Page 213 of 409

212 Controls in detailUseful featuresWhen the connection is established, the
message
Call connected
appears in the
multifunction display. The Tele Aid system
will transmit data generating the vehicle
identification number, model, color and lo-
cation (subject to availability of cellular
and GPS signals).
A voice connection between the Roadside
Assistance dispatcher and the occupants
of the vehicle will be established.
Describe the nature of the need for as-
sistance.
The Mercedes-Benz Roadside Assistance
dispatcher will either dispatch a qualified
Mercedes-Benz technician or arrange to
tow your vehicle to the nearest authorized
Mercedes-Benz Center. For services such
as labor and/or towing, charges may ap-
ply. Refer to the Roadside Assistance
Manual for more information.These programs are only available in the
USA:
Sign and Drive services: Services such
as jump start, a few gallons of fuel or
the replacement of a flat tire are ob-
tainable.iThe indicator lamp in the Roadside
Assistance button• remains illumi-
nated in red for approximately
10 seconds during the system
self-check after switching on the igni-
tion (together with the SOS button and
the Information button¡).
See system self-check (
page 209) if
the indicator lamp does not come on in
red or stays on longer than approxi-
mately 10 seconds.
If the indicator lamp in the Roadside
Assistance button• is illuminated
continuously and there was no voice
connection to the Response Center es-
tablished, then the Tele Aid system
could not initiate a Roadside
Assistance call (e.g. the relevant cellu-
lar phone network is not available). The
message
Call failed!
appears in the
multifunction display.
Roadside Assistance calls can be ter-
minated using the ìbutton on the
multifunction steering wheel.
Page 252 of 409

251 OperationTrunk
Trunk
Batteries
Your vehicle is equipped with two batter-
ies.
Starter battery in the trunk
Consumer battery in the trunk
These batteries should always be suffi-
ciently charged in order to achieve its rat-
ed service life. A flat battery must be fully
recharged. Refer to Maintenance Booklet
for battery maintenance intervals.
If you use your vehicle mostly for
short-distance trips, you will need to have
the battery charge checked more
frequently.
When replacing batteries, always use bat-
teries approved by Mercedes-Benz. Have
this work only carried out by an authorized
Mercedes-Benz Center.
If you do not intend to operate your vehicle
for an extended period of time, consult an
authorized Mercedes-Benz Center about
steps you need to observe.For more information on battery mainte-
nance, see “Batteries” (
page 356).
G
Observe all safety instructions
and precautions when handling
automotive batteries.
A
Risk of explosion.
D
Keep flames or sparks away
from battery. Do not smoke.
B
Battery acid is caustic. Do not
allow it to come into contact
with skin, eyes or clothing.
In case it does, immediately
flush affected area with clean
water and seek medical help if
necessary.
E
Wear eye protection.
C
Keep children away.
F
Follow the instructions in this
Operator’s Manual.
!You must not jump start the vehicle,
otherwise the vehicle electrical sys-
tems could be damaged.
Page 357 of 409

356 Practical hintsBatteries Your vehicle is equipped with two batter-
ies:
The starter battery (located in the
trunk)
The battery for electrical consumers
(located in the trunk)
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Never lean over batteries while connecting,
you might get injured.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 251).
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
!You must not jump start the vehicle,
otherwise the vehicle electrical sys-
tems could be damaged.
Only use the battery charge unit tested
and approved by Mercedes-Benz for
use on the SLR to charge the battery or
maintain the battery charge. Using oth-
er battery chargers may cause damage
to the vehicle and/or personal injury.
Information on charging the batteries
(page 358).
Have the batteries checked regularly
by an authorized Mercedes-Benz
Center. Refer to Maintenance Booklet
for maintenance intervals or contact an
authorized Mercedes-Benz Center for
further information.
If it is necessary to replace the batter-
ies, notify an authorized
Mercedes-Benz Center.
Page 393 of 409

392 IndexAutomatic climate control 182
Adjusting air volume 186
Air conditioning refrigerant 378
Air conditioning, Cooling 192
Air distribution 187
Air recirculation mode 188
Air vents 183
Control panel 184
Deactivating system 191
Defrosting 181, 188
MAXCOOL 187
Residual heat utilization 190
Side air vents 31
Temperature 185
Temperature sensor 33
Automatic headlamp mode 106
Automatic lighting control, Interior
lighting 111Automatic transmission 167
Accelerator position 173
Damage 362
Driving tips 173
Emergency operation (Limp Home
Mode) 178
Gear ranges 170
Gear selector lever 32, 167
Gear selector lever position 167, 171
Gear shifting malfunctions 178
Kickdown 173
Manual gearshift program 176
Manual shifting 168
One-touch gearshifting 168
Shift program mode selector
switch 173
Starting the engine 49
Steering wheel gearshift control 174
Towing 362
Transmission fluid level 249
Automatic transmission fluid 249B
BabySmart
TM
Airbag deactivation system 75, 385
Compatible child seats 385
Self-test 75
Backup lamp 349
Messages in the multifunction
display 332
Bar 281
BAS 81, 385
Batteries, SmartKey
Checking battery condition 99
Replacing 346
Batteries, Vehicle 251
Charging 358
Consumer battery 356
Jump starting 356
Maintenance 356
Messages in the multifunction
display 315
Starter battery 251
Batteries, vehicle
Consumer battery 251
Battery charger 358
Bead 281
Bi-Xenon headlamps 385
Page 399 of 409

398 IndexInstrument cluster 28, 113, 387
Illumination brightness 113
Lamps 298
Messages in display see Multifunction
display messages
Multifunction display 117
Instrument lighting 113
Instrument panel see Instrument cluster
Instruments and controls see Cockpit
Interior lighting 111
Delayed switch-off 135
Interior rear view mirror 44
Auto-dimming 179
Interior storage spaces see Storage com-
partments
J
Jacking up the vehicle 351
Jump starting 356K
Key, Mechanical 344
Key, SmartKey
Battery check lamp 98
Checking the batteries 99
Factory setting 98
Locking/unlocking 96
Locking/unlocking, Global setting 98
Locking/unlocking, Selective
setting 98
Loss of 99
Messages in the multifunction
display 329
Opening and closing the
windows 195, 196
Positions in starter switch 40
Remote control 96
Replacing the batteries 346
Turning off the engine 58
Unlocking, Trunk 99
Kickdown 173, 387
Kilopascal 282
Knee airbags 68L
Labels
Certification 368
Emission control label 368
Vacuum line routing 368
Lamps
Exterior 348
Lamps, exterior
Messages in the multifunction
display 330
Lamps, indicator and warning
ABS 29, 299
ABS/ESP
®
29, 298
Airbrake 29, 303
Battery, SmartKey 98
Brake 29, 300
Center console 306
Coolant 29, 302
Engine malfunction 29, 301
Engine oil temperature 29, 303
Fog lamps 108
Fuel reserve 29, 303
Gearshift 29, 303
High beam 29
Instrument cluster 298
Maintenance service indicator 289