2012 Seat Exeo sensor

27
Seat belts
WARNING
● An incorrectly worn seat belt increases the risk of severe injuries.
● Before every trip, instruct your passengers to adjust their seat belts
properly and to wear them for the whole journey.
● Read and always observe information and warnings concerning the
use of seat belts ⇒ page 21.

Seat belt tensioners
Function of the seat belt tensioner
During a frontal collision, the seat belts on the front seats
are retracted automatically. The seat belts for the front occupants are equipped with belt tensioners.
Sensors will trigger the belt tensioners during severe head-on, lateral and
rear collisions only if the seat belt is being worn. This retracts and tightens
the seat belts, reducing the forward motion of the occupants.
The seat belt tensioner can be triggered only once.
The seat belt tensioners will not be triggered in the event of a light frontal,
side or rear collision, if the vehicle overturns or in situations where no large
forces act on the front, side or rear of the vehicle.
Note
● If the seat belt tensioners are triggered, a fine dust is produced. This is
normal and it is not an indication of fire in the vehicle.
● The relevant safety requirements must be observed when the vehicle or
components of the system are scrapped. Specialised workshops are famili-
ar with these regulations, which are also available to you. Service and disposal of belt tensioners
The belt tensioners are components of the seat belts that are installed in
the seats of your vehicle. If you work on the belt tensioners or remove and
install parts of the system when performing other repair work, the seat belt
may be damaged. The consequence may be that, in the event of an acci-
dent, the belt tensioners function incorrectly or not at all.
So that the effectiveness of the seat belt tensioner is not reduced and that
removed parts do not cause any injuries or environmental pollution, regula-
tions, which are known to the specialised workshops, must be observed.
WARNING
● Improper use or repairs not carried out by qualified mechanics in-
crease the risk of severe or fatal injuries. The belt tensioners may fail to
trigger or may trigger in the wrong circumstances.
● Never attempt to repair, adjust, remove or install parts of the belt ten-
sioners or seat belts.
● The seat belt tensioner, seat belt and automatic retractor cannot be
repaired.
● Any work on the belt tensioners and seat belts, including the removal
and refitting of system parts in conjunction with other repair work, must
be performed by a specialised workshop only.
● The belt tensioners will only provide protection for one accident and
must be changed if they have been activated.

Safety FirstOperating InstructionsPractical TipsTechnical Specifications

38Airbag system
Side airbags*
Description of side airbags
The airbag system is not a substitute for the seat belts.
Fig. 23 Side airbag in
driver seat
The front side airbags are located in the driver seat and front passenger
seat backrests ⇒ Fig. 23. The rear side airbags* are located in the rear
wheel housing lining. The locations are identified by the text “AIRBAG” in
the upper region of the backrests and in the rear wheel housing lining.
Together with the seat belts, the side airbag system gives the front seat oc-
cupants additional protection for the upper body in the event of a severe
side collision ⇒ page 40, Safety notes on the operation of the side airbag system.
In a side collision, the side airbags reduce the risk of injury to passengers
on the front seats to the areas of the body facing the impact. In addition to
their normal function of protecting the occupants in a collision, the seat
belts also hold the passengers in the front seats and the outer rear seats in
a position where the side airbags can provide maximum protection. The airbag system is not a substitute for seat belts, but it is an integral part
of the vehicle's overall passive safety system. Please bear in mind that the
airbag system can only work effectively when the occupants are wearing
their seat belts. Therefore, it is most important to wear the seat belts at all
times, not only because this is required by law in most countries, but also
for your safety
⇒ page 18, Brief introduction.
The side airbag system will not be triggered if:
● the ignition is switched off
● there is a minor side collision
● there is a frontal collision
● there is a rear-end collision
● the vehicle turns over
The main parts of the airbag system are:
● an electronic control and monitoring system (control unit)
● The front side airbags in the backrests of the front seats and the rear
side airbags in the lining of the rear wheel housing
● a warning lamp  on the instrument panel ⇒ page 30
The airbag system operation is monitored electronically. The airbag warning
lamp will light up for approx. 4 seconds every time the ignition is switched
on (self-diagnosis).
WARNING
● In a side collision, the side airbags will not work, if the sensors do
not correctly measure the pressure increase on the interior of the doors,
due to air escaping through the areas with holes or openings in the door
panel.
● Never drive the vehicle if the interior panels have been removed.
● Never drive if the interior door panels have been removed or if the
panels have not been correctly fitted. 

40Airbag system
The special design of the airbag allows the controlled escape of the propel-
lant gas when an occupant puts pressure on the bag. Thus, the head and
chest are surrounded and protected by the airbag. 
Safety notes on the operation of the side airbag system
If airbags are used correctly, they can considerably reduce
the risk of injury in side impact collisions.
WARNING
● If you do not wear a seat belt, if you lean forward, or are not seated
correctly while the vehicle is in motion, you are at a greater risk of injury
if the side airbag system is triggered in an accident.
● In order for the side airbags to provide their maximum protection, the
prescribed sitting position must always be maintained with seat belts
fastened while travelling.
● Occupants of the outer seats must never carry any objects or pets in
the deployment space between them and the airbags, or allow children
or other passengers to travel in this position. It is also important not to
attach any accessories (such as cup holders) to the doors. This would im-
pair the protection offered by the side airbags.
● The built-in coat hooks should be used only for lightweight clothing.
Do not leave any heavy or sharp-edged objects in the pockets.
● Great forces, such as hard blows or kicks, must not be exerted upon
the backrest bolster because the system may be damaged. In this case,
the side airbags would not be triggered.
● Under no circumstances should protective covers be fitted over seats
with side airbags unless the covers have been approved for use in your
vehicle. Because the airbag is triggered from the side of the backrest, the
WARNING (Continued)
use of non-approved seat covers would obstruct the side airbag, serious-
ly reducing the airbag's effectiveness ⇒ page 221, Accessories, replace-
ment of parts and modifications.
● Any damage to the original seat upholstery or around the seams of
the side airbag units must be repaired immediately by a specialised
workshop.
● The airbags provide protection for just one accident; replace them
once they have deployed.
● When children assume an incorrect sitting position, they expose
themselves to an increased risk of injury in the event of an accident. This
is particularly the case if the child is travelling on the front passenger
seat and the airbag system is triggered in an accident; this could have
critical consequences including serious injury or death ⇒ page 46,
Child safety.
● Any work on the side airbag system or removal and installation of the
airbag components for other repairs (such as removal of the front seat)
should only be performed by a specialised workshop. Otherwise, faults
may occur during the airbag system operation.
● Do not attempt to modify components of the airbag system in any
way.
● The side and head airbags are managed through sensors located in
the interior of the front doors. To ensure the correct functioning of the
side and head airbags neither the doors nor the door panels should be
modified in any way (e.g. fitting loudspeakers). If the front door is dam-
aged, the airbag system may not work correctly. All work carried out on
the front door must be made in a specialised workshop.


43
Airbag system
WARNING (Continued)
● Any work on the curtain airbag system or removal and installation of
the airbag components for other repairs (such as removal of the roof lin-
ing) should only be performed by a specialised workshop. Otherwise,
faults may occur during the airbag system operation.
● Do not attempt to modify components of the airbag system in any
way.
● The side and head airbags are managed through sensors located in
the interior of the front doors. To ensure the correct functioning of the
side and head airbags neither the doors nor the door panels should be
modified in any way (e.g. fitting loudspeakers). If the front door is dam-
aged, the airbag system may not work correctly. All work carried out on
the front door must be made in a specialised workshop.

Safety FirstOperating InstructionsPractical TipsTechnical Specifications

80Cockpit
Engine oil level correct
If the  symbol flashes and the engine oil level is correct, obtain profes-
sional assistance. Do not drive on! Do not continue to run the engine, even
at idle speed .
Note
The oil pressure warning lamp  is not an indicator for the oil level. The oil
level should therefore be checked regularly, preferably every time you fill
the tank. 
Yellow symbols
A yellow symbol indicates a warning.
Fig. 55 Display: Fuel lev-
el low
Brake light failure warning light⇒ page 81
Fuel level low⇒ page 81
Engine speed governing⇒ page 81
Check engine oil level⇒ page 81
Engine oil sensor faulty*⇒ page 81
Diesel particulate filter* obstructed⇒ page 81
Photosensor/rain sensor faulty⇒ page 82
Brake pad worn⇒ page 82
Speed warning 1⇒ page 82
Dynamic headlight range control* faul-
ty⇒ page 82
Adaptive headlights* faulty⇒ page 82
Washer fluid level low*⇒ page 82
Speed warning 2*⇒ page 82
Battery voltage too high or too low*⇒ page 82
Bulb monitor*⇒ page 83
Tyre pressure monitoring system*
Loss of pressure⇒ page 90
Tyre pressure monitoring system*
System not available⇒ page 67
Start-Stop system fault*⇒ page 171 

81
Cockpit
Yellow symbols are used to indicate a Priority 2 fault (warning).
Yellow symbols are accompanied by one warning buzzer. The function indi-
cated should be checked as soon as possible. If several Priority 2 faults are
detected at the same time, the symbols are displayed one after the other for
about 2 seconds at a time. 
Brake light failure 
This warning light will appear on the upper part of the display if any of the
brake lights has failed. A text message in the central part of the display indi-
cates which brake light has failed (left or right). 
Fuel level low 
When this symbol  comes on for the first time, there are about 8 to 10 li-
tres of fuel left in the tank. You should fill up as soon as possible
⇒  page 223. 
Engine speed governing 
Max. engine speed XXXX rpm
There is a fault in the engine management. In addition, the warning lamp 
on the instrument panel will light up. The engine speed will be governed to
the speed displayed in the driver information system. Please ensure that
the engine speed does not exceed the speed shown (for example, when
changing down a gear).
Take the vehicle to a specialised workshop immediately to have the fault re-
paired. Checking the engine oil level

If the  symbol lights up, please check the engine oil level as soon as pos-
sible ⇒ page 230. Top up the oil at the next opportunity ⇒ page 231.
Engine oil sensor defective* 
If the  symbol lights up, take the vehicle to a specialised workshop and
have the oil level sensor checked. Until then it is advisable to check the oil
level every time you fill up with fuel ⇒ page 230. 
Diesel particulate filter obstructed 
If the symbol  lights up, you can contribute towards automatic filter
cleaning by driving in the right manner. To do this, drive about 15 minutes
in 4th or 5th gear (automatic gearbox: S gear range) at a speed of 60 km/h,
with the engine running at approximately 2000 rpm. The increase in temper-
ature will burn off any soot in the filter. When cleaning is successful, the
symbol switches off.
If the symbol  does not turn off, or the three lamps turn on (particulate
filter , emission control system fault  and heaters ), take the vehicle
to a specialised workshop to repair the fault.
For further information on the diesel particulate filter, see ⇒ page 196.
WARNING
It is essential that you adjust your speed to suit the weather, road, ter-
rain and traffic conditions. The recommended driving speed must never
lead to the driver disregarding the traffic regulations.

Safety FirstOperating InstructionsPractical TipsTechnical Specifications

82Cockpit
Photosensor/rain sensor faulty 
 Automatic headlights / automatic wipers faulty
If the  symbol lights up, this means that the photosensor/rain sensor is
not working. For safety reasons, the dipped beam headlights will then be
switched on permanently when the light switch is set to the AUTO position.
However, you can still switch the lights on and off in the normal way with
the light switch. If the rain sensor is faulty, the functions operated via the
windscreen wiper lever will still be available. You should have the photosen-
sor/rain sensor checked by a specialised workshop as soon as possible. 
Worn brake pads 
If the  symbol lights up, have the front brake pads (and, for safety rea-
sons, the rear pads as well) inspected by a specialised workshop. 
Speed warning 1 
If the  symbol lights up, this means you are exceeding the speed that has
been pre-set with the speed warning function. You should reduce your
speed accordingly ⇒ page 83. 
Headlight range control faulty 
This symbol  indicates a malfunction in the dynamic headlight range con-
trol. Take the vehicle to a specialised workshop to have the dynamic head-
light range control function repaired. Adaptive headlights* faulty

 Adaptive headlights faulty
This symbol  indicates that the adaptive headlight system is faulty. Take
the vehicle to a specialised workshop to have the headlights or the adap-
tive headlight control unit repaired. 
Washer fluid level low 
If the  symbol lights up, top up the fluid for the windscreen washer and
headlight washer system* ⇒ page 234. 
Speed warning 2 
If the  symbol lights up, this means you are exceeding the speed that has
been pre-set. You should reduce your speed accordingly ⇒ page 83.
Battery voltage too high or too low 
If the  symbol lights up, take the vehicle to a specialised workshop and
have the following items checked:
● Poly V-belt
● Battery condition
It is also advisable to check whether the alternator warning lamp has come
on ⇒ page 70. 

90Cockpit
Controlling the menu
The menu display is called up via the Reset button and the
rocker switch on the windscreen wiper lever. Use these con-
trols to make checks and adjust the settings.
Fig. 63 Windscreen wip-
er lever: Reset button
and rocker switch
Functions of the Reset

B ⇒ 
Fig. 63 and the rocker switch A:
Activating the menu
– Press the Reset
button until the menu display
⇒ Fig. 62 ap-
pears.
Selecting and setting
– Press the rocker switch to select one of the menus. Press "up"
or "down" on the switch to select the options accordingly.
Entering and confirming
– Press the Reset
button. Use the rocker switch to select the menus and adjust various values. The se-
lected values are highlighted on a red background.
By pressing the
Reset
button, you can confirm the option you have selected
or the value you have set. Selected functions are marked with a tick.
The following symbols are used:
CursorFunction selectedRed background (active
function)
TickSelected
BoxNot selected
Triangle pointing upwardsPrevious page
Triangle pointing down-
wardsNext page
Tyre pressure monitoring* Introduction
The tyre pressure monitoring system constantly checks the
pressure of the tyres.
The system warns the driver in the event of a loss of pressure by means of
symbols and messages in the instrument panel display. The system works
with the help of the ABS sensors in the wheels.
Please bear in mind that the tyre inflation pressure is also influenced by the
temperature of the tyre. Tyre pressure increases about 0.1 bar for each 10 °C
in tyre temperature increase. The tyre heats up while the vehicle is being 