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Driving and operating213Vehicles with misfuel inhibitor9Warning
Do not try to open the flap of the
fuel filler neck manually on
vehicles with misfuel inhibitor.
Disregarding this could lead to
trapping of the fingers.
Vehicles with a selective catalytic
reduction system are equipped with a
misfuel inhibitor.
The misfuel inhibitor ensures that the flap of the fuel filler neck can only be
opened by using a nozzle for diesel
fuel or a funnel for emergency
refilling.
Turn the fuel filler cap slowly
anticlockwise.
The cap can be retained in the
bracket on the fuel filler flap.
Place the nozzle in a straight line to the filler neck and press with slight
force to insert.
In case of an emergency refill with a
canister, a funnel must be used to
open the cap of the filler neck.The funnel is located on the right-
hand side storage compartment in the load compartment.
Place the funnel in a straight line to
the filler neck and press with slight force to insert.
Use the funnel to fill the diesel fuel into
the filler neck.
After topping-up, put the funnel into
the plastic bag and stow it in the storage compartment.
Selective catalytic reduction system
3 165.
Natural gas refuelling
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220Driving and operatingChecking the tensioning of the
coupling ball bar
● Red marking on rotary knob must
point towards green marking on
coupling ball bar.
● The gap between the rotary knob
and the coupling ball bar must be approx. 6 mm.
● The key must be in position c.
Otherwise, the coupling ball bar must be tensioned before being inserted:
● Unlock coupling ball bar by turning key to position c.
● Pull out rotary knob and turn
clockwise as far as it will go.
Inserting the coupling ball bar
Insert the tensioned coupling ball bar
in the opening and push firmly
upwards until it audibly engages.
The rotary handle snaps back into its
original position resting against the
coupling ball bar without a gap.9 Warning
Do not touch rotary handle during
insertion.
Lock the coupling ball bar by turning
the key to position e. Remove the key
and close the protective flap.
Eye for break-away stopping cable
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Driving and operating221Attach breakaway stopping cable to
eye.
Check that the coupling ball bar is
correctly installed
● Green marking on rotary knob must point towards green
marking on coupling ball bar.
● There must be no gap between the rotary handle and the
coupling ball bar.
● The coupling ball bar must be firmly engaged in the opening.
● The coupling ball bar must be locked and the key removed.9Warning
Towing a trailer is permitted only
when a coupling ball bar is fitted correctly. If the coupling ball bardoes not engage correctly, seekthe assistance of a workshop.
Dismounting the coupling ball bar
Open the protective flap and turn the
key to position c to unlock the
coupling ball bar.
Pull out rotary handle and turn
clockwise as far as it will go. Pull out coupling ball bar downwards.
Insert sealing plug in opening. Fold away socket.
Trailer stability assist
If the system detects snaking
movements, engine power is reduced
and the vehicle/trailer combination is
selectively braked until the snaking ceases. While system is working keep steering wheel as still as possible.
Trailer stability assist (TSA) is a
function of the Electronic Stability
Control 3 176.
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Vehicle care231Wiper blade on the rear window
Lift wiper arm. Disengage wiper bladeas shown in illustration and remove.
Attach the wiper blade slightly angled
to the wiper arm and push until it
engages.
Lower wiper arm carefully.
Bulb replacement
Switch off the ignition and switch off
the relevant switch or close the doors.
Only hold a new bulb at the base. Do not touch the bulb glass with bare
hands.
Use only the same bulb type for
replacement.
Replace headlight bulbs from within
the engine compartment.
Halogen headlights
Bi-Halogen headlight (1) with one
bulb for low and high beam.
Front turn signal (2) .
Sidelight/Daytime running light (3) .
Low/High beam (1) 1. Rotate the cap (1) anticlockwise and remove it.
2. Rotate the bulb holder anticlockwise to disengage.
Withdraw the bulb holder from the
reflector.
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232Vehicle care
3. Disengage the bulb holder fromthe plug connector by pressing
the retaining lug.
4. Replace the bulb and connect bulb holder to the plug connector.
5. Insert the bulb holder, engaging the two lugs into the reflector and
rotate clockwise to secure.
6. Fit the cap and rotate clockwise.
Front turn signal (2)
1. Rotate bulb socket (2) anticlockwise to disengage.
Withdraw the bulb socket from the
reflector.
2. Remove the bulb from the socket by turning anticlockwise.
3. Replace and insert new bulb into socket by turning clockwise.
4. Insert the bulb socket into the reflector and turn clockwise.
Sidelight/Daytime running light
(3)
1. Rotate bulb socket (3) anticlockwise to disengage.
Withdraw the bulb socket from the
reflector.
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Vehicle care233
2. Remove the bulb from the socketby pulling.
3. Replace and insert new bulb into socket.
4. Insert the bulb socket into the reflector and turn clockwise.
Adaptive forward lighting9 Danger
Adaptive forward lighting system
uses Xenon headlights.
Xenon headlights work under
extremely high electrical voltage.
Do not touch. Have bulbs replaced by a workshop.
Bulbs for front turn signal and
corner lighting can be replaced.
Corner lighting (1) .
Front turn signal (2) .
Sidelight/Daytime running lights are
designed as Light Emitting Diodes
(LEDs) and cannot be replaced.
Corner lighting (1) 1. Rotate the cap (1) anticlockwise and remove it.
2. Rotate the bulb holder anticlockwise to disengage.
Withdraw the bulb holder from the
reflector.
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234Vehicle care
3. Disengage the bulb from the plugconnector by pulling.
4. Replace the bulb and connect bulb holder to the plug connector.
5. Insert the bulb holder, engaging the two lugs into the reflector and
rotate clockwise to secure.
6. Fit the cap and rotate clockwise.
Front turn signal (2)
1. Rotate bulb socket (2) anticlockwise to disengage.
Withdraw the bulb socket from the
reflector.
2. Remove the bulb from the socket by turning anticlockwise.
3. Replace and insert new bulb into socket by turning clockwise.
4. Insert the bulb socket into the reflector and turn clockwise.
Fog lights
The bulbs are accessible from
beneath the vehicle.
1. Remove the outer screws of the cover, marked by the arrows.
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Vehicle care235
2. Hinge away the cover.Turn the bulb socket
anticlockwise and remove it from
the reflector.
3. Disengage the bulb socket from the plug connector by pressing
the retaining lug.
4. Remove and replace the bulb socket with bulb and attach to the
plug connector.
5. Insert the bulb socket into the reflector, turn clockwise and
engage.
6. Mount the cover with the screws.
Tail lights
1. Hinge out the screw cover.
2. Remove the screws, marked by the arrows.
3. Carefully withdraw the light assembly from the retaining pins
and remove.