2002 MERCEDES-BENZ ML320 Key

247 Malfunction and indicator lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Low windshield and headlamp washer system fluid
level warning lamp
With the key in steering lock position 2, the
warning lamp comes on. It should go out
when the engine is running.
If the warning lamp does not go out after starting the
engine, or if it comes on while driving, there is approx.
1.3 US qt (1,25 l) washer fluid remaining the reservoir.
The reservoir should be refilled with MB Windshield
Washer Concentrate “S” and water (or commercially
available premixed windshield washer solvent /
antifreeze, depending on ambient temperature, see
page 258) at the next opportunity. The reservoir for the
windshield and headlamp washer systems is located in
the engine compartment.
Note:
If the warning lamp comes on during subzero wether,
please check the concentration of the washer fluid in
the tank. If the concentration is not sufficient, the fluid
may have frozen. After the fluid in the tank thaws,
correct the concentration level. Brake pad wear indicator lamp
With the key in steering lock position 2, the
indicator lamp comes on and goes out when
the engine is running.
If the indicator lamp lights up during braking, this
indicates that the brake pads are worn down.
Have the brake system checked at your authorized
Mercedes-Benz Light Truck Center as soon as possible.
FSS indicator
FSS indicator (Service A), see page 94.
FSS indicator (Service B), see page 94.
The symbols appear in the main odometer display field
prior to the next suggested service. Depending on
operating conditions throughout the year, the next
service is calculated and displayed in days or distance
remaining. See page 94 for notes on the flexible service
system (FSS).

268 Tires, Wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Move vehicle to a level area which is a safe distance
from the roadway.
Important!
The vehicle doors lock if the left front wheel rotates with
the engine running. Do not leave the engine running
while changing a wheel.
1. Set parking brake and turn on hazard warning
flasher.
2. Move selector lever to position “P”, turn off the
engine, and remove key from the steering lock. Lock
steering wheel with wheels in the straight ahead
position.
3. Prevent vehicle from rolling away by blocking
wheels with wheel chocks (not supplied with
vehicle) or sizable wood block or stone. When
changing a wheel on a hill, place chocks on the
downhill side blocking both wheels of the other
axle. On a level road, place one chock in front of and
one behind the wheel that is diagonally opposite to
the wheel being changed.4. Using the wrench, loosen but do not yet remove the
wheel bolts.
5. Open jack enough to fit under vehicle.
The jack take-up brackets are located directly
behind the front wheel housings and in front of the
rear wheel housings.
P40.10-2444-26

274 Battery
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
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
key is in steering lock position 0. The battery must
always be securely installed when the vehicle is in
operation. 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 gear 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 set the clock in
instrument cluster (see page 87), set date in trip
computer (see page 89), resynchronize the sliding / pop-
up roof (see page 294) and the electronic stability
program (ESP) (see page 224).
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.

277 Towing
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Towing the vehicle
Important!
When towing the vehicle, please, note the following:
With the automatic central locking activated and the
engine running, the vehicle doors lock if the left front
wheel is 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, see page 33.The front towing eye is located on the passenger side
below the bumper.
1Towin g eye, fr on t
Wa r n i n g !
Prior to towing the vehicle with all wheels on the
ground, make certain that the key is in steering
lock position 2.
P88.20-2191-26

279 Towing
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index ML 55 AMG and vehicles with optional sport package.
The rear towing eye is located behind the right side
cover (1) in the bumper panel.
3Cover
4Tow i n g eye , r e a rCover removal:
Grip cover at bottom and securely pull out.
Cover installation:
Engage cover and press in 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 key must be in steering lock position 2.
Note:
The steering lock cannot be locked or unlocked and the
selector lever remains in position “P” if the battery is
disconnected or discharged (see page 273). See
page 281 for transmission selector lever, manually
unlocking.
Wa r n i n 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.

280 Towing
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
To be certain to avoid additional damage to the vehicle
powertrain, however you should do the following:
•With damage to front axle, raise front axle. Remove
flexible drive shaft between rear axle and transfer
case
•With damage to rear axle, raise rear axle and tow
vehicle with wheel lift or dolly placed under front
wheels.
•With damage to transfer case, remove flexible drive
shafts to the drive axles.
Note:
Always install new self-locking nuts when reinstalling
the flexible drive shaft.Caution!
If the vehicle is towed with the front axle raised, the
engine must be shut off (key in steering lock position 1).
Otherwise, the 4-ETS+ may become engaged which may
cause loss of towing control. Switch off the tow-away
alarm (see page 37) as well as the ESP (see page 225).
Note:
To signal turns while being towed with hazard warning
flasher in use, turn key in steering lock to position 2
and activate combination switch for left or right turn
signal in usual manner. Now deactivate the hazard
warning flasher, only the selected turn signal will
operate. Upon canceling the turn signal, the hazard
warning flasher must be activated again.
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.

292 Remote control
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Remote control battery replacement
Changing batteries
Unfold master key from holder by pressing key release
button. Pull off battery cover (1).
Change batteries, inserting new ones with (+) side
facing up.
Press battery cover onto housing until locked in place.Notes:
To assure proper operation of the remote control, push
each button. Repeat battery installation, if remote
control does not function correctly.
If the remote control does not function correctly after
repeating battery installation, the system may have to be
resynchronized, see below.

293 Remote control
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Synchronizing remote control
If the remote control does not function correctly and the
batteries are in order, the system may have to be
resynchronized.
Turn key in steering lock to position 2, then to
position 0 and remove.
Within 10 seconds, push and hold button‹ while
pushing buttonΠfive times.
Release the button, and press‹, Œ orŠ once.
Check all functions. The remote control should once
again be operational.
Note:
If it is not possible to resynchronize the remote control,
have the system checked at your authorized Mercedes-
Benz Light Truck Center.Important!
Batteries contain materials that can harm the
environment if disposed of improperly. Recycling of
batteries is the preferred method of disposal. For
disposal, please follow manufacturer’s recommendation
on battery package.
Replacement Battery:
Lithium, type CR 2025 or equivalent.