key battery MERCEDES-BENZ SLR CLASS 2007 User Guide

211 Controls in detail
Useful features
Removing mobile phone from mobile
phone cradle
1Release button
2Remove the mobile phone
Press the release button1 and re-
move the mobile phone in direction of
arrow 2 from the mobile phone
cradle.Inserting mobile phone in mobile phone
cradle
Remove the round aerial contact cover
on the back of the mobile phone.
1Insert the mobile phone
2Connector contact
3Mobile phone cradle
Slide the lower end of the mobile phone
in direction of arrow 1 into connector
contact2 on mobile phone cradle3.4Release button
5Engage the cell phone in mobile phone
cradle
Push the top of the mobile phone in di-
rection of arrow5, until the lug on the
mobile phone release button4
engages.
The battery will be charged depending
on its charge status and the position of
the SmartKey in the starter switch. The
charging process is shown in the
mobile phone display.


357 Practical hints
Replacing SmartKey batteries
Replacing SmartKey batteries
If the batteries in the SmartKey are
discharged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an
authorized Mercedes-Benz Center.Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key out of the
SmartKey (
page 355).Warning!G
Batteries contain poisonous and corrosive
substances. Therefore keep the batteries
out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen inserting the batteries, make sure
they are clean and free of lint.
iWhen replacing batteries, always replace
both batteries. The required replacement batter-
ies are available at any Mercedes-Benz Center.

358 Practical hints
Replacing SmartKey batteries
1Mechanical key
2Unlocking the battery compartment
3Removing the battery compartment
4Slide
Insert mechanical key1in side
opening, push gray slide4 in direction
of arrow2.
The battery compartment is unlatched.
Pull battery compartment out of the
housing in direction of arrow3.5Battery
6Contact spring
Remove the discharged batteries.
Using a lint-free cloth, insert new
batteries5 under the contact
spring6 with the plus (+) side facing
up.
Return battery compartment into
housing until it locks into place.
Slide mechanical key1 back into the
SmartKey.
Check the operation of the SmartKey.

368 Practical hints
Batteries
Charging the batteries
You can obtain detailed information on
charging the battery from your authorized
Mercedes-Benz Center.
Warning!G
The brake system requires electrical power
to operate.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. The same applies if
battery is disconnected. To brake, the driver
must then apply significantly greater brake
pedal pressure and depress the pedal much
further to obtain the expected braking ef-
fect. If necessary, apply full pressure to the
brake pedal. Brakes are only applied to the
front wheels. Stopping distance is
increased! Adjust your driving style
accordingly. For more information, see
“Electro-hydraulic brake system”
(
page 86).
Warning!G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch

the gear selector lever will remain
locked in park positionP
Warning!G
Never charge a battery while still installed in
the vehicle unless the battery charge unit
approved by Mercedes-Benz (supplied with
your vehicle) is being used. Gases may es-
cape during charging and cause explosions
that may result in paint damage, corrosion
or personal injury.
A battery charge unit specially adapted for
Mercedes-Benz vehicles and tested and
approved by Mercedes-Benz is available,
permitting the charging of the battery in its
installed position. Contact an authorized
Mercedes-Benz Center for information and
availability. Charge battery in accordance
with the separate operating instructions for
the battery charger.

369 Practical hints
Batteries
Charging with the battery charger
Only use the battery charge unit approved
by Mercedes-Benz and supplied with your
vehicle. This charger is designed to auto-
matically control the charge rate, and
charge the battery or maintain the existing
charge in the battery while the vehicle is
parked and not being driven for long
periods of time (on average approximately
3 weeks or more). Not driving the vehicle
for such extended periods may cause the
charge in the vehicle battery to drop.
Using the charging point
The charging point for the battery charger
is located next to the CD-changer on the
left-hand side in the trunk.1Charging point
Remove the SmartKey from the starter
switch.
Open the cover of the charging
point1.
Connect the battery charger with the
charging point 1.
Observe and follow the separate
operating instructions for the battery
charger.
Charge up the battery.
The battery charger switches off
automatically when the battery is
sufficiently charged.Using the charging terminals
The charging terminals for the battery
charger are located in the trunk under-
neath the interior floor.
1Negative charging terminal
2Positive charging terminal
Connect positive terminal2 and
negative terminal1 with the battery
charger. Start with the positive
terminal2.
Charge up the battery. Observe and fol-
low the separate operating instructions
for the battery charger.

371 Practical hints
Towing the vehicle
Warning!G
The brake system requires electrical power
to operate.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. To brake, the driver
must then apply significantly greater brake
pedal pressure and depress the pedal much
further to obtain the expected braking ef-
fect. If necessary, apply full pressure to the
brake pedal. Brakes are only applied to the
front wheels. Stopping distance is in-
creased! Adapt your driving style according-
ly. For more information, see
“Electro-hydraulic brake system”
(
page 86).
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the
vehicle. Adapt your driving accordingly.
!Towing of the vehicle should only be done
using the properly installed towing eye bolt.
Never attach tow cable, tow rope or tow rod to
the vehicle chassis, frame or suspension parts.
iTo signal turns while being towed with the
hazard warning flasher in use, turn SmartKey in
starter switch to position2 and activate the
combination switch for the left or right turn
signal in the usual manner – only the selected
turn signal will operate.
Upon canceling the turn signal, the hazard
warning flasher will operate again.
iWhen towing the vehicle with all wheels on
the ground, please note the following:
With the automatic central locking activated and
the SmartKey in starter switch position2 the
vehicle doors lock if the left front wheel as well
as the right rear wheel are turning at vehicle
speeds of approximately 9 mph (15 km/h) or
more.
To prevent the vehicle door locks from locking,
deactivate the automatic central locking
(
page 139) and switch off the tow-away alarm
(
page 94).
iThe gear selector lever will remain locked in
park positionP and the SmartKey will not turn in
the starter switch if the battery is disconnected
or discharged. See notes on the battery
(
page 367).

407 Index
B
Backup lamp 360
Messages in the multifunction
display 344
Bar 284
BAS 83, 399
Batteries, SmartKey
Checking battery condition 101
Replacing 357
Batteries, Vehicle 256
Charging 368
Consumer battery 367
Jump starting 367
Maintenance 367
Messages in the multifunction
display 327
Starter battery 256
Batteries, vehicle
Consumer battery 256
Battery charger 369
Bead 284
Bi-Xenon headlamps 399
Body surface 295Brake
Electro-hydraulic brake system 86
Brake Assist System see BAS
Brake disks
Wear 238
Brake fluid 389, 392
Checking 248
Messages in the multifunction
display 330
Brake lamps 360
High mounted 360
Messages in the multifunction
display 341
Brake pads
Messages in the multifunction
display 334
Wear 238
Brakes 236
Excessive loads 238
Warning lamp 29, 303
Break-in period 234
Bulbs
Messages in the multifunction
display 341
Replacing 359C
CAC 399
California retail buyers and lessees, impor-
tant notice for 15
Call priority, Tele Aid 220
CAN system 399
Capacities and recommended
fuel/lubricants 389
Cargo area see Trunk
Cassette player 154
Catalytic converter 244
CD changer 158
Location 159
CD player 127
Cellular phone
Delayed switch-off time 212
Making calls in hands-free mode 213
Making calls in private mode 212
Center console
Lower part 32
Upper part 31
Center storage compartment 207

413 Index
Interior rear view mirror 44
Auto-dimming 182
Interior storage spaces see Storage com-
partments
J
Jacking up the vehicle 362
Jump starting 367
K
Key, Mechanical 355
Key, SmartKey
Battery check lamp 100
Checking the batteries 101
Factory setting 99
Locking/unlocking 98
Locking/unlocking, Global setting 99
Locking/unlocking, Selective
setting 100
Loss of 101
Messages in the multifunction
display 340
Opening and closing the
windows 201, 202
Positions in starter switch 40Remote control 98
Replacing the batteries 357
Turning off the engine 56
Unlocking, Trunk 101
Kickdown 173, 401
Kilopascal 285
Knee air bags 66
L
Labels
Certification 378
Emission control label 378
Vacuum line routing 378
Lamps
Exterior 359
Lamps, exterior
Messages in the multifunction
display 341Lamps, indicator and warning
ABS 29, 302
ABS/ESP
®29, 300
Airbrake 29, 307
Battery, SmartKey 100
Brake 29, 303
Center console 312
Coolant 29, 306
Engine malfunction 29, 304
Engine oil temperature 29, 307
Fog lamps 109
Fuel reserve 29, 307
Gearshift 29, 307
High beam 29
Instrument cluster 300
Low tire pressure telltale 29, 311
PASSENGER AIR BAG OFF 70, 312
Seat belt telltale 29, 308
Seat belts 308–309
SRS 29, 61, 310
Turn signals 29
Language, Setting 133

415 Index
Multifunction display messages
ABS 316, 317
ACL malfunction 323
Airbrake 327
Battery, Vehicle 327
Brake pads 334
Coolant 335
Coolant level 335
Differential 338
Doors 352
Electro-hydraulic brake system 329
Engine oil 339
ESP
®318
Fuel system 339
Hood 352
Lamps 341
Parking brake 334
Passenger front air bag 321
Reserve fuel 340
Seat belt 352
Service brake 334
SmartKey 340
Telephone 340
Tires 346
Trunk lid 352
Washer fluid 352Multifunction steering wheel 30, 118,
401
Button operation 118
N
Net, parcel 207
Neutral gear position, Automatic
transmission 169
Night security illumination 109, 136
Normal occupant weight 285
Number, Vehicle Identification
(VIN) 378, 403
O
Occupant Classification System see OCS
Occupant distribution 285
Occupant safety
Air bags 62
Children and air bags 63
Children in the vehicle 75
Fastening the seat belts 45
Infant and child restraint systems 76
OCS 67
Passenger front air bag off indicator
lamp 70
Seat belts 71
SRS 60OCS 67, 401
Self-test 71
Octane number 402
Odometer
Main 117
Trip 115
Oil level see Engine oil, Checking level
Oil see Engine oil
One-touch gearshifting
Gear selector lever 175
Steering wheel gearshift
control* 177
Operating safety
Audio system 145
Vehicle 20
Operator’s manual 353
Outside temperature 122
Outside temperature see Displays
Overdue maintenance service 293
Overhead control panel 33
Overspeed range, Engine 116, 401

418 Index
Side marker lamps
Messages in the multifunction
display 343
Replacing bulbs 360
Side windows see Power windows
Sidewall 285
SmartKey see Key, SmartKey
Snow chains 291
Snow tires* 290
Spare fuses 373
Spare parts service 376
Speed setting
Cruise control 205
Speed settings
Cruise control 205
Speedometer 29
SRS 60, 402
Indicator lamp 29, 310
Messages in the multifunction
display 323
Standing lamps 106
Standing water, Driving trough 243Start button 48
Starter battery 256, 367
Starter switch 27, 40
Starting difficulties, Engine 49
Starting the engine 47
Steering wheel 42
Buttons 30
Steering wheel gearshift control
Indicator lamp 307
Steering wheel gearshift control one-touch
gearshifting
Automatic transmission 177
Stolen Vehicle Recovery services 221
Storage compartments 206
Armrest 206
Center 207
Map pocket, Passenger footwell 206
Parcel net in trunk 207
Rear 207
Storing tires 261
Submenus see Control system submenus
Sun visors 183
Supplement Restraint System see SRS
Symbols used in this Operator’s
Manual 19T
Tachometer 29
Overspeed range 116
Tail lamps
Messages in the multifunction
display 344
Replacing bulbs 359
Technical data 374
Air conditioning refrigerant 391
Brake fluid 392
Coolants 394
Electrical system 386
Engine 380
Engine oil additives 391
Engine oils 391
Fuel requirements 393
Fuels, coolants, lubricants etc. 389
Gasoline additives 393
Main dimensions 387
Poly-V-belt 379
Premium unleaded gasoline 392