2003 MERCEDES-BENZ CL500 warning

282 Practical hintsWhat to do if …?When the
ENGINE OIL LEVEL – CHECK LEV-
EL!
message appears while the engine is
running and at operating temperature, the
engine oil level has dropped to approxi-
mately the minimum mark on the dipstick.When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.
If no oil leaks are noted, continue to drive
to the nearest service station where the
engine oil should be topped to the “full”
mark on the dipstick with an approved oil.
Display
Possible cause
Possible solution
:
ENGINE OIL LEVEL
VISIT WORKSHOP!
The measuring system is malfunctioning.

Have the measuring system checked
by an authorized Mercedes-Benz
Center.
ENGINE OIL LEVEL
CHECK LEVEL!
The engine oil level is too low.

Check the engine oil level
(page 238) and add oil as required.
!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in se-
rious engine damage that is not cov-
ered by the Mercedes-Benz Limited
Warranty.

289 Practical hints
What to do if …?
<
SEAT BELT SYSTEM
VISIT WORKSHOP!
The seat belt system is malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
H
TIRE PRES. MONITOR

PRES. DISPLAY AFTER
DRIVING A FEW MINS. RE-
ACTIVATE USING R BUTTON
The tire pressure is being checked.
TIRE PRES. MONITOR
REACTIVATE!
The tire inflation pressure monitor* is de-
activated.

Activate the tire inflation pressure
monitor* (
page 248).
Display
Possible cause
Possible solution
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.

290 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
H
TIRE PRES. MONITOR
NOT ACTIVE
The tire inflation pressure monitor* is un-
able to monitor the tire pressure due to

the presence of several wheel sensors
in the vehicle.


excessive wheel sensor temperatures.


a nearby radio interference source.


unrecognized wheel sensors mounted.

Check the tire pressure at the next
service station.
TIRE PRES. MONITOR
VISIT WORKSHOP!
The tire inflation pressure monitor* is mal-
functioning.

Have the tire inflation pressure mon-
itor* checked by an authorized
Mercedes-Benz Center.

Change the wheel (
page 308).
A wheel without proper sensor was in-
stalled.

Check and correct tire pressure as
required (
page 248).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.

291 Practical hints
What to do if …?
Display
Possible cause
Possible solution
H
TIRE PRES.
CAUTION, TIRE DEFECT!
One or more tires is rapidly deflating.

Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.

Change the wheel (
page 308).
TIRE PRES.
CHECK TIRES!
The tire pressure in one or more tires is al-
ready below the minimum value.
The tire pressure in one or more tires is
low.

Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.

Change the wheel (
page 308).
TIRE PRES., RF
CAUTION, TIRE DEFECT!
The right front tire is rapidly deflating.

Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.

Change the wheel (
page 308).
TIRE PRES., RF
CHECK TIRES!
The right front tire pressure is low.

Carefully bring the vehicle to a halt.

Check the tire pressure.

Change the wheel (
page 308).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.

292 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
H
TIRE PRES., LF
CAUTION, TIRE DEFECT!
The left front tire is rapidly deflating.

Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.

Change the wheel (
page 308).
TIRE PRES., LF
CHECK TIRES!
The left front tire pressure is low.

Carefully bring the vehicle to a halt.

Check the tire pressure.

Change the wheel (
page 308).
TIRE PRES., RR
CAUTION, TIRE DEFECT!
The right rear tire is rapidly deflating.

Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.

Change the wheel (
page 308).
TIRE PRES., RR
CHECK TIRES!
The right rear tire pressure is low.

Carefully bring the vehicle to a halt.

Check the tire pressure.

Change the wheel (
page 308).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.

293 Practical hints
What to do if …?
Display
Possible cause
Possible solution
H
TIRE PRES., LR
CAUTION, TIRE DEFECT!
The left rear tire is rapidly deflating.

Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.

Change the wheel (
page 308).
TIRE PRES., LR
CHECK TIRES!
The left rear tire pressure is low.

Carefully bring the vehicle to a halt.

Check the tire pressure.

Change the wheel (
page 308).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Display
Possible cause
Possible solution
L
TELE AID MALFUNCTION
VISIT WORKSHOP!
One or more main functions of the Tele Aid
system are malfunctioning.

Have the Tele Aid system checked by
an authorized Mercedes-Benz Cen-
ter.
TELE AID BATTERY
VISIT WORKSHOP!
The emergency power battery for the Tele
Aid system is malfunctioning. If the vehicle
battery is also discharged, Tele Aid will not
be operational.

Have the Tele Aid system checked by
an authorized Mercedes-Benz Cen-
ter.

296 Practical hintsWhere will I find...?Vehicle jack
To prepare the vehicle jack for use
Remove the vehicle jack from the spare
wheel well under the trunk floor.

Push the crank handle up.

Turn the crank handle clockwise until it
engages (operational position).
Storing the vehicle jack in the trunk

Retract the vehicle jack arm to the
base of the vehicle jack.

Push the crank handle up.

Turn the crank handle counterclock-
wise to the end of the stop (storage po-
sition).Spare wheel
Removing the spare wheel

Take out vehicle tool kit tray 2.

Turn the luggage bowl 3 counterclock-
wise.

Remove the spare wheel 4.
Storing the spare wheel

Place spare wheel 4 in wheel well and
secure it with luggage bowl 3.

Turn the luggage bowl 3 clockwise to
its stop.

Place vehicle tool kit tray 2 in luggage
bowl 3.
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack
on level surface. Make sure that the jack
arm is fully seated in the jack take-up brack-
et. Always lower the vehicle onto sufficient
capacity jackstands before working under
the vehicle.

299 Practical hints
Unlocking/locking in an emergency
Changing batteries
If the batteries in the SmartKey or the KEY-
LESS-GO* card are discharged, the vehicle
can no longer be locked or unlocked. It is
recommended to have the batteries re-
placed at an authorized Mercedes-Benz
Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.SmartKey
1Mechanical key
2Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.

Remove mechanical key1
(page 297).

Insert the mechanical key1 in side
opening and push gray slide2.
The battery compartment is unlatched.

Pull the battery compartment out of the
key housing in direction of arrow.

Remove the batteries.
3Battery
4Contact spring

Using a lint-free cloth, insert new
batteries3 under the contact spring4
with the plus (+) side facing up.

Return battery compartment into hous-
ing until it locks into place.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.