
331 Engine compartment
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Auxiliary fuse box below rear seat
4Auxiliary fuse box below right rear seat
To o pen :
Rem ove the cover.
To cl os e:
Press the cover on.Hood
4
P82.10-0911-26
Wa r n i n g !
To help prevent personal injury, stay clear of
moving parts when the hood is open and the engine
is running. Be sure the hood is properly closed
before driving. When closing hood, use extreme
caution not to catch hands or fingers.The radiator fan may continue to run for
approximately 30 seconds or even restart after the
engine has been turned off. Stay clear from fan
blades.If you see flames or smoke coming from the engine
compartment, or if the coolant temperature gauge
indicates that the engine is overheated, do not open
the hood. Move away from vehicle and do not open
the hood until the engine has cooled. If necessary,
call a fire department.

342 Tires, Wheels
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Spare wheel S 55 AMG and Sport Package
S55AMG, S600 with Sport Package:
The spare wheel rim size is 7
1/2 J x 17 H2 with tire size
225 / 60 R17 98H.
S 430, S 500 with Sport Package:
The spare wheel rim size is 7
1/2 J x 16 H2 with tire size
225 / 60 R16 98H.
In the case of a f lat tire or breakdown, you may
temporarily use the spare wheel, while observing the
following restrictions:
•Do not exceed vehicle speed of 50 mph (80 km / h).
•Drive to the nearest repair facility to have the f lat
tire repaired or replaced as appropriate.
•Do not operate vehicle with more than one spare
wheel mounted.
For additional information, refer to page 390.
Wa r n i n g !
The spare wheel rim is for temporary use only. Use
for over a total of 12 000 miles (20 000 km) may
cause wheel rim failure leading to an accident and
possible injuries. The dimensions of the spare wheel are different
from those of road wheels. As a result, the vehicle
handling characteristics change when driving with
a mounted spare wheel.The spare wheel should only be used temporarily,
and replaced with a regular road wheel as quickly
as possible.

350 Battery
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Therefore, we strongly recommend that you have the
battery charge checked frequently, and corrected if
necessary, especially if you use the vehicle less than
approximately 200 miles (300 km) per month,
mostly for short distance trips, or if it is not used for
long periods of time.
Only charge a battery with a battery charger after the
battery has been disconnected from the vehicle’s
electrical circuit.
Always disconnect the battery negative lead first and
connect last.
When removing and connecting the battery, always
make sure that all electrical consumers are off and the
electronic key is in starter switch position 0. The
battery, its filler caps, the vent tube and the opposite
plu g must always b e securely installed w hen the veh icle
is in operation.
While the engine is running the battery terminal clamps
must not be loosened or detached, otherwise the
generator and other electronic components would be
damaged.Note:
After reconnecting the battery also set the clock (see
COMAND operator’s manual) resynchronize the front
seat head restraints, the express feature of the power
windows, the sliding / pop-up roof, and the electronic
stability program (see head restraints on page 72, power
windows on page 181, and electronic stability program
on page 274).
Battery recycling
Batteries contain materials that can harm the
environment with improper disposal.
Large 12 Volt storage batteries contain lead.
Recycling of batteries is the preferred method of
disposal.
Many states require sellers of batteries to accept old
batteries for recycling.

352 Jump starting
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Proceed as follows:
1. Position the vehicle with the charged battery so that
the jumper cables will reach, but never let the
vehicles touch. Make sure the jumper cables do not
have loose or missing insulation.
2. On both vehicles:
•Turn off engine and all lights and accessories,
except hazard warning flashers or work lights.
•Apply parking brake and shift selector lever to
position “P”.
Important!
3. Clamp one end of the first jumper cable to the
positive (+) terminal of the discharged battery and
the other end to the positive (+) terminal of the
charged battery. Make sure the cable clamps do not
touch any other metal parts.
4. Clamp one end of the second jumper cable to the
grounded negative (–) terminal of the charged
battery and the final connection to the negative (–)
under hood terminal of the disabled vehicle.Important!
5. Start engine of the vehicle with the charged battery
and run at high idle. Make sure the cables are not
on or near pulleys, fans, or other parts that move
when the engine is started. Allow the discharged
battery to charge for a few minutes. Start engine of
the disabled vehicle in the usual manner.
6. After the engine has started, remove jumper cables
by exactly reversing the above installation
sequence, starting with the last connection made
first. When removing each clamp, make sure that it
does not touch any other metal while the other end
is still attached.
Note:
If engine does not run after several unsuccessful
starting attempts, have it checked at the nearest
authorized Mercedes-Benz Center.
Excessive unburned fuel may damage the catalytic
converter.

378 Cleaning and care of the vehicle
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar careIndex
Cleaning the Distronic system sensor
Use a mild car wash detergent, such as Mercedes-Benz
approved Car Shampoo, with plenty of water to clean
the sensor (1).
To prevent scratches, never apply strong force and only
use a soft non-scratchy cloth when cleaning the sensors.
Do not attempt to wipe dirty sensors with a dry cloth or
sponge.
Note:
Restart the engine after cleaning the sensor (1).Cleaning the parktronic system sensors
Use a mild car wash detergent, such as Mercedes-Benz
approved Car Shampoo, with plenty of water.
When using a steam cleaner or power washer, aim
nozzle only briefly from a minimum distance of 4 in.
(10 cm) at sensors (1).
To prevent scratches, never apply strong force and use
only a soft, non-scratchy cloth when cleaning the
sensors. Do not attempt to wipe dirty sensors with a dry
cloth or sponge.
P54.25-2003-26
1

402 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Index
AABS (Antilock brake system) .......................................272
Malfunction indicator lamp .....................................300
Active body control (ABC) ............................................278
Fluid level ...................................................................335
ACTIVE BODY CONTROL (ABC) -
malfunction and warning messages ...................... 314
Adaptive damping system (ADS) .................................283
Adjusting steering wheel .............................................. 105
Air conditioner refrigerant ...........................................396
Air distribution, manual ............................................... 169
AIR SPRING (AirMatic) -
malfunction and warning messages ......................325
Air volume, manual ....................................................... 169
Airbag deactivation system ............................................ 91
AIRBAG OFF indicator lamp ........................................302
Airbags .............................................................................. 94
Airmatic system .............................................................279
Airmatic system
(Vehicles with Active Body Control) ......................280
Alarm system ............................................................. 62, 64
Anticorrosion/antifreeze ................... 251, 336, 394, 398Antilock brake system (ABS) ...................................... 272
Malfunction indicator lamp .................................... 300
Antitheft alarm system ...................................................62
Aquaplaning .................................................................. 248
Armrest, rear seat .......................................................... 198
Ashtrays ...........................................................................201
Center console ...........................................................201
Rear doors ................................................................. 202
Audio systems .................................................................125
Cassette player ..........................................................127
CD Player ....................................................................126
Radio ...........................................................................125
Automatic central locking ..............................................52
Automatic climate control ............................................ 164
Activated charcoal filter ...........................................172
Adjustable air outlets,
rear passenger compartment ............................. 176
Air distribution, manual .......................................... 169
Air volume, manual .................................................. 169
Basic setting ............................................................... 168
Defogging windows ...........................................170, 171
Defrosting ...................................................................170
Display and controls ................................................. 166
Dust filter ................................................................... 167
Economy mode ..........................................................173

403 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex Front center console storage
compartment ventilation .................................... 175
Rear window defroster ............................................. 180
Residual engine heat utilization (REST) ............... 174
Special settings ......................................................... 169
Switching on and off ................................................ 175
Automatic climate control, rear
Air volume, manual .................................................. 178
Basic setting .............................................................. 178
Automatic transmission ...............................................233
Emergency operation ............................................... 241
Fluid level ...................................................................335
Program mode selector switch ...............................240
Selector lever position ..............................................236
BBabySmart
TM airbag deactivation system ..................... 91
Self-test ......................................................................... 91
BAS (Brake assist system) ............................................ 271
Battery .............................................................................349
Battery recycling .......................................................350
BATTERY / ALTERNATOR -
malfunction and warning messages ......................305
Block heater .................................................................... 251BRAKE ASSIST -
malfunction and warning messages ..................... 306
Brake assist system (BAS) ............................................ 271
Brake fluid ..................................244, 293, 298, 394, 396
BRAKE FLUID -
malfunction and warning messages ..................... 307
BRAKE LINING WEAR -
malfunction and warning messages ..................... 307
Brake pad wear .............................................................. 307
Brake warning lamp ..................................................... 298
Brake fluid low ......................................................... 298
Brakes ........................................... 242, 244, 271, 272, 274
CCapacities
Fuels, coolants, lubricants etc. .............................. 394
Card, KEYLESS-GO ..........................................................28
Catalytic converter ........................................................ 224
Center console .................................................................. 24
Center console lighting ................................................. 189
Central locking switch .................................................... 50
Central locking system .................................................... 34
Automatic central locking .........................................52
Choosing global or selective mode .....................37, 43
Electronic main key .................................................... 29

404 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Electronic reserve key ................................................ 30
KEYLESS-GO-card ....................................................... 31
Locking and unlocking .............................................. 36
Locking and unlocking
with KEYLESS-GO-card ......................................... 40
Mechanical keys ................................................... 30, 47
Remote control ..................................................... 28, 34
Simultaneous use of
electronic main key
and KEYLESS-GO-card .......................................... 44
Summer opening/convenience feature ................... 45
Changing batteries in the
KEYLESS-GO-card .....................................................366
Changing wheels ...........................................................343
CHECK ENGINE
malfunction indicator lamp .....................................296
Check regulary and before a long trip .......................293
Checking engine oil level
Via engine oil level indicator .................................. 154
Via oil dipstick ...........................................................334
Child restraint ...........................................84, 91, 102, 104
CHIP-CARD (KEYLESS-GO) -
malfunction and warning messages ......................322
Cleaning and care of the vehicle ................................. 374
COMAND, radio and telephone ................................... 212
Combination switch ...................................................... 160Consumer information ................................................. 400
Control and operation
of radio transmitters ................................................. 212
COOLANT (coolant level) -
malfunction and warning messages ...................... 310
COOLANT (coolant temperature) -
malfunction and warning messages ...................... 311
Coolant level
Adding ........................................................................ 336
Checking .................................................................... 336
Coolant temperature gauge .......................................... 117
Coolants .......................................................................... 398
Anticorrosion/antifreeze quantity ........................ 399
Courtesy lighting ........................................................... 189
Cruise control ................................................................ 253
CRUISE CONTROL -
malfunction and warning messages ...................... 319
Cup holder
In front seat armrest ................................................. 199
In rear seat armrest ................................................. 200
DDashboard ......................................................................... 22
Daytime running lamp .................................................. 158