2012 Seat Exeo ST lock

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Intelligent technology
Practical Tips Intelligent technology
Electronic Stability Control (ESC)
General Observations
The Electronic Stability Control increases the vehicle's stabil-
ity on the road.
Fig. 163 Centre console
with ESC switch
The ESC is designed to increase the degree of control in situations where
the vehicle approaches the limits of adhesion, especially when accelerating
and cornering. It reduces the risk of skidding and improves stability in all
road conditions. The system is active across the entire speed range. The anti-lock brake system (ABS), the electronic differential lock (EDL) and
the traction control system (ASR) are all integrated into the Electronic Stabil-
ity Control.
How it works
The ESC control unit processes data from the three integrated systems. It al-
so processes additional inputs provided by other high-precision sensors.
These register the vehicle's rotation about the vertical axis (yaw rate), later-
al acceleration, brake pressure and steering wheel angle.
The system uses the steering wheel angle and road speed to calculate the
changes of direction desired by the driver, and constantly compares them
with the actual behaviour of the vehicle. If the desired course is not being
maintained (for instance, if the vehicle is starting to skid), then the ESC
compensates automatically by braking the appropriate wheel.
The forces acting on the braked wheel bring the vehicle back to a stable
condition. If the vehicle
over swerves (tendency of the rear to leave the
road), the brakes will act on the front wheel facing the outside of the bend.
If the vehicle under swerves (tendency to leave the bend), the braking force
is applied to the rear wheel facing the inside of the bend.
The ESC works in conjunction with the ABS ⇒ page 196. If a malfunction
should occur in the ABS, the ESC will also stop working.
Deactivating
The ESC is activated automatically when the engine is started and performs
a self-test routine.
The ESC cannot be deactivated. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

196Intelligent technology
WARNING
The ESC is not able to overcome the physical limits of adhesion. Even
with ESC, you should always adjust your speed to suit the road and traffic
conditions. Please bear this in mind, especially on wet or slippery road
surfaces. Do not let the extra safety features tempt you into taking any
risks when driving. Failure to do so could result in an accident.

Anti-lock brake system (ABS)
ABS prevents the wheels from locking up under braking.
The anti-lock brake system (ABS) is an important part of the vehicle's active
safety system. However, the ABS will not necessarily guarantee shorter
stopping distances in all conditions. For instance, on loose gravel or fresh
snow on top of an icy surface (conditions which anyway require extreme
care and reduced speed), the stopping distance with ABS may even be
slightly longer.
How the ABS works
The system runs an automatic self-check when the vehicle reaches a road
speed of about 6 km/h. This may be accompanied by a noise from the ABS
pump.
When one of the wheels is turning very slowly in relation to the road speed
and is close to locking up, the system will reduce the brake pressure on that
wheel. The driver is made aware of this adjustment process by a vibration of
the brake pedal and an audible noise. This is a deliberate warning to the
driver that one or more of the wheels is tending to lock up and the ABS con-
trol function has intervened. In this situation it is important to keep the
brake pedal fully depressed so the ABS can regulate the brake application,
but do not “pump” the brake pedal.
WARNING
The grip provided by ABS is still subject to the physical limits of adhe-
sion. Always bear this in mind, especially on wet or slippery roads. If you
notice that the ABS is working (to counteract locked wheels under brak-
ing), you should reduce speed immediately to suit the road and traffic
conditions. Do not let the extra safety features tempt you into taking any
risks when driving. Failure to do so could result in an accident.
Note
If a malfunction should occur in the ABS, this is indicated by a warning lamp
⇒ page 70. 
Brake assist system
The brake assist system helps the driver to achieve optimum
braking effect.
The brake assist system helps to increase braking power and thus to ach-
ieve a shorter stopping distance. If the driver presses the brake pedal very
quickly, the brake assist system automatically boosts the braking force to
the maximum level, up to the point where the anti-lock brake function (ABS)
intervenes to stop the wheels from locking. You should then keep the brake
pedal pressed until the vehicle has braked to the required speed. The brake
assist system switches itself off as soon as you release the brake pedal.
The brake assist system will not be operative if there is a malfunction in the
ABS or the ESC. 

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Intelligent technology
WARNING
Please remember that the accident risk always increases if you drive too
fast, especially in corners or on a slippery road, or if you follow too close
behind the vehicle in front of you. An increased accident risk cannot be
compensated even by the brake assist system. Risk of accident.

Electronic differential lock (EDL)
The electronic differential lock prevents the loss of traction
caused if one wheel starts spinning. General notes
The electronic differential lock (EDL) helps the vehicle to start moving, ac-
celerate and climb a gradient in slippery conditions where this may other-
wise be difficult or even impossible.
How it works
The EDL works automatically, without the driver's involvement. With the aid
of the ABS sensors, the system monitors the rotational speed of the drive
wheels ⇒ page 196. If a considerable difference in revs is detected (approx.
100 rpm) in the speed of the drive wheels, e.g. when only one part of the
surface supporting the wheels is slippery, the system applies the brake to
slow down the skidding wheel so that more of the power is directed to the
other wheels. The systems works up to a speed of approx. 80 km/h. The
system will make noise while it is working.
Starting the vehicle
If one wheel has less grip and starts spinning (for instance, if one of the
drive wheels is on ice), keep pressing the accelerator gradually until the ve-
hicle starts moving. Overheating of the brakes
To prevent the brake disk of the braked wheel from overheating, the EDL
cuts out automatically if subjected to excessive loads. In this case, the vehi-
cle will continue to run and will have the same running properties as those
of another without EDL.
The EDL will switch on again automatically when the brake has cooled
down.
WARNING
● When accelerating on a uniformly slippery surface (for instance all
four wheels on ice or snow), press the accelerator gradually and careful-
ly. Despite EDL, the drive wheels may otherwise start to spin. This could
impair the vehicle's stability. Risk of accident.
● Even with EDL, you should always adjust your speed to suit the road
and traffic conditions. Do not let the extra safety features tempt you into
taking any risks when driving. Failure to do so could result in an accident.
Note
If the ABS warning lamp lights up, this can also mean there is a fault in the
EDL. Take the vehicle to a specialised workshop as soon as possible. 
Traction control system (ASR)
The traction control system prevents the drive wheels from
spinning when the vehicle is accelerating. General notes
The traction control system (ASR) is one of the functions incorporated in the
Electronic Stability Control (ESC) 
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207
Trailer towing
Where possible, operate the trailer with the maximum permitted drawbar
load on the ball joint of the towing bracket, but do not exceed the specified
limit.
Tyre pressure
Check the tyre pressures on your vehicle, and adjust for “full load” condi-
tions (refer to the sticker listing the tyre pressures on the door pillar). It may
also be necessary to adjust the tyre pressures on the trailer according to the
recommendations of the trailer manufacturer.
Exterior mirrors
Check whether you can see enough of the road behind the trailer with the
standard mirrors. If this is not the case you should have additional mirrors
fitted. The two exterior mirrors should be fitted on folding arms. Adjust the
mirrors to give sufficient rear vision.
Headlights
Before starting a journey, check the headlight beam settings with the trailer
hitched up. If necessary, alter the height of the headlight beams by means
of the headlight range control. See ⇒ page 121.
Power supply
When you remove the ignition key, the power supply to the trailer is inter-
rupted.
Removable ball joint coupling
Vehicles with a factory-fitted towing bracket are equipped with a removable
ball joint coupling. This is stored in the spare wheel well in the luggage
compartment together with the necessary fitting instructions.
Note
If you frequently tow, we recommend you also have the vehicle serviced be-
tween services. Notes on towing
Towing a trailer involves additional attention by the driver.
Weight distribution
The weight distribution of a loaded trailer with an unladen vehicle is very
unfavourable. However, if this cannot be avoided, drive extra slow to allow
for the unbalanced weight distribution.
Speed
The stability of the vehicle and trailer is reduced with increasing speed.
Therefore, it is advisable not to drive at the maximum permissible speed in
unfavourable road, weather or wind conditions. This especially applies
when driving downhill.
You should always reduce speed immediately if the trailer shows the slight-
est sign of swaying. Never try to stabilise the trailer by accelerating.
Anticipate hazards and brake in good time. If towing a trailer with an inertia
brake, first brake gently and then harder. This will prevent brake tapping by
the trailer wheels when they lock. Select a low gear in due course before go-
ing down a steep downhill. This enables you to use the engine braking to
slow down the vehicle.
Swaying and pitching can be reduced by stabiliser aids. We recommend
having stabiliser aids installed when towing trailers with a high trailer
weight. They can be purchased and installed at a Technical Service.
Reheating
When climbing long hills in hot weather with the engine running fast in low
gear, you should keep an eye on the coolant temperature gauge ⇒ page 62.
Reduce speed immediately if the needle moves to the right end of the scale.
If the temperature warning lamp  in the instrument panel should start
flashing, stop the vehicle and let the engine cool down by running it at
idling speed for a few minutes. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

208Trailer towing
Equipment and accessories
Before mounting equipment and accessories (e.g. bicycle
rack) please observe the following notes.
Fig. 164 Load distribu-
tion of equipment and ac-
cessories
The equipment/accessories mounted must not protrude more than 700 mm
from the ball joint 1
.
The total weight (mounted equipment plus the load) must not exceed 75 kg.
The maximum load depends on where the centre of gravity lies.
The maximum weight decreases as the distance between the centre of grav-
ity and the ball joint 1
increases.
The following limits apply:
If the distance is 300 mm, the total weight (incl. the equipment mounted) A
must not exceed 75 kg.
If the distance is 600 mm, the total weight (incl. the equipment mounted) B
must not exceed 35 kg. Only bicycle racks for
a maximum of three bicycles may be used.
Equipment and accessories mounted on the towing bracket
SEAT recommends that you only mount equipment (e.g. bicycle rack) on the
towing bracket which has been officially approved.. If you wish to attach
other equipment please make sure that it has been approved by the manu-
facturer for use on the towing bracket. If you mount unsuitable equipment,
this can cause damage to the towing bracket. In an extreme case, damage
to the towing bracket could cause it to break ⇒ 
.
WARNING
● If you wish to mount equipment which has not been approved by
SEAT, please ensure that it is suitable for use on SEAT vehicles.
● Use of unsuitable equipment can result in severe damage to the tow-
ing bracket. The towing bracket could then break while pulling a trailer
and cause an accident.
● Never use tools of any kind when fitting and removing the ball joint.
This would damage the locking device, no longer guaranteeing the cor-
rect working order of the bracket. This could lead to an accident.


209
Trailer towing
Removable towing bracket Introduction
Special care is required when fitting and removing the tow-
ing bracket.
Fig. 165 Luggage com-
partment: Spare wheel
with towing bracket
The removable ball joint attachment for the towing bracket is stored under
the floor panel in the luggage compartment.
● Vehicles with a spare wheel
⇒ Fig. 165.
The ball joint can be fitted and removed by hand.
Accessories mounted on the towing bracket
Please note that the ball joint attachment can be damaged by using unsuit-
able equipment that is mounted onto the towing bracket (e.g. bicycle rack).
Due to the material construction, such damage to the towing bracket dra-
matically increases safety risks and in extreme cases could lead to breakage
of the towing bracket while towing ⇒ 
. Therefore, before buying such equipment, ensure that it is suitable for
mounting onto the vehicle's towing bracket and that it is approved for this
purpose. To prevent damage to the ball joint from unsuitable equipment, we
recommend that equipment for the towing bracket be purchased through
your SEAT Dealership. Also see
⇒ page 228.
WARNING
● Only mount equipment on the towing bracket of your vehicle if you
are certain it will not damage the bracket. Use of unsuitable equipment
can result in severe damage to the towing bracket. The towing bracket
could then break while pulling a trailer and cause an accident.
● Never use tools of any kind when fitting and removing the ball joint.
This would damage the locking device, no longer guaranteeing the cor-
rect working order of the bracket. This could lead to an accident.
Note
● Do not attempt to modify or repair the ball joint or other towing bracket
components.
● Should you have any difficulties when using the towing bracket, or sus-
pect that it is not fitted properly, contact a specialised workshop.
● Before setting off, always check that the ball joint is secured properly
⇒ page 212.
● Never disengage the ball joint with the caravan / trailer still hitched or
with a bicycle rack or similar accessory still attached.
● It is advisable to remove the ball joint when you are not towing a trailer.
Make sure that the cover piece is properly fitted on the mounting fixture on
the vehicle.
● Remove the ball joint before washing the vehicle with pressurised steam
equipment. Make sure the cover piece is fitted correctly onto the mounting
fixture. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

210Trailer towing
Fitting the ball joint (step 1)
Fig. 166 Rear bumper:
Open the cover piece
– Remove the cover piece 2
⇒ Fig. 166 on the mounting fixture
1 below the bumper as far as it will go. The cover piece is held
automatically in the open position.
– Make sure the mounting fixture is clean. If not, clean it ⇒ 
.
Cont ⇒ page 210, Fitting the ball joint (step 2).
WARNING
It is important to keep the mounting fixture clean. Otherwise the ball
joint may fail to engage safely and securely. This could lead to an acci-
dent.
 Fitting the ball joint (step 2)
Fig. 167 Removable tow-
ing bracket: Ball joint
Fig. 168 Removable tow-
ing bracket: Ball joint
Make sure the ball joint is clean and undamaged
– Check the locking pin A
, release pin B, shaft section C and
knob D ⇒ Fig. 167 on the ball joint to make sure they are clean
and undamaged. 

211
Trailer towing
The spring mechanism inside the ball joint must be in the ready
position
– Check that the red marking A
⇒ Fig. 168 on the knob is inside
the black zone marked on the ball joint.
– Check that the locking pin B
is inside the holes in the shaft
section of the ball joint.
– Check that the knob protrudes visibly from the ball joint, so that
there is a clear gap C
between the knob and the ball joint.
The ball joint can only be installed if the internal spring mechanism is in the
ready position.
Cont ⇒ page 211, Fitting the ball joint (step 3). 
Fitting the ball joint (step 3)
Fig. 169 Removable tow-
ing bracket: Setting the
spring mechanism to the
"ready" position
Fig. 170 Removable tow-
ing bracket: Inserting the
ball joint
Setting the spring mechanism to the ready position (if required)
– Insert the key 1
⇒ Fig. 169 in the lock on the knob and turn it
towards the red marking.
– Pull out the knob in direction A
, hold and turn in direction Buntil the locking pin 2 engages and the release pin 3 moves
out visibly ⇒ .
Inserting the ball joint
– With the spring mechanism in the ready position, insert the ball
joint into the mounting fixture and push it upwards ⇒ Fig. 170
in the direction indicated (arrow) ⇒ 
. It should lock into posi-
tion automatically. You should now clearly hear it click into
place.
– Lock the ball joint by turning the key to the green marking.
– Remove the key.
Cont ⇒ page 212, Fitting the ball joint (step 4).

Safety FirstOperating InstructionsPractical TipsTechnical Specifications