Page 253 of 354

250 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Malfunction and warning messages in the
multifunction display
Malfunction and warning messages for the following
systems will be displayed immediately in the
multifunction display.
These messages can be cleared from the instrument
cluster by:
•using theJbutton on the instrument cluster, or
•pressing button j, k, è or ÿ on the
multifunction steering wheel.
They are then stored in the malfunction message
memory. See page 108. Notes:
Certain malfunction and warning messages are
accompanied by an audible signal.
Malfunction and warning messages in red are always
accompanied by an audible signal.
Temporary messages such as “SWITCH OFF LIGHTS”
will not be stored in the malfunction message memory.
Wa r n i n g !
All messages contain important information which
should be taken note of and, where malfunction
indicated, addressed as soon as possible at an
authorized Mercedes-Benz Center.Failure to repair condition noted may cause
damage not covered by the Mercedes-Benz Limited
Warranty, or result in property damage or personal
injury.
Page 262 of 354
259 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index LIGHT SENSOR
With the electronic key removed and the driver’s door
open, a warning sounds and the message “SWITCH OFF
LIGHTS!” appears in the multifunction indicator if the
vehicle’s exterior lamps (except standing lamps) are not
switched off.REMOVE KEY
This message plus an audible alarm indicate that the
electronic key is in steering lock position 0 or 1, and the
driver’s door is open.
Line 1 Line 2
SWITCH OFF LIGHTS!
Line 1 Line 2
REMOVE KEY!
P54.30-3573-21
Page 263 of 354
260 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
STEERING GEAR OIL
System without or with insufficient steering gear oil
level. Danger of damage to steering gear exists.
When this message appears, the steering gear oil level
has dropped below the required level. Have the system
checked at the nearest Mercedes-Benz Center as soon as
possible.
Line 1 Line 2
STEERING GEAR OIL VISIT WORKSHOP!
Wa r n i n g !
If the level of steering gear oil in reservoir is too
low, the steering power assistance could fail. Much
greater effort will then be needed to turn the
steering wheel.Do not add steering oil without checking the
steering system.Do not drive the vehicle. Have the system checked
at your authorized Mercedes-Benz Center as soon
as possible.
Page 292 of 354

289 Battery
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Battery
Important!
Battery replacement information:
The maintenance-free battery is located under the rear
seat cushion. To minimize the chance for acid leakage
which could cause severe burns during a crash or
rollover, a special acid leakage resistant battery was
factory installed. A replacement battery for the vehicle must not leak acid when upside down for at least
15 minutes. Your authorized Mercedes-Benz Center can
provide such a special battery.
The service life of the battery is dependent on its
condition of charge. The battery should always be kept
sufficiently charged, in order to last an optimum length
of time.
Therefore, we strongly recommend that you have the
battery charge checked frequently, and corrected if
necessary, especially if you use the vehicle less than
approximately 200 miles (300 km) per month,
mostly for short distance trips, or if it is not used for
long periods of time.
Only charge a battery with a battery charger after the
battery has been disconnected from the vehicle’s
electrical circuit.
Always disconnect the battery negative lead first and
connect last.
When removing and connecting the battery, always
make sure that all electrical consumers are off and the
electronic key is in steering lock position 0. The battery,
its filler caps, the vent tube and the opposite plug must
always be securely installed when the vehicle in
operation.
Wa r n i n g !
Failure to follow these instructions can result in
severe injury or death.Never lean over batteries while connecting, you
might get injured.Battery fluid contains sulfuric acid. Do not allow
this fluid to come in contact with eyes, skin or
clothing. In case it does, immediately flush affected
area with water and seek medical help if necessary.A battery will also produce hydrogen gas, which is
flammable and explosive. Keep flames or sparks
away from battery, avoid improper connection of
jumper cables, smoking etc..
Page 293 of 354

290 Battery
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
During removal and installation always protect the
disconnected battery positive (+) terminal with the
cover attached to the battery.
While the engine is running the battery terminal clamps
must not be loosened or detached, otherwise the
generator and other electronic components would be
damaged.
Note:
The selector lever will remain locked in position “P” and
the electronic key cannot be turned in the steering lock,
if the vehicle battery is disconnected or discharged.
After reconnecting the battery also resynchronize the
front seat head restraints, the express feature of the
power windows, and the electronic stability program
(ESP), see page 44, 156 and 231.Battery recycling
Batteries contain material that can harm the
environment with improper disposal.
Large 12 Volt storage batteries contain lead.
Recycling of batteries is the preferred method of
disposal.
Many states require sellers of batteries to accept old
batteries for recycling.
Page 297 of 354

294 Towing the vehicle
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Towing the vehicleImportant!
When towing the vehicle, please, note the following:
With the automatic central locking activated and the
electronic key in steering lock position 2, the vehicle
doors lock if the left front wheel as well as the right rear
wheel are turning at vehicle speeds of approximately
9 mph (15 km / h) or more.
To prevent the vehicle door locks from locking,
deactivate the automatic central locking.
The rear towing eye is located at the right, below the
bumper.
Wa r n i n g
Prior to towing the vehicle with all wheels on the
ground, make certain that the electronic key is in
steering lock position 2.If the electronic key is left in the steering lock
position 0 for an extended period of time, it can no
longer be turned in the lock. In this case, the
steering is locked. To unlock, remove electronic key
from steering lock and reinsert.
Page 298 of 354

295 Towing the vehicle
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index 1Cover on right side of front bumper
To remove cover:
Press mark on cover in direction of arrow and lift cover
off to reveal threaded hole for towing eye bolt. The
towing eye bolt is supplied with the vehicle tools. Screw
towing eye bolt in to its stop and tighten with lug
wrench.
To reinstall cover:
Engage cover (1) at bottom and press in top securely.We recommend that the vehicle be transported using
flat bed equipment. This method is preferable to other
types of towing.
The vehicle may be towed with all wheels on the ground
and the selector lever in position “N” for distances up to
30 miles (50 km) and at a speed not to exceed 30 mph
(50 km / h). The electronic key must be in steering lock
position 2.
To be certain to avoid a possibility of damage to the
transmission, however, we recommend the drive shaft
be disconnected at the rear axle drive flange for any
towing beyond a short tow to a nearby garage.
Do not tow with sling-type equipment. Towing with
sling-type equipment over bumpy roads will damage
radiator and supports.
Use wheel lift, dolly, or flat bed equipment, with
electronic key in steering lock turned to position 0.
Wa r n i n g !
With the engine not running, there is no power
assistance for the braking and steering systems. In
this case, it is important to keep in mind that a
considerably higher degree of effort is necessary to
brake and steer the vehicle.
Page 299 of 354

296 Towing the vehicle
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Note:
To signal turns while being towed with hazard warning
flasher in use, turn electronic key in steering lock to
position 2 and activate combination switch for left or
right turn signal in usual manner – only the selected
turn signal will operate.
Upon canceling the turn signal, the hazard warning
flasher will operate again.
Caution!
The vehicle must be towed with all 4 wheels off the
ground. If the vehicle is towed with the front axle raised,
the engine must be shut off (electronic key in steering
lock position 0 or 1). Otherwise, the ESP will
immediately be engaged and will apply the rear wheel
brakes. With the front wheels raised, the maximum
speed and towing distance are 30 mph and 30 miles.
Switch off the tow-away alarm, see page 41, and the
automatic center locking on page 35.Transmission selector lever, manually unlocking
In the case of power failure the transmission selector
lever can be manually unlocked, e.g. to tow the vehicle.
To do so, insert a pin (1), e.g. ball point pen, into the
covered opening below the position “D” of the shift
pattern. While pushing the pin down, move selector
lever from position “P”.
After removal of the pin from the opening, the cover will
not close fully. Only after moving the selector lever to
positions “D+” and “D–” does the cover return to its
closed position.