Page 258 of 314

Replacing bulbs
>> Practical hints.
257
Low beam headlamp bulb
>Removing: Take off low beam headlamp
cover
3.
>Detach the electrical connector.
>Bend the retainer spring end down and
forward until it unclips. Fold the retainer
spring back.
>Pull the bulb out of the headlamp housing.
>Installing: Insert the new bulb into the
headlamp housing.
>Fold the retainer spring forward.
Bend the retainer spring end forward then
up and back to clip in.
>Attach the electrical connector.
>Reinstall low beam headlamp cover
3.High beam headlamp bulb
>Removing: Take off high beam headlamp
cover
4.
>Detach the electrical connector.
>Tilt the bulb socket down and pull it out.
>Pull the bulb out of the bulb socket.
>Installing: Insert the new bulb into the bulb
socket.
>Fit the bulb so that the retaining lug of the
base plate is pointing up.
>Press the bulb into the bulb socket until it
is fully engaged.
>Attach the electrical connector.
>Reinstall high beam headlamp cover
4.Front turn signal lamp bulb
>Removing: Turn bulb socket
2 counter
clockwise by a quarter of turn and pull it out
of the headlamp housing.
>Press gently onto the bulb and turn it
counterclockwise.
>Pull the bulb out of bulb socket2.
>Installing: Insert the new bulb into bulb
socket
2.
>Press gently onto the bulb and turn it
clockwise.
>Insert bulb socket
2 into the headlamp
housing.
The arrow on bulb socket
2 mu st be in l in e
with the line on the headlamp housing.
>Turn bulb socket
2 clockwise by a quarter
of turn.
Page 259 of 314

Replacing bulbs
258
>> Practical hints. Side turn signal lamp bulb
>Removing: Open the door on the corre
sponding side.
1
Retaining lug
>Press on retaining lug
1 in the direction of
the arrow until the side turn signal lamp
housing disengages.
>Use a suitable tool to loosen the side turn
signal lamp housing from the fender.
>Turn the bulb socket counterclockwise and
pull it out out of the side turn signal lamp
housing.
>Pull the bulb out of the bulb socket.>Installing: Insert the new bulb into the bulb
socket.
>Insert the bulb socket into the side turn
signal lamp housing and turn the bulb
socket clockwise.
>Fit the side turn signal lamp housing onto
the fender.
>Press gently onto the side turn signal lamp
housing.
The side turn signal lamp housing must
audibly engage.
Replacing bulbs for rear lampsBefore you start to replace a bulb for a rear
lamp, do the following first:
>Turn exterior lamp switch to positionM
(
page 101).
>Switch off the ignition.
Tail lamp unit
>Removing:
Coupé:
>Open the upper tailgate.
>Open the lower tailgate.
Cabrio:
>Open the lower tailgate
>Open the rear soft top (
page 89)
>Remove the side cover in the cargo
compartment on the corresponding side.
>Fold the damping material forward, if
necessary.
P82.10455631
Page 260 of 314
Replacing bulbs
>> Practical hints.
259
Left bulb carrier illustrated as example1
Retaining tab
2
Electrical connector
>Press retaining tab
1 in the center of the
bulb carrier upwards.
>Pull the bulb carrier out of the tail lamp
housing.Left bulb carrier with bulb sockets (right bulb
carrier in reverse)
1
Retaining tab
3
Brake, tail, turn signal, and sidemarker
lamp bulb
4
Backup lamp bulb
>Depending on which bulb needs to be
replaced, press gently onto bulb
3
or
4
and turn it counterclockwise.
>Pull the bulb out of the bulb socket.>Installing: Insert the new bulb into the bulb
socket.
>Press gently onto the bulb and turn it
clockwise until it engages.
>Insert the bulb carrier into the tail lamp
housing.
>Press gently onto the bulb carrier.
Let retaining tab
1 engage.
>Fold the damping material backward, if
necessary.
>Reinstall the side cover in the cargo com
partment.
P82.10452731
Page 261 of 314

Replacing bulbs
260
>> Practical hints. High mounted brake lamp
1
Retaining screws
2
High mounted brake lamp
3
Bulb socket
>Removing: Unscrew retaining screws
1.
>Remove high mounted brake lamp
2.
>Detach the electrical connector from bulb
socket
3.
>Turn the bulb counterclockwise and pull it
out of its socket.
>Installing: Install in the reverse order.License plate lamps
1
License plate lamp unit jacking point>Use a suitable tool to loosen the corre
sponding license plate lamp unit at jacking
point
1.
>Carefully unclip the license plate lamp unit.
2
Electrical connectors
3
Bulb
>Detach electrical connectors
2.
>Remove bulb
3.
>Insert the new bulb.
>Attach electrical connectors
2.
>Fit the license plate lamp unit on the right
and press gently on the left.
The license plate lamp unit must audibly
engage. P82.10483831
G
Warning!
High outside temperature, stopandgo
traffic, driving on long uphill grades, or
driving at high engine speed may increa
se the temperature in the engine com
partment. Therefore the area around the
air slots in the rear apron may be hot. Let
the engine cool off before touching this
area to prevent burns.
P82.10499931
Page 274 of 314

Battery
>> Practical hints.
273
!
Never loosen or detach battery terminal
clamps while the engine is running or the key
is in the starter switch. Otherwise the alter
nator and other electronic components could
be severely damaged.
Have the battery checked regularly at an
authorized smart center.
Refer to Maintenance Booklet for maintenance
intervals or contact an authorized smart cen
ter for further information.
!
Never invert the terminal connections!
Disconnecting, removing, charg
ing, reinstalling and reconnecting
the batteryDisconnecting the battery
>Set the parking brake.
>Move the gear selector lever to park
positionP.
>Turn off all electrical accessories.
>Turn off the engine.
>Open the passenger door.
>Move the passenger seat to the rear as far
as possible.>Unscrew the carpet holder in the
passenger’s footwell (
page 234).
>Lift the carpet.
1
Footrest
2
Fastening screw
>Unscrew fastening screw
2 counterclock
wise.
>Pull footrest
1 sideways out of the vehicle.
>Read and observe safety instructions and
precautions (page 271).
G
Warning!
With a disconnected battery
• you will no longer be able to turn the
key in the starter switch.
• the gear selector lever will remain
locked in positionP.P54.10283131
Page 276 of 314

Battery
>> Practical hints.
275
>Charge battery in accordance with the
instructions of the battery charger manu
facturer.!
Only use chargers of a correct and suit
able voltage.
!
Never attempt to recharge a frozen bat
tery. Have the battery checked at a smart
center. The battery housing could be dam
aged.Reinstalling the battery
>Reinstall the charged battery. Follow the
previously described steps in reverse
order.
!
The battery, its filler caps and the ventila
tion hose must always be securely installed
when the vehicle is in operation.
Reconnecting the battery
!
Always connect the battery in the order
described below. Otherwise the vehicle’s
electronics can be damaged.
>Turn off all electrical accessories.
>Remove the key from the starter switch.
!
Never invert the terminal connections!
>Connect the battery positive lead and
fasten cover
4 (page 274).
>Connect battery negative lead
3
(
page 274).
i
After battery power (e.g. due to reconnec
tion) was interrupted, you will have to set the
clock (
page 138).
i
Have the battery’s charge status and acid
level checked at the start of the cold season at
a smart center.
G
Warning!
Never charge a battery while still
installed in the vehicle. Gases may escape
during charging and cause explosions
that may result in paint damage, corro
sion or personal injury.
Page 281 of 314
Towing
280
>> Practical hints.
2
Rear cover
>Remove cover
1 or
2 using a suitable
object to reveal the threaded hole for the
towing eye bolt.Installing towing eye bolt
>Screw towing eye bolt in clockwise to its
stop and tighten with a suitable object.
G
Warning!
High outside temperature, stopandgo
traffic, driving on long uphill grades, or
driving at high engine speed may increa
se the temperature in the engine com
partment. Therefore the area around the
air slots in the rear apron may be hot. Let
the engine cool off before touching this
area to prevent burns.P88.20293031
G
Warning!
For safety reasons, recovery or lashing
down of the vehicle by means of the tow
ing eye is not allowed. Failure to observe
this could result in the towing eye being
ripped out of its mounting and people
being injured.
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