2017 Seat Leon 5D change key battery

Emergencies
they should be changed if they are damaged,
or c l
e
aned if they are dirty ››› .
Dam ag
ed w
iper blades should be replaced
immediately. These are available from quali-
fied workshops. WARNING
Worn or dirty windscreen wiper blades reduce
vi s

ibility and increase the risk of accident
and serious injury.
● Always replace damaged or worn wind-
scr
een wiper blades or blades that no longer
clean the windscreen properly. CAUTION
● Damag ed or dir

ty windscreen wipers could
scratch the glass.
● If products containing solvents, rough
spong
es or sharp objects are used to clean
the blades, the graphite layer will be dam-
aged.
● Never use fuel, nail varnish remover, paint
thinner or simil
ar products to clean the win-
dows.
● In icy conditions, always check that the
wiper bl
ades are not frozen to the glass be-
fore using the wipers. In cold weather, it may
help to leave the vehicle parked with the wip-
ers in service position ›››
 page 72. CAUTION
● To pr ev

ent damage to the bonnet and the
wiper arms, only leave them in the service
position.
● Before driving, always lower the wiper
arms. Towing or tow-starting
Genera l

information Read the additional information carefully
› ›
›

 page 69.
Tow-starting means starting the engine of
the vehicle while another pulls it.
Towing means one vehicle pulling another
that is not roadworthy.
If the vehicle comes with the Keyless Access
system, towing is only allowed with the igni-
tion on!
The vehicle battery drains if the vehicle is
towed with the engine switched off and the
ignition connected. Depending on the battery
charge status, the drop in voltage may be so
large, even after just a few minutes, that no
electrical device in the vehicle may work e.g.
the hazard warning lights. In vehicles with
the Keyless Access system, the steering
wheel could lock up. WARNING
If the vehicle has no electrical power, the
brak e light

s, turn signals and all other lights
will no longer function. Do not have the vehi-
cle towed away. Failure to follow this instruc-
tion could result in an accident. WARNING
The risk of accidents is high when tow-start-
ing, f or e

xample, the towed vehicle can easily
be driven into the towing vehicle. CAUTION
If there is no oil in the gearbox or no lubricant
in the autom atic

transmission the car may
only be towed with the driven wheels lifted
clear of the road, or transported on a special
car transporter or trailer. CAUTION
Do not tow a vehicle for more than 50 m in at-
tempt t

o start it. There is risk of damage to
the catalytic converter. Note
● Ple a

se observe related legal requirements.
● Switch on the hazard warning lights of both
vehicl
es. However, observe any regulations
to the contrary. 98

Operation
Note
● Never l e
ave any valuable items in the vehi-
cle unattended. Even a locked vehicle is not a
safe.
● If the diode on the driver door sill lights up
for about 30 sec
onds when the vehicle is
locked, the central locking system or anti-
theft alarm* is not working properly. You
should have the fault repaired at a SEAT Offi-
cial Service or specialised workshop.
● The vehicle interior monitoring of the anti-
theft a
larm* system will only function as in-
tended if the windows and the sunroof* are
closed. Car key
Fig. 132
Vehicle key Fig. 133
Vehicle key with alarm button. Vehicle key
W
ith the
v

ehicle key the vehicle may be
locked or unlocked remotely ››› page 125.
The vehicle key includes an emitter and bat-
tery. The receiver is in the interior of the vehi-
cle. 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 vehi-
cle using the remote control key, this should
be re-synchronised ››› page 132 or the bat-
tery changed ››› page 132.
Different keys belonging to the vehicle may
be used.
Control lamp on the vehicle key
When a button on the vehicle key is pressed,
the control lamp flashes ››› Fig. 132 (arrow)
once briefly, but if the button is held down for a longer period the control lamp flashes sev-
eral time

s, such as in convenience opening.
If the vehicle key control lamp does not light
up when the button is pressed, replace the
key's battery ››› page 132.
Unfolding and folding the key shaft
Press button 1
› ››
Fig. 132
or ›
›› Fig. 133 to
unlock and unfold the key shaft.
To fold the shaft away, press button 1 and
f o
l

d the key shaft in until it locks in place.
Alarm button*
Only press alarm button 2 in the event of an
emer g
ency!

When the alarm button is press-
ed, the vehicle horn is heard and the turn sig-
nals are switched on for a short time. When
the alarm button is pressed again, the alarm
is switched off.
Spare 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 a microchip or the
microchip has not been encoded. This is also
true for keys which are specially cut for the
vehicle.
126

Operation
necessary, remove the protective cover on
the driv er door h
andl
e ›››
 page 15 or
● Press the  button on the r
emote control
key for a second time within 2 seconds.
The flashing frequency of the diode in the
door sill immediately confirms the process.
Initially, the diode flashes in a fast sequence
for a brief period, then it stops for approxi-
mately 30 seconds and, lastly continues
flashing slowly.
Replacing the battery Fig. 137
Vehicle key: opening the battery
c omp
ar

tment. Fig. 138
Vehicle key: removing the battery. SEAT recommends you ask a specialised
w
ork
shop t

o replace the battery.
The battery is located to the rear of the vehi-
cle key, under a cover.
Changing the battery ● Unfold the vehicle key blade ›››
page 126.
● Remove the cover from the back of the ve-
hicle k
ey ››› Fig. 137 in the direction of the ar-
row ››› .
● Extract the battery from the compartment
u s
in

g a suitable thin object ››› Fig. 138.
● Place the new battery in the compartment
as sho
wn ››› Fig. 138, pressing in the oppo-
site direction to that shown by the arrow
››› .
● Fit the cover as shown ››
›
Fig. 137 , 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 b att

ery is not changed correctly, the
vehicle key may be damaged.
● Use of unsuitable batteries may damage
the vehic
le key. For this reason, always re-
place the dead battery with another of the
same voltage, size and specifications.
● When fitting the battery, check that the po-
larity i
s correct. For the sake of the environment
Please dispose of your used batteries correct-
ly and w ith r

espect for the environment. Synchronising the vehicle key
If the
 button is pressed frequently outside
of the

vehicle range, it is possible that the ve-
hicle can no longer be locked or unlocked us-
ing the key. In this case, the key must be re-
synchronised as described below:
● Unfold the vehicle key blade ›››

page 126.
● If necessary, remove the cover from the
driver door lev
er ›››
 page 15.
● Press the  button on the
vehicle key. For
this, it must remain with the vehicle.
● Open the vehicle within one minute using
the key b
lade. The key has been synchron-
ised.
● If necessary, fit the cap.
132

Lights and visibilitySetting 3Driver only, luggage compartment full
Driving with trailer and minimum draw-
bar load.
Dynamic headlight range control
The contr
o

l is not mounted in vehicles with
dynamic headlight range control. The head-
light range is automatically adjusted accord-
ing to the vehicle load status when they are
switched on. WARNING
Heavy objects in the vehicle may mean that
the hea dlight

s dazzle and distract other driv-
ers. This could result in a serious accident.
● Adjust the light beam to the vehicle load
stat
us so that it does not blind other drivers. Lighting of the instrument panel,
s
c
r

eens and controls Depending on the model, the lighting of the
in
s
trument

panel and controls can be adjus-
ted in the Easy Connect system, using the button and the SETTINGS
fu
nction b
utton
›››  page 33. With the ignition on and without light activa-
tion, the instrument

panel lighting remains
activated in daytime light conditions. The
lighting is reduced as the exterior light di-
minishes. In some cases, e.g. when driving
through a tunnel without the  function
active, the instrument panel lighting may
even switch off. The objective of this function
is to provide the driver with a visual indica-
tion that he or she should activate the dip-
ped beam.
Interior and reading lights 1) Read the additional information carefully
› ›
›

 page 32
Glove compartment and luggage compart-
ment lighting*
When opening and closing the glove com-
partment 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 de-
cre

ase in intensity while driving. This bright-
ness can be adjusted using the Easy Connect
system, by means of the  button and the
f u
nction b

utton SETTINGS > Lights >
Interior lighting ›››
 page 33).
Ambient light*
The ambient light lights up the area of the
centre console, the footwell area and, de-
pending on the version, the front door pan-
els.
The ambient lighting in the door panels may
change colour. Brightness and colour can be
adjusted using the Easy Connect system, by
means of the  button and the function
b utt
on

SETTINGS > Lights > Interior
lighting ›››
 page 33). Note
The reading lights switch off when the vehi-
cl e i

s locked using a key or after several mi-
nutes if the key is removed from the ignition.
This prevents the battery from discharging. 1)
Depending on the level of equipment fitted in the
vehic l

e, LEDs can be used for the following interior
lights: front courtesy light, rear courtesy light, foot-
well light, sun blind and glove compartment light. 147
Technical data
Advice
Operation
Emergencies
Safety

Driving
● The en gine t
urn
s off automatically.
Engine restart feature
If no valid key is detected inside the vehicle
after the engine stops, you will only have 5
seconds to restart it. A warning will display
on the dash panel screen.
After this interval, it will not be possible to
start the engine without a valid key inside
the vehicle.
Automatic deactivation of the ignition on ve-
hicles with the Start-Stop system
The ignition is switched off automatically
when the vehicle is stopped and the auto-
matic engine shutdown is active, if: ● The driver's seat belt is not fastened,
● the driver does not step on any pedal,
● the driver door is opened.
After aut
omatically turning off the ignition, if
the dipped beam  is on, the side light re-
mains on for approx. 30 minutes (if the bat-
tery is sufficiently charged). If the driver locks
the vehicle or manually turns off the light, the
side light goes out. WARNING
Any accidental movement of the vehicle could
re s

ult in serious injury. ●
When swit c

hing on the ignition, do not
press the brake or clutch pedal, otherwise
the engine could start immediately. WARNING
If vehicle keys are used negligently or with-
out due c ar

e, this may cause accidents and
serious injury.
● Never leave any key inside the vehicle
when exitin
g. Otherwise, a child or unauthor-
ised person could lock the vehicle, start the
engine or connect the ignition and, in this
way, operate electronic equipment (e.g. the
windows). Note
● Bef or

e leaving the vehicle, always discon-
nect the ignition manually and, if appropri-
ate, take into account the instructions on the
screen of the dash panel.
● If the vehicle is stationary for a long time
with the ignition on, the v
ehicle battery
might be discharged and it might not be pos-
sible to start the engine.
● In diesel vehicles, there may be a delay in
the engine st
arting if it requires preheating.
● If during the STOP phase you press the
STAR
T ENGINE STOP button, the ignition is
swit c
hed off and the button flashes.
● If the indication “Start-Stop system deacti-
vated:
Start the engine manually” is dis-
played on the dash panel display, the START ENGINE STOP button will blink. Starting the engine
3 Valid for vehicles: with starter button
StepStarting the engine with the starter
button
››› page 180.
1.Press and hold the brake pedal until step 5
is performed.
1a.In vehicles with a manual gearbox: press
and hold the clutch down until the engine
starts.
2.Put the gearbox lever in neutral or the selec-
tor lever in position P or N.
3.
Briefly press the starter button ››› Fig. 192
without pressing the accelerator. For the en-
gine to start there must be a valid key in the
vehicle.
After starting the engine, the light of the START ENGINE STOP
button changes to a fixed
light indicating that the engine has started.
4.
If the engine does not start, stop and wait for
approx. 1 minute before trying again. If nec-
essary, perform an emergency start
››› page 180.
5.Disconnect the parking brake when you are
about to start driving ››› page 183. WARNING
Never leave the vehicle with the engine run-
ning, e s

pecially if a gear or gear range is en-
gaged. The vehicle could then suddenly move
or something strange could happen that
would cause damage, fire or serious injury. » 181
Technical data
Advice
Operation
Emergencies
Safety

Checking and refilling levels
CAUTION
● Do not mi x
cleaning products recommen-
ded by SEAT with other products. This could
lead to flocculation and may block the wind-
screen washer jets.
● When topping up service fluids, make abso-
lutely c
ertain that you fill the fluids into the
correct reservoirs. Using the wrong fluids
could cause serious malfunctions and engine
damage!
● Not having windscreen wiper fluid reduces
vis
ibility through the windscreen, and leads
to loss of visibility in headlights in models
with headlight washer. Battery
Gener a
l

informationRead the additional information carefully
› ›
›

 page 61.
The battery is located in the engine compart-
ment and is almost maintenance-free. It is
checked as part of the Inspection Service.
Nevertheless, check the terminals are clean
and have the correct tightening torque, espe-
cially in summer and winter.
Disconnecting the battery
The battery should only be disconnected in
exceptional cases. When the battery is dis- connected, some of the vehicle's functions
are “los

t” (››› table on page 277). These
functions will require resetting after the bat-
tery is reconnected.
Deactivate the anti-theft alarm* before you
disconnect the battery Otherwise the alarm
will be triggered.
FunctionReprogramming
One-touch function of
the electric windows››› page 138, One-touch
opening and closing*.
Remote control key
If the vehicle does not re-
spond to the key, they
should be synchronised
››› page 132.
Digital clock››› page 116.
ESC warning lampAfter driving for a few me-
tres, the warning lamp goes
out again. If the vehicle is not used for long periods
The
v
ehic

le has a system for monitoring the
current consumption when the engine is left
unused for long periods of time ››› page 201.
Some functions, such as the interior lights, or
the remote door opening, may be temporarily
disabled to prevent the battery from running
flat. These functions will come back on as
soon as the ignition is switched on and the
engine started. Winter conditions
During the w

inter, the starting power may be
reduced, and if necessary, the battery should
be charged ››› in Important safety warn-
in g
s

for handling a vehicle battery on
page 278
Important safety warnings for han-
dling a v
ehicle battery All work on batteries requires specialist
kno
wl
edg

e. Please refer to a SEAT Official
Service or a workshop specialising in batter-
ies: risk of burns or exploding battery!
The battery must not be opened. Never try to
change the fluid level of the battery. Other-
wise explosive gas is released from the bat-
tery that could cause an explosion. 
Wear eye protection.

Battery acid is very corrosive and caustic. Wear
protective gloves and eye protection. In the event
of electrolyte splashes, rinse off with plenty of
water.

Fires, sparks, open flames and smoking are pro-
hibited.

The battery should only be charged in a well-ven-
tilated zone. Risk of explosion!

Keep children away from acid and batteries!»
277
Technical data
Advice
Operation
Emergencies
Safety

Advice
WARNING
● When rep airin
g or working on the electrical
system, proceed as follows:
–1. Remove the key from the ignition. The
negative cable on the battery must be
disconnected.
– 2. When the repair is finished, reconnect
the negative pole of the battery.
● Switch off all electrical devices before re-
connecting the b
attery. Reconnect first the
positive cable and then the negative cable.
Never reverse the polarity of the connections.
This could cause an electrical fire.
● Ensure that the vent hose is always connec-
ted to the b
attery.
● Never use damaged batteries. This could
cause an e
xplosion! Replace a damaged bat-
tery immediately. CAUTION
● Never di s

connect the battery if the ignition
is switched on or if the engine is running.
This could damage the electrical system or
electronic components. Charging the battery
Terminals for charging the battery are fitted
in the en
gine comp

artment. –
Note the warnin
gs ››› in Important safety
w arnin
g
s for handling a vehicle battery on
page 278 and ››› .
– Switch off all electrical devices. Remove the
ignition k ey
.
– R

aise the bonnet ›››
page 271.
– Open the battery cover.
– Connect the charger clamps as described
to the po

sitive pole of the battery (+) and
exclusively to an earth on the bodywork
(–).
– Only use a charger which is compatible for
use with 12

V nominal voltage batteries.
The charge must not exceed a voltage of 15
V.
– Now connect the battery charger to the
power soc

ket and switch on.
– After charging the battery: switch off the
batter

y charger and disconnect the power
socket cable.
– Finally disconnect the charger cables from
the batter

y.
– Replace the battery cover correctly.
– Close the bonnet ›››
page 271.
Important: Before you charge the battery
make sure you read the manufacturer's in-
structions for using the battery charger. WARNING
Never charge a battery that has frozen: re-
pl ac

e battery! Failure to do so may lead to an
explosion. Note
Use only the terminals in the engine compart-
ment t o c

harge the battery. Replacing the battery
The new battery should have the same speci-
fic
ation
s

(amperage, load and voltage) as the
used battery.
Your vehicle is equipped with an intelligent
power management system to control the
distribution of electrical energy ›››
page 201.
The power management function ensures
that the battery is charged much more effi-
ciently than on vehicles without a power
management system. To maintain this func-
tion after replacing the battery, we recom-
mend that the replacement battery used is of
the same make and type as the original fitted
battery. To make proper use of the power
management function after the battery has
been changed, have the battery coded to the
power management mode at a specialised
workshop.
278