ignition Seat Leon 5D 2016 Repair Manual

Operation
WARNING
Never switch off the engine while the vehicle
is mo
ving. This could cause loss of control of
the vehicle, accidents and serious injury.
● The airbags and belt tensioners do not
work when the ignition i
s switched off.
● The brake servo does not work with the en-
gine off. Ther
efore, you need to press the
break pedal harder to brake the vehicle.
● Power steering does not work when the en-
gine is not
running. You need more strength
to steer when the engine is switched off.
● If the ignition is switched off, the steering
column c
ould be locked, making it impossible
to control the vehicle. CAUTION
If the engine is made to work hard for a long
time, it m a

y overheat after being switched
off. To prevent damage to the engine before
switching it off, leave it idle for approx. 2 mi-
nutes in neutral. Note
After switching off the engine, the cooling fan
ma y

continue to operate in the engine com-
partment for a few more minutes, even with
the ignition off. The radiator fan is automati-
cally switched off. “My Beat” Function
For vehicles with a convenience key there is
the “My
B

eat” function. This feature provides
an additional indication of the vehicle igni-
tion system.
When accessing the vehicle, e.g. by opening
the doors with the remote control, the START ENGINE STOP button flashes, drawing at-
tention t o the r

elevant starter system button.
Upon switching the ignition on/off, the light
of the START ENGINE STOP button flashes. With
the en gine sw
it

ched off, after a few seconds,
the STOP ENGINE START button stops flashing
and g oe
s

out.
With the engine running, the START ENGINE STOP button light stays on, indi-
c atin
g th

at the engine is running. Upon
switching the ignition off with the START ENGINE STOP button, it starts flashing
ag ain.
In v

ehicles with the Start-Stop system , the
“My Beat” function also offers additional in-
formation:
● When the engine stops during the Stop
phase, the light
of the START ENGINE STOP but-
t on s
t
ays on, since, even though the engine
is off, the Start-Stop system is active.
● When the engine cannot be stated again
with the St
art-Stop system, ›››
page 191, and
needs to be started manually, the START ENGINE STOP button flashes to indicate
thi s
f

act.
Braking and parking Electronic
parking brake* Fig. 188
In the lower part of the centre con-
so l
e: el

ectronic parking brake button. The electronic parking brake replaces the
h
andbr
ak

e.
Activating the electronic parking brake
The electronic parking brake can be activated
whenever the vehicle is at a standstill, even
when the ignition is switched off. Activate it
whenever you leave or park the vehicle.
● Pull and hold the  ›››
Fig. 188 button.
● The parking brake is activated when the
contro
l light of the ››› Fig. 188 button (arrow)
172

Driving
and the r ed  control light of the display in
the d a
sh panel are on.
● Release the button.
Rele
asing the electronic parking brake
● Switch the ignition on.
● Press the button  ›››
Fig. 188. At the same
time step hard on the brake pedal or, if the
engine is running, press the accelerator ped-
al slightly.
● The control light of the ›››
Fig. 188 button
(arrow) and the red  control light of the dis-
play in the dash panel go out.
Automatic release of the electronic parking
brake on starting the engine
The electronic parking brake is automatically
switched off when starting if, after the driv-
er's door is closed and the driver's seat belt
fastened, any of the following situations take
place:
● On vehicles with an automatic gearbox: A
gear r
ange is engaged or the vehicle is
switched to another one and the accelerator
pedal is lightly pressed.
● In vehicles with a manual gearbox: The
clutc
h pedal is pressed fully before starting
off and the accelerator is pedal lightly press-
ed.
● To facilitate certain manoeuvres there are
exc
eptions that allow the automatic parking brake to be released without the driver's seat
belt being f

astened.
The parking brake can be prevented from be-
ing automatically released by continuously
pulling up the  ››› Fig. 188 switch when
starting off.
The electronic parking brake is not discon-
nected until the  button is released. This
can facilitate starting off when a heavy load
is towed ››› page 234.
Automatic activation of the electronic park-
ing brake when exiting the vehicle incorrect-
ly
In vehicles with automatic transmission, the
electronic parking brake is activated auto-
matically when exiting the vehicle incorrectly
if: ● The selector lever is in the D/S or R posi-
tion or in the
Tiptronic selection track.
● AND: the vehicle is stationary.
● AND: the driv

er door is
open.
Emergency braking function
Only use the emergency brake function if you
are unable to stop the vehicle with the foot
brake ››› .
● Pull and hold the  › ›
›
Fig. 188 button in
this position to forcefully stop the vehicle. At the same time, an acoustic warning can be
heard.
●
T

o stop the braking process, release the
button or pr
ess the accelerator. WARNING
The improper use of the electronic parking
brak e c

an cause accidents and serious injury.
● Never use the electronic parking brake to
stop the
vehicle, unless it is an emergency.
The braking distance can be much longer. Al-
ways use the foot brake.
● Never accelerate from the engine when a
gear r
ange or a gear is engaged and the en-
gine is running. The vehicle could move, even
if the electronic parking brake is activated. CAUTION
To prevent the vehicle from unintentionally
mov in

g when parking it, first apply the elec-
tronic parking brake and then remove your
foot from the brake pedal. Note
● In v ehic

les with a manual gearbox, releas-
ing the clutch and accelerating at the same
time automatically disconnects the electronic
parking brake.
● If the vehicle battery is flat, it will not be
poss
ible to disconnect the electronic parking
brake. Use the jump-start ›››
 page 61. » 173
Technical data
Advice
Operation
Emergencies
Safety

Operation
●
When the electr onic
parking brake is ap-
plied or released, noises may be heard.
● The system performs automatic and audi-
ble t
ests sporadically in the parked vehicle if
some time elapses without the electronic
parking brake being used. Using the handbrake
Fig. 189
Handbrake between the front seats. The handbrake should be applied firmly to
pr
ev
ent

the vehicle from accidentally rolling
away.
Always apply the handbrake when you leave
your vehicle and when you park.
Applying the handbrake
– Pull the handbrake lever up firmly
›››
Fig. 189. Releasing the handbrake
– Pull the lever up slightly and press the re-
lea

se knob in the direction of the arrow
››› Fig. 189 and guide the handbrake lever
down fully ››› .
A lw
a

ys pull the handbrake all the way up, so
there is less risk of driving off with it still en-
gaged ››› .
The h andbr
ak

e warning lamp  lights up
when the handbrake is applied and the igni-
tion switched on. The warning lamp turns off
when the handbrake is released.
If you drive faster than 6 km/h (4 mph) with
the handbrake on, the following message*
will appear on the instrument panel: HAND-
BRAKE ON. You will also hear an audible
warning. WARNING
● Never u se the h

andbrake to stop the vehi-
cle when it is in motion. The braking distance
is considerably longer, because braking is
only applied to the rear wheels. Risk of acci-
dent!
● If the handbrake is only partially released,
this w
ill cause the rear brakes to overheat,
which can impair the function of the brake
system and could lead to an accident. This al-
so causes premature wear on the rear brake
pads. CAUTION
Always apply the handbrake before you leave
the v ehic

le. Put it in 1st gear as well. Parking
The handbrake should always be firmly ap-
plied when the
v

ehicle is parked.
Always note the following points when park-
ing the vehicle: – Use the brake pedal to stop the vehicle.
– Apply the handbrake.
– Put it in 1st gear.
– Switch the engine off and remove the key
from the ignition. T

urn the steering wheel
slightly to engage the steering lock.
– Never leave a vehicle key in the vehicle.
Additiona
l notes on parking the vehicle on
gradients:
Turn the steering wheel so that the vehicle
rolls against the kerb if it started to roll.
● If the vehicle is parked facing downhil
l,
turn the front wheels so that they point to-
wards the kerb .
● If the vehicle is parked facing uphill
, turn
the front wheels so that they point away from
the kerb.
174

Operation
WARNING
If the gear is changed down inappropriately
by sel
ecting a gear that is too low, you may
lose control of the vehicle, causing an acci-
dent and serious injuries. CAUTION
When travelling at high speeds or at high en-
gine speed s, sel

ecting a gear that is too low
can cause considerable damage to the clutch
and the gearbox. This can also occur if the
clutch pedal is pressed and held and it does
not engage. CAUTION
To prevent damage and avoid premature
we ar

, please observe the following:
● Do not rest your hand on the gear lever
while driv
ing. The pressure applied by your
hand is transmitted to the gearbox selector
forks.
● Always ensure that the vehicle is complete-
ly st
opped before engaging the reverse gear.
● Always press the clutch to the floor when
chan
ging gears.
● Never hold the vehicle “on the clutch” on
hill
s with the engine on. Automatic gearbox/DSG auto-
m
atic
g

earbox*
Introduction 

›› ›

table on page 2
Your vehicle is equipped with an electronical-
ly controlled manual gearbox. Torque be-
tween the engine and the gearbox is trans-
mitted via two independent clutches. They re-
place the torque converter found on conven-
tional automatic gearboxes and allow for
smooth, uninterrupted acceleration of the ve-
hicle.
The tiptronic system allows the driver to
change gears manually if desired
››› page 182, Changing gears in tiptronic
mode*.
Selector lever positions Read the additional information carefully
› ›
›

 page 43
The selector lever position engaged is high-
lighted on the display in the instrument clus-
ter. With the selector lever in the manual
gearbox positions G, D, E and S, the engaged
gear is also indicated on the display. P – Parking lock
When the selector l

ever is in this position,
the driven wheels are locked mechanically.
The parking lock must be engaged only when
the vehicle is stationary ››› .
The int erloc
k

button (the button on the selec-
tor lever handle) must be pressed in and si-
multaneously the brake pedal must be de-
pressed before moving the selector lever ei-
ther in or out of position P.
R – Reverse gear
Reverse gear must be engaged only when the
vehicle is stationary and the engine is idling
››› .
T o mo
v

e the selector lever to position R, the
interlock button must be pressed in and at
the same time the brake pedal must be de-
pressed. The reverse lights come on when
the selector lever is in the R position with the
ignition on.
N – Neutral (idling)
With the selector lever in this position, the
gear is in neutral.
D/S – Permanent drive (forward) position
The selector lever in the D/S position enables
the gears to be controlled in normal mode (D)
or Sport mode (S). To select Sport mode (S),
move the selector lever backwards. Moving
the lever again will select normal mode (D).
180

Driving
The selected driving mode is shown on the
in s
trument
panel display.
In normal mode (D), the gearbox automatical-
ly selects the best gear ratio. This depends
on the engine load, the road speed and the
dynamic gear control programme (DCP).
Sport mode (S) must be selected for a sporty
driving style. This setting makes use of the
engine's maximum power output. When ac-
celerating the gear shifts will be noticeable.
Press the brake pedal to move the selector
lever from N to D/S when the vehicle is sta-
tionary or at speeds below 3 km/h (2 mph)
››› .
Under c er
t

ain circumstances (e.g. when driv-
ing in mountains) it can be advantageous to
switch temporarily to tiptronic mode
››› page 182, in order to manually select gear
ratios to suit the driving conditions. WARNING
● Tak e c

are not to accidentally press the ac-
celerator pedal when the vehicle is stopped.
The vehicle could otherwise start moving im-
mediately (in some cases even if the parking
brake is engaged) resulting in the risk of an
accident.
● Never move the selector lever to R or P
when driving. F
ailure to follow this instruc-
tion could result in an accident.
● With selector lever in any position (except
P) the vehic
le must always be held with the foot brake when the engine is running. This is
becau
se an aut

omatic gearbox still transmits
power even at idling speed, and the vehicle
tends to “creep”. The accelerator pedal must
on no account be pressed inadvertently when
a gear is engaged with the vehicle stationary.
The vehicle could otherwise start moving im-
mediately (in some cases even if the parking
brake is engaged) resulting in the risk of an
accident.
● While you are selecting a gear and the vehi-
cle i
s stopped with the engine running, do
not accelerate. Failure to follow this instruc-
tion could result in an accident.
● As a driver you should never leave your ve-
hicle if
the engine is running and a gear is en-
gaged. If you have to leave your vehicle while
the engine is running, you must apply the
handbrake and engage the parking lock (P).
● To avoid accidents, apply the handbrake
and put the sel
ector lever in position P before
opening the bonnet and working on the vehi-
cle with the engine running. Please always
observe the important safety warnings
››› page 262, Work in the engine compart-
ment. Note
● If the sel ect

or lever is moved accidentally
to N when driving, release the accelerator and
let the engine speed drop to idling before se-
lecting gear range D or S again.
● Should the power supply to the selector
lever be int
errupted in position P, the selector lever will be locked. If this should happen the
manua
l

release can be used ›››
 page 43. Selector lever lock
Fig. 191
Selector lever lock. The selector lever lock prevents gears from
bein g en
g

aged inadvertently, so that the ve-
hicle is not set in motion unintentionally.
The selector lever lock is released as follows:
– Switch the ignition on.
– Press the brake pedal and at
the same time
press in the interlock button.
Automatic selector lever lock
With the ignition switched on, the selector
lever is locked in the positions P and N. The
brake pedal must be pressed to release the
lever while pressing the release button if the
selector lever is in the position P. As a »
181
Technical data
Advice
Operation
Emergencies
Safety

Operation
reminder for the driver, with the lever in posi-
tion s
P or N the f
ollowing message will be
shown on the display:
When stationary, apply footbrake
while selecting a gear.
Level lock only engages with the vehicle sta-
tionary and at speeds of up to 5 km/h
(3 mph). At speeds of over 5 km/h (3 mph)
the lever lock is automatically deactivated in
position N.
The selector lever lock is not engaged if the
selector lever is moved quickly through posi-
tion N (e.g. when shifting from R to D). This
makes it possible, for instance, to rock the
vehicle “backwards and forwards” if it is
stuck. The selector lever lock engages auto-
matically if the brake pedal is not depressed
and the lever is in position N for more than
about two seconds.
Interlock button
The interlock button on the selector lever
handle prevents the driver from inadvertently
engaging certain gears. Press the button in
to disengage the selector lever lock. The se-
lector lever positions in which the interlock
button has to be pressed are shown in the il-
lustration, highlighted in colour ››› Fig. 191.
Safety interlock for ignition key
Once the ignition has been turned off, the
key may be removed only if the gear selector is in position P. While the key is not in the ig-
nition, the selector l
ever is locked in position
P. Note
● If the sel ect

or lever lock does not engage,
there is a fault. The transmission is interrup-
ted to prevent the vehicle from accidentally
moving. Follow the procedure below in order
for the selector lever lock to engage again:
–With a 6-speed gearbox: press the brake
pedal and release it again.
– With a 7-speed gearbox: press the brake
pedal. Move the selector lever to posi-
tion P or N and subsequently engage a
gear.
● Despite a gear being engaged, the vehicle
does not
move forwards or back. Proceed to
the next mode:
– When the vehicle does not move in the
required direction, the system may not
have the gear range correctly engaged.
Press the brake pedal and engage the
gear range again.
– If the vehicle still does not move in the
required direction, there is a system mal-
function. Seek specialist assistance and
have the system checked. Changing gears in tiptronic mode*
Fig. 192
Centre console: changing gear with
tiptr onic Fig. 193
Steering wheel: automatic gearbox
l ev
er

s The tiptronic gives the driver the option to
c
h
an

ge gears manually.
182

Operation
Catalytic converter 3 Applies to vehicles with petrol engine
The v
ehicle must only be used with unleaded
petrol, otherwise the catalytic converter will
be irreparably damaged.
Never drive until the tank is empty; an irregu-
lar supply of fuel can cause faulty combus-
tion. In these cases, unburned fuel reaches
the exhaust system, which can overheat and
damage the catalytic converter.
Diesel particulate filter 3 App
lies to vehicles with diesel engine
The die
sel engine particulate filter eliminates
most of the soot from the exhaust gas sys-
tem. Under normal driving conditions, the fil-
ter cleans itself. The diesel particulate filter is
cleaned automatically without need for indi-
cation by the warning lamp . This may be
noticed because the engine idle speed in-
creases and an odour may be detected.
If automatic filter purification cannot be car-
ried out (because only short trips are taken,
for example), soot will accumulate on the fil-
ter and the Diesel particulate filter warning
lamp will  switch on.
Facilitate the automatic filter cleaning proc-
ess by driving in the following manner: drive
for approximately 15 minutes at a minimum
speed of 60 km/h (37 mph) in 4th or 5th gear (automatic gearbox: gear S). Maintain the en-
gine speed at
ap

proximately 2,000 rpm. The
rise in temperature causes the soot on the fil-
ter to burn. On completion of the cleaning
the warning lamp will switch off. If the warn-
ing lamp does not switch off, go immediately
to a specialised workshop to rectify the prob-
lem.
Engine management*  This warning lamp monitors the engine man-
ag
ement
sy

stem for petrol engines.
The warning lamp  (Electronic Power Con-
trol) lights up when the ignition is switched
on while system operation is being verified. 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. Take the vehi-
cle to a specialised workshop as soon as
possible and have the engine checked.
Emission control system*  Control lamp
 fla
she
s:
When there is misfiring that can damage the
catalytic converter. Reduce speed and drive
carefully to the nearest specialised workshop
to have the engine checked. The control lamp
 lights up:
If
a fault has developed during driving which
has reduced the quality of the exhaust gas
(e.g. lambda probe fault). Reduce speed and
drive carefully to the nearest specialised
workshop to have the engine checked.
Engine pre-heating/fault system*  The warning lamp lights up to show that the
glow p
lug

s are preheating the diesel engine.
The control lamp  lights up
If the control lamp  lights up when the en-
gine is started it means that the glow plugs
are preheating. The engine can be started
straight away when the lamp switches off.
Control lamp  flashes
If a fault develops in the engine management
system while you are driving, the glow plug
system lamp will flash . Take the vehicle to
a specialised workshop as soon as possible
and have the engine checked.
190

Driver assistance systems
Driving tips Driv in
g thr
ough flooded roadsTo prevent damage to the vehicle when driv-
ing thr
ough w

ater, for example, along a floo-
ded road, please observe the following:
● The water should never come above the
lower edg
e of the bodywork.
● Drive at pedestrian speed. WARNING
After driving through water, mud, sludge,
etc ., the br

aking effect can be delayed slight-
ly due to moisture build-up on the discs and
brake pads. Applying the brakes carefully
several times will remove the moisture and
restore the full braking effect. CAUTION
● Drivin g thr

ough flooded areas may severely
damage vehicle components such as the en-
gine, transmission, running gear or electrical
system.
● Whenever driving through water, the Start-
Stop sys
tem* must be switched off
››› page 191. Note
● Check the depth of

the water before enter-
ing the flooded zone. ●
Do not s t

op in the water, drive in reverse, or
stop the engine in any situation.
● Note that vehicles travelling in the opposite
direction ma
y splash water that could exceed
the maximum permitted water height for your
vehicle.
● Avoid driving through salt water (corro-
sion). Driver assistance systems
St ar
t

-Stop system*
Description and operation 

›› ›

table on page 2
The Start-Stop system helps save fuel and re-
duce CO 2 emissions.
In Start-Stop mode, the engine will automati-
cally switch off when the vehicle stops, when
stopping at traffic lights for example. The ig-
nition remains switched on during the stop-
ping phase. The engine automatically
switches back on when required.
As soon as the ignition is switched on, the
Start-Stop function is automatically activa-
ted.
Basic requirements for the Start-Stop mode
● The driver door must be closed.
● The driver must have their seat belt fas-
tened.
● The bonnet mu

st be closed.
● The vehicle must have travelled at more
than 4 km/h (2 mph) sinc
e the last stop.
● The vehicle cannot be towing a trailer. »
191
Technical data
Advice
Operation
Emergencies
Safety

Operation
WARNING
● Never sw it
ch the engine off until the vehi-
cle is stationary. The brake servo and power
steering functions will not be completely cov-
ered under warranty. More force may also be
needed to turn the steering wheel or to brake.
As you cannot steer and brake in the normal
manner, there is a greater risk of accidents
and serious injury.
● Never remove the key from the ignition if
the vehic
le is in motion. Otherwise, the steer-
ing could lock making it impossible to steer
the vehicle.
● To avoid injury, make sure that the Start-
Stop sys
tem is switched off when working in
the engine compartment ››› page 193. CAUTION
The Start-Stop system must always be
swit c

hed off when driving through flooded
areas ››› page 193. Stopping/Starting the engine
Vehicles with a manual gearbox
– When the vehicle is stopped, put it into
neutr al
and r

elease the clutch pedal. The
engine will switch off. The warning lamp 
will appear on the instrument panel dis-
play. –
When the clutc
h pedal is pressed the en-
gine will start up again. The warning lamp
will switch off.
Vehicles with an automatic gearbox
– Use the foot brake to bring the vehicle to a
stop and k

eep the brake pedal pressed
down with your foot. The engine will switch
off. The warning lamp  will appear in the
display.
– When you take your foot off the brake pedal
the engine wi

ll start up again. The warning
lamp will switch off.
Additional information related to the auto-
matic gearbox
The engine stops when the selector lever is in
the positions P, D, N and S, in addition to
when in manual mode. With the selector lev-
er in position P, the engine will also remain
switched off when you take your foot off the
brake pedal. In order to start the engine up
again the accelerator must be pressed, or an-
other gear engaged or the brake released.
If the selector lever is placed in position R
during the stopping phase, the engine will
start up again.
Change from position D to P to prevent the
engine from accidentally starting when
changing and passing by position R. Note
● You c an c

ontrol whether the engine should
switch off or not by reducing or increasing the
brake force applied. While the vehicle re-
mains stopped, the engine will not stop if the
brake pedal is slightly pressed, in traffic jams
with frequent stopping and starting for exam-
ple. As soon as strong pressure is applied to
the brake pedal, the engine will stop.
● In vehicles with manual gearbox, during
the stop
ping phases the brake pedal must re-
main depressed to prevent the vehicle from
moving.
● If the engine “stalls” in vehicles with man-
ual g
earbox, it can be directly started up
again by immediately pressing the clutch
pedal. General notes
The system can interrupt the Start-Stop mode
fr
equently
f

or different reasons.
The engine does not switch off
Before the stopping phase, the system veri-
fies whether certain conditions are met. The
engine does not switch off, in the following
situations for example:
● The engine has not yet reached the mini-
mum required t
emperature for the Start-Stop
mode.
192

Operation
Auto Hold Function* D e
s
cription and operation Fig. 195
In the lower part of the centre con-
so l
e: Aut

o Hold function button. The control light of the 
› ›
›
Fig. 195 button
remains on when the Auto Hold function is
connected.
Once connected, the Auto Hold function as-
sists the driver in keeping the vehicle station-
ary at repeated intervals or for a certain peri-
od of time with the engine running, for exam-
ple, when going up a slope, when stopped at
traffic lights or in heavy traffic with intermit-
tent stops.
When connected, the Auto Hold function au-
tomatically prevents the vehicle from rolling
when stationary without pressing the brake
pedal. After detecting that the vehicle is stationary
and the brake ped

al has been released, the
Auto Hold function holds the vehicle. The
driver can lift their foot off the brake pedal.
When the driver touches the accelerator ped-
al or accelerates slightly to continue driving,
the Auto Hold function releases the brake.
The vehicle moves according to the slope of
the road.
If the vehicle is stationary and one of the con-
ditions required by the Auto Hold function is
impaired, it disconnects itself and the but-
ton's control light goes out ››› Fig. 195. The
electronic parking brake connects automati-
cally, if necessary, to park the vehicle safe-
ly ››› .
C ondition
s

for keeping the vehicle stationary
with the Auto Hold function
● The driver door must be closed.
● The driver's seat belt must be fastened.
● The engine is running.
Switc
hing the Auto Hold function on and off
Press the button  ››› . The control lamp on
the b utt
on g

oes out when the Auto Hold func-
tion is switched off. Automatically engaging and disengaging the
Auto Hol

d function
If the Auto Hold function was switched on
with the  button before disengaging the ig-
nition, the function will remain on after the
ignition is re-engaged.
If the Auto Hold function was not switched
on, it will automatically remain off next time
the ignition is engaged.
The Auto Hold function is automatically
switched on if the following conditions are
met:
All conditions must be met at the same time
››› :
Manual gearboxAutomatic gearbox
1.The vehicle is kept stationary with the brake ped-
al on a flat surface or on a slope.
2.The engine rotates “correctly”.
Upon pressing the
clutch and accelerating
at the same time, the
brake releases gradu-
ally.Upon accelerating, the
brake releases gradu-
ally. 194