2003 MERCEDES-BENZ E320 4MATIC WAGON battery replacement

4 Contents
BRAKE FLUID .............................254
PARKING BRAKE .......................255
ENGINE FAN ...............................255
COOLANT (coolant level) ..........256
COOLANT TEMP. ........................257
LIGHTING SYSTEM ....................258
LIGHT SENSOR ...........................259
REMOVE KEY .............................259
STEERING GEAR OIL .................260
ENGINE OIL LEVEL ................... 261
WASHER FLUID ..........................262
ELEC. STABIL. PROG. (Electronic
stability program) ......................263
TELE AID .....................................263
Practical hintsFirst aid kit .....................................266
Fuses ................................................267
Electrical outlet ..............................269
Hood .................................................270
Checking engine oil level .............273
Automatic transmission fluid
level ............................................. 274Coolant level ....................................274
Adding coolant ........................... 275
Windshield and headlamp washer
system .........................................276
Windshield and headlamp washer
fluid mixing ratio .......................276
Spare wheel, vehicle tools, storage
compartment ............................. 277
Vehicle jack .................................... 278
Wheels ............................................ 279
Tire replacement ....................... 279
Rotating wheels ......................... 280
Spare wheel .................................... 281
Spare wheel bolts ...................... 281
Changing wheels ........................... 282
Tire inflation pressure ................. 287
Battery ............................................. 289
Jump starting ................................. 291
Towing the vehicle ........................ 294
Transmission selector lever,
manually unlocking ................. 296
Exterior lamps ............................... 297
Headlamp assembly .................. 298
Taillamp assemblies .................. 301Changing batteries in the
electronic key ............................304
Synchronizing remote control .306
Emergency engine shut-down .....306
Emergency operation of sliding /
pop-up roof .................................307
Manual release for fuel
filler flap ....................................308
Replacing wiper blade insert .......308
Roof rack ..........................................311
Vehicle careCleaning and care of the vehicle . 314
Power washer .............................. 315
Tar stains ..................................... 315
Paintwork, painted body
components ................................. 315
Engine cleaning .......................... 316
Vehicle washing ......................... 316
Ornamental moldings ................ 316
Headlamps, taillamps, turn signal
lenses ........................................... 316
Cleaning the parktronic system
sensors ......................................... 317

265 Contents – Practical hints
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Practical hintsFirst aid kit .....................................266
Fuses ................................................267
Electrical outlet ..............................269
Hood .................................................270
Checking engine oil level .............273
Automatic transmission fluid
level ............................................. 274
Coolant level ................................... 274
Adding coolant ...........................275
Windshield and headlamp washer
system ......................................... 276
Windshield and headlamp washer
fluid mixing ratio ....................... 276Spare wheel, vehicle tools, storage
compartment ............................. 277
Vehicle jack .................................... 278
Wheels ............................................ 279
Tire replacement ....................... 279
Rotating wheels ......................... 280
Spare wheel .................................... 281
Spare wheel bolts ...................... 281
Changing wheels ........................... 282
Tire inflation pressure ................. 287
Battery ............................................. 289
Jump starting ................................. 291
Towing the vehicle ........................ 294
Transmission selector lever,
manually unlocking ................. 296Exterior lamps ................................297
Headlamp assembly ...................298
Taillamp assemblies .................. 301
Changing batteries in the
electronic key ............................304
Synchronizing remote control .306
Emergency engine shut-down .....306
Emergency operation of sliding /
pop-up roof .................................307
Manual release for fuel
filler flap ....................................308
Replacing wiper blade insert .......308
Roof rack ..........................................311

289 Battery
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Battery
Important!
Battery replacement information:
The battery is located under the rear seat cushion. To
minimize the chance for acid leakage which could cause
severe burns during a crash or rollover, a special acid
leakage resistant battery was factory installed. A
replacement battery for the vehicle must not leak acid when upside down for at least 15 minutes. Your
authorized Mercedes-Benz Center can provide such a
special battery.
The service life of the battery is dependent on its
condition of charge. The battery should always be kept
sufficiently charged, in order to last an optimum length
of time.
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 steering lock position 0. The battery,
its filler caps, the vent tube and the opposite plug must
always be securely installed when the vehicle in
operation.
Wa r n i n g !
Failure to follow these instructions can result in
severe injury or death.Never lean over batteries while connecting, you
might get injured.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..

306 Electronic key
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Important!
Batteries contain materials that can harm the
environment if disposed of improperly. Recycling of
batteries is the preferred method of disposal. For
disposal, please follow manufacturer’s recommendation
on battery package.
Replacement Battery:
Lithium, type CR 2025 or equivalent.Synchronizing remote control
The remote control may have to be resynchronized, if
the vehicle cannot be locked or unlocked.
To synchronize insert electronic key in starter switch.
The remote control should once again be operational.

344 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
RRadio
Audio Systems ............................................................. 97
Radio transmitters ......................................................... 186
Rain sensor ..................................................................... 123
Reading lamps rear compartment ............................... 160
Rear view mirrors ............................................................ 82
Antiglare night position ............................................. 82
Exterior ......................................................................... 83
Inside ............................................................................ 82
Parking position .......................................................... 85
Storing mirror positions in memory ........................ 84
Rear window defroster .................................................. 130
Rear window wiper/washer ......................................... 124
Rear-facing bench seat .................................................. 175
Remote control ................................................................. 27
Battery replacement ................................................. 304
REMOVE KEY - malfunction and warning
messages .................................................................... 259
Replacement keys
Obtaining ..................................................................... 25
Replacing bulbs .............................................................. 297
Replacing wiper blade insert .......................................308
Reporting Safety Defects ................................................ 15
Residual engine heat utilization (REST) .................... 132Roadside assistance ......................................................... 10
Roadside assistance call
See Tele Aid ............................................................... 188
Roof rack .......................................................................... 311
SSafety guidelines for the seat belt, emergency
tensioning device and airbag .................................... 75
Seat belts ...........................................................................57
Fastening ......................................................................59
Rear-facing bench seat ............................................... 61
Seat belt nonusage warning system .........................58
Unfastening .................................................................. 62
Warning lamp ........................................................... 248
Seat belts and integrated restraint system ..................57
Seat heater ........................................................................ 52
Vehicles with seat ventilation ................................... 54
Vehicles without seat ventilation ............................. 53
Seat ventilation ................................................................55
Seats ...................................................................................42
Memory function .........................................................45
Multicontour seat ........................................................ 51
Power seats front .........................................................42