Page 185 of 319

Driving183
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. 146 .
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. 147, 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. 146 Centre console:
Manual gear selection
(tiptronic mode)Fig. 147 Display: Manual
gear selection (tiptronic
mode)
A+
A-
exeo_EN.book Seite 183 Montag, 30. August 2010 4:45 16
Page 186 of 319

Driving
184Back-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. 148 Steering wheel:
tiptronic controls
A–A+
exeo_EN.book Seite 184 Montag, 30. August 2010 4:45 16
Page 187 of 319

Intelligent technology185
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 186. 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. 149 Centre console
with ESP switch
exeo_EN.book Seite 185 Montag, 30. August 2010 4:45 16
Page 188 of 319

Intelligent technology
186If required, the ESP can also be enabled and disabled manually by briefly
pressing the button ⇒ page 185, fig. 149. The ESP warning lamp lights
up when the system is switched off, see ⇒page 68.
In general, the ESP should be left switched on at all times. In particular
circumstances where a certain amount of wheel slip is desirable, it may be
advisable to switch off the ESP. Examples:•when driving with snow chains•when driving in deep snow or on loose surfaces•when rocking the vehicle backwards and forwards to free it.
The ESP should be switched on again afterwards as soon as possible.WARNING
The ESP is not able to overcome the physical limits of adhesion. Even with
ESP, you should always adjust your speed to suit the conditions. Please
b ea r t h is i n m i n d , e s p e ciall y o n w e t o r s l i pp e r y roa d s u r fa ces . D o n o t l e t t h e
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 stop-
ping 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 control
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 subjec t to the physical limits of adhesion.
Always bear this in mind, especially on wet or slippery roads. If you notice
that the ABS is working (to counteract locked wheels under braking), 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 67.
ESP
exeo_EN.book Seite 186 Montag, 30. August 2010 4:45 16
Page 189 of 319

Intelligent technology187
Safety First
Operating Instructions
Practical Tips
Technical Specifications
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 achieve
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) inter-
venes 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 ESP.
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, accel-
erate and climb a gradient in slippery conditions where this may otherwise 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 186. 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 vehicle
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 vehicle 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 carefully.
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.
exeo_EN.book Seite 187 Montag, 30. August 2010 4:45 16
Page 190 of 319

Intelligent technology
188
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 186, 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 244.
exeo_EN.book Seite 188 Montag, 30. August 2010 4:45 16
Page 191 of 319

Intelligent technology189
Safety First
Operating Instructions
Practical Tips
Technical Specifications
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
The rate of wear on the 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. 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
exeo_EN.book Seite 189 Montag, 30. August 2010 4:45 16
Page 192 of 319

Intelligent technology
190and 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.
Power 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 295. 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.
exeo_EN.book Seite 190 Montag, 30. August 2010 4:45 16