engine Seat Exeo ST 2010 Service Manual

Driving185
Safety First
Operating Instructions
Practical Tips
Technical Specifications
This avoids overloading the locking mechanism and it will be easier to move
the selector lever from position P.
Vehicles with multitronic® gearbox: Your vehicle is equipped with the
hill
hold assist function which makes it easier to start off on a slope. The system
is activated when you press and hold the brake pedal for a few seconds.
When you release the brake pedal the braking force will be maintained for a
short moment in order to prevent the vehicle rolling back when you drive
away.
WARNING
•While you are selecting a gear and the vehicle is stopped with the
engine running, do not accelerate. Failure to do so could result in an acci-
dent.•Please note that some power will still be transmitted when you stop
temporarily with the selector lever in position D, S or R. Therefore, when
stopping you will need to press the brake with the force required to hold
the vehicle still. Failure to do so could result in an accident.•N e v e r m ov e t h e s e l e c t o r l e v e r t o R o r P w h e n d r i v i n g , a s t h i s co u l d ca u s e
an accident.•Vehicles with multitronic® gearbox: Please note that some power will
still be transmitted when you stop temporarily with the selector lever in
position D, S or R. Therefore, when stopping you will need to press the
brake with the force required to hold the vehicle still. Failure to do so could
result in an accident.
Selector lever positions
This section covers all th e selector lever positions.The current selector lever position is shown on the instrument panel display.
P - parking lock
This locks the driving wheels mechanically. The parking brake should only be
used when the vehicle is already stopped ⇒ .
The interlock button (the button on the selector lever handle) must be
pressed in and the brake pedal must be depressed before moving the
selector lever either in or out of position P. This is only possible when the igni-
tion is on.
R - Reverse gear
When reverse gear is engaged the gearbox automatically selects the lowest
gear ratio.
The reverse gear may be engaged only when the vehicle is stationary and the
engine is idling ⇒.
Fig. 155 Display:
Selector lever positions
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Driving
186To move the selector lever to position R, press in the interlock button and at
the same time press the brake pedal. Depending on the model, one or two
reverse lights will come on in selector lever position R (when ignition is
switched on).
N - Neutral (idling)
In this position the gearbox is in neutral ⇒.
D - Drive (forward)
In this position, the gearbox selects the optimal transmission ratio
depending on the engine load, speed and the dynamic gear regulation
programme (DRP).
Press the brake pedal when moving the selector lever from N to D if the
vehicle is stationary or at speeds below 5 km/h ⇒.
Under certain circumstances (e.g. when driving in mountains or towing a
trailer or caravan) it can be advantageous to switch temporarily to tiptronic
mode ⇒page 189, so that the gear ratios can be selected manually to suit
the driving conditions.
S - Sport position
To drive in sports mode, select the position S. The engine power reserve is
used to its maximum. When accelerating the gear shifts will be noticeable.
Press the brake pedal when moving the selector lever from N to S if the
vehicle is stationary or at speeds below 5 km/h ⇒.
WARNING
•Never move the selector lever to R or P when driving. Failure to do so
could result in an accident.•In selector position D or S the vehicle must always be held with the foot
brake when the engine is running. This is because an automatic gearbox
still transmits power even at idling speed, and the vehicle tends to “creep”.
The throttle must on no account be opened inadvertently (for instance by hand from the engine compartment) when a gear is engaged with the
vehicle stationary. The vehicle could otherwise start moving immediately
(in some cases even if the parking brake is engaged) and possibly cause an
accident.
•To avoid accidents, apply the parking brake and put the selector lever
in position P before opening the bonnet and working on the vehicle with
the engine running. Please observe the important safety warnings
⇒ page 229, “Work in the engine compartment”.Note
•Applies to vehicles with tiptronic gearbox:•If the lever is moved accidentally to N when driving, release the acceler-
ator and let the engine speed drop to idling before selecting D or S again.•For the sake of fuel economy (and the environment), the gearbox ratios on
some models are designed so that maximum speed is only obtained when
the gear lever is in position S.WARNING (continued)
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Driving187
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Selector lever lock
The selector lever lock prevents gears from being engaged
inadvertently, so that the vehicle is not set in motion uninten-
tionally.The selector lever lock is released as follows:
– Switch the ignition on.
–Press the brake pedal and at the same time press in the interlock
button.Automatic selector lever lock
With the ignition turned on, the selector lever is locked in the positions P and
N. To remove it from these positions, press on the brake. The following
message appears in the instrument panel as a reminder for the driver when
the selector lever is in position P or N:
WHEN STATIONARY APPLY FOOTBRAKE WHILE SELECTING GEAR The selector lever lock only works if the vehicle is stationary or driving at
speeds up to 5 km/h. At higher speeds the selector lever lock in the N posi-
tion is disengaged automatically.
The selector lever lock is not engaged if the selector lever is moved quickly
through position N (e.g. when shifting from R to D). This makes it possible, for
instance, to “rock” the vehicle backwards and forwards if it is stuck in snow
or mud. The selector lever lock engages automatically if the brake pedal is not
depressed and the lever is in position N for more than about a second.
Interlock button
The interlock button on the selector lever handle prevents the driver from
inadvertently engaging particular gears. Press the button in to disengage the
selector lever lock. The selector lever
positions in which the interlock button
has to be pressed are shown in the illustration, highlighted in colour
⇒ fig. 156 .
Safety interlock for ignition key
Once the ignition has been turned off, the key may be removed only if the gear
selector is in position P. While the key is not in the ignition, the selector lever
is locked in position P.
Kick-down feature
The kickdown feature is designed to give maximum accelera-
tion.Vehicles with multitronic
® gearbox
When the accelerator pedal is pressed right down past the point of resistance
at full throttle, the gearbox will select a lower gear ratio, depending on road
speed and engine speed. While you keep the accelerator depressed the
engine speed is automatically controlled to give your vehicle maximum accel-
eration.
Fig. 156 Selector lever
lock functions
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Driving
188Vehicles with tiptronic gearbox
When the accelerator pedal is pressed right down past the point of resistance
at full throttle, the gearbox will shift down to a lower gear, depending on road
speed and engine speed. The upshift to the next higher gear is delayed until
the engine reaches maximum rpm.
WARNING
P l eas e n o te t ha t i f t h e road s u r fa ce is s l i pp e r y o r w e t , t h e k ick- d ow n fe at u re
could cause the driving wheels to spin, which could result in skidding.Dynamic gear control programme (DCP)
The automatic gearbox is controlled electronically.The vehicle is equipped with an electronically controlled gearbox. The gear
ratios are selected automatically according to preset gearshift programmes.
When you drive at moderate speeds the gearbox will select the most econom-
ical shift programme. It will then change up early and delay the downshifts to
give better fuel economy.
If you drive at higher speeds with heavy acceleration, if you open the throttle
quickly, or if you use the kick-down or the vehicle's maximum speed, the
gearbox will automatically select the sport programme.
The gearbox is self-adapting, and continuously selects the most suitable shift
programme. At the same time, the driver can also make the gearbox switch to
the sport programme by pressing the accelerator quickly. This makes the
gearbox shift down into a lower gear ratio, allowing a more rapid acceleration
(for instance to pass another vehicle), without having to press the accelerator
all the way down into the kick-down position. After the gearbox has shifted
back up it returns to the original programme, depending on your style of
driving. Vehicles with multitronic® gearbox: the gearbox continuously adapts the
gear ratios to gradients. If the brake
pedal is pressed on a downhill gradient
the gearbox automatically shifts to a lower gear ratio. This increases the
engine braking effect.
Vehicles with tiptronic gearbox: in mountainous areas, the gearbox adapts
the gears for uphill and downhill gradients. This helps to avoid constant gear
changes on uphill gradients.
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Driving189
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Manual gear selection (tiptronic mode)
With the manual shift programm e (tiptronic) the driver can
manually select pre-programmed gears.
Switching over to the manual programme
– Move the selector lever from the position D to the right-hand
side. As soon as the selector lever has entered the tiptronic rail,
the gear engaged is displayed on the screen.
Shifting up a gear
– Briefly push the selector lever forwards (in the tiptronic gate) ⇒fig. 157 .
Shifting down a gear
– Briefly pull the selector lever backwards (in the tiptronic gate)
.With the tiptronic system, the driver can manually choose between eight (in
vehicles with multitronic) or seven (in vehicles with tiptronic) different gear
programmes. The manual programme can be selected either with the vehicle
stationary or on the move.
When accelerating, the gearbox automatically shifts up into the next gear
shortly before the maximum engine speed is reached.
If you select a gear which is lower than the gear shown on the instrument
panel display ⇒ fig. 158, the gearbox will only shift down when there is no
longer a risk of over-revving the engine.
When the vehicle slows down (for instance when braking), the gearbox auto-
matically shifts down into the next gear when the minimum engine speed is
reached.
Changing down to a lower gear increases the engine braking effect on down-
hill gradients.
When the accelerator pedal is pressed right down past the point of resistance
at full throttle, the gearbox will select a lower gear ratio, depending on road
speed and engine speed.
Fig. 157 Centre console:
Manual gear selection
(tiptronic mode)Fig. 158 Display: Manual
gear selection (tiptronic
mode)
A+
A-
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Driving
190Back-up programme
A back-up system is in place if a fault should occur in the
control system.The automatic gearbox switches to the back-up programme if a fault should
occur in the control system. This is indicated by a gear pinion symbol which
lights up on the instrument panel display.
It is still possible to move the selector lever to all positions. The manual shift
programme (tiptronic) is not available when the back-up programme is
active.
Vehicles with tiptronic gearbox: when the selector lever is in position D or S
or in the manual shift programme, the gearbox will remain in 3rd gear if 1st,
2nd or 3rd gears were engaged when the fault occurred. The gearbox will
remain in 5th gear if 4th, 5th or 6th gears were engaged. The gearbox will
then engage 3rd gear when you drive away from a standstill or after the
engine is restarted.
It will still be possible to use reverse gear in the normal way. However, the
electronic lock for reverse gear will be switched off.
Caution
Should the gearbox ever switch into the back-up programme, you should take
the vehicle to a technical service or qualified workshop as soon as possible.
Steering wheel with paddle levers
The paddle levers on the steering wheel enable the driver to
manually select pre-programmed ratios or gears.– Briefly pull the left-hand paddle lever to change down to a
lower gear.
– Briefly pull the right-hand paddle lever to change up to a higher gear.The paddle levers are activated when the selector lever is in position D or S,
or the position for the manual shift programme (tiptronic).
The manual shift programme can, of course, still be operated using the
selector lever in the centre console.
Fig. 159 Steering wheel:
tiptronic controls
A–A+
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Intelligent technology191
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Practical TipsIntelligent technologyElectronic Stability Programme (ESP)General notes
The Electronic Stability Programme increases the vehicle's
stability on the road.The ESP 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 (TCS) are all integrated into the Electronic Stability
Programme.
How it works
The ESP control unit processes data from the three integrated systems. It also
processes additional inputs provided by other high-precision sensors. These
register the vehicle's rotation about the vertical axis (yaw rate), lateral accel-
eration, 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 ESP
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 ESP works in conjunction with the ABS ⇒page 192. If a malfunction
should occur in the ABS, the ESP will also stop working.
Deactivating
The ESP is activated automatically when the engine is started and performs a
self-test routine.
Fig. 160 Centre console
with ESP switch
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Intelligent technology
194
NoteIf the ABS warning lamp lights up, this can also mean there is a fault in the
EDL. Please take the vehicle to a qualified workshop as soon as possible.Traction control system (TCS)
The traction control system prevents the drive wheels from
spinning when the vehicle is accelerating.General notes
The traction control system (TCS) is one of the functions incorporated in the
Electronic Stability Programme (ESP).
The traction control system (TCS) helps the vehicle to start moving, accelerate
or climb a gradient in slippery conditions where this may otherwise be diffi-
cult or even impossible.
How it works
The TCS acts automatically, without the driver's intervention. With the aid of
the ABS sensors ⇒page 192, the TCS monitors the speed of the drive
wheels. If the wheels start to spin, the engine speed is reduced automatically
to match the amount of grip available. The system is active across the entire
speed range.
The TCS works in conjunction with the ABS. If a malfunction occurs in the ABS,
the TCS will also be inoperative.
Note
To ensure that the TCS works properly, all four wheels must be fitted with
identical tyres. The difference in size of the wheels may lead to an undesired
reduction in engine power. Also see ⇒page 251.
BrakesGeneral notesNew brake pads
New brake pads do not provide optimal performance during the first 200 km;
first they must be “run in”. However, the reduced braking capacity may be
compensated by pressing on the brake pedal a little harder. Avoid over-
loading the brakes during run-in.
Wear
T h e r a t e o f we a r o n t h e brake pads depends a great deal on how you drive and
the conditions in which the vehicle is operated. Negative factors are, for
instance, city traffic, frequent short trips or hard driving with abrupt starts
and stops.
Wet roads or road salt
In certain conditions, such as in heavy rain, or after washing the vehicle or
driving through water, the full braking effect can be delayed by moisture (or
in winter by ice) on the discs and brake pads. In this case the brakes should
be dried by pressing the brake pedal several times.
When the speed is over 80 km/h and the windscreen wipers are on, the brake
system moves the pads towards the brake discs for a few seconds. This
occurs - without the driver knowing - at regular intervals and allows a faster
response from the brakes when driving on wet roads.
The effectiveness of the brakes can also be temporarily reduced if the vehicle
is driven for some distance without using the brakes when there is a lot of salt
on the road in winter. In this case, the layer of salt on the brake discs and pads
has to wear off before braking.
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Intelligent technology195
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Corrosion
There may be a tendency for corrosion to form on the discs and dirt to build
up on the brake pads if the vehicle is used infrequently or the brakes are not
used very often.
If the brakes are not used frequently, or if rust has formed on the disks, it is
advisable to clean off the pads and disks by braking firmly a few times at a
moderately high speed
⇒.
Faults in the brake system
If the brake pedal travel should ever increase suddenly, this may mean that
one of the two brake circuits has failed. Drive immediately to the nearest
specialised workshop and have the fault repaired. Drive there slowly and
remember that you will have to apply more pressure on the brake pedal and
allow for longer stopping distances.
Low brake fluid level
Malfunctions can occur in the brake system if the brake fluid level is too low.
The brake fluid level is monitored electronically.
WARNING
When applying the brakes to clean off deposits on the pads and discs,
select a clear, dry road. Be sure not to inconvenience or endanger other
road users. Risk of accident.
Caution
•Never let the brakes “drag” by leaving your foot on the pedal when it is
not necessary to brake. This overheats the brakes, resulting in longer stop-
ping distances and greater wear.•Before driving down a long, steep gradient, it is advisable to reduce speed
and change to a lower gear (or move the gear lever to a lower gear position if
your vehicle has automatic transmission). This makes use of engine braking and prolongs the service life of the brakes. If you still have to use the brakes,
it is better to brake firmly at intervals than to apply the brakes continuously.
Note
If you wish to equip the vehicle with accessories such as a front spoiler or
wheel covers, it is important that the flow of air to the front wheels is not
obstructed, otherwise the brakes can overheat.Brake servo
The brake servo assists the driver when brakingThe brake servo increases the pressure you apply to the brake pedal. The
brake servo works only when the engine is running.
WARNING
Ensure the vehicle does not move while in neutral, when the engine is
stopped. Failure to do so could result in an accident.
Note
If the brake servo is not working, e.g. because the vehicle has to be towed or
because it is broken, you will have to press the brake pedal considerably
harder to make up for the lack of servo assistance.
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Intelligent technology
196Power steeringPower steering makes it easier to turn the steering wheel
when the engine is running.Power steering assists the driver by reducing the force needed to turn the
steering wheel.
Power steering does not work if the engine is off. In this case the steering
wheel requires much more force to turn.
If the steering is held at its turning limit when the vehicle is stationary, this
will place an excessive load on the power steering system. Turning the
steering wheel to its limit places a load on the system, which causes noise. It
will also reduce the idling speed of the engine.
Caution
When the engine is running, do not turn the steering wheel to its limit for
more than 15 seconds. Otherwise, there is a risk of damaging the power
steering.
Note
•If the power steering should fail at any time or the engine is switched off
(for instance when being towed), the vehicle can still be steered. However,
more effort will be required to turn the steering wheel.•If the system is leaking or malfunctioning, please take the vehicle to a
qualified workshop as soon as possible.•The power steering system requires a special hydraulic fluid. The fluid
reservoir is located at the front of the engine compartment on the left
⇒ page 301. The correct fluid level in the reservoir is important for the power
steering to function properly. The hydraulic fluid level is checked at the
Inspection Service.
Servotronic*The servotronic system electronically adjusts the power
assisted steering.In vehicles equipped with servotronic power steering the degree of power
assistance ⇒page 196 is adjusted electronically according to road speed.
If a fault should occur in the servotronic system, the power steering will still
operate. The degree of power assistance will, however, no longer adapt to
different speeds. If the electronic regulating system is not working properly,
this is most noticeable when turning the steering wheel at low speeds (for
instance when parking), as more effort will be required than usual. The fault
should be corrected by a qualified workshop as soon as possible.
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