2003 MERCEDES-BENZ CL500 display

215 Controls in detail
Useful features
Upgrade Signals
The Tele Aid system processes calls using
the following priority:

Automatic emergency – First priority


Manual emergency – Second priority


Roadside Assistance – Third priority


Information – Fourth priority
Should a higher priority call be initiated
while you are connected, an upgrade (al-
ternating) tone will be heard, and the ap-
propriate indicator lamp will flash. If
certain information such as vehicle identi-
fication number or customer information is
not available, the operator may need to re-
transmit.
During this time you will hear a beep and
voice contact will be interrupted. Voice
contact will resume once the retransmis-
sion is completed. Once a call is conclud-
ed, a beep will be heard and the
appropriate indicator lamp will stop flash-
ing. The COMAND system operation will
resume. See System self-check (
page 210)
when the indicator lamp does not light
up in red or stays on longer than ap-
proximately 10 seconds.
If the indicator lamp in the Information
button
¡
is illuminated continuous-
ly and no voice connection to the Re-
sponse Center has been established,
then the Tele Aid system could not ini-
tiate an Information call (e.g. the rele-
vant cellular phone network is not
available). The message
INFO –
CALL FAILED
appears in the multifunc-
tion display.
Information calls can be terminated us-
ing the
ì
button on the multifunc-
tion steering wheel.
!If the indicator lamps do not start flash-
ing after pressing one of the buttons or
remain illuminated (in red) at any time,
the Tele Aid system has detected a
fault or the service is not currently ac-
tive, and may not initiate a call. Visit
your Mercedes-Benz Center and have
the system checked or contact the Re-
sponse Center at 1-800-756-9018 (in
the USA) or 1-888-923-8367 (in Cana-
da) as soon as possible.

216 Controls in detailUseful features
Remote door unlock
In the event that you have locked your ve-
hicle unintentionally (e.g. key inside vehi-
cle), and the reserve key is not handy:
Contact the Mercedes-Benz Response
Center at 1-800-756-9018 (in the USA)
or 1-888-923-8367 (in Canada).
You will be asked to provide your pass-
word which you provided when you
completed the subscriber agreement.

Then return to your vehicle and press
the trunk lock for a minimum of
20 seconds until the SOS button is
flashing.
The message
EMERGENCY CALL –
CALL CONNECTED appears in the multi-
function display.
As an alternative, you may unlock the vehi-
cle via Internet using the ID and password
sent to you shortly after the completion of
your Acquaintance Call.
!If the indicator lamp continues to flash
or the system does not reset, contact
the Response Center at
1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada), or
Mercedes-Benz Customer Assistance
at 1-800-FOR-MERCedes
(1-800-367-6372) in the USA or Cus-
tomer Service at 1-800-387-0100 in
Canada.iThe indicator lamp in the correspond-
ing button flashes until the call is con-
cluded. Calls can only be terminated by
a Response Center or Customer Assis-
tance Center representative except
Roadside Assistance and Information
calls, which can also be terminated by
pressing button
ì
on the multifunc-
tion steering wheel.
iWhen a Tele Aid call has been initiated,
the audio system or the COMAND sys-
tem audio is muted and the selected
mode (radio, tape or CD) pauses. The
optional cellular phone (if installed)
switches off. If it is necessary for you to
use this phone, then the vehicle must
be at a standstill. Disconnect the coiled
cord and place the call. The COMAND
navigation system (if engaged) will con-
tinue to run. The display in the instru-
ment cluster is available for use and
spoken commands are only available
by pressing the RPT button on the CO-
MAND unit. A pop-up window will ap-
pear in the COMAND display to
indicate that a Tele Aid call is in
progress.

217 Controls in detail
Useful features
The Response Center will then unlock your
vehicle with the remote door unlocking
feature.Stolen vehicle tracking services
In the event your vehicle was stolen:

Report the incident to the police.
The police will issue a numbered inci-
dent report.

Give this number to the Mercedes-Benz
Response Center along with the pass-
word which was issued to you when
you subscribed to the service.
The Response Center will then attempt
to covertly contact the vehicle’s
Tele Aid system. Once the vehicle is lo-
cated, the Response Center will con-
tact the local law enforcement and you.
The vehicle’s location will only be pro-
vided to law enforcement.
Garage door opener
The built-in remote control is capable of
operating up to three separately controlled
objects.
1Indicator lamp
2, 3, 4Signal transmitter key
5Hand-held remote control trans-
mitter (not part of vehicle equip-
ment)
iThe remote door unlocking feature is
available if the relevant cellular phone
network is available.
The SOS button will flash and the mes-
sage
EMERGENCY CALL –
CALL CONNECTED
will appear in the mul-
tifunction display to indicate receipt of
the door unlock command.
Once the vehicle is unlocked, a Re-
sponse Center specialist will attempt
to establish voice contact with the ve-
hicle occupants.
If the trunk button was pressed for
more than 20 seconds before door un-
lock authorization was received by the
Response Center, you must wait
15 minutes before pressing the trunk
lock again.

239 Operation
Engine compartment
Checking the engine oil level with the
control system
You can check the engine oil level on the
multifunction display.
Turn the key in the starter switch to
position2.
The standard display (
page 122) should
appear in the multifunction display.

Press button
k
or
j
on the
steering wheel until the following mes-
sage is seen in the multifunction dis-
play:
ENGINE OIL LEVEL
MEASURING NOW
MEASURE. CORRECT
ONLY IF VEH. LEVEL
One of the following messages will sub-
sequently appear in the indicator:

ENGINE OIL LEVEL
OK


ADD 1.0 QT. TO
REACH MAX. OIL LEVEL!(Canada:
1.0 LITER
)


ADD 1.5 QTS. TO
REACH MAX. OIL LEVEL!(Canada:
1.5 LITERS
)


ADD 2.0 QTS. TO
REACH MAX. OIL LEVEL!(Canada:
2.0 LITERS
)

If necessary, add engine oil.
For adding oil see (
page 241).Other display messages
If the key is not turned to position 2 in the
starter switch, the following message will
appear:
FOR ENGINE OIL LEVEL
SWITCH ON IGNITION!
Switch on the ignition.
If you see the message:
OBSERVE WAITING PERIOD
Wait five minutes before repeating
check procedure.
If you see the message:
ENGINE OIL LEVEL
NOT WHEN ENGINE ON!
Turn off the engine. If engine is at nor-
mal operating temperature, wait five
minutes before checking oil. If the en-
gine is not yet at normal operating tem-
perature, you must wait 30 minutes
before checking oil.


240OperationEngine compartmentIf there is excessive engine oil with the en-
gine at normal operating temperature, the
following message will appear:ENGINE OIL LEVEL
REDUCE OIL LEVEL
Have excess oil siphoned.
See “Practical hints” (
page 281) if the
engine oil level indicator lights up in the
display while the engine is running.
More information on engine oil can be
found in the “Technical data”
(
page 339).Checking the engine oil level with the
oil dipstick (CL 500, CL 55 AMG only)
The engine oil level can be checked by ei-
ther oil dipstick1 or via the multifunction
display in the instrument cluster
(
page 239). The amount of engine oil
needed is shown more precisely on the op-
erating system display.
1Oil dipstick

Open the hood (
page 237).

Pull out oil dipstick1 (
page 241).

Wipe oil dipstick1 clean.

Fully insert oil dipstick1 into the dip-
stick guide tube, and remove after ap-
proximately three seconds to obtain an
accurate reading.
1Oil dipstick
iIf you want to stop the checking proce-
dure, press the
k
or
j
button on
the multifunction steering wheel.

241 Operation
Engine compartment
The oil level is acceptable when it leaves a
line between the upper and lower marks of
oil dipstick 1.
For adding oil see (
page 241).
See “Practical hints” (page 281) if the
engine oil level indicator lights up in the
display while the engine is running.
More information on engine oil can be
found in the “Technical data”
(
page 339).Adding engine oil
CL 500, CL 55 AMG1Filler neck capCL 6001Filler neck cap

Unscrew the filler neck cap 1 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 the filler neck cap 1 back on the
filler neck.
More information on engine oil can be
found in the “Technical data”
(
page 339).
iFill quantity between upper and lower
oil dipstick marking level is approxi-
mately 2.1 US qt (2.0 l).
!Excessive 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.

242OperationEngine compartmentTransmission 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 Center
check the automatic transmission.Active Body Control (ABC) fluid level
Regular fluid level check is not required. If
you notice fluid leaks or malfunction mes-
sages in the multifunction display, have an
authorized Mercedes-Benz Center check
the ABC system.
Coolant
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.
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 engine temperature is above
194°F (90°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 ½ 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.

248OperationTires 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.Checking tire pressure electronically*
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 117). 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 117).
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 inflation pressures.
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.
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.