tow Seat Exeo ST 2012 Owner's Guide

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

212Trailer towing
WARNING
● If it is not possible to set the spring mechanism to the ready position
as described above, do not use the ball joint. Please contact a special-
ised workshop.
● To avoid injury, keep your hands away from the knob or cover piece
when inserting the ball joint in the mounting fixture. Otherwise, you
could be injured.

Fitting the ball joint (step 4)
Fig. 171 Removable tow-
ing bracket: Safety check
Fig. 172 Rear bumper:
Pulling down the power
socket
Safety check
– Check that the green marking A
⇒ Fig. 171 on the knob is in-
side the black zone marked on the ball joint.
– Check that the knob is directly against the ball joint, so that
there is no gap between the knob and the ball joint (arrow).
– Check that the ball joint is locked and the key is removed so
that the knob cannot be pulled out ⇒ 
.
– Check that the ball joint fits tightly in the mounting fixture (try
moving it about to check).
Towing socket
– To plug in the electrical connection for the trailer, pull down the
socket below the bumper ⇒ Fig. 172.
If the safety check is not satisfactory, the ball joint must be fitted again
properly. 

213
Trailer towing
WARNING
To avoid accidents, the ball joint must meet all the safety requirements
listed in the safety check. The towing bracket must not be used if any one
of these requirements is not met. If this is the case, you should contact a
specialised workshop.

Removing the ball joint
Fig. 173 Removable tow-
ing bracket: Removing
the ball joint
Fig. 174 Rear bumper:
fitting the cover piece
– Insert the key in the lock 1
⇒ Fig. 173 on the knob.
– Unlock the ball joint by turning the key to the red marking.
– Take hold of the ball joint and pull out the knob in direction A
.
– Keep hold of the knob and turn it as far as it will go in direction
B
.
– Release the knob. The spring mechanism will remain in the
ready position ⇒ 
.
– Pull the ball joint down out of the mounting fixture 1
⇒ Fig. 174. The cover piece will cover the mounting fixture auto-
matically 2.
– Put away the ball joint attachment under the floor panel in the
luggage compartment.
– Move the socket back up to its original position. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

214Trailer towing
WARNING
● To avoid injury, keep your hands away from the locking pin and the
release pin when releasing the locking mechanism.
● Make sure that the cover piece is properly engaged on the mounting
fixture on the vehicle. Otherwise the ball joint may fail to engage secure-
ly if dirt accumulates in the mounting fixture.

Fitting a towing bracket*
It is possible to fit a towing bracket to the rear of the vehicle.
Fig. 175 Attachment
points for towing bracket
If a towing bracket is to be fitted after the vehicle is purchased, this must be
completed according to the instructions of the towing bracket manufacturer. 

215
Trailer towing
The attachment points for the towing bracket A
are on the lower part of the
vehicle.
The distance between the centre of the ball coupling and the ground should
never be lower than the indicated value, even with a fully loaded vehicle
and including the maximum drawbar load.
Elevation values for securing the towing bracket:
65 mm (minimum)
403
629 mm
1112 mm (vehicle with max. load)
from 350 to 420 mm (vehicle with max. load)
1000 mm
Fitting a towing bracket
● Driving with a trailer involves an extra effort for the vehicle. Therefore,
before fitting a towing bracket, please contact a Technical Service to check
whether your cooling system needs modification.
● The legal requirements in your country must be observed (e.g. the fitting
of a separate warning lamp).
● Certain vehicle components, e.g. the rear bumper, must be removed and
reinstalled. The towing bracket securing bolts must be tightened using a
torque wrench, and a power socket must be connected to the vehicle's elec-
trical system. This requires specialised knowledge and tools.
● Figures in the illustration show the elevation value and the attachment
points which must be considered if you are retrofitting a towing bracket. B
CDEFG
WARNING
The towing brackets should be fitted at a specialised workshop.
● If the towing bracket is incorrectly installed, there is serious danger
of accident.
● For your own safety, please observe the instructions provided by the
manufacturer of the towing bracket.
CAUTION
● If the power socket is incorrectly installed, this could cause damage to
the vehicle's electrical system.
Note
For the Sport finish, fitting a trailer bracket is not recommended due to the
design of the bumpers. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

260If and when
● A hook for removing wheel covers* or hub caps
● Box spanner for wheel bolts
● Towing eye
● An adapter for the anti-theft wheel bolts*
Before replacing the jack in the storage bin, wind down the arm of the jack
as far as it will go.
Some of the tools listed are only provided in certain models or are optional
extras.
WARNING
● The factory-supplied jack is only designed for changing wheels on
this model. On no account attempt to use it for lifting heavier vehicles or
other loads. Risk of injury.
● Never start the engine when the vehicle is raised. Failure to do so
could result in an accident.
● If work is to be carried out underneath the vehicle, this must be se-
cured by suitable stands. Otherwise, there is a risk of injury.
 Tyre mobility system
The tyre mobility system is stored under the floor panel in
the luggage compartment.
Fig. 194 Tyre Mobility
System under floor panel
in luggage compartment
– Take hold of the handle and fold back the floor panel in the lug-
gage compartment.
– Take out the tyre mobility system.
Your vehicle is equipped with a Tyre Mobility System in case of a puncture.
The tyre mobility system consists of a container with sealing compound and
a compressor to generate the required tyre pressure.
Instructions for using the sealant compound and the compressor are inclu-
ded with the sealant can. 

262If and when
Changing a wheel
Preparation work
What you must do before changing a wheel.
– If you have a flat tyre or puncture, park the vehicle as far away
from the flow of traffic as possible. Choose a location that is as
level as possible.
– All passengers should leave the vehicle. They should wait in a
safe place (e.g. behind the roadside crash barrier).
– Apply the handbrake firmly.
– Engage first gear .
– When towing a trailer: Unhitch the trailer from your vehicle.
– Take the tools and the spare wheel ⇒  page 259 out of the lug-
gage compartment.
WARNING
If you have a puncture in heavy traffic, switch on the hazard warning
lights and place the warning triangle in a visible location. This is for your
own safety and also warns other road users.
CAUTION
If you have to change the tyre on a gradient, block the wheel opposite the
wheel being changed by placing a stone or similar object under it to prevent
the vehicle from rolling away.
Note
Please observe legal requirements when doing so. 
Changing a wheel
Change the wheel as described below.
– Remove the wheel cover .
– Loosen the wheel bolts ⇒ page 263.
– Raise the vehicle with the jack ⇒ page 264.
– Take off the wheel with the flat tyre and then put on the spare
wheel ⇒ page 265.
– Lower the vehicle.
– Tighten the wheel bolts firmly in diagonal sequence with the
box spanner ⇒ page 263.
– Replace the cover. 
After changing a wheel
After changing the wheel, there are still tasks to complete. – Place the wheel with the defective tyre in the spare wheel well
and secure it.
– Put the tools and jack back in the luggage compartment. 

271
If and when
Fuse assignment
This list shows the fuses which can be replaced relatively
easily by the owner.
No.ConsumerAmps1Air conditioner102Footwell lamps53Heated washer jets54Radiator fan55Parking aid, automatic gearbox106Air conditioner (air purity sensor), pressure sensor5
7Electronic Stability Control (ESC), brake light switch,
clutch pedal switch, steering angle sensor10
8Telephone59Lambda probe heater1010Adaptive headlights right5
11Airbag and disconnection of the front passenger air-
bag5
12Diagnostic socket1013Steering column unit1014Brake lights1015Instrument panel1016Vacant 17Tyre pressure control, rain/light sensor1018Adaptive headlights left519Start-Stop control unit1020Engine management1521Start/Stop battery power management522Vacant 23Vacant
No.ConsumerAmps24Central electrics unit for convenience equipment2025Heater blower3026Rear window heater3027Power socket for trailer (control unit)3028Fuel pump, auxiliary pump for diesel2029Radio, amplifier (with Start-Stop)2030Sliding/tilting sunroof20
31Diagnosis connection, automatic anti-dazzle interior
mirror, reverse light, automatic gearbox15
32Towing socket1533Lighter2034Rear electric windows3035Luggage compartment power socket*2036Wiper system30
37Pump for windscreen washer and headlight washer
system30
38Luggage compartment illumination, alarm1539Radio, amplifier (without Start-Stop)2040Horn2541230 volt socket3042Electronic Stability Control (ESC)2543Front electric windows3044Seat heating35
Some of the electrical items listed in the table are only fitted on certain
models or are optional extras. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

273
If and when
Changing bulbs. Halogen headlights Types of bulbs
You must only replace a bulb with a bulb of the same type. The name can be
found on the base of the bulb holder.
BulbTypeDipped beam headlights (halogen)12 V/55 W (H7 LL)Main beam headlights12 V/55 W (H1)Turn signal12 V/21 W (PY21W)Side lights12 V/5 W (W5W LL)
WARNING
● Take particular care when working on components in the engine com-
partment if the engine is warm - risk of burns!
● Bulbs are highly sensitive to pressure. The glass can break when you
touch the bulb, causing injury.
● The high voltage element of gas discharge bulbs* (xenon light) must
be handled correctly. Otherwise, there is a risk of death.
● When changing bulbs, please take care not to injure yourself on sharp
parts in the headlight housing.
CAUTION
● Remove the ignition key before working on the electric system. If not, a
short circuit could occur.
● Switch off the lights or parking lights before you change a bulb.
For the sake of the environment
Please ask your specialist retailer how to dispose of used bulbs in the prop-
er manner.
Note
● Depending on weather conditions (cold or wet), the front lights, the fog
lights, the tail lights and the turn signals may be temporarily misted. This
has no influence on the useful life of the lighting system. By switching on
the lights, the area through which the beam of light is projected will quickly
be demisted. However, the edges may continue to be misted.
● Please check at regular intervals that all lighting (especially the exterior
lighting) on your vehicle is functioning properly. This is not only in the inter-
est of your own safety, but also in that of all other road users.
● Before changing a bulb, make sure you have the correct new bulb.
● Do not touch the glass part of the bulb with your bare hands, use a cloth
or paper towel instead. Otherwise, the fingerprints left on the glass will va-
porise as a result of the heat generated by the bulb, be deposited on the
reflector and impair its surface. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications