2006 MERCEDES-BENZ ML500 catalytic converter

ContentsDriving systems ................................. 238
Cruise control............................... 238
Downhill Speed Regulation
(DSR) ............................................ 243
Off-road driving program .............. 248
Air suspension package* ............. 249
Adaptive Damping System
(ADS)* .......................................... 249
Vehicle level control* ................... 250
Parktronic* system
(Parking assist) ............................. 254
Loading .............................................. 259
Loading instructions ..................... 259
,Split rear bench seat ................... 261
Partition net* ............................... 263
Cargo compartment cover*.......... 265
Cargo management system*........ 265
Roof rack* .................................... 269Useful features .................................. 270
Storage compartments ................ 270
Cup holders.................................. 274
Armrest in rear seat bench........... 275
Ashtrays* ..................................... 275
Cigarette lighter* ......................... 277
12-V sockets ................................ 277
Floormats* ................................... 279
Telephone* .................................. 279
Tele Aid* ...................................... 280
Garage door opener ..................... 289
Compass ...................................... 295
Infrared reflecting windshield* ..... 296
Operation......................................... 297
The first 1000 miles (1500 km) ......... 298
Driving instructions ........................... 299
Drive sensibly – save fuel............. 299
Drinking and driving ..................... 299
Pedals .......................................... 299
Power assistance ......................... 299
Brakes.......................................... 300
Driving off .................................... 301
Parking......................................... 301
Tires ............................................. 302
Hydroplaning................................ 303
Tire traction ................................. 303
Tire speed rating .......................... 303
Winter driving instructions ........... 304
Standing water............................. 305
Off-road driving ............................ 306
Trailer towing ............................... 314
Passenger compartment .............. 319
Driving abroad ............................. 319
Control and operation of radio
transmitters ................................. 320
Catalytic converter....................... 320
Emission control .......................... 321
Coolant temperature.................... 322

53 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 299).
For information on off-road driving, see
“Off-road driving” (
page 306).
!If you hear a warning signal and the
message
Release parking brake
appears in the multifunction display
when driving off, you have forgotten to
release the parking brake.
Release the parking brake.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.
Warning!
G
It is dangerous to shift the automatic trans-
mission 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.!Shift automatic transmission to
positionPorR 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.

58 Getting startedDriving6Symbol in multifunction display indicat-
ing that rear window wiper is activated
Switch on the ignition (
page 34).
Activating intermittent wiping

Turn switch1 to position3.
Deactivating intermittent wiping

Turn switch1 to position4.Wiping with windshield washer fluid

Turn switch1 to position2 or5.
The rear window wiper operates with
washer fluid.
Hold switch1 in position2 or5
until the rear window is clean.
For information on filling up the washer
reservoir, see “Windshield/rear window
washer system and headlamp cleaning
system*” (
page 333).
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.
iThe rear window wiper engages auto-
matically if the automatic transmission
is shifted to positionR with the wind-
shield wipers switched on.


182 Controls in detailAutomatic transmissionFor more information on driving with an
automatic transmission, see “Automatic
transmission” section (
page 49).
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 shift program.
Gear selector lever
The gear selector lever is located on the
right of the steering column.Gearshift pattern for automatic
transmissionPPark position
RReverse gear
NNeutral
DDrive positionShifting from P to N
Moving the gear selector lever up or down
shifts the automatic transmission out of
park positionP:

Depress the brake pedal and keep it
pressed.

Move gear selector lever up or down to
resistance point to select neutral
positionN.
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 transmission out
of park positionP or neutral positionN 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.

320 OperationDriving instructionsControl and operation of radio transmitters
Modular COMAND System, radio and
telephone*Telephones and two-way radios
Radio transmitters, such as a portable
telephone or a citizens band unit should
only be used inside the vehicle if they are
connected to an antenna that is installed
on the outside of the vehicle.
Refer to the radio transmitter operation
instructions regarding use of an external
antenna.
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.
Warning!
G
Do not forget that your primary responsibili-
ty is to drive the vehicle. Only operate the
Modular COMAND System, radio or
telephone
1 if road, weather and traffic con-
ditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.
1Observe all legal requirements.
Warning!
G
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system,
possibly resulting in an accident and/or
personal injury.
!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 potentially
start a fire.

329 Operation
Engine compartment
Other display messages
If the SmartKey or KEYLESS-GO*
start/stop button is not in position2, the
following message will appear:Turn on ignition
to see engine oil level
Switch on the ignition (
page 34).
If you see the message:
Observe waiting time
If the engine is at operating
temperature, wait five minutes before
repeating check procedure.

If the engine is not at operating temper-
ature, wait 30 minutes before repeat-
ing check procedure.If you see the message:
Engine oil level
Not when engine on
Turn off the engine.

If the engine is at operating tempera-
ture, wait five minutes before checking
oil.

If the engine is not at operating temper-
ature yet, you must wait 30 minutes
before checking oil.
If there is excess engine oil with the engine
at operating temperature, the following
message will appear:
Engine oil level
Reduce oil level
Have excess oil siphoned or drained
off. Contact an authorized
Mercedes-Benz Light Truck Center.For more information on messages in the
multifunction display concerning engine
oil, see “Practical hints” (
page 381).
!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.

332 OperationEngine compartment
Unscrew filler cap1 from filler neck.

Add engine oil as required. Be careful
not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.

Screw filler cap1 back on filler neck.
For more information on engine oil, see
“Technical data” (
page 481).
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.

414 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
N
Check eng. oil level
when next refueling
The engine oil level is too low.

Check the engine oil level (
page 328)
(ML 500 only), or (
page 330) (ML 350
only).
USA only:Add 1 qt. engine oil
when next refuelingCanada only:Add 1 liter engine oil
when next refueling
The engine oil level is too low.

Add engine oil (
page 331) and check
the engine oil level (page 328) (ML 500
only), or (
page 330) (ML 350 only).
Engine oil level
Stop, engine off
There is no oil in the engine.
There is a danger of engine dam-
age.

Carefully bring the vehicle to a halt as
soon as possible.

Turn off the engine.

Add engine oil (
page 331) and check
the engine oil level (page 328) (ML 500
only), or (
page 330) (ML 350 only).
Engine oil level
Reduce oil level
You have added too much en-
gine oil. There is a risk of damag-
ing the engine or the catalytic
converter.

Have oil siphoned or drained off. Observe
all legal requirements with respect to its
disposal.