Page 317 of 434
316 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
C
Raise
roll-over bar
The roll bar is malfunctioning.
Raise the roll bar using the roll bar button
(page 69).
Have the roll bar checked by an authorized
Mercedes-Benz Center.
<
Seat belt system
Drive to
workshop!
The seat belt system is malfunction-
ing.
Visit an authorized Mercedes-Benz Center as
soon as possible.
L
Tele Aid
Drive to
workshop!
One or more main functions of the
Tele Aid system are malfunctioning.
Have the Tele Aid system checked by an au-
thorized Mercedes-Benz Center.
Tele Aid battery
Drive to
workshop!
The emergency power battery for
the Tele Aid system is malfunction-
ing. If the vehicle battery is also dis-
charged, Tele Aid will not be
operational.
Have the Tele Aid system checked by an au-
thorized Mercedes-Benz Center.
Page 318 of 434

317 Practical hints
What to do if …
Left display
Right display
Possible cause
Possible solution
ì
Function
Unavailable!
This display appears if button ì
or í on the multifunction steer-
ing wheel is pressed and the vehicle
is not equipped with a telephone.
H
Tire pressure
Caution
tire defect!
The tire pressure in one or more
tires is dropping.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Change the wheel (
page 350).
Tire pressure
ChecK
tires!
The tire pressure in one or more
tires is already below the minimum
value.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Change the wheel (
page 350).
H
Tire pressure
ChecK
tires!
The tire pressure in one or more
tires is low.
Check and correct tire pressure as required
(page 264).
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 319 of 434
318 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
H
Tire pres.
monitor
Visit
workshop!
The tire inflation pressure monitor*
is malfunctioning.
Have the tire inflation pressure monitor*
checked by an authorized Mercedes-Benz
Center.
Change the wheel.
A wheel without proper sensor was
installed.
H
Tire pressure, RL
Caution
tire defect!
The left rear tire is rapidly deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Change the wheel (
page 350).
Tire pressure, RL
Check tires!
The left rear tire pressure is low.
Carefully bring the vehicle to a halt.
Check the tire pressure.
Change the wheel (
page 350).
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 320 of 434
319 Practical hints
What to do if …
Left display
Right display
Possible cause
Possible solution
H
Tire pressure, RR
Caution
tire defect!
The right rear tire is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Change the wheel (
page 350).
Tire pressure, RR
Check tires!
The right rear tire pressure is low.
Carefully bring the vehicle to a halt.
Check the tire pressure.
Change the wheel (
page 350).
Tire pressure, FL
Caution
tire defect!
The left front tire is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Change the wheel (
page 350).
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 321 of 434
320 Practical hintsWhat 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 350).
Tire pressure, FR
Caution
tire defect!
The right front tire is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Change the wheel (
page 350).
Tire pressure, FR
Check tires!
The right front tire pressure is low.
Carefully bring the vehicle to a halt.
Change the wheel (
page 350).
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 322 of 434

321 Practical hints
What to do if …
Left display
Right display
Possible cause
Possible solution
H
Reactivate
tire press. monit
.
The tire inflation pressure monitor*
is deactivated.
Activate the tire inflation pressure monitor*
(page 266).
Tire press.
monitor
currently
inactive
The tire inflation pressure monitor*
is temporarily unable to monitor the
tire pressure due to:
the presence of several wheel
sensors in the vehicle
excessive wheel sensor temper-
atures
a nearby radio interference
source
unrecognized wheel sensors
mounted
Remove any additional wheel sensors from
the vehicle, e.g. when transporting a new set
of tires.
As soon as the causes of the malfunction have
been removed, the tire pressure monitor auto-
matically becomes active again.
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 323 of 434
322 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
Ê
Close
trunk lid!
This message will appear whenever
the trunk lid is open.
Close the trunk lid.
M
Close
trunk partition!
You are trying to open or close the
retractable hardtop even though
the luggage cover in the trunk is not
pulled out.
Pull out the luggage cover and secure it
(page 185).
W
Washer fluid
Check level!
The fluid level has dropped to about 1/3 of total reservoir capacity.
Add washer fluid (
page 261).
Warning!
G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may ignite when if it comes into contact with
hot engine parts. You could be seriously
burned.
Page 326 of 434
325 Practical hints
Locking/unlocking in an emergency
Locking/unlocking in an emergency
Unlocking the vehicle
If you are unable to unlock the driver’s
door using the SmartKey, 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 2 out of
the housing.Unlocking the driver’s door
1Unlocking
2Locking
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
SmartKey.
Insert the SmartKey in the starter
switch.
Press the KEYLESS-GO* start/stop
button (
page 33).
Grasp the outside door handle (ve-
hicles with KEYLESS-GO* only).