2004 MERCEDES-BENZ CL500 inflation pressure

ContentsUseful features .................................. 221
Storage compartments................. 221
Ashtrays ....................................... 227
Cigarette lighter ........................... 228
Heated steering wheel* ............... 228
Telephone*................................... 229
Tele Aid ........................................ 230
Garage door opener ..................... 238
Infrared reflecting windshield ....... 244
Operation........................................ 245
The first 1000 miles (1500 km) ......... 246
Driving instructions............................ 247
Drive sensibly – save fuel ............. 247
Drinking and driving ..................... 247
Pedals .......................................... 247
Power assistance ......................... 247
Brakes .......................................... 248
Driving off .................................... 249
Parking ......................................... 249
Tires ............................................. 250
Hydroplaning ................................ 251
Tire traction.................................. 251
Tire speed rating .......................... 251
Winter driving instructions ........... 252
Standing water ............................. 253
Passenger compartment .............. 254
Driving abroad.............................. 254
Control and operation of radio
transmitters ................................. 254
Catalytic converter ....................... 255
Emission control .......................... 255
Coolant temperature .................... 256At the gas station .............................. 257
Refueling ...................................... 257
Check regularly and before a
long trip ....................................... 258
Engine compartment ......................... 260
Hood ............................................ 260
Engine oil ..................................... 261
Transmission fluid level................ 266
Active Body Control (ABC)
fluid level ..................................... 266
Coolant ........................................ 266
Battery ......................................... 268
Windshield washer system and
headlamp cleaning system........... 269
Tires and wheels................................ 270
Important guidelines .................... 270
Life of tires................................... 271
Direction of rotation..................... 271
Checking tire inflation pressure ... 271
Rotating wheels ........................... 279
Winter driving .................................... 280
Winter tires .................................. 280
Block heater (Canada only) .......... 281
Snow chains................................. 281

259 Operation
At the gas station
Windshield washer system and head-
lamp cleaning system
For more information on refilling the wash-
er reservoir, see “Windshield washer sys-
tem and headlamp cleaning system”
(page 269).
Coolant
For more information, see “Coolant”
(page 266) and see “Coolants”
(page 376).Brake fluid
For more information on brake fluid, see
“Brake fluid” (
page 375).
Engine oil level
For more information on engine oil, see
“Engine oil” (
page 261).Vehicle lighting
Check function and cleanliness. For more
information on replacing light bulbs, see
“Replacing bulbs” (
page 336).
For more information , see “Exterior lamp
switch” (
page 119).
Tire inflation pressure
For information on tire inflation pressure,
see “Checking tire inflation pressure”
(
page 271).
!If you find that the brake fluid in the
brake fluid reservoir has fallen to the
minimum mark or below, have the
brake system checked for brake pad
thickness and leaks immediately.
Notify an authorized Mercedes-Benz
Center immediately. Do not add brake
fluid as this will not solve the problem.
For more information, see “Practical
hints” (
page 293).

271 Operation
Tires and wheels
Life of tires
The service life of a tire is dependent upon
varying factors including but not limited to:

Driving style


Tire pressure


Distance driven
Direction of rotation
Unidirectional tires offer added advantag-
es, such as better hydroplaning perfor-
mance. To benefit, however, you must
make sure the tires rotate in the direction
specified.
An arrow on the sidewall indicates the in-
tended direction of tire rotation.
Checking tire inflation pressure
Regularly check your tire pressure at inter-
vals of no more than 14 days.
Correct the tire pressure only when tires
are cold.
If the tires are warm, you should only cor-
rect the tire pressure if it is too low for cur-
rent operating conditions.
A table on the fuel filler flap lists the spec-
ified tire inflation pressures for warm and
cold tires as well as for various operating
conditions.
Warning!
G
Tires and spare tire should be replaced after
six years, regardless of the remaining tread.!Keep unmounted tires in a cool, dry
place with as little exposure to light as
possible. Protect tires from contact
with oil, grease and gasoline.
Warning!
G
If the tire pressure repeatedly drops:

Check the tires for punctures from for-
eign objects.


Check to see whether air is leaking from
the valves or from around the rim.

272OperationTires and wheelsTire pressure changes by approximately
1.5 psi (0.1 bar) per 18°F (10°C) of air
temperature change. Keep this in mind
when checking tire pressure where the
temperature is different from the outside
temperature.
Tire temperature and tire pressure also in-
crease while driving, depending on the
driving speed and the tire load.Check the spare tire periodically for condi-
tion and inflation pressure. Spare tires will
age and become worn over time even if
never used, and thus should be inspected
and replaced when necessary or after a
maximum of six years.
iThe pressures listed for light loads are
minimum values offering high driving
comfort.
Increased inflation pressures listed for
heavier loads may also be used for light
loads. These higher pressures produce
favorable handling characteristics. The
ride of the vehicle, however, will be
somewhat harder. Never exceed the
max. values or inflate tires below the
min. values listed on the fuel filler flap.
Warning!
G
Follow recommended tire inflation pres-
sures.
Do not overinflate tires. Overinflated tires
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes,
etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
Do not overload the tires by exceeding the
specified vehicle capacity weight (as indicat-
ed by the label on the pillar in the driver’s
door opening). Overloading the tires can
overheat them, possibly causing a blowout.

273 Operation
Tires and wheels
Checking tire pressure electronically*
(vehicles produced up to approximate-
ly October 2003)
The tire inflation pressure monitor only
functions on wheels that are equipped with
the proper electronic sensors. It monitors
the tire inflation pressure, as selected by
the driver, in all four tires. A warning is is-
sued to alert you to a decrease in pressure
in one or more of the tires.
Tire pressure inquiries are made using the
multifunction display (
page 129). The in-
flation pressures are displayed only after a
few minutes travel time.
You can select the unit of measure used for
the tire inflation pressure by changing the
setting in the control system (
page 129).

Switch on ignition.

Press buttonè orÿ on the mul-
tifunction steering wheel repeatedly
until the standard display menu ap-
pears in the multifunction display
(page 129).

Press button k orj repeatedly
until you see the current inflation pres-
sures for each tire appear in the dis-
play.
iCheck with an authorized
Mercedes-Benz Center to determine
the equipment installed in your vehicle.
iPossible differences between the read-
ings of a tire pressure gauge of an air
hose, e.g. gas station equipment, and
the vehicle’s control system can occur.
The readings issued by the control sys-
tem are more precise.
Warning!
G
The tire inflation pressure monitor does not
indicate a warning for wrongly selected in-
flation pressures. Always adjust tire inflation
pressure according to the label on the fuel
filler flap.
The tire inflation pressure monitor is not
able to issue a warning due to a sudden dra-
matic loss of pressure (e.g. tire blowout
caused by a foreign object). In this case
bring the vehicle to a halt by carefully apply-
ing the brakes and avoiding abrupt steering
maneuvers.iOperating radio transmission equip-
ment (e.g. wireless headsets, two-way
radios) in or near the vehicle could
cause the tire inflation pressure moni-
tor to malfunction.

274OperationTires and wheels
Activating the tire inflation pressure
monitor
You must activate the tire inflation pres-
sure monitor in the following cases:

If you have changed the tire pressure


If you have replaced the wheels or tires


If you have installed new wheels or
tires

Make sure the tire pressure is correctly
set.

Press buttonè orÿ on the mul-
tifunction steering wheel repeatedly
until the standard display menu ap-
pears in the multifunction display
(page 129).

Press button j or k repeatedly
until you see the current inflation pres-
sures for each tire appear in the display
or the following message appears in
the displayTIRE PRES.
DISPLAY AFTER DRIVING
A FEW MINS.
REACTIVATE USING
R-BUTTON
Warning!
G
Follow recommended tire inflation pres-
sures.
Do not overinflate tires. Overinflating tires
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes,
etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
Do not overload the tires by exceeding the
specified vehicle capacity weight (as indicat-
ed by the label on the pillar in the driver’s
door opening). Overloading the tires can
overheat them, possibly causing a blowout.
iIf transporting a deflated road wheel or
additional wheel sensors in the vehicle,
the tire inflation pressure monitor
should not be reactivated until the de-
flated wheel or additional wheel sen-
sors have been removed from the
vehicle. Otherwise, the deflated wheel
or additional sensors could cause the
tire inflation pressure monitor system
to malfunction.

275 Operation
Tires and wheels

Press the reset button on the instru-
ment cluster (
page 22).
The following message will appear in
the multifunction display:
MONITOR CURRENT TIRE PRESSURE


Press æ button.
The following message will appear in
the multifunction display:TIRE PRESS. CONTROL ACTIVATED!The tire inflation pressure monitor will
now monitor the tire inflation pressure
values of all four tires.
The following message will appear in
the multifunction display:TIRE PRES.
DISPLAY AFTER DRIVING
A FEW MINS.
REACTIVATE USING
R-BUTTONThis display appears until the individual
inflation pressure values are matched
with the tires. The individual values are
then displayed (
page 273).If you wish to cancel activation:

Press ç button.
If the following message appears in the
multifunction display:REACTIVATE TIRE

PRES. MONITOR

or
TIRE PRES.

CHECK TIRES!


Check the tire inflation pressures and
correct them if necessary.

Reactivate the tire inflation pressure
monitor.Checking tire pressure electronically*
(vehicles produced as of approximately
October 2003)
The tire inflation pressure monitor only
functions on wheels that are equipped with
the proper electronic sensors. It monitors
the tire inflation pressure, as selected by
the driver, in all four tires. A warning is is-
sued to alert you to a decrease in pressure
in one or more of the tires.
You can call up the tire pressure using the
control system (
page 129).
iCheck with an authorized
Mercedes-Benz Center to determine
the equipment installed in your vehicle.

276OperationTires and wheels

Switch on ignition.

Press buttonè or ÿ on the mul-
tifunction steering wheel repeatedly
until the standard display menu ap-
pears in the multifunction display
(page 129).

Press button k orj repeatedly
until you see the current inflation pres-
sures for each tire appear in the dis-
play.
iAfter you have reactivated the tire
pressure monitor, the current tire pres-
sures will only be shown after a few
minutes’ driving time.
During this time, you will see the follow-
ing message in the display:TIRE PRES. DISPLAY
APPEARS AFTER
DRIVING A FEW MINUTESiPossible differences between the read-
ings of a tire pressure gauge of an air
hose, e.g. gas station equipment, and
the vehicle’s control system can occur.
The readings issued by the control sys-
tem are more precise.
Warning!
G
When the tire pressure monitoring system
warning lamp is lit, one or more of your tires
is significantly under-inflated. You should
stop and check your tires as soon as possi-
ble, and inflate them to the proper pressure
as indicated on the vehicle’s tire information
placard. Driving on a significantly under-in-
flated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life,
and may affect the vehicle’s handling and
stopping ability. Each tire, including the
spare, should be checked monthly when
cold and set to the recommended inflation
pressure as specified in the vehicle placard
and owner’s manual.iThe recommended tire inflation pres-
sure for your vehicle can be found on
the inside of the fuel filler flap, not in
the owner’s manual.