2005 MERCEDES-BENZ ML350 catalytic converter

Contents
Automatic climate control ................. 136
Automatic mode........................... 139
Adjusting air volume and
air distribution manually............... 139
Defrosting .................................... 140
Air recirculation mode.................. 140
Air conditioning ............................ 141
Residual heat and ventilation ....... 142
Rear passenger compartment
ventilation and rear
automatic climate control ............ 143
Front and rear air vents................ 144
Power windows.................................. 146
Opening and closing
the side windows ......................... 146
Synchronizing power windows ..... 148
Rear quarter windows* ................ 148
Power tilt / sliding sunroof* ............... 150
Opening and closing the
power tilt / sliding sunroof............ 150
Synchronizing the
power tilt / sliding sunroof............ 152Driving systems .................................. 153
Cruise control ............................... 153
Parktronic* system
(Parking assist) ............................. 156
Loading............................................... 160
Loading instructions ..................... 160
Partition net* ................................ 162
Cargo compartment cover blind* . 164
Cargo floor plates ......................... 165
Roof rack* .................................... 166
Useful features ................................... 167
Storage compartments ................. 167
Cup holders .................................. 169
Armrest in rear seat bench ........... 170
Ashtrays and cigarette lighter ....... 171
Electrical outlet ............................. 173
Telephone* ................................... 173
Tele Aid* ....................................... 174
Garage door opener ...................... 183
Trip computer* ............................. 189
Operation.......................................... 195
The first 1000 miles (1500 km) .......... 196
Driving instructions ............................ 197
Drive sensibly – save fuel ............. 197
Drinking and driving...................... 197
Pedals ........................................... 197
Power assistance .......................... 197
Brakes .......................................... 198
Driving off ..................................... 199
Parking ......................................... 200
Tires.............................................. 200
Hydroplaning ................................ 201
Tire traction .................................. 201
Tire speed rating ........................... 202
Winter driving instructions ............ 202
Standing water ............................. 204
Off-road driving ............................. 204
Trailer towing ................................ 211
Passenger compartment............... 215
Driving abroad .............................. 216
Control and operation
of radio transmitters ..................... 216
Catalytic converter ....................... 217
Emission control ........................... 217
Coolant temperature .................... 218

49 Getting started
Driving
After a cold start, the automatic transmis-
sion shifts at a higher engine revolution.
This allows the catalytic converter to reach
its operating temperature earlier.
For more information, see “Driving instruc-
tions” (
page 197).
For information on off-road driving, see
“Off-road driving” (
page 204).
!If you hear a warning signal when driv-
ing off, you have forgotten to release
the parking brake.
Release the parking brake.Warning!
G
It is dangerous to shift the gear selector
lever out ofP orN if the engine speed is
higher than idle speed. If your foot is not
firmly on the brake pedal, the vehicle could
accelerate quickly forward or in reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and when
your right foot is firmly on the brake pedal.
Warning!
G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced vehi-
cle control. Your vehicle’s ABS will not pre-
vent this type of loss of control.!Place the gear selector lever in
positionR only when the vehicle is
stopped in order to avoid damaging the
transmission.
!Do not run cold engine at high engine
speeds. Running a cold engine at high
engine speeds may shorten the service
life of the engine.!Simultaneously depressing the acceler-
ator pedal and applying the brake re-
duces engine performance and causes
premature brake and drivetrain wear.

53 Getting started
Driving
Problems while driving
The engine runs erratically and misfires

An ignition cable may be damaged.


The engine electronics may not be
operating properly.


Unburned gasoline may have entered
the catalytic converter and damaged it.

Give very little gas.

Have the problem repaired by an au-
thorized Mercedes-Benz Light Truck
Center as soon as possible.The coolant temperature is above
248°F (120°C)
The coolant is too hot and is no longer
cooling the engine.

Stop the vehicle as soon as possible
and turn off the engine. Allow engine
and coolant to cool.

Check the coolant level and add cool-
ant if necessary (
page 227).In case of accident
If the vehicle is leaking gasoline:

Do not start the engine under any cir-
cumstances.

Notify local fire and / or police authori-
ties.
If the extent of the damage cannot be de-
termined:

Notify an authorized Mercedes-Benz
Light Truck Center.
If no damage can be determined on the


major assemblies


fuel system


engine mount:

Start the engine in the usual manner.

120 Controls in detailAutomatic transmissionFor information on driving with an auto-
matic transmission, see the “Getting
started” section (
page 47).
Your vehicle’s transmission adapts its gear
shifting process to your individual driving
style by continually adjusting the shift
points up or down. These shift point adjust-
ments are performed based on current
operating and driving conditions.
If the operating conditions change, the
automatic transmission reacts by
adjusting its gear shift program.The automatic transmission selects indi-
vidual gears automatically, depending on:


the gear selector lever positionD with
gear ranges4, 3, 2, 1 (
page 122)


the position of the accelerator pedal
(page 124)


the vehicle speed
The current gear selector lever position
appears in the tachometer display
(
page 24).
When the gear selector lever is in
positionD, you can influence transmission
shifting by


limiting the gear range


changing gears manually
iDuring the brief warm-up, transmission
upshifting is delayed. This allows the
catalytic converter to heat up more
quickly to operating temperature.
Warning!
G
It is dangerous to shift the gear selector
lever out ofP orN if the engine speed is
higher than idle speed. If your foot is not
firmly on the brake pedal, the vehicle could
accelerate quickly forward or reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and when
your right foot is firmly on the brake pedal.

217 Operation
Driving instructions
Catalytic converter
Your Mercedes-Benz is equipped with
monolithic-type catalytic converters, an
important element in conjunction with the
oxygen sensors to achieve substantial con-
trol of the pollutants in the exhaust emis-
sions. Keep your vehicle in proper
operating condition by following our rec-
ommended maintenance instructions as
outlined in your Maintenance Booklet.
Emission control
Certain engine systems serve to keep the
toxic components of the exhaust gases
within permissible legal limits.
These systems, of course, will function
properly only when maintained strictly ac-
cording to factory specifications. Any ad-
justments on the engine should, therefore,
be carried out only by qualified
Mercedes-Benz Light Truck Center autho-
rized technicians. Engine adjustments
should not be altered in any way. More-
over, the specified service jobs must be
carried out regularly according to Mercedes-Benz servicing requirements.
For details refer to the Maintenance Book-
let.
!To prevent damage to the catalytic con-
verters, use only premium unleaded
gasoline in this vehicle.
Any noticeable irregularities in engine
operation should be repaired promptly.
Otherwise, excessive unburned fuel
may reach the catalytic converter,
causing it to overheat and start a fire.
Warning!
G
As with any vehicle, do not idle, park or op-
erate this vehicle in areas where combusti-
ble materials such as grass, hay or leaves
can come into contact with the hot exhaust
system, as these materials could be ignited
and cause a vehicle fire.
Warning!
G
Inhalation of exhaust gas is hazardous to
your health. All exhaust gas contains carbon
monoxide, and inhaling it can cause uncon-
sciousness and lead to death.
Do not run the engine in confined areas
(such as a garage) which are not properly
ventilated. If you think that exhaust gas
fumes are entering the vehicle while driving,
have the cause determined and corrected
immediately. If you must drive under these
conditions, drive only with at least one win-
dow fully open at all times.

224 OperationEngine compartmentChecking engine oil level via display
When checking the oil level the vehicle
must

be parked on level ground


be at normal operating temperature


have been stationary for at least five
minutes with the engine turned off
To check the engine oil level via the display
in the speedometer, do the following:

Turn the key in the steering lock to
position2.
1Button
2Display in speedometer

Wait until the display
------
appears in
the speedometer display2.

Within one second press button1
twice.
One of the following messages will
subsequently appear in the display:

OIL i.OThe oil level is correct. Engine oil
does not to be added.


–1.0L
Add 1.0 liter of engine oil.


–1.5L
Add 1.5 liters of engine oil.


–2.0L
Add 2.0 liters of engine oil.
For adding engine oil see (
page 314).
For more information on engine oil, see the
“Technical data” section (
page 312) and
(
page 314).Other display messages
If there is excess engine oil with the engine
at normal operating temperature, the
following message will appear in the
display:
OIL HIThe oil level is too high.
Have excess oil siphoned.!Excess oil must be siphoned or drained
off. It could cause damage to the
engine and catalytic converter not
covered by the Mercedes-Benz Limited
Warranty.

227 Operation
Engine compartment

Screw filler cap2 back on filler neck.
For more information on engine oil, see the
“Technical data” section (
page 312) and
(
page 314).
Transmission fluid level
The transmission fluid level does not need
to be checked. If you notice transmission
fluid loss or gear shifting malfunctions,
have an authorized Mercedes-Benz Light
Truck Center check the automatic trans-
mission.Coolant level
The engine coolant is a mixture of water
and anticorrosion / antifreeze. To check
the coolant level, the vehicle must be
parked on level ground and the engine
must be cool.
!Excess oil must be siphoned or drained
off. It could cause damage to the
engine and catalytic converter not
covered by the Mercedes-Benz Limited
Warranty.
Warning!
G
In order to avoid any possibly serious burns:

Use extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system,
or if the coolant temperature gauge indi-
cates that the coolant is overheated.


Do not remove pressure cap on coolant
reservoir if coolant temperature is
above 158°F (70°C). Allow engine to
cool down before removing cap. The
coolant reservoir contains hot fluid and
is under pressure.


Using a rag, slowly open the cap approx-
imately
1/2 turn to relieve excess pres-
sure. If opened immediately, scalding
hot fluid and steam will be blown out un-
der pressure.


Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene gly-
col which may burn if it comes into con-
tact with hot engine parts.

291 Practical hints
Jump starting
Jump starting
If the battery is discharged, the engine can
be started with jumper cables and the
battery of another vehicle. Observe the
following:

Jump starting should only be performed
when the engine and catalytic convert-
er are cold.


Do not start the engine if the battery is
frozen. Let the battery thaw out first.


Only jump start from batteries with the
same voltage rating (12 V). Jump start-
ing with a more powerful battery could
damage the vehicle’s electrical system,
which will not be covered by the
Mercedes-Benz Limited Warranty.


Only use jumper cables with sufficient
cross-section and insulated terminal
clamps.


Always make sure the jumper cables
are not on or near pulleys, fans, or oth-
er parts that move when the engine is
started or running.
Warning!
G
Failure to follow these directions will cause
damage to the electronic components, and
can lead to a battery explosion and severe
injury or death.
Never lean over batteries while connecting
or jump starting, 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 very explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
Attempting to jump start a frozen battery
can result in it exploding, causing personal
injury.
Read all instructions before proceeding.
!Avoid repeated and lengthy starting at-
tempts.
Do not attempt to start the engine
using a battery quick charge unit.
If engine does not run after several
unsuccessful starting attempts, have it
checked at the nearest authorized
Mercedes-Benz Light Truck Center.
Excessive unburned fuel generated by
repeated failed starting attempts may
damage the catalytic converter and
may present a fire risk.
Make sure the jumper cables do not
have loose or missing insulation.
Make sure the cable clamps do not
touch any other metal part while the
other end is still attached to a battery.