parking brake AUDI A5 COUPE 2012 Owners Manual

CD
@
®
©
®
®
(j)
Door handle
Power locking sw it ch
Memory buttons (dr iver's seat)
Button for side ass ist .. ... .. .
A ' l 1 r out ets .... ..... ... .. .. .
L ight switch
Control lever for :
- T urn signal and high beam . .
® Multi-function steering wheel
with:
- Horn
- Driver's airbag ..... .. .. .. .
- Operating buttons for the au-
dio system
- Rocker switches for tiptronic
operation ........... .... .
® ISETI button ............... .
@ Instrument cluster .... ... .. .
@ Reset button for trip odometer
@ Sw itches for:
- Windshield wiper/washer .. .
- Trip computer ....... ... .. .
@ Ignition lock . .......... ... .
~ Adjustable steer ing column
@ Control lever for :
- Cruise control ............ .
- Adaptive cruise control .... .
@ Instrument lighting .... .. .. .
@ Release lever for the engine
hood
.. .. ................. .
@ Data Link Connector for On
Board Diagnostics (OBD II) . .. .
@ Switch for unlocking the trunk
lid
. . .. .. .. .. ........... .. .
@ Adjuster control for outside m ir-
r ors
@ Power window switches
@ MMI Display
@ D epending on opt io n s:
- Radio system
- CD changer
@ Emergency flasher
@ Glove compartment ( lockable) .
@ Front passenger's airbag .. .. . 43
65
116
89
49
52
166
131 11
1 0
12
55
22
92
92
99
102 5 1
237 26
44
57
46
52
77
166
In strument s and control s 9
@ Depending on options, switches
for :
- Aud i drive select ... .. ... .. . 124
- Electron ic Stabili zation Pro-
gram
- Rear w indow sun shade .....
@ Deluxe automat ic cl imate con- 204
54
t
ro l .... .. .. .. ............ .
@) Depending on options, selector
lever or shift lever for
83
- Manual transmission ...... . 126
- Automatic transmission . . . . . 126
@ Ashtray with cigarette lighter 75 , 76
@ Depend ing on options:
- MMI control console or
- Aud i drive select . . . . . . . . . . . 124
- Electron ic Stabili zation Pro-
gram bu tton . . . . . . . . . . . . . . 204
- Power switch for rear window
sun shade . . . . . . . . . . . . . . . .
54
@ I S TAR T ENG IN E ST OPI button 94
@ Electromechanical parking
brake .. . , ... , .. . , ... , . . . . . 96
(D Tips
- Some of the equipment or features
shown in the genera l ill ustration may be
standard equipment on your vehicle or
may be opt ional equ ipment depending
on your model. Always ask your author­
ized Aud i dealer if you have a quest ion
about your vehicle .
- Operat ion of the Multi Med ia Interface
(MMI) is described in a separate manual.

14 Instrum ent s and w arn ing /indic ato r light s
I
Electronic Stabilization Program
(ESP)
¢page 15
USA model s:
Safety systems
¢page 15
Canada model s:
Safety systems
¢page 15
[a
Tire pressure too low*
¢page 16
-
•
Left turn signal
¢page 16
Safety belt
¢page 16
g
Malfunction Indicator Lamp
(MIL)
¢page 16
•
High beam
¢page 16
a
Right turn signal
¢page 16
om
USA model s:
Cruise control activated
¢page 16
•
Canada models :
Cruise control activated
¢page 16
~
USA mod els: Anti-lock brake
system (ABS) defective
¢page 16
[IJ
Canada models : Anti-lock brake
system (ABS) defective
¢page 16
USA model s: Parking brake
¢page 17
Canada models : Parking brake
¢page 17
USA mod els: Brake malfunction
¢ page 18
Canada models : Brake malfunc­
tion
¢page 18
In vehicles with adaptive cru ise cont ro l* addi­
t iona l indicator lights are displayed
¢page 107.
A WARNING ~
-Failure to heed warning lights and other
important vehicle information may resu lt
in ser ious personal injury or vehicle dam­
age.
- Whenever stalled or stopped for repair, move the vehicle a safe d istance
off the
road, stop the engine, and turn on the
emergency flasher
¢ page 52.
- The engine compartment of any motor
veh icle is a potentially hazardous area.
Before you check anything in the engine
compa rtment, stop the engine and let it
coo l down. Always exe rcise ex treme cau­
tion when wo rking under the hood
¢ page 230, Engine compartment .
(D Tips
Many functions are monitored by the Auto­
Check system
¢ page 28 . Malfunctions
or faults will be i den tified either wi th a re d
symbol (priority 1 -Danger!) or with a yel ­
l ow symbo l (priority
2 - Warning).
~ Dynamic steering
Applies to vehicles: with Audi drive select
If the ,-w j indicator light illuminates when
switching on the ign it ion and goes o ut w hen
the engine starts, dynamic steering is activat­ ed .
If the ,-w j indicator light illuminates after the
engine starts, a system ma lfunction has oc­
curred. You can continue to drive carefully at a .,,.

Instruments and warning/indicator lights 17
See your authorized Audi dealer a s soon as
po ssible to restore full braking performance.
For mo re in format ion regarding the ABS
c:> page208.
The ABS warning light and the b rake warn­
ing light come on together. The ABS will not
work and you will notice a change in braking response and performance.
Malfunction in the brake system
If the b rake warn ing lig ht <=:> page 18 and
the ABS wa rn ing illumina te
together there
may be a ma lf u nction in the ABS, an d there
may a lso be a malf unct ion in the brake system
itself
c:> ,&. .
In t he event o f a malfunction in the brake
system
the warn ing/indicato r light _
(USA
models) ,11 (Canada models) in the in­
strument cluster flashes. By pressing the
! SE T!
b utton, you can bri ng up a dr iver message
which expla ins the ma lfu ncti on in more de ­
tail. Please note
c:> page 30 .
Malfunction in the electronic differential
lock (EDL)
The EDL works toget her with the ABS . The
A BS warning ligh t will come on if the re is a
malfunc tion in the EDL system
c:> page 205 .
See your au tho riz ed A ud i deale r as so on as
po ssib le.
.&_ WARNING
- If the m (U SA mode ls)/ 11] (Canada
mode ls) warn ing light does not go o ut,
o r if it comes o n while driving, the ABS
system is not working prope rly. The veh i­
cle can then be stopped only with the
standard brakes (without ABS). You will
not have the protection ABS provides .
Contact you r autho riz ed Aud i d ea le r as
soo n as poss ible.
- USA models: If the - warning ligh t
and
t h e m warning ligh t come on to­
ge ther, the rear w heels could loc k up
firs t un der har d b ra king. Rear wheel l ock­
up c an c ause loss o f vehicle con trol an d
an acc iden t. H ave your ve hicle re paired
-
immed iate ly by yo ur autho rize d Au di
dea le r o r a qua lified w ork shop. Drive
slowly and avo id sudden, hard brake a p­
plications.
- Canada models: If the brake warning
light . and the ABS war ning light
li]
come on togethe r, th e rear whe els could
loc k up firs t und er hard braking. Rear
wheel lock -up can caus e loss o f vehicle
con trol and an a ccide nt. Have yo ur vehi­
cle re pa ire d imme diately by your author­
i z ed A udi d ealer o r a qu alifie d wor ksh op.
D rive s low ly and avoid s udden, hard
brake applications .
:ru I<®> Electromechanical parking brake
The warning/indicator light monitors the
elec tromechanical parking brake.
Wi th t he pa rking brake applied and the igni­
tio n tu rn e d on, the. (US A
models) ,11 (C an ­
ad a models) warn ing/indi cator lig ht ill umi ­
nates . After the ignition has been t urne d off,
the wa rn ing/ indicato r light cont inues to ill u­
minate for about 30 seconds . If the parking
brake is applied w ith the ign ition t urned off,
the war ning/ indicato r light illum inates for
abo ut 30 seconds .
The wa rning/indicator light wi ll go out when
the pa rking bra ke is re leased .
If the warning/indicator light flas hes continu­
o us ly
after applying the parking bra ke, brak ­
ing fo rce is not s uff icient to prevent the vehi­
cle from rolling unintentionally . Please note
the followi ng:
- If the slo pe of the ground is too steep to
park the vehicle, the addit ional drive mes­
sage appea rs
Caution : Vehicle parked too
steep .
- In the eve nt of a pa rking bra ke malfunction,
the yellow
IIJ symbol appears in the instr u­
ment cluste r display a nd the driver message
Parking brake malfunction! is display ed .
Have t he ma lf u nct ion r epair ed as soon as
po ssible by a n authoriz ed Audi dea le r or a ny
o th er q ualifi ed w orksh op.

18 Instrum ent s and w arn ing /indic ato r light s
BRAKE/ CQ)) Brake system
The warning/indicator light flashes if brake
fluid level is low, if there is an ABS system
malfunction or a parking brake malfunction.
The 1111 (USA models)/ . (Canada models)
light illuminates when the ign ition is turned
on .
It goes out after the engine has been
started. This indicates t hat the brake war ning
light is funct ion ing properly.
If th e br ake w ar ning light d oes not light up
w hen the engin e is c ranking , th ere ma y be a
ma lfun cti on in th e ele ctric al sys tem. In thi s
case, c ontact an auth oriz ed Audi d eale r.
If the brake system warning/ind icator light
flashes, there is a brake system malfunction .
By pressing the
ISE TI button, you can br ing up
a driver message which exp la ins the ma lfunc­
tion in more detail
Q page 30.
If the ABS fails, the ABS warning/ind icator
light
B (USA mode ls)/ 11] (Canada mode ls)
flashes together w it h the brake system warn­
ing/i ndicator light
Q & .
(USA models): If the 1111 warn ing light and
the
El warning light illuminate togethe r, im­
mediately contact your author ized Audi dealer
or qualified workshop to have all bra ke pads
inspected
q page 34 .
When the light comes on, an audib le warni ng
signal is also give n.
A WARNING
- USA models: If the 1111 warning l ight
and
the m warning light come on to ­
gether, the rear wheels could lock up
first under hard braking . Rear wheel lock ­
up can cause loss of vehicle control and
an acc ident. Have your vehicle repaired
immediately by your authorized Audi
dealer or a qualified workshop . Dr ive
slowly and avoid sudden, hard brake ap·
plicat ions.
- Canada models: If the brake warn ing
light . and the ABS warning light
II]
come on together, the rear wheels could
.
lock up first under hard braking . Rear
wheel lock-up can cause loss of vehicle
control and an accident . Have your vehi­
cle repaired immed iately by your author·
ized Audi dealer or a qualified workshop .
Drive s low ly and avoid sudden, hard
brake applications.
- If the brake warning/ind icator light does
not go ou t after a few seconds and the
pa rking brake released, or lights up wh ile
you are driv ing, the fluid level in the
brake fluid reservoir is too low. If yo u be ­
lieve that it is safe to do so, proceed im­
mediately at low speed to the nearest
author ized Audi dealer or qualif ied repair
facility and have the brake system in·
spected.
- Always keep in mind that after severa l
brake applications, you will need greater
pressure on the brake pedal to stop your
veh icle. Do not rely on strained brakes to
respond with max imum stopping power
in critical s ituations. You must allow fo r
increased braking dis tances. The extra
distance used up by fading brakes could
lead to an accident.

30 Driver in formation d isplay
Canada m odel s:
Bra ke system malfunction
c:>page30
Engine coolant level too low/en­
gine coolant temperature too
high
c:>page 31
Engine oi l pressure too low
c:>page 31
Refill engine oil now
c:>page32
Steering malfunction
c:>page 32
Ignition lock malfunction
c:>page32
0 Alternator malfunction
If the . symbol in the instrument panel dis­
p lay flashes, the n there is a malfunc tion in the
a lt ernator or the vehicle electron ics. A warn­
ing to the driver will appear, too. The driver
warning goes out after about 5 seconds, but it
can be brought up at any time by pressing the
ISETI button again.
Usually, you can still drive to the next dea ler­
ship. T urn off all b ut the most necessary elec­
tr ica l cons umers, since these dra in the veh i­
cle's battery.
(J;) Note
If the . war ning symbol (coolant system
malfunction) also lights up on the instru­
ment panel during the trip
c:> page 31,
then you have to stop immediately and
turn off the eng ine. The coolant pump is
not working anymore--danger of damage
to the eng ine!
BRAKE/ Brake system malfunction
A malfunction in the brake system must be
repaired as soon as possible .
If the warn ing /indicator light-(USA
models)/ . (Canada models) in the instru- me
nt cluster flashes, there is a brake system
malfunction. A driver message appears as
we ll to exp la in the ma lfunction in more de ­
ta il. The dr iver warning goes out after about S
seconds, but it can be brought up at any time by press ing the
ISE TI button again .
Stop the Vehicle and Check the Brake
Fluid
.,. Stop the vehicle .
.,. Check t he brake fluid level
c:> page 246 .
.,. Seek professional assistance if necessary .
Warning ! Fault in br ake system . Contact
workshop
.,. Drive ca refully to the nearest authorized
Aud i dea le r or other q ualified workshop and
have the malfu nction corrected
c:> &_ .
Parking b ra ke Plea se get to a repair shop
.,. If this symbol appears when the vehicle is
stat ionary or after the ignition is t urned on,
check to see if the par king brake can be re­
leased. Dr ive to a n author ized Audi dealer or
other qualified workshop as soon as possi­
b le and have the malfunc tion cor re ct ed. If
t he par king b rake cannot be opened, t hen
take it to an expe rt at an authorized A udi
dea ler .
.,. If the symbo l appea rs whi le yo u are d riving,
it is possible that the traction contro l or the
emergency brake has malfunctioned. It is
possible that the parking brake cannot be
app lied. It is also possible that the parking
brake cannot be released after it has been
app lied. Drive to an autho rized Aud i deale r
or other qualified workshop to have t he mal­
fu nction corrected.
If the ABS system malfu nctions, the ABS
warning/indicator light illuminates togethe r
with the brake system ma lfunction w arning/
i ndica to r li ght
c:> .&..
A WARNING
-A lways observe t he warn ings in
c:> page 230, Engine compartment, be­
fore open ing the hood and check ing the
brake fluid.

96 On the road
-If the engine has been under heavy load
for an extended period, heat builds up in
the engine compartment after the en­
gine is switched off -there is a risk of
damaging the engine. Allow the engine
to run at idle for about 2 m inutes befo re
switching it off .
@ Tips
If you open the driver's door with the igni­
tion switched on, a buzzer sounds and the
message
Ignition i s on appears in the in­
strument cluster display . Switch the igni­
tion off.
Switching engine off with the button
Applies to vehicles: w it h conve nience key
.,. Bring your vehicle to a complete stop.
.,. Automatic transmission* : Move the selector
lever to the
P or N pos ition.
> Pre ss the I STAR T ENGINE STOP I button
c::>page 94, fig. 106 .
Emerg enc y OFF function
If necessary, the engine can be switched off
with the selector lever in the
R , D or S* posi­
tions. To do so, step on the brake pedal and press and hold the
I START ENGINE S T OP I but­
ton (veh icle speed must be less than 6 mph/
10 km/h.
& WARNING
- Never turn off the eng ine unti l the vehi­
cle has come to a comple te stop.
- The brake booste r and se rvotronic only
work when t he engine
is running. With
the ignition turned off, yo u have to apply
more force when steering or braki ng .
Since you cannot steer and stop norma l­
ly, this can lead to accidents and serious
injuries.
- For safety reasons, you should always
park your vehicle with the se lector lever
in P. Otherwise, the veh icle could inad­
vertently roll away. -
After the engine has been switched off,
the radiator fan can cont inue to run for
up to 10 minutes -even with the ignition
switched off. It can also sw itch on again
after some t ime if the coolant tempera­
ture rises as the result of a heat bu ildup
or if the engine is hot and the engine
compartment is additionally heated by
the s un's rays .
Q;) Note
If the engine has been under heavy load
fo r an extended period, heat bu ilds up in
the engine compartment after the engine i s switched off -there is a r isk of damag ing
the engine. Allow the engine to run at id le
for abo ut 2 minutes before switching it
off .
Electromechanical
parking brake
Operation
The ele ctromechanical parking brake replaces
the hand brake.
Fig . 107 Center console: Parking b rake
> Pull on the switch @ c::> fig. 107 to apply the
parking brake. The indicator light in the
sw itch illuminates .
.,. Step on the brake pedal or the accelerator
pedal and press the switch at the same t ime
to re lease the park ing brake. The indicator
light in the sw itch goes out .
Your vehicle is equipped with an electrome­ chanical parking brake . The parking brake is
designed to p revent the veh icle from rolling
u nintentionally and replaces the hand b rake. .,..

In addition to the norma l functions of a tradi­
tional hand brake, the electromechanica l
parking brake provides various convenience
and safety functions.
When start ing f rom re st
- T he integ ral starting assist helps you when
driving by automatically releasing the park ­
ing brake ¢
page 98, Starting from rest.
-When starting on inclines, the starting as­
sist prevents the vehicle from unintentional­
l y rolling back. The braking force of the
parking brake is not released until sufficient
driv ing force has been built up at the
wheels .
Emergenc y bra ke function
An emergency brake ensures that the vehicle
can be slowed down even if the
normal brakes
fa il¢
page 98, Emergency braking .
Indicator light s
-If the parking brake is closed w ith the igni­
tion
s witch ed on the . (USA models) /
• (Canada models) indicator lights come
on in the instrument cluster and the switch.
-If the parking brake is closed with the igni­
tion
s witched off the . (USA models) I
• (Canada models) indicator lights come
on in the instrument cluster and the switch
for about 20 seconds.
A WARNING
If a gear or a drive range (automat ic trans­
m ission) is engaged with the vehicle sta­
tionary and the engine run ning, you must
in no inst ance accelerate o r release the
cl utch carelessly. Otherwise the veh icle
wi ll start to move immediately -risk of an
accident.
CJ) Note
If the . symbol in the disp lay o r the
- (USA
models) ;II (Canada mode ls)
ind icator light in the instr ument cluster
flashes, there is a ma lfunction in the brake
system. By pressing the
! SETI button, you
can br ing up a driver message which ex-
On th e ro ad 97
plains the ma lf u nction in more detail. If
the driver message
P ark ing brake! ap­
pears, the re is an operating malfunct ion in
the parking brake which you should have
repaired immed iate ly by an authorized Au­
di dealer or other qualified workshop
¢page 30.
(D Tips
-You can apply the parking brake at any
time -even with the ign ition turned off.
The ignit ion must be turned on in order
to release the par king b rake .
- Occasional noises when the parking
brake is applied and released are normal
and are not a cause fo r conce rn.
- When the vehicle is parked, the park ing
brake goes throug h a self-test cycle at
regu lar inte rva ls. Any associated noises
are normal.
Parking
Various rules apply to prevent the parked ve­
hicle from rolling away accidentally.
Parking
"' Stop the vehicle with t he foot brake .
"' Pull the switch to apply the parking brake.
"' Automatic transmission*: Move the selector
lever to
P .
"' Tur n the engine off¢_&.
"' Ma nual transmiss ion: Shift into 1s t gear.
In addition on inclines and grades
"' Turn the steering wheel so that your vehicle
w ill roll aga inst the curb in case it shou ld
start to move.
A WARNING
- When you leave you r vehicle -even i f on­
ly briefly -always remove t he ignition
key. This app lies pa rticularly when chil­
dren remain in the vehicle. Otherwise t he
children could start the eng ine, release
the park ing brake or operate electrical
equ ipme nt (e.g. power windows). There
is the risk of an acc ident.

98 On the road
-When the vehicle is locked, no one - par­
t icu larly not ch ildren should remain in
the vehicle. Locked doors make it more
difficult for emergency workers to get in­
to the vehicle - putt ing lives at risk.
Starting from rest
The starting assist function ensures that the
parking brake is released automatically upon
starting .
Stopping and applying parking brake
.. Pu ll the switch to apply the parking brake.
Starting and automatically releasing the
parking brake
.. When you start to drive as usua l, the park­
ing brake is automatically re leased and your
vehicle begins to move.
When stopping at a traffic signal or stopping
in city traffic on vehicles with an automatic
transmission, the park ing brake can be ap­
plied. The veh icle does not have to be held
with the footbrake. The park ing brake elimi­
nates the tendency to creep with a drive range
engaged. As soon as you dr ive off as usual,
the park ing brake is released automatically
and the veh icle sta rts to move.
Starting on slopes
When starting on inclines, the start ing ass ist
prevents the vehicle from unintentionally roll­
i ng back . The braking force of the parking
brake is not released until sufficient dr iving
fo rce has been built up at the whee ls.
(D Tips
For safety reasons, the park ing brake is re­
leased automatically only when the dr iv­
er 's safety belt is engaged in the buck le.
Starting off with a trailer
To prevent rolling back unintentionally on an
incline, do the following:
• Keep the switch pulled and depress the ac­
celerator . The parking brake stays applied
and prevents the vehicle from roll ing back ­
ward .
• You can re lease the switch once you a re sure
that you are developing enough driving
force at the wheels by depressing the accel­
erator.
Depending on the weight of the rig (vehicle
and t railer) and the severity of the incline, yo u
may roll backwa rds as you start . You can pre­
vent rolling backwards by holding the parking
brake switch pulled out and accelerating -just
as you would when starting on a hill with a
convent ional hand brake.
Emergency braking
In the event that the conventional brake sys­
tem fails or locks.
.. In an emergency, pull the switch and con­
tinue to pull it to slow your vehicle down
w ith the park ing brake.
• As soon as you release the switch or acceler-
ate, the brak ing process stops.
If you pull the switch and hold it above a
speed of about 5 mph (8 km/h), the emergen­ cy brak ing funct ion is initiated . The vehicle is
braked at all four wheels by activating the hy­
draulic brake system . The brake performance
i s sim ilar to making an emergency stop~& .
In order not to act ivate the emergency brak­
i ng by mistake, an audib le warning tone (buz­
zer) sounds when the switch is pulled. As soon
as the switch is re leased, or the accelerator
pedal is depressed, emergency braking stops.
A WARNING
Emergency braking should only be used in
an emergency, when the norma l foot brake
has failed or the brake pedal is obstructed. .,..

Using the parking brake to perform emer­
gency braking will slow your vehicle down
as if you had made a full brake application.
The laws of physics cannot be suspended
even w ith ESP and its associated compo­
nents (ABS, ASR, EDS). In corne rs and
when road or weather conditions a re bad,
a full brak e application can cause the vehi­
cle to skid or the rear end to break away -
r isking an accident.
Driver messages in the instrument
cluster
Caution: Vehicle parked too steep
This message appears when the park ing brake
is applied on an incline that exceeds about
30%.
In this case the braking power of the parking
brake may
not be adequate to prevent the ve­
hicle from rolling unintentionally .
Press brake pedal to release parking brake
This driver message appears when the switch
to release the parking brake was pressed. The
parking brake can only be released if you step
on the brake pedal and at the same time press
the switch or you automatically release the
parking brake with the start ing ass ist
<=> page 98.
(p] Parking brake m alfunction!
This driver message appears together with
the yellow
IIJ symbo l when there is a parking
brake malfunction.
On the road 99
Cruise control
Switching on
The cruise control system makes it possible to
drive at a constant speed starting at 20 mph (30 km/h) .
Fig. 108 Contro l l ever w ith push-b utton
Fig. 109 D isp lay : Selected speed
.. Pull the lever to position @<=> fig. 108 to
sw itch the system on.
.. Drive at the speed to be controlled.
.. Press button @to set that speed.
a,
~ 0 er a, a,
The stored speed and the green symbol
[ijj(Q~i~ (US model) /. (Canadian model) are
shown in the display<=> fig. 109. The display
may vary, depending on the type of display in
your vehicle. The ind icator light
mJJlm (US model)/ . (Canad ian model) will
also light up in the instrument cluster .
The speed is kept constant by modifying en­
gine power or through an active brake inter­
vention.
A WARNING
- Always pay attention to the traffic
around you when the cruise control is in
operation. You are always responsible for ..,.

react when you drive towards an obstacle
or something else on or near the road
t h at is not moving, such as vehicles stop­
ped in a traffic jam, a stalled or disabled
vehicle .
- Always remember that the adaptive
cruise control cannot detect a vehicle
that is driving towards you in your traffic lane and that it cannot detect narrow ve­
hicles such as motorcycles and bicycles.
(D Tips
- Fo r safety reasons, the stored speed is
deleted when the ignition is turned off .
- The Electronic Stabilization Program
(ESP) and the Anti-Slip Regulation (ASR)
cannot be deactivated when the adaptive
cruise control is switched on. If the ESP
and the Anti-Slip Regulation (ASR) has been deactivated and you then switch on
the adaptive cruise control, the ESP func­
tion will also be activated automatically.
- Damage caused by accidents (e.g. if the
vehicle is damaged when parking) can af­
fect the radar sensor settings. This can
cause the system to malfunction or
switch off complete ly.
- The radar sensor cover is heated. In win­
ter cond itions, you should still check be­
fore driving to make sure it is free of ice
and snow. If necessary, clean the area
near the radar sensor carefully
9 fig. 110.
-To ensure that the radar sensor is not
blocked, foreign objects (e.g . stickers,
add-on parts) must not cover the area near the radar sensor
9 fig. 110. The
area near the radar sensor must not be painted, either.
- For Declaration of Compliance to United
States FCC and Industry Canada regula­
tions
~ page 296.
Adaptive cruise control 103
How does adaptive cruise control work?
App lies to veh icles: w ith adaptive cru ise control
Vehicles traveling ahead are detected with
the aid of a radar sensor.
Fig. 111 Radar sensor measu re m ent range
A radar sensor is built into the front of the ve­
hicle
9 fig. 111, which is subject to certain
system limits~
page 112. Stationary objects
are not taken into consideration. The system
is intended to measure the distance to reflec­
tive surfaces. The system responds after the
distance measurement has taken place. If a
measurement is not possible, the system does
not respond .
Open road
When the road is clear, the adaptive cruise
control works like cruise control. It maintains
a constant target speed specified by the driv­
er.
Driving in traffic
If a vehicle driving ahead is detected, the
adaptive c ruise control decelerates (within the
Limits of the system)
9 page 111, Driver in­
tervention prompt
and 9 page 112, System
limitations
to its speed and after adjusting,
tries to maintain the set distance from the ve­
hicle ahead . Th e vehicle may temporarily drive
slower than the set speed while adjusting
~.&. in Description on page 102.
If the vehicle in front accelerates, adaptive
cruise control also accelerates up to the speed
that you have set.
Situation requiring driver intervention
In some situat ions you will have to use the
footbrake to slow the vehicle down in order to .,..