2003 MERCEDES-BENZ E320 4MATIC WAGON Owner's Manual

238 Parking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
The obstacle may not be recognized if outside the
shaded sensor field, and no longer be indicated when
approaching it any closer (warning indicators go out).
Parktronic malfunction
All red segments of the warning indicators light up, and
a warning sounds for 3 seconds, if Parktronic does not
function properly.
A dirty sensor could be the reason. (See page 317 for
instructions on cleaning the sensors in the bumpers.)
After cleaning the sensors, turn electronic key in
steering lock to position 2. If the defect continues to be
displayed, have the system checked at your authorized
Mercedes-Benz Center.Parktronic switch
The switch is located on the center console.
1Parktronic switched off
2Parktronic switched on
3Indicator lamp – comes on when Parktronic is
switched off
The parktronic system is switched on again when
turning the electronic key in steering lock position 2.3

239 What you should know at the gas station
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index What you should know at the gas station
Fuel supplyOpen flap by pushing near front (arrow). Turn fuel cap
to the left and hold on to it until possible pressure in
tank has been released, then remove cap. Failure to
remove slowly could result in personal injury.
See page 308 for notes on fuel filler flap, manual
release.
Fuel
To prevent fuel vapors from escaping into open air, fully
insert filler nozzle unit. Only fill fuel tank until the filler
nozzle unit cuts out — do not top up or overfill.
Leaving the engine running and the fuel cap open can
cause the “CHECK ENGINE” lamp to illuminate, see
page 244 for notes on the “CHECK ENGINE” lamp.
Wa r n i n g !
Gasoline is highly flammable and poisonous. It
burns violently and can cause serious injury.
Whenever you are around gasoline, avoid inhaling
fumes and skin contact, extinguish all smoking
materials. Never allow sparks, flame or smoking
materials near gasoline!
Wa r n i n g !
Overfilling of fuel tank may result in creating
pressure in the system which could cause a gas
discharge such as the gas spraying back out upon
removing the filler nozzle which could cause
personal injury.

240 What you should know at the gas station
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Fuel tank capacity approximately 21.1 US gal (80.0 l).
This includes approximately 2.6 US gal (10.0 l) reserve.
Use premium unleaded gasoline:
Posted Octane Index 91 (Average of 96 RON / 86 MON).
Engine oil
Engine oil level check, see page 273.
Fill quantity between upper and lower dipstick marking
level: 2.1 US qt (2.0 l).
Recommended engine oils, see Approved Service
Products sheet.
Coolant
For normal replenishing, use water (potable water
quality).
For further information (e.g. anticorrosion /antifreeze),
see page 332.
Spark plugs
Approved spark plugs, see page 326.Tire pressure
For tire pressure, refer to tire pressure label inside the
fuel filler flap.
Air conditioner
R-134a refrigerant and special PAG lubricant, see
page 328.
Bulbs
High and low beams: H7 (55 W),
low beam: Xenon (optional)
fog lamps: H1 (55 W),
turn signal lamps,
front 1156 NA (26.9 / 5 W / 32 / 4 cp),
parking and standing lamps, front: H 6W (6 W)
side marker lamps, front: 5 W / 4 cp,
turn signal lamps, rear: 21 W / 24 cp,
stop, tail and parking lamp: 21 W / 4 cp,
tail, parking and side marker lamp: 5 W / 4 cp,
rear fog lamp, driver’s side: 21 W / 32 cp,
backup lamps: 21 W / 32 cp,
license plate lamps: 5 W / 4 cp

241 Check regularly and before a long trip
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Check regularly and before a long trip
E 320 shown1Windshield washer system
For refilling reservoir see page 276.
2Headlamp cleaning system
Auxiliary tank connected to windshield washer
reservoir. Open filler caps on both reservoirs during
refilling.
3Coolant level
See “Adding coolant”, page 275.
4Engine oil level
See “Checking engine oil level”, page 273.
5Brake fluid
See “Brake fluid”, page 330.
Opening hood, see page 270.
Ve h i c l e l i g h t i n g : Check function and cleanliness. For
replacement of light bulbs, see “Exterior lamps” on
page 297.
Exterior lamp switch, see page 119.
3
2
4
1
5

243 Contents – Instrument cluster display
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Instrument cluster displayMalfunction and indicator lamps in
the instrument cluster .............244
On-board diagnostic system .....244
Check engine malfunction
indicator lamp .............................244
Brake warning lamp ..................245
Supplemental restraint system
(SRS) indicator lamp ..................246
Fuel reserve and fuel cap
placement warning ....................246
Electronic stability program (ESP)
— warning lamp ..........................247
BAS / ESP malfunction indicator
lamp ..............................................247ABS malfunction
indicator lamp ............................ 248
Seat belt warning lamp ............. 248
Malfunction and indicator lamp in
the center console .................... 249
AIRBAG OFF indicator lamp .... 249
Malfunction and warning
messages in the multifunction
display ........................................ 250
DISPLAY DEFECTIVE................ 251
BATTERY / ALTERNATOR ........ 252
ABS-SYSTEM .............................. 253
BRAKE ASSIST........................... 253
BRAKE LINING WEAR .............. 254
BRAKE FLUID ............................ 254PARKING 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

244 Malfunction and indicator lamps
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data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Malfunction and indicator lamps
in the instrument cluster
General information:
If a bulb in the instrument cluster fails to light up
during the bulb self-check when turning the electronic
key in steering lock to position 2, have it checked and
replaced if necessary.
On-board diagnostic system
Check engine malfunction indicator lamp
Engine malfunction indicator lamp. If the
“CHECK ENGINE” malfunction indicator
lamp comes on when the engine is running,
it indicates a malfunction of the fuel management
system, emission control system, systems which impact
emissions, or the fuel cap is not closed tight (check the
fuel cap). If the “CHECK ENGINE” lamp is illuminated
continuously and the vehicle is driving normally, you
may still drive the vehicle, however, in all cases, we
recommend that you have the system checked at your
authorized Mercedes-Benz Center as soon as possible. If the “CHECK ENGINE” lamp comes on continuously
and / or the vehicle is not driving normally, serious
damage can occur to the emission system. Please
contact your authorized Mercedes-Benz Center
immediately.
The Sequential Multiport Fuel Injection (SFI) control
module monitors emission control components that
either provide input signals to or receive output signals
from the control module. Malfunctions resulting from
interruptions or failure of any of these components are
indicated by the “CHECK ENGINE” malfunction
indicator lamp in the instrument cluster and are
simultaneously stored in the SFI control module.
If the “CHECK ENGINE” malfunction indicator lamp
comes on, have the system checked at your authorized
Mercedes-Benz Center as soon as possible.
With some exceptions, the control module switches off
the “CHECK ENGINE” malfunction indicator lamp if the
condition, causing the lamp to come on, no longer exists
during three consecutive cycles. See also page 246 for
fuel cap placement warning.
CHECK
ENGINE

245 Malfunction and indicator lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index An on-board diagnostic connector is located in the
passenger compartment near to the parking brake
pedal, allowing the accurate identification of system
malfunctions through the readout of diagnostic trouble
codes.
Brake warning lamp
Except Canada
Canada only
When the brake warning lamp and message appear
while the engine is running, this means:
•there is insufficient brake fluid in the reservoir
(engine running and parking brake released), or
•the parking brake is set (engine running).Note:
If you find that the brake fluid in the brake fluid
reservoir has fallen to the minimum mark or below,
have the brake system checked for brake pad thickness
and leaks.
BRAKE
Wa r n i n g !
Driving with the brake warning lamp illuminated
can result in an accident. Have your brake system
checked immediately if the brake warning lamp
stays on. Don’t add brake fluid before checking the
brake system. Overfilling the brake fluid reservoir
can result in spilling brake fluid on hot engine
parts and the brake fluid catching fire. You can be
seriously burned.