brake sensor MERCEDES-BENZ CLK320 COUPE 2003 C209 Owner's Manual

196 Controls in detailDriving systemsDistronic*
When activated, the Distronic adaptive
cruise control system increases the driving
convenience afforded by the cruise control
during travel on expressways and other
major roads.

If the Distronic distance sensor detects
a slower moving vehicle directly ahead,
your vehicle speed will be reduced so
that you follow that vehicle at a preset
distance.


If there is no vehicle directly ahead of
you, Distronic will function in the same
way as cruise control (
page 193).
Warning!
G
Distronic adaptive cruise control is no sub-
stitute for active driving involvement. It does
not react to stationary objects, nor recog-
nize or predict the curvature and lane layout
or the movement of vehicles ahead. Distron-
ic can only apply a maximum of 20% of the
vehicle’s braking power.
It is the driver’s responsibility at all times to
be attentive to traffic and road conditions
and to provide the steering, braking and oth-
er driving inputs necessary to retain control
of the vehicle.Warning!
G
Distronic is a convenience system. Its speed
adjustment reduction capability is intended
to make cruise control more effective and
usable when traffic speeds vary. However, it
is not intended to, nor does it, replace the
need for extreme care. The responsibility for
the vehicle speed and the distance to the ve-
hicle ahead, including most importantly
brake operation to assure safe stopping dis-
tance, always rests with the driver.
Distronic cannot take street and traffic con-
ditions into account.
Warning!
G
Distronic requires familiarity with its opera-
tional characteristics. We strongly recom-
mend that you review the following
information carefully before operating the
system.iFor operation in the USA only: This de-
vice complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:

This device may not cause harmful
interference, and


this device must accept any inter-
ference received, including interfer-
ence that may cause undesired
operation.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.

206 Controls in detailDriving systemsThe most likely cause for a malfunctioning
system is a dirty sensor (located behind
the hood grill), especially at times of snow
and ice or heavy rain. In such a case, Dis-
tronic will switch off, and the message Distronic Unavailable!
see oper. manual
appears in the multi-
function display.
For cleaning and care of the Distronic sen-
sor, see “Cleaning the Distronic* system
sensor cover” (
page 271).Turns and bends
In turns or bends, Distronic may not detect
a moving vehicle in front, or it may detect
one too soon. This may cause your vehicle
to brake late or unexpectedly.
iIf the message
Distronic Unavail-
able! see oper. manual
disappears
during driving and the last speed stored
flashes for approximately five seconds,
the dirt (e.g. slush) has dissolved;
Distronic works again.

208 Controls in detailDriving systemsPARKTRONIC system*
The Parktronic system is an electronic aid
designed to assist the driver during park-
ing maneuvers. It visually and audibly indi-
cates the relative distance between the
vehicle and an obstacle.
The Parktronic system is automatically ac-
tivated when you switch on the ignition
and release the parking brake. The Park-
tronic system deactivates at speeds over
11 mph (18 km/h). At lower speeds the
Parktronic system turns on again.The Parktronic system monitors the sur-
roundings of your vehicle with six sensors
in the front bumper and four sensors in the
rear bumper.
1Sensors in the front bumperWarning!
G
Parktronic is a supplemental system. It is
not intended to, nor does it replace, the
need for extreme care. The responsibility
during parking and other critical maneuvers
always rests with the driver.
Special attention must be paid to objects
with smooth surfaces or low silhouettes
(e.g. trailer couplings, painted posts or
street curbs). Such objects may not be de-
tected by the system and can damage the
vehicle.
The operational function of the Parktronic
can be affected by dirty sensors, especially
at times of snow and ice, see “Cleaning the
Parktronic* system sensors” (
page 272).
Interference caused by other ultrasonic sig-
nals (e.g. working jackhammers or the air
brakes of trucks) can cause the system to
send erratic indications, and should be tak-
en into consideration.
Warning!
G
Make sure that no persons or animals are in
the area in which you are maneuvering. You
could otherwise injure them.

209 Controls in detail
Driving systems
Range of the sensors
To function properly, the sensors must be
free of dirt, ice, snow and slush. Clean the
sensors regularly, being careful not to
scratch or damage the sensors.Front sensors
Rear sensors
Minimum distance
If the system encounters an obstacle in
this range, all the warning lamps light up
and you hear a warning signal. If the obsta-
cle is closer than the minimum distance,
the actual distance may no longer be indi-
cated by the system.
Center
approx. 40 in (100 cm)
Corners
approx. 23 in (60 cm)
Center
approx. 48 in (120 cm)
Corners
approx. 32 in (80 cm)
!During parking maneuvers, pay special
attention to objects located above or
below the height of the sensors (e.g.
planters or trailer hitches). The Park-
tronic system will not detect such ob-
jects at close range and damage to
your vehicle or the object may result.
Ultrasonic signals from outside sourc-
es (e.g. truck air brakes or jackham-
mers) may impair the operation of the
Parktronic system.
Center
approx. 8 in (20 cm)
Corners
approx. 6 in (15 cm)

361 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
Alignment bolt
Metal pin with thread. The centering
pin is an aid used when changing a tire
to align the wheel with the wheel hub.BabySmart
TM
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the front passenger seat. The
system will automatically deactivate
the passenger front airbag when such a
seat is properly installed (indicator
lamp
7
in the center console lights
up). See your authorized
Mercedes-Benz Center for availability.
BabySmartTM
compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger side airbag if a BabySmart
TM
compatible child seat is installed.BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.
Bi-Xenon headlamps*
Headlamps which use an electric arc as
the light source and produce a more in-
tense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.

379 Index
L
Labels, identification 342
Lamp bulbs, exterior 316
Lamps, exterior
Front 317
Light sensor 296
Messages in display 296–299
Rear 317
Lamps, indicator and warning
ABS 277
Airbag Off 61
Battery (SmartKey) 85
Brakes 279
CHECK ENGINE 280
Coolant 281, 289
DTR* 198
Engine diagnostics 280
ESP 276
Fuel reserve 280
Instrument cluster 276–281
Seat belts 280
Service indicator 266
SRS 57
Turn signals 23Language
Multifunction display 127
Setting 127
LATCH child seat mounts 71
Folding back 71
Layout of poly-V-belt drive 343
Leather upholstery
Cleaning 273
Lever
For cruise control 200
License plate lamps
Messages in display 298
Replacing bulbs 317, 322
Light alloy wheels
Cleaning 272
Technical data 345
Light sensor 296
Lighter see Cigarette lighter 224Lighting 105
Automatic headlamp mode 106
Combination switch 108
Daytime running lamp mode 106
Door entry lamps 110
Exterior lamp switch 105
Front fog lamps 107
High beam flasher 108
High beams 108
Instrument cluster illumination 111
Interior 109
Locator lighting 107
Low beam 105
Manual headlamp mode 106
Night security illumination 107
Parking lamps 105
Rear fog lamp 107
Settings (control system) 129
Limiting the gear range 143
Limp Home Mode 146
Line of fall 363

382 IndexOne-touch gearshifting 142
Canceling gear range limit 142
Downshifting 142
Upshifting 142
Opening
Ashtray 223
Cup holder 220, 221
Doors from the inside 92
Fuel filler flap 251
Fuel filler flap manually 313
Glove box 219
Hood 253
Side windows 187, 188
Sliding/pop-up roof 190, 314
Sliding/pop-up roof in an emergency
314
Sliding/pop-up roof with SmartKey
191
Trunk 87
Trunk from the inside 92
Windows 187
Windows with SmartKey 188Operating
Audio system 165
Cassette player 121
CD player 120
COMAND* see separate operating in-
structions
Garage door opener 238
Integrated remote control 238
Navigation system 121
Radio 120
Radio transmitters 248
Safety 16
Telephone 165
Telephone* 138, 182
Vehicle outside the USA and Canada
13
Operating safety 16
Audio system 165
Operator’s Manual 10
Ornamental moldings 271
Outside temperature indicator 113
Overdue service 266
Overhead control panel 27
Overspeed range 364P
Paintwork 270
Panic alarm 73
Panic button on SmartKey 73
Parcel net in front passenger footwell 222
Parking 50, 243
Parking brake 45, 50
Engaging 50
Message in display 299
Releasing 45
Parking lamps
Replacing bulbs 317, 319, 321
Switching on 105
Parking position
Exterior rear view mirrors 103, 135,
150
Parktronic* 364
Sensor 272
Parts see Spare parts service 340