Malfunction display MERCEDES-BENZ C320 2001 W203 Workshop Manual

289 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index WA S H E R F L U I D
* C = Category, see page 274.
When this message appears while the engine is
running, the level of the reservoir has dropped to
approximately
1/3 of the total volume. The reservoir
should be refilled with the prescribed mixture of MB
Windshield washer concentrate and water or the
concentrate and commercially available premixed
windshield washer solvent / antifreeze, depending on
ambient temperature, at the next opportunity. The
reservoir for the windshield and headlamp washer
systems is located in the engine compartment.
See windshield and headlamp washer system on
page 302 for instructions on topping up the washer
fluid.
Line 1 Line 2 C*
WASHER FLUID CHECK LEVEL! 3

290 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
RESTRAINT SYSTEM
* C = Category, see page 274.See page 55 for notes on the seat belts, and page 65 for
notes on the airbags.KEY
* C = Category, see page 274.
1 Key needs possibly to be replaced. Line 1 Line 2 C*
RESTRAINT SYSTEM VISIT WORKSHOP! 1Line 1 Line 2 C*
REPLACE KEY
1
VISIT WORKSHOP! 2
AUTOM. LIGHT ON REMOVE KEY! 1

291 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index FUEL RESERVE
* C = Category, see page 274.
UNDERVOLTAGE* C = Category, see page 274. Line 1 Line 2 C*
RESERVE FUEL VISIT FILLING STATION! 2Line 1 Line 2 C*
UNDERVOLTAGE ENGINE ON! 1
UNDERVOLTAGE CONSUMER DEFECTIVE! 1

292 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
STEERING WH. ADJUST
* C = Category, see page 274.For locking the manual steering wheel adjustment,
seepage77.ENTRANCE POSITION
* C = Category, see page 274.Wait until the seat and steering wheel have moved to
their driving positions. The display will clear when they
have done so.
See also page 41 for easy-entry/exit feature.
Line 1 Line 2 C*
STEERING WH. AD JU ST LOCK! 1
Line 1 Line 2 C*
ENTRANCE POSITION DO NOT DRIVE! 1

295 Fuses
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Fuses
Most of your vehicle’s electrical components are fused
with safety fuses. With the exception of the brake lights,
all individual lighting system components are
electronically fused. Before replacing a blown safety
fuse, determine the cause of the short circuit. Always
observe amperage and color of fuse.
The circuit for components is protected by a cycled
circuit breaker interrupted if too much current is being
drawn. The circuit closes automatically after a short
time; the circuit is broken again if the malfunction
reoccurs.
A lways us e a new fus e for re placeme nt. Never atte mp t to
repair or bridge a blown fuse.
A fuse chart is located in fuse box (1).
A fuse extractor is located in the auxiliary fuse box in
the trunk, see page 296.Fuse box in the passenger compartment
1Fuse box in passenger compartment
To gain access to fuse box, pull cover away from fuse
box (arrow) and remove rearward.

300 Engine compartment
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Checking engine oil level
1Oil filler capTo check the engine oil level, park vehicle on level
ground, with engine at normal operational temperature.
Check engine oil level approximately 5 minutes after
stopping the engine, allowing for the oil to return to the
oil pan.
The engine oil level can be checked via the
multifunction display in the instrument cluster.
Unscrew the oil filler cap and add oil carefully if you
need to top up the oil. Fill quantity between upper and
lower dipstick marking level is approximately 2.1 US qt
(2.0 l). Re-install oil filler cap.
Do not overfill the engine.
Excessive oil must be drained
or siphoned. It could cause damage to engine and
catalytic converter not covered by the Mercedes-Benz
Limited Warranty.
See malfunction and warning messages on page 274 if
an engine oil level display appears on the multifunction
indicator when the engine is running.
Note:
See page 128 for engine oil level indicator.

301 Engine compartment
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Automatic transmission fluid level
The transmission has a permanent fill of automatic
transmission fluid.
Regular automatic transmission fluid level checks and
changes are not required. For this reason the dipstick is
omitted.
If you notice fluid leaks or gear shifting malfunctions,
have your authorized Mercedes-Benz Center check the
transmission fluid level.Coolant level
1Coolant expansion tank
To check the coolant level, the vehicle must be parked
on level ground and the engine stopped.
Check coolant level only when coolant is cold.
The coolant level should reach the black top part of the
reservoir.
See page 359 for antifreeze / anticorrosion mixture.

330 Exterior lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
License plate lamp
Loosen both securing screws (1), remove lamp and
replace tubular lamp (C 5 W/4 cp).High mounted stop lamp,
Additional turn signals on the exterior mirror
The high mounted stop lamp (3rd brake lamp), and the
additional turn signals on the exterior mirrors are
equipped with LEDs.
Have the system checked at an authorized
Mercedes-Benz Center if a malfunction occurs.

331 Trunk lamp
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Standby bulb function
a) The stop lamps, dimmed, will act as a replacement
lamp, if one taillamp stops working.
b) The left stop lamp acts as a replacement for the rear
fog lamp, if it stops working.
c) The respective fog lamp, dimmed, will act as a
replacement lamp, if the left or right standing lamp
stops working.
Notes:
The multifunction display will indicate that a bulb has
failed. See malfunction and warning messages on
page 274.Trunk lamp
The trunk lamp will switch off after approximately
10 minutes if the trunk lid is left open.

335 Emergency engine shut-down
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Fuel filler flap, manual release
Open the trunk lid and fold right-side taillamp trim
aside. Reach inside and pull the release knob (arrow).
Open the fuel filler flap.Emergency operation of sliding / pop-up roof
The sliding / pop-up roof can be opened or closed
manually should an electrical malfunction occur.
The sliding / pop-up roof drive is located behind the
lens (1) of the interior overhead light.