2004 MERCEDES-BENZ CL500 tires

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.

277 Operation
Tires and wheels
Reactivating the tire pressure monitor
The tire pressure monitor must be reacti-
vated in the following situations:

if you have changed the tire pressure


if you have replaced the wheels or tires


if you have installed new wheels or
tires

Using the table on the fuel filler flap,
make sure the tire inflation pressure of
all four tires is correct.

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
APPEARS AFTER
DRIVING A FEW MINUTES
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.
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.

278OperationTires and wheels
Press the reset button on the instru-
ment cluster (
page 22).
The following message will appear in
the multifunction display:
CHECK CURRENT TIRE PRES.?


Press the æ button.
The following message will appear in
the multifunction display:TIRE PRES. MONITOR REACTIVATED The tire inflation pressure monitor will
now monitor the tire inflation pressure
values of all four tires.
Afterward, the following message will
appear in the display:TIRE PRES. DISPLAY
APPEARS AFTER
DRIVING A FEW MINUTESThis display appears until the individual
inflation pressure values are matched
with the tires. The individual values are
then displayed (
page 275).If you wish to cancel activation:

Press ç button.
If one of the following messages appears in
the multifunction display:


TIRE PRES. MONITOR
REACTIVATE AFTER
CORRECTING PRESSURE!


TIRE PRES.
PLEASE CORRECT!


Check the tire inflation pressures and
correct them if necessary.

Reactivate the tire inflation pressure
monitor.
iIf you are transporting a deflated tire in
the vehicle, do not activate the tire
inflation pressure monitor until:

the deflated tire is no longer in the
vehicle


you have inflated the tire to the cor-
rect pressure

279 Operation
Tires and wheels
Rotating wheels
On vehicles with the same wheel size all
around, wheels can be rotated every 3000
to 6000 miles (5000 to 10 000 km), or
sooner if necessary, according to the de-
gree of tire wear. The same direction of tire
rotation must be retained.
Rotate the wheels before the characteris-
tic tire wear pattern becomes visible
(shoulder wear on front wheels and tread
center wear on rear wheels).Thoroughly clean the inner side of the
wheels after each rotation. Check and en-
sure proper tire inflation pressure. If nec-
essary, activate the tire inflation pressure
monitor.
For information on wheel change, see the
“Practical hints” section (
page 329) and
(
page 343).
Warning!
G
Rotate front and rear wheels only if they are
of the same size.
!Your vehicle is equipped with a tire in-
flation pressure monitor, there are
electronic components built into the
wheel.
Do not use mounting tools in the area
of the valve as they could damage the
electronic components.
To prevent damage or incorrect instal-
lation, have the tires changed at an au-
thorized Mercedes-Benz Center.
Warning!
G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
110 lb-ft. (150 Nm).
Use only genuine Mercedes-Benz wheel
bolts specified for your vehicle's rims.

280OperationWinter driving
Winter drivingBefore the onset of winter, have your vehi-
cle winterized at an authorized
Mercedes-Benz Center. This service in-
cludes:

Check of anticorrosion and antifreeze
concentration.


Addition of cleaning concentrate to the
water of the windshield and headlamp
cleaning system. Add MB Concentrate
“S” to a premixed windshield washer
solvent / antifreeze which is formulated
for temperatures below freezing point
(page 377)


Battery test. Battery capacity drops
with decreasing ambient temperature.
A well-charged battery helps to ensure
that the engine can be started even at
low ambient temperatures.


Tire change. Mercedes-Benz recom-
mends M+S rated radial-ply tires with a
minimum tread depth of approximately 1⁄6 in (4 mm) on all four wheels for the
winter season.
Winter tires
Always use winter tires at temperatures
below 45°F (7°C) and whenever wintry
road conditions prevail. Use of winter tires
is the only way to achieve the maximum ef-
fectiveness of the ABS and the ESP in win-
ter operation.
For safe handling, make sure that all
mounted winter tires are of the same make
and have the same tread design.Always observe the speed rating of the
winter tires installed on your vehicle. If the
maximum speed for which your tires are
rated is below the speed rating of your ve-
hicle, you must place a notice to this effect
where it will be seen by the driver. Such no-
tices are available at your tire dealer or any
authorized Mercedes-Benz Center.Warning!
G
Winter tires with a tread depth of less than 1⁄6in (4 mm) must be replaced. They are no
longer suitable for winter operation.
Warning!
G
If you use your spare tire when winter tires
are fitted on the other wheels, be aware that
the difference in tire characteristics may
very well impair turning stability and that
overall driving stability may be reduced.
Adapt your driving style accordingly.
Have the spare tire replaced with a winter
tire at the nearest authorized
Mercedes-Benz Center.

281 Operation
Winter driving
Block heater (Canada only)
The engine is equipped with a block heat-
er.
The electrical cable may be installed at an
authorized Mercedes-Benz Center.Snow chains
Snow chains should only be driven on
snow-covered roads at speeds not to
exceed 30 mph (50 km/h). Remove chains
as soon as possible when driving on roads
without snow.Please observe the following guidelines
when using snow chains:


Use of snow chains is not permissible
with all wheel/tire combinations.


Snow chains should only be used on
the rear wheels. Follow the manufac-
turer's mounting instructions.


Only use snow chains that are ap-
proved by Mercedes-Benz. Your autho-
rized Mercedes-Benz Center will be
glad to advise you on this subject.


Use of snow chains may be prohibited
depending on location. Always check
local and state laws before installing
snow chains.
iWhen using snow chains, the vehicle
should only be driven at vehicle
height 1 (
page 211).
iWhen driving with snow chains, you
may wish to deactivate the ESP
(page 80) before setting the vehicle
in motion. This will improve the
vehicle‘s traction.
!Do not use snow chains with tire sizes
245 / 45 R18 on 8½J x 18 rim and
265 / 40 R18 in general (
page 365).
Do not use snow chains on tires
mounted on AMG rims.

285 Operation
Vehicle care
We have selected car-care products and
compiled recommendations which are
specially matched to our vehicles and
which always reflect the latest technology.
You can obtain Mercedes-Benz approved
car-care products at an authorized
Mercedes-Benz Center.
Scratches, corrosive deposits, corrosion or
damage due to negligent or incorrect care
cannot always be removed or repaired with
the car-care products recommended here.
In such cases it is best to seek aid at an au-
thorized Mercedes-Benz Center.
The following topics deal with the cleaning
and care of your vehicle and give important
“how-to” information as well as references
to Mercedes-Benz approved car-care prod-
ucts.
Additional information can be found in the
booklet “Vehicle Care Guide“.Power washer
When using a power washer for cleaning
the vehicle, always observe the manufac-
turer’s operating instructions.Tar stains
Quickly remove tar stains before they dry
and become more difficult to remove. A tar
remover is recommended.
Paintwork, painted body components
Mercedes-Benz approved Paint Care
should be applied when water drops on the
paint surface do not “bead up”, normally
every three to five months, depending on
climate and washing detergent used.
Mercedes-Benz approved Paint Cleaner
should be applied if the paint surface
shows signs of embedded dirt (i.e. loss of
gloss).
Do not apply any of these products or wax
if your vehicle is parked in the sun or if the
hood is still hot.
Use the appropriate MB-Touch-Up Stick
for quick and provisional repairs of minor
paint damage (i.e. chips from stones, vehi-
cle doors, etc.).
iVehicles with KEYLESS-GO*:
If a door handle is hit by a strong jet of
water, and a SmartKey with
KEYLESS-GO* is in close proximity, i.e.
within approx. 3 ft. (approx. 1 m), the
vehicle could be inadvertently locked
or unlocked. !Never use a round nozzle to
power-wash tires. The intense jet of
water can result in damage to the tire.
Always replace a damaged tire.
Always keep the jet of water moving
across the surface. Do not aim directly
at electrical parts, electrical connec-
tors, seals, or other rubber parts.