2012 Seat Leon 5D key battery

66Instruments and warning/control lamps
Reading a service notification
With the ignition switched on, the engine off and the vehicle at a standstill,
the current service notification can be read:
Press and hold the button ⇒ Fig. 36 4
for more than 5 seconds to consult
the service message.
When the service date has past , a minus sign is displayed in front of the
number of kilometres or days. In vehicles with text messages the following
is displayed: Service --- km (miles) or --- days ago .
The time can also be set via the 
key and Setup function button in the
Easy Connect system ⇒ page 79.
The service interval display is reset
If the service was not carried out by a SEAT dealership, the display can be
reset as follows:
● To reset the service interval display, turn the ignition off and press and
hold the button ⇒ Fig. 36 4
.
● Switch the ignition back on.
● Release the button 4
and press the button 4 again for the next 20
seconds.
Note
● The service message disappears after a few seconds, when the engine is
started or when OK/RESET
is pressed on the windscreen wiper lever, or OKon the multifunction steering wheel.
●
In vehicles with the LongLife system in which the battery has been dis-
connected for a long period of time, it is not possible to calculate the date
of the next service. Therefore the service interval display may not be correct.
In this case, please check the maximum permitted service intervals ⇒ Book-
let Maintenance Programme. Rev counter
The rev counter indicates the number of engine revolutions
per minute.
Together with the gear-change indicator, the rev counter offers you the pos-
sibility of using the engine of your vehicle at a suitable speed.
The start of the red zone on the dial indicates the maximum engine speed
which may be used briefly when the engine is warm and after it has been
run in properly. Before reaching this range, you should change to a higher
gear for vehicles with a manual gearbox or for automatic gearboxes put the
selector lever in “D” or take your foot off the accelerator pedal.
We recommend that you avoid high revs and that you follow the recommen-
dations on the gear-change indicator. Consult the additional information in
⇒  page 68, Gear-change indicator.
CAUTION
Never allow the rev counter needle 1 ⇒ Fig. 36 to go into the red zone on
the scale for more than a very brief period, otherwise, there is a risk of en-
gine damage.
For the sake of the environment
Changing up a gear early will help you to save fuel and minimise engine
noise. 

88Opening and closing
Vehicle key
Fig. 43 Vehicle key
Fig. 44 Vehicle key with
alarm button
Vehicle key
With the vehicle key the vehicle may be locked or unlocked remotely
⇒  page 86.
The vehicle key includes an emitter and battery. The receiver is in the interi-
or of the vehicle. The range of the vehicle key with remote control and new
battery is several metres around the vehicle. If it is not possible to open or close the vehicle using the remote control key,
this should be re-synchronised
⇒ page 90 or the battery changed
⇒ page 90.
Different keys belonging to the vehicle may be used.
Unfolding and folding the key shaft
Press button 1
⇒ Fig. 43 or ⇒ 
Fig. 44 to unlock and unfold the key shaft.
To fold the shaft away, press button 1
and fold the key shaft in until it
locks in place.
Alarm button 1)
Only press alarm button 2
in the event of an emergency! When the alarm
button is pressed, the vehicle horn is heard and the turn signals are switch-
ed on for a short time. When the alarm button is pressed again, the alarm is
switched off.
Replacing a key
To obtain a spare key and other vehicle keys, the vehicle chassis number is
required.
Each new key contains a microchip which must be coded with the data from
the vehicle electronic immobiliser. A vehicle key will not work if it does not
contain microchip or the microchip has not been encoded. This is also true
for keys which are specially cut for the vehicle.
The vehicle keys or new spare keys can be obtained from a SEAT Official
Service, a specialised workshop or an approved key service qualified to cre-
ate this kind of key.
New keys or spare keys must be synchronised before use ⇒ page 90.
1)
This system is only available in some markets

89
Opening and closing
CAUTION
All of the vehicle keys contain electronic components. Protect the vehicle
keys from damage, impacts and humidity.
Note
● Only use the key button when you require the corresponding function.
Pushing the button unnecessarily could accidentally unlock the vehicle or
trigger the alarm. It is also possible even when you are outside the radius of
action.
● Key operation can be greatly influenced by overlapping radio signals
close the vehicle working in the same range of frequencies, for example, ra-
dio transmitters, mobile telephones.
● Obstacles between the remote control and the vehicle, bad weather con-
ditions and discharged batteries can considerably reduce the range of the
remote control.
● If buttons ⇒ Fig. 43 or ⇒  Fig. 44 on the vehicle key, or one of the central
locking buttons ⇒ page 93 are pressed repeatedly in short succession,
the central locking is briefly switched off to protect against overloading. The
vehicle is then unlocked. Lock the vehicle if necessary. Control lamp on the vehicle key
Fig. 45 Control lamp on
the vehicle key
When a button on the vehicle key is pressed, the control lamp flashes
⇒ Fig. 45 (arrow) once briefly. If the button is pressed and held down, the
lamp flashes several times, for example: for the convenience opening func-
tion.
If the vehicle key control lamp does not light up when the button is pressed,
replace the battery ⇒ page 90. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

90Opening and closing
Changing the battery
Fig. 46 Vehicle key:
opening the battery com-
partment
Fig. 47 Vehicle key:
removing the battery
SEAT recommends you ask a specialised workshop to replace the battery.
The battery is located to the rear of the vehicle key, under a cover.
Changing the battery
● Unfold the vehicle key shaft
⇒ page 88.
● Remove the cover from the back of the vehicle key
⇒ Fig. 46 in the direc-
tion of the arrow ⇒ 
.
● Extract the battery from the compartment using a suitable thin object
⇒  Fig. 47. ●
Place the new battery in the compartment as shown ⇒ Fig. 47, pressing
in the opposite direction to that shown by the arrow ⇒ 
.
● Fit the cover as shown ⇒ Fig. 46, pressing it onto the vehicle key casing
in the opposite direction to that shown by the arrow until it clicks into place.
CAUTION
● If the battery is not changed correctly, the vehicle key may be damaged.
● Use of unsuitable batteries may damage the vehicle key. For this reason,
always replace the dead battery with another of the same voltage, size and
specifications.
● When fitting the battery, check that the polarity is correct.
For the sake of the environment
Please dispose of your used batteries correctly and with respect for the envi-
ronment. 
Synchronising the vehicle key
If the button  is pressed frequently outside of the vehicle range, it is pos-
sible that the vehicle can no longer be locked or unlocked using the key. In
this case, the key must be resynchronised as described below:
● Unfold the vehicle key shaft
⇒ page 88.
● If necessary, remove the cover from the driver door lever
⇒ page 97.
● Press the button 
on the vehicle key. For this, it must remain with the
vehicle.
● Open the vehicle within one minute using the key shift. The key has
been synchronised.
● If necessary, fit the cap. 

94Opening and closing
● When the door is mechanically unlocked using the vehicle key without
turning the ignition within the following 15 seconds.
● A door is opened.
● The bonnet is opened.
● The rear lid is opened.
● When the ignition is switched on with a non-authorised key.
● When the vehicle battery is disconnected.
● Movement inside the vehicle (in vehicles with interior monitoring
⇒ page 95).
● When the vehicle is towed (in vehicles with anti-tow system
⇒ page 95).
● When the vehicle is raised (in vehicles with anti-tow system
⇒ page 95).
● When the vehicle is transported on a ferry or by rail (vehicles with an an-
ti-tow system or vehicle interior monitoring ⇒ page 95).
● When a trailer connected to the anti-theft alarm system is disconnected.
How to turn OFF the alarm
Unlock the vehicle with the unlocking button on the key or turn on the igni-
tion with a valid key.
Note
● The alarm will be triggered once more when anybody enters the same
zone of surveillance or any other zone. If, for example, after opening a door,
the rear lid is also opened.
● The anti-theft alarm 
is not activated when the vehicle is locked from
the inside using the central locking button. ●
If the driver door is unlocked mechanically with the key, only the driver
door is unlocked, the rest of the doors remain locked. Only when the igni-
tion has been turned on will the other doors be available - but not unlocked
- and the central lock button activated.
● If the vehicle battery is run down or flat then the anti-theft alarm will not
operate correctly. 
Vehicle interior monitoring and anti-tow system*
Monitoring or control function incorporated in the anti-theft
alarm* which detects unauthorized vehicle entry by means
of ultrasound.
Activation
– It is automatically switched on when the anti-theft alarm is acti-
vated.
Deactivation
– Open the vehicle with the key, either mechanically 1)
or by press-
ing the 
button on the remote control.
– Press the button 
on the remote control twice. The volumetric
sensor and tilt sensors will be deactivated. The alarm system re-
mains activated.
The vehicle interior monitoring and the anti-tow system are automatically
switched on again next time the vehicle is locked. 
1)
The time period from when the door is opened until the key is inserted in the contact
should not exceed 15 sec., otherwise the alarm will be triggered.

111
Lights and visibility
7. Always take the vehicle key with you when you leave the vehi- cle.
Switch on the hazard warning lights to warn other road users, for example:
● reaching the tail end of a traffic jam,
● there is an emergency
● your vehicle breaks down due to a technical fault,
● you are towing another vehicle or your vehicle is being towed.
All turn signals flash simultaneously when the hazard warning lights are
switched on. The two turn signal turn signal lamps   and the turn signal
lamp in the switch  will flash at the same time. The hazard warning lights
also work when the ignition is switched off.
Emergency braking warning
If the vehicle is braked suddenly and continuously at a speed of more than
80 km/h (50 mph), the brake light flashes several times per second to warn
vehicles driving behind. If you continue braking, the hazard warning lights
will come on automatically when the vehicle comes to a standstill. They
switch off automatically when the vehicle starts to move again.
WARNING
● The risk of an accident increases if your vehicle breaks down. Always
use the hazard warning lights and a warning triangle to draw the atten-
tion of other road users to your stationary vehicle.
● Never park where the catalytic converter could come into contact with
inflammable materials under the vehicle, for example dry grass or spilt
petrol. This could start a fire!
Note
● The battery will run down if the hazard warning lights are left on for a
long time, even if the ignition is switched off.
● The use of the hazard warning lights described here is subject to the rel-
evant statutory requirements. 
Main beam assist*
Main beam assist (Light Assist)
The main beam assist operates, within the limits of the system and depend-
ing on the environmental and traffic conditions, as of a speed of 60 km/h
(40 mph) when it switches on automatically, and is then deactivated again
below 30 km/h (20 mph) ⇒ 
. This is managed via a camera situated on
the base of the interior rear vision mirror.
The main beam assist generally detects illuminated areas and deactivates
the main beam when passing through a town, for example. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

115
Lights and visibility
Interior and reading lights 1)
Button/
SwitchFunction
Switches interior lights off.
Switches interior lights on.

Switches door contact control on (central position).
The interior lights come on automatically when the vehicle is
unlocked, a door is opened or the key is removed from the ig-
nition.
The lights go off a few seconds after all the doors are closed,
the vehicle is locked or the ignition is switched on.
Turning the reading light on and off
Glove compartment and luggage compartment lighting
When opening and closing the glove compartment on the front passenger
side and the rear lid, the respective light will automatically switch on and
off.
Footwell lighting*
The lights in the footwell area below the dash (driver and front passenger
sides) will switch on when the doors are opened and will decrease in inten-
sity while driving. The intensity of these lights can be adjusted using the ra-
dio menu (see Easy Connect > Adjusting Lighting > Interior lighting⇒ page 81).
Ambient light*
The ambient light in the door panel changes colour (white or red) depend-
ing on the driving mode. The intensity of these lights can be adjusted using the radio menu (see Easy Connect > Adjusting Lights > Interior lighting
⇒  page 81).
Note
The reading lights switch off when the vehicle is locked using a key or after
several minutes if the key is removed from the ignition. This prevents the
battery from discharging. 
Sun blind Introduction
WARNING
Folded sun blinds can reduce visibility.
● Always store sun blinds and visors in their housing when not in use.

1)
Depending on the level of equipment fitted in the vehicle, LEDs can be used for the follow-
ing interior lights: front courtesy light, rear courtesy light, footwell light and sun visor light.
Safety FirstOperating instructionsPractical TipsTechnical specifications

145
Driving
Start-Stop System*
If the vehicle is stopped and the Start-Stop system* switches off the engine,
the ignition remains switched on.
Automatic gearbox: Before leaving the vehicle, make sure that the ignition
is switched off and the selector lever is in position P.
Driver messages on the instrument panel display
Press the clutch This message appears on vehicles with a manual gearbox if the driver tries
to start the engine without having the clutch pedal pressed. The engine will
only start if you press the clutch pedal.
Press the brake
This message appears on vehicles with an automatic gearbox if the driver
tries to start the engine without having the brake pedal pressed.
Select N or P
This message appears if you try to start or stop the engine when the selec-
tor lever of the automatic gearbox is not in position P or N. The engine can
only start or stop in these positions.
Engage position P; the vehicle can move; doors can only close in position P. For safety reasons, this driver message appears and an audible warning
sounds if the selector lever of the automatic gearbox is not in position P af-
ter you switch off the ignition. Otherwise the vehicle could move.
Gear change: selector lever in the drive position! This driver message is displayed and a buzzer is sounded when the selector
lever is not in the position P when the driver door is opened. Put the selec-
tor lever in position P; otherwise the vehicle can roll away.
Ignition is switched onThis driver message is displayed and a buzzer is sounded when the driver
door is opened with the ignition switched on.
WARNING
● Never run the engine in confined spaces, as the exhaust gases are
poisonous.
● Never remove the key from the ignition if the vehicle is in motion.
Otherwise, the steering could suddenly lock, making it impossible to
steer the vehicle: risk of accident!
● Always take the key with you when you leave the vehicle. This is par-
ticularly important if there are children in the vehicle, as they might oth-
erwise be able to start the engine or use power-operated equipment (e.g.
the electric windows), which could cause injuries.
CAUTION
Avoid high engine speeds, full throttle and extreme load conditions until
the engine has reached its normal operating temperature, otherwise this
can damage the engine.
For the sake of the environment
Do not warm up the engine by running it with the car stationary. You should
drive off as soon as you start the engine. This will help avoid unnecessary
exhaust emissions.
Note
● If it is difficult to turn the ignition key to the position 1, turn the steer-
ing wheel to both sides to release the steering lock.
● When starting from cold, the engine may be a little noisy for the first few
seconds until oil pressure has built up in the hydraulic valve lifters. This is
quite normal, and no cause for concern.
● If the vehicle battery is disconnected and reconnected, the key must re-
main in the position 1
for around 5 seconds before starting up.
● Vehicles with automatic gearbox: After switching off the ignition, you
can only remove the ignition key if the selector lever is in position “P” (park-
ing lock). Next, the selector lever is locked. 
Safety FirstOperating instructionsPractical TipsTechnical specifications