Page 285 of 376
285 Practical hints
What to do if …
Left display
Right display
Possible cause
Possible solution
H
Tire pressure, FL
Check tires!
The left front tire pressure is low.
Carefully bring the vehicle to a halt.
Check the tire pressure.
Change the wheel (
page 312).
Tire pressure, FR
Caution
tire defect!
The right front tire is rapidly deflat-
ing.
Carefully bring the vehicle to a halt, avoiding
abrubt steering and braking maneuvers.
Change the wheel (
page 312).
Tire pressure, FR
Check tires!
The right front tire pressure is low.
Carefully bring the vehicle to a halt.
Change the wheel (
page 312).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle. Continued
driving with a flat tire will cause excessive
heat build-up and possibly a fire.
Page 286 of 376

286 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
I
Remove key!
You have forgotten to remove the
key.
Remove the key from the starter switch.
Replace key
The batteries in the key are dead.
Change the batteries (
page 293).
Automat. light on
Remove key!
Remove the key from the starter switch.
A
Reserve fuel
The fuel level has dropped below
the reserve mark.
Refuel at the next gas station (
page 225).
The fuel cap is not closed tightly.
Check the fuel cap (
page 225).
J
Door open!
You are attempting to drive with
one or more doors open.
Close the doors.
C
Raise
roll-over bar
The roll bar is malfunctioning.
Raise the roll bar using the roll bar switch
(page 61).
Have the roll bar checked by an authorized
Mercedes-Benz Center.
G
Display defective
Visit workshop!
The displays for several systems
have malfunctioned. Some sys-
tems themselves may also have
malfunctioned.
Have the electronic systems checked by an au-
thorized Mercedes-Benz Center.
Page 287 of 376
287 Practical hints
What to do if …
Left display
Right display
Possible cause
Possible solution
K
Visit workshop!
The retractable hardtop is mal-
functioning.
Have the retractable hardtop checked by an au-
thorized Mercedes-Benz Center.
Lock
hardtop
The roof is not properly locked.
Push or pull on the retractable hardtop switch
until the indicator lamp in the switch goes out
and the roof is completely open or closed
(page 159).
±
Display defective
Visit workshop!
Certain electronic systems are un-
able to relay information to the
control system. The following sys-
tems may have failed:
Coolant temperature gauge
Tachometer
Cruise control display
Have the electronic systems checked by an au-
thorized Mercedes-Benz Center (
page 256).
W
Washer fluid
Check level!
The fluid level has dropped to
about 1/3 of total reservoir ca-
pacity.
Add washer fluid (
page 233).
Page 290 of 376
290 Practical hintsLocking/unlocking in an emergency
Locking/unlocking in an emergencyUnlocking the vehicle
Unlocking the driver’s door
If you are unable to unlock the driver’s
door using the key, open the door using
the mechanical key.
1Mechanical key locking tab
2Mechanical key
Move locking tab 1 direction of arrow
and slide the mechanical key out of the
housing.
3Unlocking
4Locking
Unlock the door with the mechanical
key. To do so, push the mechanical key
in the lock until it stops and turn it to
the left.
iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft
alarm system. To cancel the alarm, do
one of the following:
Press button
Œ
or
‹
on the
key.
Insert the key in the starter switch.
Press the KEYLESS-GO* start/stop
button (
page 30).
Page 291 of 376

291 Practical hints
Locking/unlocking in an emergency
Unlocking the trunk
If you are unable to unlock the trunk with
the key, open the trunk with the mechani-
cal key as follows:Trunk lid lock1Unlocking
Insert the mechanical key into the
trunk lid lock.
Perform the following two steps simul-
taneously:
Turn the key counterclockwise to
position 1.
Pull the trunk lid handle and lift lid.Unlocking interior storage compart-
ments
Locking storage areas in the passenger
compartment include:
the glove box
the storage space under the armrest
the rear storage compartments
If these cannot be unlocked by means of
the key, the KEYLESS-GO* card or the cen-
tral locking button, use the mechanical key
to open the glove box.1Separately unlock storage compart-
ments
2Centrally lock/unlock storage com-
partments
3Separately lock storage compartments
Slide mechanical key out of key hous-
ing (
page 290).
Insert the mechanical key into the
glove box lock and turn it to position 2.
All storage compartments are now un-
locked.
iThe storage space under the armrest
and the rear storage compartments
can only be unlocked using the me-
chanical key at the glove box lock.
Page 292 of 376

292 Practical hintsLocking/unlocking in an emergencyLocking the vehicle
If you are unable to lock the vehicle with
the electronic key, lock it with the mechan-
ical key as follows:
Close the passenger door and the
trunk.
Press the central locking switch in the
cockpit (
page 91).
Check to see whether the locking knob
on the passenger door is still visible. If
necessary push it down manually.
Lock the driver’s door with the me-
chanical key.
Lock the trunk if necessary with the
mechanical key (
page 83).Lowering the Easy Pack feature
manually
If the Easy Pack feature does not fully low-
er the retractable hardtop into the trunk
compartment and you are unable to close
the trunk lid, follow the instructions below.
1Hex-socket wrench
2Locking screw
Remove the trunk floor from the trunk.
Lift up the lid located at the lower left
side of the trunk.
Have a second person lift and hold the
retracted hardtop.
Using the hex-socket wrench provided
in the vehicle tool kit, carefully turn the
locking screw 2 approximately one
quarter turn.
Hook luggage cover into holders
(page 160).
Let go of the hardtop.
It should gradually lower into the trunk.
When top is completely lowered, return
locking screw 2 to its original position.
Close the lid.
Replace the trunk floor.
Visit an authorized Mercedes-Benz
Center as soon as possible.!Do not overtighten the screw.
Page 293 of 376

293 Practical hints
Locking/unlocking in an emergency
Changing batteries
If the batteries in the key or the KEY-
LESS-GO* card are discharged, the vehicle
can no longer be locked or unlocked. It is
recommended to have the batteries re-
placed at an authorized Mercedes-Benz
Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.Key
1Mechanical key
2Unlatching battery compartment
3Pulling out battery compartment
4Mechanical key locking tab
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key1
(page 290).
Insert the mechanical key in side open-
ing and push gray slide in direction of
arrow2.
The battery compartment is unlatched.
Pull the battery compartment out of the
key housing in direction of arrow3.
Remove the batteries.
5Battery
6Contact spring
Using a lint-free cloth, insert new bat-
teries under the contact spring with the
plus (+) side facing up.
Return battery compartment into hous-
ing until locked in place.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen changing batteries, always re-
place both batteries. The required re-
placement batteries are available at
any Mercedes-Benz Center.
Page 298 of 376

298 Practical hintsReplacing bulbsReplacing bulbs for front lamps
1Bulb socket for turn signal lamp
2Low beam lamp cover (Xenon or
Bi-Xenon* lamp). Do not remove.
3High beam lamp coverReplacing front turn signal bulb
Switch off the lights.
Open the hood (
page 227).
Twist bulb socket 1 counterclockwise
and pull out.
Push bulb into socket, turn counter-
clockwise and remove.
Insert new bulb in socket, push and
twist clockwise.
Reinsert bulb socket in lamp and twist
clockwise.Replacing high beam bulbs
1High beam bulbs
2Locking mechanism
3Parking and standing lamps
Switch off the lights.
Open the hood (
page 227).
Press ends of headlamp cover tab to-
gether and remove cover.
Pull electrical connector off.
Turn the locking mechanism 2 counter-
clockwise and take out the bulb.
Insert the new bulb so that the base lo-
cates in the recess on the holder.
Warning!
G
Do not remove the cover for the Xenon or
Bi-Xenon*headlamp. Because of high volt-
age in Xenon and Bi-Xenon* lamps, it is dan-
gerous to replace the bulb or repair the lamp
and its components. We recommend that
you have such work done by a qualified
technician.