Page 976 of 4133
172 Controls in detailUseful featuresThe Tele Aid system
(Telematic Alarm Identification on
Demand)
The Tele Aid system consists of three
types of response:
automatic and manual emergency
roadside assistance and
information.
The Tele Aid system is operational provid-
ing that the vehicle’s battery is charged,
properly connected, not damaged and cel-
lular and GPS coverage is available.
The speaker volume of a Tele Aid call can
be adjusted using the volume control on
the MCS unit.
To activate, press the SOS button, the
Roadside Assistance button• or
the Information button¡, depend-
ing on the type of response required.Shortly after the completion of your ac-
quaintance call, you will receive a user ID
and password via first call mail. By visiting
www.mbusa.com and selecting “Tele Aid”
(USA only), you will have access to account
information, remote door unlock, profile
and more.System self-check
Initially, after turning the key in the steer-
ing lock to position2, malfunctions are de-
tected and indicated (the indicator lamps
in the SOS button, the Roadside Assis-
tance button• and the Information
button¡ stay on longer than
10 seconds or do not come on). The mes-
sage
TELE AID - VISIT WORKSHOP
ap-
pears for approx. 10 seconds in the MCS
display.
iThe SOS button, the Roadside Assis-
tance button• and the Information
button¡ are located in the over-
head control panel.!The Tele Aid system utilizes the cellular
network for communication and the
GPS (G
lobal P
ositioning S
ystem) satel-
lites for vehicle location. If either of
these signals are unavailable, the Tele
Aid system may not function and if this
occurs, assistance must be summoned
by other means.
Page 1037 of 4133
233 Operation
Maintenance
Service term exceeded
If you have exceeded the suggested ser-
vice term:
the9 or ½symbol appears in
the display2 for 30 seconds and a
signal sounds after switching on the
ignition.
it is preceded by a “–” (minus symbol).
The Mercedes-Benz Light Truck Center will
reset the service indicator following a com-
pleted service.
Calling up the service indicator
Within one second press knob1
twice.
The FSS display will appear for
ten seconds.
Resetting the service indicator
In the event that the service on your vehi-
cle is not carried out by an authorized
Mercedes-Benz Light Truck Center, you
can reset the service indicator yourself.
Switch ignition on and immediately
press knob1 twice within
one second.
The present status for days or distance
is displayed.
Within ten seconds turn the key in
steering lock to position0 (
page 33).
Press and hold knob1 while switch-
ing the ignition on.
The present status for days or distance
is displayed once more.
Continue to hold knob1.
After approximately ten seconds a sig-
nal sounds, and the display shows
10 000 miles (Canada: 15 000 km) for
approximately ten seconds.
Release knob1.
iIf the service indicator was inadvertent-
ly reset, have a Mercedes-Benz Light
Truck Center correct it.
Only reset if the proper service has
been performed. Resetting the system
without performing the proper service
as called for by the FSS will cause the
FSS to incorrectly determine the next
service interval which will result in en-
gine damage not covered by the
Mercedes-Benz Limited Warranty.
If the battery is disconnected, the days
of disconnection will not be included in
the count shown by the service indica-
tor. To arrive at the true service dead-
line, you will need to subtract these
days from the days shown in the ser-
vice indicator.
Do not confuse the service indicator
with the engine oil level indicator:.
Page 1046 of 4133
242 Practical hintsWhat to do if …
What to do if …Lamps in instrument clusterGeneral information:
If a bulb in the instrument cluster fails to
light up during the bulb self-check when turning the key in steering lock to
position2, have it checked and replaced if
necessary.Problem
Possible cause
Suggested solution
-
The yellow ABS warning lamp
comes on while driving.
ABS has detected a malfunction and has
switched off. The BAS, ESP, 4-ETS and EBP
are also switched off.
The brake system is still functioning normally
but without ABS available.
Continue driving with added caution.
Wheels may lock during hard braking
reducing steering capability.
Have the system checked at an autho-
rized Mercedes-Benz Light Truck Cen-
ter as soon as possible.
Failure to follow these instructions in-
creases the risk of an accident.
The charging voltage has fallen below
10 volts. The ABS has switched off.
When the voltage is above this value
again, the ABS is operational again.
If necessary, have the generator
(alternator) and the battery checked.
Page 1066 of 4133
262 Practical hintsUnlocking / locking in an emergencyLocking the vehicle
If you are unable to lock the vehicle with
the remote control, lock it with the me-
chanical key as follows:
Close the passenger doors and the lift-
gate.
Press the upper part of the central
locking button in the cockpit
(page 93).
Check to see whether the locking
knobs on the passenger doors are still
visible. If necessary push them down
manually.
Lock the liftgate if necessary from in-
side (
page 91).
Lock the driver’s door with the me-
chanical key.Changing batteries in the remote
control
If the batteries in the remote control are
discharged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Light Truck 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.1Release button
2Battery cover
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Unfold the key by pressing release
button1.
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 replacement batteries are
available at any Mercedes-Benz Light
Truck Center.
Page 1067 of 4133
263 Practical hints
Unlocking / locking in an emergency
Pull off battery cover2 in direction of
arrow.
Remove the batteries.
Using a lint-free cloth, insert new bat-
teries under the contact spring with the
plus (+) side facing up.
Press battery cover2 onto housing
until locked in place.
Push each button to assure proper op-
eration of the remote control.
If remote control does not function cor-
rectly after replacing the batteries, the
system may have to be resynchronized.Synchronizing remote control
Turn key in steering lock to position2
(page 33), then to position0 and re-
move.
Within ten seconds, push and hold
button‹ while pushing
buttonΠfive times.
Release the button, and press‹,
Œ orŠ once.
The remote control is resynchronized.
Recheck all of the remote control func-
tions.
Fuel filler flap
1Cover
2Lock rod
Open the tailgate.
Open cover1 in cargo area behind
the left trim panel.
Turn lock rod2 clockwise (arrow) to
the end stop.
The fuel filler flap can now be opened.
iI f i t i s n o t p o s s i b l e t o r e s y n c h r o n i z e t h e
remote control, have the system
checked at your authorized
Mercedes-Benz Light Truck Center.
Page 1082 of 4133
278 Practical hintsBattery
BatteryThe battery is located on the passenger
side of the engine compartment.
1Negative terminal
2Positive terminal
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 223).
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.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the key is in the steering lock. Other-
wise the alternator and other electronic
components could be severely dam-
aged.
Have the battery checked regularly by
an authorized Mercedes-Benz Light
Truck Center.
Refer to Service Booklet for mainte-
nance intervals or contact your autho-
rized Mercedes-Benz Light Truck
Center for further information.Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.
Page 1083 of 4133
279 Practical hints
Battery
Disconnecting the battery
Depress parking brake firmly or move
gear selector lever to positionP.
Turn off all electrical consumers.
Remove key from the steering lock.
Open the hood (
page 217).
Disconnect the battery negative lead.
Remove the cover from the positive ter-
minal.
Disconnect the battery positive lead.
Removing the batteries
Remove the screw securing the bat-
tery.
Remove the battery support and brack-
et. Take out the battery.
Charging and reinstalling batteries
Charge battery in accordance with the
instructions of the battery charger
manufacturer.
Reinstall the charged battery. Follow
the previously described steps in re-
verse order.
Reconnecting the batteries
Turn off all electrical consumers.
Connect the positive lead and fasten its
cover.
Connect the negative lead.
Warning!
G
With a disconnected battery
you will no longer be able to turn the key
in the steering lock
the gear selector lever will remain
locked in positionP
Warning!
G
Never charge a battery while still installed in
the vehicle. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
!Never invert the terminal connections!!The battery, its filler caps and the vent
tube must always be securely installed
when the vehicle is in operation.
Page 1089 of 4133
285 Practical hints
Towing the vehicle
Front towing eye
The front towing eye is located on the pas-
senger side below the bumper.
1Towing eyeRear towing eye The rear towing eye is located behind the
right side cover in the bumper panel.
ML 350, ML 5001Cover
2Towing eye
To remove cover:
Pry out the cover1 using a flat blade
screwdriver (
page 257).
To reinstall cover:
Engage cover at bottom and press in
top securely.
iThe gear selector lever will remain
locked in positionP and the key will not
turn in the steering lock if the battery is
disconnected or discharged. See notes
on the battery (
page 278) or on jump
starting (
page 281).
Manual unlocking transmission gear
selector lever (
page 264).
Warning!
G
In order to avoid possible serious burns or
injury, use extreme caution when removing
the cover, because the rear exhaust pipe is
extremely hot.
