2014 Seat Leon 5D cruise control

Operation
Note
The system is automatically switched on each
time the engine is deliberately stopped dur-
ing a stopping phase. The engine will start
automatically. Driver messages on the instrument
panel display
Start-Stop system deactivated. Start the
engine manually
This driver 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! Function not available
There is a fault in the Start-Stop system. Take
the vehicle to a workshop to have the fault
repaired.
Cruise control system (CCS)* How it works The cruise control system (CCS) is able to
maintain the set speed from 20 km/h (15
mph). The CSS only reduces vehicle speed by ceas-
ing to accelerate, not by actively braking the
vehicle
››› .
WARNING
Use of the cruise control could cause acci-
dents and severe injuries if it is not possible
to drive at a constant speed maintaining the
safety distance.
● Do not use the cruise control in heavy traf-
fic, if the distance from the vehicle in front is
insufficient, on steep roads, with several
bends or in slippery circumstances (snow,
ice, rain or loose gravel), or on flooded roads.
● Never use the CCS when driving off-road or
on unpaved roads.
● Always adapt your speed and the distance
to the vehicles ahead in line with visibility,
weather conditions, the condition of the road
and the traffic situation.
● To avoid unexpected operation of the cruise
control system, turn it off every time you fin-
ish using it.
● It is dangerous to use a set speed which is
too high for the prevailing road, traffic or
weather conditions.
● When travelling down hills, the CCS cannot
maintain a constant speed. The vehicle tends
to accelerate under its own weight. Select a
lower gear or use the foot brake to slow the
vehicle. Warning and control lamp
Fig. 148
Instrument panel display: CCS status
indications Control lamp
When the warning lamp  is lit, cruise con-
trol is active.
Several warning and control lamps light up
for a few seconds when the ignition is switch-
ed on, signalling that the function is being
verified. They will switch off after a few sec-
onds.
Displayed on the CCS screen
Status

Fig. 148:
CCS temporarily switched off. The set
speed is displayed in small figures.
A 150

Driver assistance systems
System error. Contact a specialised work-
shop.
CCS switched on. The speed memory is
empty.
The CCS is switched on. The set speed is
displayed in large figures. WARNING
Observe the safety warnings ››› in Control
and warning lamps on page 71. Operating the cruise control system*
Read the additional information carefully
›››  page 21
The value indicated in the table in brackets
(in mph, miles per hour) only refers to instru-
ment panels with indications in miles.
Changing gear in CCS mode
The CCS decelerates as soon as the clutch
pedal is pressed, intervening again automati-
cally after a gear is engaged.
Travelling down hills with the CCS
When travelling down hills the CCS cannot
maintain a constant speed. Slow the vehicle
down using the brake pedal and reduce
gears if required. B C
D Automatic off
The cruise control system (CCS) is switched
off automatically or temporarily:
●
If the system detects a fault that could af-
fect the working order of the CCS.
● If you press and maintain the accelerator
pedal for a certain time, driving faster than
the stored speed.
● If the dynamic driving control systems in-
tervene (e.g. ASR or ESC).
● If the airbag is triggered.
Adaptive Cruise Control ACC* Introduction Fig. 149
Detection area. The adaptive cruise control (ACC)
is an exten-
sion of the normal cruise control system
(CCS)
›
›› .
The ACC function allows the driver to estab-
lish a cruise speed of between 30 and 160
km/h (18 and 100 mph), as well as the tem-
porary distance required with regard to the
vehicle in front. The ACC function will adapt
the vehicle's cruise speed at all times, main-
taining a safe distance with the vehicle in
front.
The ACC function is based on a radar sensor
that can measure the distance to the vehicles
in front.
If the vehicle is equipped with automatic
gearbox, the ACC can brake the vehicle until
it stops completely if a vehicle in front of it
stops.
Driver intervention prompt
During driving, the ACC is subject to certain
limitations inherent in the system. In other
words, in certain circumstances the driver will
have to adjust speed him or herself, as well
as the distance from other vehicles.
In this case, the instrument panel screen will
warn you to intervene by applying the brake
and a warning tone will be heard
››› page 153 .
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151Technical specifications
Advice
Operation
Safety
The essentials

Driver assistance systems
Distance margin selected, the ACC is in-
active.
Vehicle detected in front. The ACC is ac-
tive.
Adjustment of the temporary distance
from the vehicle in front with a program-
med speed.
Temporary distance adjustment from the
vehicle in front with a programmed
speed.
Warning and control lamps
››› in Control and warning lamps on
page 71 . The speed reduction by the ACC to
maintain the distance from the vehi-
cle in front is not sufficient.
Brake! apply the foot brake! Driver intervention prompt.

The ACC is not currently available.
a)
With the vehicle stationary, switch off the engine and
start it up again. Check the radar sensor visually for dirt,
ice or knocks. If it is still unavailable, refer to a special-
ised workshop to have the system inspected.
a)
The symbol on the instrument panels with colour display is in
colour. 
The ACC is active.
No vehicle is detected in front. The programmed speed
remains constant.2
3
4
5 
If the symbol is white: the ACC is ac-
tive.
A vehicle in front has been detected. The ACC adjusts
speed and distance from the vehicle in front. 
If the symbol is grey: the ACC is not
active.
The system is switched on, but is not adjusting.


The ACC is active.
Some warning and control lamps will light up
briefly when the ignition is switched on to
check certain functions. They will switch off
after a few seconds.
WARNING
Observe the safety warnings ››› in Control
and warning lamps on page 71. Note
When the ACC is connected, the indications
on the instrument panel screen may be con-
cealed by warnings from other functions,
such as an incoming call. Radar sensor
Fig. 151
On the front bumper: radar sensor. A radar sensor is installed on the front bump-
er to determine the traffic situation
››› Fig. 151 1 . This sensor can detect vehi-
cles in front up to a distance of approximately
120 m.
The radar sensor's visibility may be impaired
by dirt, mud or snow, or by environmental in-
fluences such as rain or mist. In this case the
adaptive cruise control (ACC) does not work.
The instrument panel displays the following
message: ACC: No sensor vision! If necessary
clean the radar sensor ››› .
When the radar sensor begins to operate
properly again, the ACC will automatically be
available again. The message on the instru-
ment panel screen will switch off and the ACC
will be reactivated again. »
153
Technical specifications
Advice
Operation
Safety
The essentials

Operation
ACC operation may be affected by a strong ra-
dar reverse reflection. This may occur, for ex-
ample, in a closed car park or due to the
presence of metallic objects (e.g. rails on the
road or sheets used in road works).
The area in front of and around the radar sen-
sor should not be covered with adhesives,
additional or similar headlights, as this may
negatively affect ACC operation.
If structural modifications are made to the ve-
hicle, for example, if the suspension is low-
ered or the front spoiler is modified, ACC op-
eration may be affected. So structural modifi-
cations should only be made by specialised
workshops. SEAT recommends visiting a SEAT
dealership for this purpose.
If work is done incorrectly on the front of the
vehicle, the radar sensor could be damaged
or lose its settings, and ACC operation may
be affected. So repair work should only be
made by specialised workshops. SEAT recom-
mends visiting a SEAT dealership for this pur-
pose. CAUTION
If you have the sensation that the radar sen-
sor is damaged or has lost its settings, dis-
connect the ACC. This will avoid possible
damage. If this occurs have it adjusted. ● The sensor may become damaged or lose
its settings when knocked, for example, dur- ing a parking manoeuvre. This may compro-
mise the system's efficacy or disconnect it.
●
Repairs to the radar sensor require special-
ist knowledge and special tools. SEAT recom-
mends visiting a SEAT dealership for this pur-
pose.
● Clean away the snow with a brush and the
ice preferably with a solvent-free de-icer
spray. Operating the Adaptive Cruise Control
ACC
Fig. 152
On the left of the steering column:
third lever for operating the Adaptive Cruise
Control. Fig. 153
On the left of the steering column:
third lever for operating the Adaptive Cruise
Control. When the Adaptive Cruise Control (ACC) is
connected, the green control lamp  will
light up on the instrument panel, and the
programmed speed and ACC status will be
displayed
››› Fig. 150 .
C ondition
s for the adaptive cruise control to
be activated
● The selector lever must be at the D or S po-
sition or in the tiptronic selection track. In
manual gearbox any forward gear must be
engaged, except the 1st gear.
● In vehicles with manual gearbox, if there is
no programmed speed, drive at least at
30 km/h (18 mph).
Speed control
When the ACC is connected, speed can be
programmed and adjusted. The programmed
154

Operation
The following conditions may lead the ACC
not to react:
● If the accelerator is pressed.
● If there is no gear engaged.
● If the ESC is controlling.
● If the driver is not wearing his/her seat
belt.
● If several brake lights of the vehicle or elec-
trically connected trailer are damaged.
● If the vehicle is reversing.
● Driving faster than 160 km/h (100 mph). WARNING
There is a danger of rear collision when the
minimum distance to the vehicle in front is
exceeded and the speed difference between
both vehicles is so great that a speed reduc-
tion by the ACC will not suffice. In this case
the brake pedal should be applied immedi-
ately.
● The ACC may not be able to detect all situa-
tions properly.
● “Stepping” on the accelerator may cause
the ACC not to intervene in braking. Driver
braking will have priority over intervention by
the speed control or adaptive cruise control.
● Always be ready to use the brakes!
● Observe country-specific provisions gov-
erning obligatory minimum distances be-
tween vehicles. Note
● The programmed speed is erased once the
ignition or the ACC are switched off.
● When the traction control system (ASR) is
deactivated during acceleration or else the
ESC is activated in Sport* Mode ( ››› page 81),
the ACC switches off automatically.
● In vehicles with the Start-Stop system, the
engine switches off automatically during the
ACC stopping phase and restarts automatical-
ly to begin driving. Vehicles with an automatic gearbox
If the vehicle is equipped with automatic
gearbox, the ACC can brake the vehicle until
it stops completely if a vehicle in front of it
stops.
The ACC will still be available for a few sec-
onds. The vehicle will restart by itself if the
vehicle in front moves (traffic jam assistant).
Disconnection criteria
The ACC will switch off if the driver applies
the brake pedal or the driver's door is
opened.
If the vehicle in front remains stationary for
more than 3 seconds, the ACC will also
switch off for safety reasons.
In this case the
driver should take control and apply the
brake. In the latter case, when the ACC is switched
off with the vehicle stationary, the vehicle
has to be braked by the pedal, since al-
though the car is idling it can move, as there
is a gear engaged.
Restarting the vehicle with the ACC manually
The ACC can be activated again by moving
the lever to position
2
››› Fig. 154 . WARNING
Your vehicle can start up even if there is an
obstacle between your vehicle and the vehi-
cle detected in front. Risk of accident! CAUTION
● If your vehicle with ACC does not start up
as expected, you can drive off by briefly step-
ping on the accelerator.
● The Start-Stop system usually acts if you
are driving with ACC. 156

Driver assistance systems
Interrupting control Fig. 154
On the left of the steering column:
third lever for operating the Adaptive Cruise
Control. Important: the ACC is active.
Interrupting control during driving
● Move the lever to the position 3 . The
ACC
standby message is displayed to the driver.
or
● Br ak
e.
● To resume the programmed speed, turn the
lever to position 2 .
Interrupt speed control with the vehicle
stationary
Applies to vehicles with automatic gearbox:
● Move the lever to the position 3 . The
ACC
standby message is displayed to the driver. ●
To r
esume control, apply the brake and turn
the lever to position 2 .
WARNING
It is dangerous to activate control and resume
the programmed speed if the road, traffic or
weather conditions do not permit this. Risk of
accident! Setting the distance
Fig. 155
Control lever for: setting the dis-
tance. ●
To display the distance currently program-
med, briefly press the rocking button
››› Fig. 155
.
● To inc

rease/reduce the distance one level,
press the rocking button again towards the
left/right. The instrument panel display
modifies the distance between both vehicles. If the vehicle approaches another vehicle de-
tected in front of it, the ACC reduces the
speed accordingly and then controls the ad-
justed distance. If the vehicle detected in
front accelerates, the adaptive cruise control
will also accelerate up to the target speed
programmed at most.
The greater the speed, the greater the dis-
tance in metres should be
››› . We recom-
mend the setting Distance 3
. WARNING
With regard to distance setting, the driver is
responsible for observing country-specific
legislation. Message texts
 ACC not available
The system can no longer continue to guar-
antee safe vehicle detection and will be de-
activated. The sensor has lost its setting or is
damaged. Take the vehicle to a specialised
workshop and have the fault repaired.
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157
Technical specifications
Advice
Operation
Safety
The essentials

Operation
 ACC: currently not available. No sensor
v i
sion

ACC and Front Assist: currently not
available. No sensor vision
This message will be displayed to the driver if
the radar sensor's vision is impaired due, for
example, to leaves, snow, heavy fog or dirt.
Clean the sensor.
 ACC: currently not available. Gradient too
st

eep
The maximum road slope has been excee-
ded, hence safe ACC operation cannot be
guaranteed. The ACC cannot be switched on.
 ACC: only available in D, S or M
Select the D/S or M position on the selector
lever.
 ACC: parking brake applied
The ACC is deactivated if the parking brake is
applied. The ACC is available once again after
the parking brake is released.
 ACC: currently not available. Intervention
of stability control
The message for the driver is displayed when
the electronic stability control (ESC) inter-
venes. In this case, the ACC is automatically
switched off.  ACC: Take action!
The message for the driver is displayed if,
when the vehicle starts up on a hill with a
mild slope, the vehicle rolls back even al-
though the ACC is activated. Apply the brake
to stop the vehicle from moving/colliding
with another vehicle.
 ACC: speed limit
The mes

sage for the driver is displayed if, in
vehicles with manual gearbox, the current
speed is too low for the ACC mode.
The speed to be stored must be at least 30
km/h. The cruise control system switches off
if the speed falls below 20 km/h.
 ACC: available as of the 2nd gear
The ACC is operational as of the 2nd gear
(manual gearbox).
 ACC: engine speed
The message for the driver is displayed if,
when the AAC accelerates or brakes, the driv-
er does not shift up or down a gear in time,
which means exceeding or not reaching the
permissible engine speed. The AAC switches
itself off. A buzzer warning is heard.
 ACC: clutch pressed
Vehicles with a manual gearbox: pressing the
clutch pedal for longer abandons control
mode.   
Three white dots appear if a setting made
with the control lever cannot be performed.
For example, if when the vehicle is stationary
the ACC cannot be activated because the
driver is not wearing the seat belt.
Door open
Vehicles with automatic gearbox: the ACC
cannot be activated with the vehicle station-
ary and the door open.
Deactivating the Adaptive Cruise
Control ACC temporarily in certain
situations In the following situations the Adaptive
Cruise Control (ACC) should be deactivated
due to the system's limitations
››› :
● When changing lanes, on tight bends and
roundabouts, in acceleration and decelera-
tion lanes on motorways or in sections with
road works to prevent involuntary accelera-
tion to reach the programmed speed.
● When going through a tunnel, as operation
could be affected.
● On roads with several lanes, when other ve-
hicles are driving more slowly in the overtak-
ing lane. In this case, slower vehicles will be
overtaken on the right.
158

Driver assistance systems
● In case of heavy rain, snow or spray, as the
vehicle in front might not be detected proper-
ly or, in certain circumstances, might not be
detected at all. WARNING
If the ACC does not switch off in the situa-
tions described, serious accidents and inju-
ries may occur.
● Always switch off the ACC in critical situa-
tions. Note
If you do not switch off the ACC in the afore-
mentioned situations, you may commit a le-
gal offence. Special driving situations
Fig. 156
(A) Vehicle on a bend. (B) Motorcy-
clist ahead out of range of the radar sensor. Fig. 157
(C) Vehicle changing lanes. (D) One
vehicle turning and another stationary. The adaptive cruise control (ACC) has certain
physical limitations inherent in the system.
For example, certain reactions of the ACC, in
certain circumstances, may be unexpected or
come late from the driver's point of view. So
pay attention in order to intervene if necessa-
ry.
For example, the following traffic situations
call for the utmost attention:
»
159Technical specifications
Advice
Operation
Safety
The essentials