270 OperationVehicle careWiper blades
Fold wiper arms forward.
Clean the wiper blade inserts with a
clean cloth and detergent solution.Window cleaning
Fold wiper arms forward.
Use a window cleaning solution on all
glass surfaces.
An automotive glass cleaner is
recommended.Light alloy wheels
Mercedes-Benz approved Wheel Care
should be used for regular cleaning of the
light alloy wheels.
If possible, clean wheels once a week with
Mercedes-Benz approved Wheel Care,
using a soft bristle brush and a strong
spray of water.
Follow the instructions on container.
Instrument cluster
Use a gentle dishwashing detergent or
mild detergent for delicate fabrics as a
washing solution. Wipe with a cloth moist-
ened in lukewarm solution. Do not use
scouring agents.
Warning!
G
For safety reasons, switch off wipers and
remove SmartKey from starter switch
before cleaning the wiper blades, otherwise
the wiper motor might suddenly turn on and
cause injury.!Fold the windshield wiper arms back
onto the windshield before turning the
SmartKey in the starter switch.
Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
Warning!
G
For safety reasons, switch off wipers and
remove SmartKey from starter switch
before cleaning the windshield, otherwise
the wiper motor might suddenly turn on and
cause injury.!Fold the windshield wiper arms back
onto the windshield before turning the
SmartKey in the starter switch.
Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
iOnly use acid-free cleaning materials.
Acid may cause corrosion or damage
the clear coat.
316 Practical hintsReplacing wiper blades
Replacing wiper bladesRemoving wiper blades
Fold the wiper arm forward.
1Lock
2Unlock
Pull the tab in direction of arrow2 and
remove windshield wiper.
Installing wiper blades
Slide the wiper blade into the cutout on
the wiper arm.
Slide the tab back in the direction of
arrow1 until it audibly engages.
Fold the wiper arm backward to rest on
the windshield. Make sure you hold on
to the wiper when folding the wiper arm
back.
Warning!
G
For safety reasons, remove SmartKey from
starter switch before replacing a wiper
blade. Otherwise the motor could suddenly
turn on and cause injury.
!Never open the hood when the wiper
arms are folded forward.
Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
Do not allow the wiper arms to contact
the windshield glass without a wiper
blade inserted.
Make certain that the wiper blades are
properly installed. Improperly installed
wiper blades may cause windshield
damage.
For your convenience, we recommend
that you have this work carried out by
an authorized Mercedes-Benz Center.
346 Technical dataElectrical system
Electrical systemModel
C230KompressorSport
C 240/C 320 (all models)
C32AMG
Generator (alternator)
14 V/120 A
14 V/120 A
14 V/120 A
Starter motor
12 V/1.1 kW
12 V/1.7 kW
12 V/1.7 kW
Battery
12 V/100 Ah
12 V/100 Ah
12 V/100 Ah
Spark plugs
Bosch F 6 MPP 332
Bosch F 8 DPP 332
NGK PFR 5 R-11
NGK IFR 6 D 10
Electrode gap
0.031 in (0.8 mm)
0.039 in (1.0 mm)
0.039 in (1.0 mm)
Tightening torque
18–22lb-ft (25–30Nm)
15–22lb-ft (20–30Nm)
15 – 22 lb-ft (20 – 30 Nm)
