2017 Seat Leon 5D brake

Operation
– When the en gine i
s
running, switch off the
traction control (ASR) 1)
.
– Turn the selector lever to the position “S”
or tiptronic, or else sel

ect the sport driv-
ing mode from the SEAT Drive Profile*
››› page 230.
– Press the brake pedal firmly with your left
foot and ho

ld it down for at least one sec-
ond.
– With your right foot, press the accelerator
down to the f

ull throttle or kick-down posi-
tion. The engine speed will stabilise at
about 3,200 rpm (petrol engine) or about
2,000 rpm (diesel engine).
– Take your left foot off the brake pedal. WARNING
● Alw a

ys adapt your driving style to the traf-
fic conditions.
● Only use the launch control programme
when roa
d and traffic conditions permit, and
make sure your manner of driving and accel-
erating the vehicle does not inconvenience or
endanger other road users.
● Make sure that the ESC remains switched
on. Plea
se note that when the ASR and ESC
are deactivated, the wheels may start to spin, causing the vehicle to lose grip. Risk of acci-
dent!
●
After moving off, the ESC “sport” mode
shoul d be de

activated by briefly pressing the
  button. Note
● Af ter u

sing the Launch control programme,
the temperature in the gearbox may have in-
creased considerably. In this case, the pro-
gramme could be disabled for several mi-
nutes. The programme can be used again af-
ter the cooling phase.
● Accelerating with the Launch control pro-
gramme pl
aces a heavy load on all parts of
the vehicle. This can result in increased wear
and tear. Downhill speed control*
The downhill speed control function helps
the driv
er when driv
in

g down steep gradi-
ents.
Downhill speed control is activated when the
selector lever is in D/S and the driver applies
the foot brake. The automatic gearbox auto-
matically engages a lower gear that is suita-
ble for the slope. The downhill speed control function attempts to maintain the speed at
which the v

ehicle was travelling when the
foot brake was applied (subject to the laws of
physics and technical drive limitations). It
may be necessary to adjust the speed again
using the foot brake in certain situations. Giv-
en that the downhill speed control can only
change down to 3rd gear, on very steep de-
scents the tiptronic mode may be required. In
this case, manually reduce the tiptronic to
2nd or 1st gear to use the engine brake and
reduce the charge on the brakes.
Downhill speed control is deactivated as
soon as the road levels out again or you
press the accelerator pedal.
On vehicles with cruise control system*
››› page 209, downhill speed control is acti-
vated when you set a cruising speed. WARNING
The downhill speed control cannot defy the
la w

s of physics. Therefore, speed cannot be
maintained constant in all situations. Always
be prepared to use the brakes! 1)
Vehicles without driver information system: the
warnin g l

amp flashes slowly/Vehicles with driver in-
formation system: the warning lamp stays on.
196

Driving
Inertia mode The inertia mode enables the kinetic energy
of the
v
ehicle to be harnessed enabling cer-
tain stretches to be driven without using the
accelerator. This enables fuel to be saved.
Use the inertia mode to “let the vehicle roll”
before, for example, arriving in a town.
Switching on inertia mode
Important: selector lever must be in position
D, gradients below 12 %.
– Select, in SEAT Drive Profile*, Eco mode
›› ›

page 230.
– Take your foot off the accelerator.
The driver mes
sage Inertia will be dis-
played. At speeds higher than 20 km/h (12
mph), the gearbox will automatically disen-
gage and the vehicle will roll freely, without
the effect of the engine brake. While the vehi-
cle rolls, the engine runs at idling speed.
Stopping inertia mode
– Press the brake or the accelerator pedal.
To mak
e use of the braking force and switch
off the engine again, simply press the brake
pedal briefly.
Applying both the inertia mode (= prolonged
section with less energy) and the switching
off using inertia (= shorter section without the need for fuel) facilitates improved fuel
cons

umption and emission balance. WARNING
● If the iner ti

a mode has been switched on,
take into account, when approaching an ob-
stacle and releasing the accelerator pedal,
that the vehicle will not decelerate in the usu-
al manner: risk of accident!
● When using inertia mode while travelling
down hil
ls, the vehicle can increase speed:
risk of accident!
● If other users drive your vehicle, warn them
about inerti
a mode. Note
● Inerti a mode i

s only available in eco (SEAT
Drive Profile*) driving mode.
● The driver message Inertia is on
ly dis-
played with the current consumption. In iner-
tia mode the gear will no longer be displayed
(for example “E” will appear instead of “E7”).
● On downhill sections with gradients above
15 %, the inertia mode w
ill automatically be
switched off temporarily. Emergency program
A backup programme is in place if a fault
shou
l
d oc

cur in the control system. If all the positions of the selector lever are
shown ov

er a light background on the instru-
ment panel display, there is a system fault
and the automatic gearbox will operate in
with the backup programme. When the back-
up programme is activated, it is possible to
drive the vehicle, however, at low speeds and
within a selected range of gears. In some ca-
ses driving in reverse gear may not be possi-
ble. CAUTION
If the gearbox operates with the backup pro-
gramme, t ak

e the vehicle to a specialised
workshop and have the fault repaired without
delay. Clutch

Clutch overheating! Please
stop!
The c lut

ch has overheated and could be dam-
aged. Stop the vehicle and wait for the gear-
box to cool with the engine at idling speed
and the selector lever in position P. When the
warning lamp and the driver message switch
off, have the fault corrected by a specialised
workshop without delay. If the warning lamp
and the driver message do not switch off, do
not continue driving. Seek specialist assis-
tance.
197
Technical data
Advice
Operation
Emergencies
Safety

Operation
Gearbox malfunctions  Gearbox: Fault! Stop the ve-
hicle and place the lever in the
position P.
Ther e is
a fault in the gearbox. Stop the vehi-
cle in a safe place and do not continue driv-
ing. Seek specialist assistance.
 Gearbox: System fault! You
may continue driving.
Have the fault corrected by a specialised
workshop without delay.  Gearbox: System fault! You
can continue driving with re-
strictions. Reverse gear disa‐
bled
Take the vehicle to a specialised workshop
and have the fault repaired without delay.  Gearbox: System fault! You
can continue driving in D until
switching off the engine
Stop the vehicle in a safe place well away
from moving traffic. Seek specialist assis-
tance.  Gearbox: too hot. Adapt your
driving accordingly
Continue driving at moderate speeds. When
the warning lamp switches off, you can con-
tinue driving in a normal manner.  Gearbox: press the brake and
engage a gear again.
If the fau

lt was caused by a gearbox with a
high temperature, this driver message will be
displayed when the gearbox has cooled
again.
Address Electromec
hanical steering Electro-mechanical power steering assists
the driv
er when s
t

eering.
Electro-mechanical power steering adapts
electronically to the speed of the car, torque
and turning angle.
If the power steering should fail at any time
or the engine is switched off (for instance
when being towed), the car can still be
steered. However, more effort than normal
will be required to turn the steering wheel.
Driver warning lamps and messages  (in red) Faulty steering! To
park the vehicle
If the warning lamp remains on and the driver
indication appears, the power steering could
be faulty.
Do not continue driving. Seek specialist as-
sistance.  (in yellow) Steering: System
fault! You may continue driving.
If the warnin

g lamp comes on, the steering
could react with more difficultly or more sen-
sitivity than normal. In addition, when driving
in a straight line the steering wheel may be
off-centre.
Drive slowly to a specialised workshop and
have the fault repaired.
 (in yellow) Steering lock:
fault! Go to an Official Service
The electronic steering lock is malfunction-
ing.
Go to a specialised workshop as soon as
possible and have the fault repaired. WARNING
Take it immediately to a specialised work-
shop and hav e the f

ault repaired: risk of acci-
dent! Note
If the lamp  (in red) or el se
 (in yellow)
lights up briefly, you may continue driving. Progressive steering
Depending on the vehicle equipment, the
pr
ogr
e

ssive steering can adapt steering hard-
ness to the current driving situation. The
198

Operation
Economical and environmentally-
friendly driv
in
gFuel consumption, environmental pollution
and we
ar t

o the engine, brakes and tyres de-
pends largely on driving style. Fuel consump-
tion can be reduced by 10-15% with an eco-
nomical driving style and proper anticipation
of traffic conditions. The following section
gives you some tips on lessening the impact
on the environment and reducing your oper-
ating costs at the same time.
Active cylinder management (ACT ®
)*
Depending on vehicle equipment, the active
cylinder management (ACT ®
) may automati-
cally deactivate some of the engine cylinders
if the driving situation does not require too
much power. When it is switched off, no fuel
is injected into these cylinders, hence total
fuel consumption may be reduced. The num-
ber of active cylinders can be seen on the in-
strument panel display ›››
 page 37.
Foresight when driving
Acceleration causes the vehicle to consume
more fuel. If you think ahead when driving,
you will need to brake less and thus acceler-
ate less. Wherever possible, let the car roll
slowly to a stop, with a gear engaged (for in-
stance when you can see that the next traffic
lights are red). This takes advantage of the
engine braking effect, reducing wear on the brakes and tyres. Emissions and fuel con-
sumption w
i

ll drop to zero due to the overrun
fuel cut-off.
Changing gear to save energy
An effective way of saving is to change in ad-
vance to a higher gear. Running the engine at
high rpm in the lower gears uses an unneces-
sary amount of fuel.
Manual gearbox : shift up from first to second
gear as soon as possible. In any case, we rec-
ommend that you change to a higher gear
upon reaching 2,000 rpm. Choosing the right
gear enables fuel savings. Select the highest
possible gear appropriate for the driving sit-
uation (the engine should continue function-
ing with cyclical regularity).
Automatic gearbox : accelerate gradually and
without reaching the “kick-down” position.
Avoid driving at high speed
Avoid travelling at top speed, whenever pos-
sible. Fuel consumption, emission of harmful
gases and noise pollution multiply dispropor-
tionately as speed is increased. Driving at
moderate speeds will help to save fuel.
Reduce idling time
In vehicles with the Start-Stop system idling
is automatically reduced. In vehicles without
the Start-Stop system it is worth switching off
the engine, for example, at level crossings and at traffic lights that remain red for long
periods of
time. When an engine has reached
operating temperature, and depending on
the cylinder capacity, keeping it switched off
for a minimum of about 5 seconds already
saves more than the amount of fuel necessa-
ry for restarting.
The engine takes a long time to warm up
when it is idling. Mechanical wear and pollu-
tant emissions are also especially high dur-
ing this initial warm-up phase. It is therefore
best to drive off immediately after starting
the engine. Avoid running the engine at high
speed.
Regular maintenance
Regular servicing helps in saving fuel even
before the engine is started. A well-serviced
engine gives you the benefit of improved fuel
efficiency as well as maximum reliability and
an enhanced resale value. A badly serviced
engine can consume up to 10% more fuel
than necessary.
Avoid short journeys
The engine and catalytic converter need to
reach their optimal operating temperature in
order to minimise fuel consumption and
emissions.
A cold engine consumes a disproportionate
amount of fuel. The engine reaches its work-
ing temperature after about four kilometres
200

Operation
Control lamp  fla
she s
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.
Driving tips
Driving thr
ough flooded roadsTo prevent damage to the vehicle when driv-
in
g 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
sys
t

em.
● Whenever driving through water, the Start-
Stop sys
tem* must be switched off
››› page 205. Note
● Chec k the depth of

the water before enter-
ing the flooded zone.
● Do not stop in the water, drive in reverse, or
stop the en
gine 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). Four-wheel drive
3 V
alid for vehicles: with four-wheel drive
On f
our-wheel drive models, the engine pow-
er is distributed to all four wheels
General notes
On four-wheel drive vehicles, the engine
power is distributed to all four wheels. The
distribution of power is controlled automati-
cally according to your driving style and the
road conditions. Also see ››› page 187, Brak-
ing and stability systems .The four-wheel drive is specially designed to
comp
l

ement the superior engine power. This
combination gives the vehicle exceptional
handling and performance capabilities, both
on normal roads and in more difficult condi-
tions, such as snow and ice. Even so (or per-
haps especially for this reason), it is impor-
tant to observe certain safety points ››› .
W int
er ty

res
Thanks to four-wheel drive, your vehicle will
have plenty of traction in winter conditions,
even with the standard tyres. Nevertheless,
we still recommend that winter tyres or all-
season tyres be fitted on all four wheels to
give even better braking response.
Snow chains
On roads where snow chains are mandatory,
this also applies to cars with four-wheel drive
›››  page 69.
Changing tyres
On vehicles with four-wheel drive, all four
tyres must have the same rolling circumfer-
ence. Also avoid using tyres with varying
tread depths ››› page 281.
Off-roader?
Your SEAT is not an off-road vehicle: it does
not have enough ground clearance to be
used as such. It is therefore best to avoid
204

Driver assistance systems
rough tracks and uneven terrain as much as
po s
s
ible. WARNING
● Ev en w

ith four-wheel drive, you should al-
ways adjust your speed to suit the condi-
tions. Do not let the extra safety features
tempt you into taking any risks when driving.
Risk of accident!
● The braking capability of your vehicle is
limited by
the tyres' grip. It is therefore no
different from a car without four-wheel drive.
So do not be tempted to drive too fast on firm
or slippery roads just because the vehicle
still has good acceleration in these condi-
tions. Risk of accident!
● On wet roads bear in mind that the front
wheels m
ay start to “aquaplane” and lose
contact with the road if the car is driven too
fast. If this should happen, there will be no
sudden increase in engine speed to warn the
driver, as occurs with a front-wheel drive car.
For this reason you should always choose a
driving speed suitable for the road condi-
tions. Risk of accident! Driver assistance systems
St ar
t

-Stop System*
Description and operation The Start-Stop system helps save fuel and re-
duce C
O
2 emi

ssions.
In Start-Stop mode, the engine will automati-
cally switch off when the vehicle stops or is
stopping; for example when stopping at traf-
fic lights. The ignition remains switched on
during the stopping phase. The engine auto-
matically switches back on when required. In
this situation, the light of the START ENGINE STOP button stays on
1)
.
As soon a
s

the ignition is switched on, the
Start-Stop function is automatically activa-
ted.
Further information about the Start-Stop sys-
tem can be found in the Easy Connect sys-
tem: by pressing the  button in the Vehi-
cle status menu.
B a
s

ic requirements for the Start-Stop mode
● The driver door must be closed.
● The driver must have their seat belt fas-
tened. ●
The bonnet mus
t be closed.
● The engine must have reached a minimum
servic
e temperature.
● The reverse gear must not be engaged.
● The vehicle must not be on a very steep
slope. 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 207. CAUTION
The Start-Stop system must always be
swit c

hed off when driving through flooded
areas ››› page 207. 1)
Only in vehicles with Keyless Access.
205
Technical data
Advice
Operation
Emergencies
Safety

Operation
Stopping/Starting the engine Vehicles with a manual gearbox
– Before stopping the vehicle or when it is
stop
ped, put it into neutral and release the
clutch pedal. The engine will switch off. The
warning lamp  will appear on the instru-
ment panel display. The engine may stop
before the vehicle comes to a halt in the
deceleration phase (at 7 km/h).
– When the clutch pedal is pressed the en-
gine wil

l 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. The engine may stop before the ve-
hicle comes to a halt in the deceleration
phase (at 7 km/h or 2 km/h, depending on
the vehicle’s gearbox).
– When you take your foot off the brake pedal
the engine wi

ll start up again. The warning
lamp will switch off. In vehicles with the Au-
to Hold* system, when the system is active,
the engine will not start if you remove your
foot from the brake pedal. The car starts
when you press the accelerator pedal. Additional information related to the auto-
matic g

earbox
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.
Additional information about vehicles with
Adaptive Cruise Control (ACC)
In vehicles with ACC function, the engine will
start up again in certain operating conditions
if the radar sensor detects that the vehicle
ahead drives off again. Note
● In v ehic

les with an automatic gearbox, you
can control whether the engine should switch
off or not by reducing or increasing the brake
force applied. While the vehicle remains stop-
ped, the engine will not stop if the brake ped-
al is slightly pressed, in traffic jams with fre-
quent stopping and starting for example. As soon as strong pressure is applied to the
brak
e ped

al, 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.
● The interior temperature selected for the air
conditioner ha
s not yet been reached.
● The interior temperature is very high/low.
● Defrost function button activated
›› ›

 page 52.
● The parking aid* is switched on.
206

Driver assistance systems
● The b att
er
y is very low.
● The steering wheel is overly turned or is be-
ing turned.
● If

there is a danger of misting.
● After engaging reverse gear.
● In case of a very steep gradient.
The indication 
is shown on the instrument
panel display, and in addition, the driver in-
formation system* shows, .
The engine starts by itself
During a stopping phase the normal Start-
Stop mode can be interrupted in the follow-
ing situations: The engine restarts by itself
without involvement from the driver.
● The interior temperature differs from the
value select
ed on the air conditioner.
● Defrost function button activated
›››
 page 52.
● The brake has been pressed several times
consec
utively.
● The battery is too low.
● High power consumption. Note
In vehicles with an automatic gearbox, if the
select or l

ever is placed in position D, N or S
after engaging reverse gear, the vehicle must
be driven at a speed faster than 10 km/h (6 mph) for the system to return to conditions in
which the en
gine c

an be stopped. Manually switching on/off the Start-
Stop sy
s

tem Fig. 201
Centre console: Start-Stop system
b utt
on. If you do not wish to use the system, you can
sw
it
c

h it off manually.
– To manually switch on/off the Start-Stop
syst

em, press the  button. The button
symbol remains lit up yellow when the sys-
tem is switched off. Note
The system is automatically switched on each
time the engine i s

deliberately stopped dur-
ing a stopping phase. The engine will start
automatically. Driver messages on the instrument
p
anel
di

splay Start-Stop system deactivated.
Start the engine manually
This driv

er message is displayed when cer-
tain conditions are not met during the stop-
ping phase and the Start-Stop system cannot
restart the engine. The engine must be star-
ted manually.
Start-Stop system: Fault! Func-
tion not available There is a fault in the Start-Stop system. Take
the vehicle to a workshop to have the fault
repaired.
207
Technical data
Advice
Operation
Emergencies
Safety