
even if the key is in the ignition.
The automatic open and close function will not work if the battery has been
temporarily disconnected, or if the battery is flat. The function then has to
be reactivated.
The one-touch function and roll-back function will not work if there is a mal-
function in the electric windows. Contact an Authorised Service Centre.

Roll-back function
The windows have a roll-back function. This reduces the risk
of injuries when the windows are closing.
● If a window is obstructed when closing automatically, the window stops
at this point and lowers immediately ⇒ 
.
● If this happens, check immediately (within 10 seconds) why the window
could not be closed before attempting to close it again. After 10 seconds
the normal automatic function resumes.
● If the window is still obstructed, the window will stop at this point.
● If there is no obvious reason why the window cannot be closed, try to
close it again within 5 seconds.
If you wait longer than 5 - 10 seconds, the window will open fully when you
operate one of the buttons. One-touch closing is reactivated.
The one-touch function and roll-back function will not work if there is a mal-
function in the electric windows. Contact an Authorised Service Centre. 
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127
Lights and visibility
● When the “intermittent wipe function” is on, the intervals are directly
proportional to the speed. This way, the higher the vehicle speed the short-
er the intervals.
● The wiper will try to wipe away any obstacles that are on the windscreen.
The wiper will stop moving if the obstacle blocks its path. Remove the ob-
stacle and switch the wiper back on again.
● Before removing any objects that may be trapped in the side areas of
the windscreen, always move the wiper arms to the service position (hori-
zontal).
● The heat output of the heated jets is controlled automatically when the
ignition is switched on, depending upon the outside temperature. 
Rain sensor*
The rain sensor controls the frequency of the windscreen
wiper intervals, depending on the amount of rain.
Fig. 82 Rain sensor*
Fig. 83 Windscreen wip-
er lever
Switching on the rain sensor
– Move the windscreen wiper lever into position 1
⇒ fig. 83.
– Move the control A
to the left or right to set the sensitivity of
the rain sensor. Control to the right: highly sensitive. Control to
the left: less sensitive.
The rain sensor is part of the interval wipe function. You will have to switch
the rain sensor back on if you switch off the ignition. This is done by switch-
ing the wiper intermittent function off and back on.
Note
● Do not put stickers on the windscreen in front of the sensor. This may
cause sensor disruption or faults. 
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155
Air conditioning
When the AC
button is off (LED off), the air conditioning system is off.
When the AC
button is off, the air conditioning system is switched off to
save fuel. The temperature continues to self-regulate. The set temperature
can then only be reached if it is higher than the outside temperature.
Driver and passenger temperature control
The DUAL
button controls the synchronisation of the 2 Climatronic climate
zones.
When the DUAL
button is on (LED lit), the climate zone of the Climatronic is
personalised, for example: Driver side temperature 22°C and passenger
side temperature 23°C.
When the DUAL
button is off (LED off), the climate zone of the Climatronic is
synchronised, for example: Driver side temperature 22°C and passenger
side temperature 22°C.
If the DUAL
button is off and the passenger side temperature is changed,
the function is automatically activated. 
Air recirculation mode
Air recirculation mode prevents fumes or unpleasant smells
from coming from the outside. – Press the button 
⇒ fig. 113
2 to switch air recirculation
mode on or off. It is switched on if the following symbol appears
in the display .
Air recirculation mode prevents strong odours in the ambient air from enter-
ing the vehicle interior, for example when passing through a tunnel or in a
traffic jam. With low outside temperatures, the air recirculation increases the effective-
ness of the heating system by heating the air inside the vehicle rather than
the air from outside.
With high outside temperatures, the air recirculation increases the effective-
ness of the air conditioning system by cooling the air inside the vehicle
rather than the ambient air.
If the windscreen air output is on and the air recirculation mode is pressed,
this remains active. When the recirculation mode is on, if the air distribution
towards the windscreen mode is selected, the recirculation mode is deacti-
vated. For safety reasons, the air recirculation mode should not be connec-
ted.
WARNING
In air recirculation mode, no cold air from the outside enters the vehicle
interior. If the air conditioning system is switched off, the windows can
quickly mist over. Therefore, never leave the air recirculation mode
switched on for a long time (risk of accident).

General notes
Pollution filter
The pollution filter (a combined particulate filter and active carbon filter)
serves as a barrier against impurities in the outside air, including dust and
pollen.
For the air conditioner to work with maximum efficiency, the pollution filter
must be replaced at the intervals specified in the Service Schedule.
If the filter loses efficiency prematurely due to use in areas reaching very
high pollution levels, the pollen filter must be changed more frequently
than stated in the Service Schedule. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

156Air conditioning
Air conditioner
When the air conditioning system is switched on, not only the temperature,
but also the air humidity in the vehicle interior is reduced. This improves
comfort for the vehicle occupants and prevents misting of the windows
when the ambient air humidity is high.
If the air conditioning system cannot be switched on this may be caused by
the following reasons:
● The engine is not running.
● The AC
button is disconnected.
● The outside temperature is below +3°C.
● The air conditioning system compressor has been temporarily switched
off because the engine coolant temperature is too high.
● The air conditioner fuse is faulty.
● Another fault in the vehicle. Have the air conditioner checked by a speci-
alised workshop.
CAUTION
● If you suspect that the air conditioner is damaged, switch it off with but-
ton AC
to prevent further damage and have it checked by a specialised
workshop.
● Repairs to the air conditioner require specialist knowledge and special
tools. Therefore, we recommend you to take the vehicle to a specialised
workshop.
Note
● If the humidity and temperature outside the vehicle are high, condensa-
tion can drip off the evaporator in the cooling system and so forming a pud-
dle underneath the vehicle. This is completely normal and there is no need
to suspect a leak.
● Keep the air intake slots in front of the windscreen free of snow, ice and
leaves to ensure heating and cooling are not impaired, and to prevent the
windows from misting over. ●
The air from the vents flows through the vehicle interior and is extracted
by slots designed for this purpose. Therefore, do not cover these slots with
items of clothing or other objects.
● The air conditioner operates most effectively with the windows and the
sliding/tilting sunroof* closed. However, if the temperature inside the vehi-
cle is excessive because of the sun, the air inside can be cooled faster by
opening the windows for a short time.
● Do not smoke while air recirculation mode is on, as smoke drawn into
the air conditioning system leaves a residue on the evaporator, producing a
permanent unpleasant odour.
● It is advisable to connect the air conditioning at least once a month, to
lubricate the system gaskets and prevent leaks. If a decrease in the cooling
capacity is detected, an Authorised Service Centre should be consulted to
check the system. 