tow AUDI A4 2008 B8 / 4.G Owner's Manual

Driving127
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data be deactivated temporarily. The green symbol in the display will
change to white but the stored speed will be retained.
Applies to vehicles: with cruise control systemPre-selecting a speed
You can pre-select a desired speed while the vehicle is
stationary.– Switch on the ignition.
– Pull the lever to position 1 ⇒page 125, fig. 134.
– Push the lever up towards or down towards in
order to increase or reduce the cruising speed setting.
– Release the lever to store the cruising speed setting
displayed.This function allows you to enter the desired cruise control setting
speed ahead of time, for example before joining a motorway. Once
you are on the motorway, you can activate the cruise control system
by pulling the lever to position .Applies to vehicles: with cruise control systemSwitching off the cruise control systemSwitching off temporarily
– Press the brake pedal, or
– Manual gearbox: Press the clutch pedal for a relatively
long period, or
– Push lever to position (click stop not engaged)
⇒page 125, fig. 134, or– Drive more than 10 km/h faster than the stored speed
over a period of more than 5 minutes.
Switching off completely
– Press the lever to position (click stop engaged), or
– Switch off the ignition.
The speed setting will remain stored after the system is temporarily
deactivated. To resume the programmed cruising speed, release the
clutch or brake pedal and pull the lever to position .
The stored speed will be deleted once the ignition is switched off.
WARNING
Do not resume the programmed cruising speed if this is too high
for the traffic conditions - this can cause accidents.
AA
A+
A-
A1
AA
A2
AA
A2
A1
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adaptive cruise control (ACC)129
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
•
Adaptive cruise control will not react when approaching a
stationary obstacle, e.g. the end of a traffic jam or a broken-down
vehicle, or if a vehicle should come towards you in the same lane.
•
Please make sure you do not unintentionally rest your foot on
the accelerator - this will override the adaptive cruise control
system which, as a result, will not automatically brake the vehicle.Note
•
For safety reasons, the speed setting will be deleted when the
ignition is switched off.
•
Switching on the adaptive cruise control automatically activates
the Electronic Stabilisation Program (ESP) and the traction control
system (ASR). These two systems cannot be deactivated while the
adaptive cruise control is switched on.
•
Damage caused by impacts (e.g. if the vehicle is damaged when
parking) can affect the radar sensor settings. This can cause the
system to malfunction or switch off completely.
•
The radar sensor is heated. However, in winter conditions, you
should make sure that the radar sensor is free of ice and snow
before you set off. If necessary, carefully clean the cover of the radar
sensor and the surrounding area ⇒page 128, fig. 136.
•
To make sure that the radar sensor is fully operative, do not
attach any objects (e.g. stickers, add-on parts or other accessories)
to the area surrounding the radar sensor. Do not paint the area
surrounding the radar sensor.
Applies to vehicles: with adaptive cruise control and manual gearboxVehicles with manual gearbox
The driver of a vehicle with a manual gearbox of course
has to change gears as appropriate, even when the adap-
tive cruise control is activated.The adaptive cruise control is available from the second to the sixth
gear (when driven in normal engine speed range).
When the adaptive cruise control is activated, the driver must press
the clutch pedal as normal in order to change gear. When changing
gear or pressing the clutch pedal (for up to 20 seconds), the adap-
tive cruise control will remain activated.
When changing gear, the driver does not have to accelerate after
engaging a gear as the engine torque will be coordinated by the
adaptive cruise control.
The following situations may lead to an automatic deactivation of
the adaptive cruise control:•
pressing the clutch pedal too long (longer than approx.
20 seconds)
•
incorrect changing of gears and/or use of the clutch pedalNote
•
The adaptive cruise control cannot be activated while changing
gears.
WARNING (continued)
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adaptive cruise control (ACC) 132
Setting a higher speed
–Briefly move the control lever up towards ⇒fig. 140.
The speed will be incremented by one graduation on the
scale in the speedometer.
– Press the control lever up towards and hold it in this
position. The speed setting is indicated by the diodes in
the speedometer; the speed will be increased accord-
ingly.
Setting a lower speed
–Briefly move the control lever down towards . The
speed will be reduced by one graduation on the scale in
the speedometer.
– Press the control lever down towards and hold it in
this position. The speed setting is indicated by the
diodes in the speedometer; the speed will be reduced
accordingly.After releasing the control lever, the system will adapt your speed to
the setting you have selected.
Following any changes, the new stored speed will be displayed
briefly in the system status indicator ⇒page 136.
Note
You can still use the accelerator pedal at any time to increase speed
in the normal way. The previously programmed speed will be
resumed when the accelerator pedal is released. You can set a new
speed at any time by pressing the button ⇒page 131,
fig. 139.
Applies to vehicles: with adaptive cruise controlSwitching off the system (with speed memory function) and reactivating it
In some situations it makes sense to switch off the
system.Switching off the system (with speed memory
function)
– Press the brake pedal, or
– Press the control lever in direction ⇒fig. 141.
Reactivating the system
– Release the brake pedal and pull the lever in direction .
WARNING
It is dangerous to resume a set speed which is too high for the
current road, traffic or weather conditions - risk of accident.
Note
When switching off the system (with speed memory function) the
speed stored at this point remains in the memory.
A+
A+
A-
A-
SET
Fig. 141 Control lever
for: Switching off the
system (with speed
memory function) and
reactivating it
A2
A1
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adaptive cruise control (ACC)133
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Applies to vehicles: with adaptive cruise controlSetting the distance
The distance can be set in 4 different stages.– Briefly press the sliding switch ⇒fig. 142 once towards
or . The display in the instrument cluster will briefly
show the current distance setting.
– Press the sliding switch again towards or to
increase or reduce the distance by one level at a time.Choosing the distance
The adaptive cruise control system determines the distance to the
vehicle in front by time intervals. It defines a time-based distance to
the vehicle in front which is kept at a constant level. This converts
to a distance which depends on the speed - the higher the speed,
the higher the safety distance in metres ⇒.
The actual distance maintained by the adaptive cruise control can
be longer or shorter, depending on the traffic situation and the
driving style of the driver in front.
Distance 1

This setting is suitable for brisk driving in a line of traffic. The time
interval is 1 second. This is equivalent to (for instance):•
A distance of 14 metres at a speed of 50 km/h
•
A distance of 36 metres at a speed of 130 km/h
Distance 2

This setting is suitable for relaxed “moving with the flow” in a line
of traffic. The time interval is 1.3 seconds. This is equivalent to (for
instance):•
A distance of 18 metres at a speed of 50 km/h
•
A distance of 47 metres at a speed of 130 km/h
Distance 3

This (recommended) setting is suitable for relaxed “moving with the
flow” in a line of traffic. The time interval is 1.8 seconds. This is
equivalent to (for instance):•
A distance of 25 metres at a speed of 50 km/h
•
A distance of 65 metres at a speed of 130 km/h
Distance 4

This setting is suitable for single-carriageway roads. The time
interval is 2.3 seconds. This is equivalent to (for instance):•
A distance of 32 metres at a speed of 50 km/h
•
A distance of 83 metres at a speed of 130 km/h
You can control the acceleration and braking response of your
vehicle in adaptive cruise control mode by adjusting the settings on
the sound system or MMI* ⇒page 139. Depending on the driving
program and distance selected, acceleration and braking response
will range from dynamic (1) to relaxed (5).
Fig. 142 Control lever
for: Setting the
distance
A+
A-
A+
A-
Driving pro-
gram
dynamic
standard
comfort
Distance 1
1
2
3
Distance 2
2
3
4
Distance 3
2
3
4
Distance 4
3
4
5
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adaptive cruise control (ACC) 136•
Vehicle in front: If a vehicle is detected in front, the arrows will be
on the scale. The green area of the scale represents the distance
setting. If you approach the vehicle in front slowly, the arrows will
move from the grey area into the green area of the scale.
•
Driver intervention prompt: If you approach the vehicle in front
quickly, the arrows act as a warning. When the actual distance is
shorter (or is likely to become shorter) than the distance selected,
the arrows move into the red area of the scale. In certain situations,
you may need to intervene as the driver ⇒page 138, “Driver inter-
vention prompt”.
Status
•
ACC OFF (in white letters): The adaptive cruise control is
switched off.
•
ACC AVAILABLE (in white letters): The system is switched on but
the control has not yet been activated.
•
OVERRIDE (in white letters): You have exceeded the target speed
by accelerating.
•
DISTANCE! (in red letters): The distance to the vehicle in front is
not sufficient and you have to brake the vehicle with the foot brake.
•
DISTANCE 1 to DISTANCE 4 (in green letters): Shows the time
interval you have selected. The adaptive cruise control is in cruise
mode.
•
DISTANCE 1 - dyn., DISTANCE 1 - comf. etc. (in green letters): If
the settings are adjusted on the sound system or MMI* such that
the “standard” driving program is replaced by “comfort” or
“dynamic”, the message above will indicate the setting.
Applies to vehicles: with adaptive cruise controlSystem status indicator in the instrument cluster display
The text messages and symbols in this section of the
display are not shown permanently.Time intervals (e.g.

)
The various symbols for the time intervals -arrow- ⇒fig. 146 appear
when you change the settings.
The symbol
 indicates that the warning tone has been switched
off.
...
The text message ... (three white dots) appears if a setting made
with the control lever cannot be implemented. There can be several
reasons for this:
•
You have pulled the control lever towards you to resume the
programmed cruising speed, without a target speed having been
set.
•
The control lever has been pushed up / down to increase / reduce
the speed, without a target speed having been set.
AC
Fig. 146 Instrument
cluster: Further infor-
mation
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adaptive cruise control (ACC)139
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
•
An acoustic warning will also sound (unless it has been deacti-
vated in the sound system or MMI* settings).Note
•
Pressing the brake pedal will switch off the adaptive cruise
control system. The speed set at that point will, however, remain
stored until the adaptive cruise control is activated again.
•
To resume the programmed cruising speed, release the brake
pedal and pull the control lever towards you ⇒page 132,
“Switching off the system (with speed memory function) and reacti-
vating it”.
•
If you exceed the target speed by pressing the accelerator, the
driver intervention prompt will not be accompanied by a warning
tone. The indicator lamp shown in the display will also switch off
when the target speed is exceeded.
•
If the adaptive cruise control triggers a braking operation the
hydraulic brake system is under pressure. This is why brake pedal
travel will be shorter and the pedal will feel “harder”.
Applies to vehicles: with adaptive cruise controlSetting the warning tone volume and driving program
You can change the adaptive cruise control settings on
the sound system or MMI* to suit your individual driving
style.– Select: Function selector button > adaptive cruise
control.Setting the volume of the warning tone
If the adaptive cruise control system switches off (e.g. when the ESP
intervenes) or a driver intervention prompt appears, a warning tone
will sound.
You can set the volume of the warning tone to low, medium, or high.
The new volume will sound briefly after making any adjustment. If
you do not want a tone to sound, select off.
Adjusting the basic settings
You can set the distance (time interval) you want the adaptive cruise
control system to keep to the vehicle in front by selecting distance
1, distance 2, distance 3 or distance 4.
Fig. 148 Display: adap-
tive cruise control
CAR
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Audi lane assist147
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
•
Unfilled lines: The lane assist is switched on but not ready for
warning ⇒page 146, fig. 161,
Version : High-resolution display
•
Solid white lines: The lane assist is switched on and ready to
warn.
•
Solid red line (left or right): The lane assist warns you before you
cross the lane demarcation ⇒page 146, fig. 160.
•
Unfilled lines: The lane assist is switched on but not ready for
warning ⇒page 146, fig. 161.
Messages in the instrument cluster display
Should the lane assist be deactivated automatically, the indicator
lamp in the instrument cluster will go out and one of the following
messages will appear in the instrument cluster display:
Audi lane assist not available: currently no sensor vision
This message is displayed when the camera is no longer functional
after the system has continuously failed to detect the lane mark-
ings. This can have the following causes:
•
The outside of the camera window ⇒page 145, fig. 159 is dirty
or frosted. Please remove dirt or ice from this area of the wind-
screen.
•
The inside of the camera window is misted up. In this case,
please wait for the camera window to demist before switching on
the lane assist system again.
•
Due to the conditions (e.g. snow-covered road) the system has
not been able to detect the lane markings for a long period. Do not
switch the lane assist system on again before the lane markings are
discernible.
Audi lane assist currently not available
A temporary error is preventing the lane assist system from fully
functioning. Try switching on the lane assist system again later.
Audi lane assist: system faultThe system should be checked by an Audi dealership or other qual-
ified workshop.
Applies to vehicles: with lane assistSetting the warning time and steering vibration
You can change the lane assist settings on the sound
system or MMI* to suit your individual preferences.– Select: Function selector button > Audi lane assist.Setting time of warning
early: In this setting, the driver will be warned before a wheel
crosses a lane marking. The warning depends on the angle with
which the vehicle is approaching the lane marking. The larger the
angle with which you are driving towards the marking, the earlier
you will receive the warning, i.e. the distance between the vehicle
and the marking might still be still relatively long. If you are driving
toward the marking at a very narrow angle, you will receive the
warning later, i.e. shortly before one of the wheels touches the
marking.
adaptive: In this setting, the time of warning is adapted to the road
layout and the vehicle's speed. The warning will be received later
when you are driving through a bend, and earlier when you are
AA
AB
Fig. 162 Display:
Setting time of
warning and steering
vibration
CAR
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Audi side assist149
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Audi side assistLane change assist featureApplies to vehicles: with side assistDescription
The side assist function assists the driver when changing
lanes.The side assist function employs radar sensors ⇒fig. 163 to assist
the driver in monitoring following traffic and the blind spots on both
sides of the car ⇒page 151, fig. 166.Warning lamps are incorporated in the two exterior mirrors
⇒fig. 164. The warning lamp on the left-hand mirror assists the
driver when changing lane towards the left and the warning lamp
on the right-hand mirror assists the driver when changing lane
towards the right.
When one of these lamps lights up, this is to inform you that the
side assist has detected a vehicle on that side and calculates that a
lane change would be critical. This is the first stage of the warning,
referred to as the information mode ⇒page 151. This stage of the
warning is designed to be visible only when you look in the exterior
mirror.
If you operate the turn signal when the side assist has registered
what it judges to be a critical vehicle, the lamp on the exterior mirror
will then flash several times with greater intensity. This is the
warning mode ⇒page 151.
Applies to vehicles: with side assistSwitching on and off
Fig. 163 Rear bumper:
Position of radar
sensors (not externally
visible)Fig. 164 Warning lamp
on exterior mirror
(driver's side)
Fig. 165 Driver's door:
Button for side assist
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Audi side assist 150
Switching on
– Press the button ⇒page 149, fig. 165. The red indicator
lamp in the button will light up.
Switching off
– Press the button again. The indicator lamp in the button
will go out.The system is designed to provide assistance on motorways and
other out-of-town roads, so it only operates at speeds above about
60 km/h.
WARNING
•
Please note that the sensors are not always able to detect all
vehicles which may represent a potential hazard (accident risk).
•
Please note that the side assist is not able to give adequate
warning of vehicles approaching very fast from behind, or vehicles
that you are overtaking rapidly.
•
The radar sensor's "field of vision" can be impaired by rain,
snow or a lot of water on the road. This results in vehicles not
being reliably recognised or, in some circumstances, not being
detected at all by the side assist. Always give your full attention to
the position of your vehicle on the road and other nearby traffic.
•
The side assist only gives a warning of approaching vehicles
and vehicles in the blind spots when road speed is above 60 km/h.
•
Please note that the side assist does not operate in tight bends
(with a radius of less than 200 metres).
•
The side assist feature is not a substitute for the full concentra-
tion of the driver. The driver is always responsible for the safety of
lane changes and other manoeuvres. Always give your full atten-
tion to the position of your vehicle on the road and other nearby
traffic.
Caution
•
To avoid impairing the function of the side assist, do not attach
any objects (e.g. stickers or bicycle carriers) in such a way that they
might interfere with the radar sensors in the rear bumper.
•
Make sure that the warning lamps on the exterior mirrors are not
obscured by stickers or other objects.Note
•
To ensure that the side assist function works properly, do not
allow snow and ice to accumulate on the rear bumper near the radar
sensors. Please observe the additional notes on ⇒page 157.
•
The side assist function will be switched off automatically when
the electrical connector for the trailer socket is plugged in on vehi-
cles with a factory-fitted towing bracket.
•
The side assist should be switched off manually when towing a
trailer if the vehicle is equipped with a towing bracket which was not
factory-fitted.
•
The side assist system will switch off automatically if it detects
an obstruction that impairs the function of the radar sensors.
•
The warning lamps on the exterior mirrors may not be properly
visible if tinted foil is affixed to the side windows on the driver's or
passenger's side.
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Audi side assist157
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data Audi side assist: system fault
The system should be checked by an Audi dealership or other qual-
ified workshop.
Audi side assist not available when towing
On vehicles with a factory-fitted towing bracket the side assist func-
tion will be switched off automatically when the electrical connector
for the trailer is plugged in, and this message will appear in the
instrument cluster display. The side assist function may not be
switched off automatically if the towing bracket is not of the factory-
fitted type.
Applies to vehicles: with side assistSafety notesThe function of the side assist can be restricted when driving in
tight bends or over crests and in bad weather conditions.
It is possible that the radar sensors may register objects such as
high or offset roadside barriers as well as other vehicles.
The side assist system is programmed for lanes of a fixed width, and
is not able to measure differing lane widths. It monitors a zone
equivalent to one normal lane width on either side. If the lanes are
narrower than this, or if vehicles are not travelling in the centre of
the lanes, the system may give a warning for vehicles which it
judges to be critical, even though they are not in fact travelling in an
adjacent lane.
WARNING
•
Please note that the sensors are not always able to detect all
vehicles which may represent a potential hazard (accident risk).
•
Please note that the side assist is not able to give adequate
warning of vehicles approaching very fast from behind, or vehicles
that you are overtaking rapidly.
•
The radar sensor's "field of vision" can be impaired by rain,
snow or a lot of water on the road. This results in vehicles not
being reliably recognised or, in some circumstances, not being
detected at all by the side assist. Always give your full attention to
the position of your vehicle on the road and other nearby traffic.
•
The side assist only gives a warning of approaching vehicles
and vehicles in the blind spots when road speed is above 60 km/h.
•
Please note that the side assist does not operate in tight bends
(with a radius of less than 200 metres).
•
The side assist feature is not a substitute for the full concentra-
tion of the driver. The driver is always responsible for the safety of
lane changes and other manoeuvres. Always give your full atten-
tion to the position of your vehicle on the road and other nearby
traffic.Caution
To avoid impairing the function of the side assist, do not attach any
objects (e.g. stickers or bicycle carriers) in such a way that they
might interfere with the radar sensors in the rear bumper.
Note
For reasons of safety, the side assist system must be checked by a
qualified workshop if the positions of the radar sensors have been
affected by a rear-end collision, etc.Applies to vehicles: with side assistConformity certificationThe side assist employs radar sensors operating in one of two
frequency bands at 24 GHz. Please note that in some countries only
one of these two frequency bands is permitted. Accordingly, the
frequency band permitted in the country where the vehicle is being
WARNING (continued)
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