2005 MERCEDES-BENZ CLK500 COUPE brake sensor

260 Controls in detailDriving systemsParktronic system (Parking assist)*
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 placed the gear selector lever in
positionD,R,orN.
The Parktronic system deactivates at
speeds over approximately 11 mph
(18 km/h). At lower speeds the Parktronic
system turns on again.
The Parktronic system also deactivates
when you place the gear selector lever in
positionP.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 bumper
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, see
“Cleaning the Parktronic system* sensors”
(
page 350).
Warning!
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 road
curbs). Such objects may not be detected by
the system and can damage the vehicle.
The operational function of the Parktronic
system can be affected by dirty sensors, es-
pecially at times of snow and ice, see
“Cleaning the Parktronic system* sensors”
(page 350).
Interference caused by other ultrasonic sig-
nals (e.g. working jackhammers, car wash,
or the air brakes of trucks) can cause the
system to send erratic indications, and
should be taken into consideration.
Warning!
G
Make sure no persons or animals are in the
area in which you are maneuvering. You
could otherwise injure them.

261 Controls in detail
Driving systems
Front sensors
Rear sensorsMinimum distance
If the system detects an obstacle in this
range, all the distance warning segments
illuminate and you hear a warning signal. If
the obstacle is closer than the minimum
distance, the actual distance may no long-
er be indicated by the system.Center
approx. 40 in (100 cm)
Corners
approx. 24 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
Parktronic system will not detect such
objects at close range and damage to
your vehicle or the object may result.
Ultrasonic signals from outside sourc-
es (e.g. truck air brakes, car wash, or
jackhammers) may impair the opera-
tion of the Parktronic system.
Center
approx. 8 in (20 cm)
Corners
approx. 6 in (15 cm)

459 Technical terms
REST
(Residual engine heat utilization)
Feature that uses the engine heat
stored in the coolant to heat the vehi-
cle interior for a short time after the en-
gine has been turned off.
Restraint systems
Seat belts, child restraints, lower an-
chors and tethers for children (LATCH).
As independent systems, their protec-
tive functions complement one anoth-
er.RON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.Shift lock
When the vehicle is parked, this lock
prevents the gear selector lever from
being inadvertently moved out of
positionP without SmartKey turned
and brake pedal depressed.
Speedshift (CLK 500*, CLK 55 AMG)
Steering wheel gearshift control. You
can change the gears yourself with the
steering wheel gearshift buttons.
SRS
(S
upplemental R
estraint S
ystem)
Air bags, air bag control unit (with
crash sensor), emergency tensioning
device. Though independent systems,
they are closely interfaced to provide
effective occupant protection.

473 Index
Instrument cluster 24, 134, 457
Cleaning 351
Coolant temperature indicator 135
Illumination 134
Lamps in 354–359
Multifunction display 137
Outside temperature indicator 136
Selecting language 150
Instruments and controls see Cockpit
Interior lighting 132
Activating automatic control 132
Deactivating automatic control 132
Delayed switch-off 157
Manual operation 133
Interior rear view mirror
Adjusting 41
Auto-dimming 178
Interior storage compartments 272
Intermittent wipe 53
J
Jack 389
Jump starting 423K
Key, mechanical 397
Key, SmartKey with KEYLESS-GO*
Replacing the batteries 403
Key-dependency memory
Settings 160
KEYLESS-GO* 457
Activating ignition with 36
Closing power
tilt/sliding sunroof* with 250, 253
Closing windows with 250, 253
Factory setting 101
Global locking 101
Global unlocking 101
Important notes 100
Locking the vehicle 103
Messages in display 381
Remote controls 99
Starting the engine 47
Turning off the engine 57
Unlocking with 33
Unlocking, trunk lid 104
Kickdown 171, 457
Kilometers/miles in speedometer 149
Kilopascal 339
Km/h or mph in speedometer 149L
Labels, identification 436
Lamp bulbs, exterior 404
Lamp sensor
Messages in display 383
Lamps, exterior
Front 404
Light sensor 383
Messages in display 382–385
Rear 405
Lamps, indicator and warning
ABS 354
Battery (SmartKey) 96, 102
Brakes 355
Center console 360
CHECK ENGINE 356
Coolant 357, 375
Engine diagnostics 356
ESP 358
Front passenger front
air bag off indicator lamp 66, 360
Fuel reserve 359
Instrument cluster 354–359

476 IndexMenus 138
AUDIO 143
Control system 140, 457
NAV 144
Settings menu 146
Standard display 142
Submenus 139
TEL* 162
Trip computer 160
Vehicle status message memory 145
Messages
Displaying 145
Vehicle status message memory 145
Microphone
Hands-free microphone 29
Miles/kilometers in speedometer
Setting 149
Minispare wheel
(except CLK 55 AMG) 393
Technical data 443Mirrors
Activating exterior rear
view mirror parking position 180
Adjusting 41
Auto-dimming rear view mirrors 178
Exterior rear view mirror 41
Exterior rear
view mirror parking positions 160
Interior rear view mirror 41
Storing exterior rear
view mirror parking position 123
MON (Motor Octane Number) 306, 457
Mph or km/h in speedometer 149
Multicontour seat* 118
Multifunction display 137, 457
Displaying gear range 168
Selecting language 150
Setting date (day) 153
Setting date (month) 153
Setting date (year) 154
Standard display 141Multifunction display messages
ABS 365
BAS 366
Battery 373
Brake fluid 374
Brake pads 374
Check engine 356
Coolant 376
Coolant level 375
Cruise control 367
Display 378
Doors 378
Engine 356
Engine oil 379
ESP 367
Fog lamps, front 382
Fuel cap 356
Fuel reserve tank 381
Gear selector lever 372
High beam headlamps 383
Hood 381
Key 381
Lamp sensor 383
Lamps 383
License plate lamp 383
Low beam 383

478 IndexOpening
Ashtray (Center console) 276
Ashtray (Rear seat) 277
Cup holder 275
Doors from the inside 105
Fuel filler flap 305
Fuel filler flap manually 399
Glove box 272
Hood 308
Power tilt/sliding sunroof* 251, 401
Power tilt/sliding sunroof*
in an emergency 401
Power tilt/sliding sunroof*
with SmartKey 253
Side windows 248
Trunk 106
Trunk from the inside 107
Windows 247
Windows with SmartKey 249Operating
Audio system 207
CD player 144
COMAND* see
separate operating instructions
Navigation system 144
Radio 143
Radio transmitters 302
Telephone* 162, 207, 232
Vehicle outside the
USA and Canada 13
Operating safety
Audio system 207
Operator’s Manual 10
Ornamental moldings 349
Outside temperature indicator 136
Overdue maintenance service 345
Overhead control panel 29
Override switch
Activating 82
Deactivating 82
Overspeed range 458P
Paintwork 348
Panic alarm 83
Panic button on SmartKey 83
Parcel net in
front passenger footwell 274
Parking 55, 297
Parking assist* see Parktronic system*
Parking brake 49, 55
Engaging 55
Message in display 374
Releasing 49
Parking lamps
Replacing bulbs 404, 405, 407, 409
Switching on 124
Parking position
Exterior rear
view mirrors 123, 160, 180
Parktronic system* 260, 458
Cleaning the sensors 350
Malfunction 263
Range of the sensors 260
Switching on/off 263
Warning indicators 262
Warning sounds 262, 263