Page 95 of 430

92 Restraint systems
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come on at all or if it fails to extinguish after 
approximately 4 seconds or if it comes on thereafter, a 
malfunction in the system has been detected.
The following system components are monitored or 
undergo a self-check: crash-sensor(s), airbag ignition 
circuits, front seat belt buckles, emergency tensioning 
retractors, seat sensor.
Initially, when the electronic key is turned from starter 
switch position 0 to position 1 or 2, malfunctions in the 
crash sensor are detected and indicated (the “SRS” 
indicator lamp stays on longer than 4 seconds or does 
not come on).
Have the system checked at your authorized 
Mercedes-Benz Center immediately.
In the operational mode, after the indicator lamp has 
gone out following the initial check, interruptions or 
short circuits in the airbag ignition circuit and in the 
driver and front passenger seat belt buckle harnesses, 
and low voltage in the entire system are detected and 
indicated.Note:
See page 305 for information on the Supplemental 
Restraint System (SRS) indicator lamp.
The driver and passenger front airbags are designed to 
activate only in certain frontal impacts exceeding a 
preset threshold. The front passenger airbag deploys 
only if the front passenger seat is occupied and the 
7 indicator lamp on the center console is not 
illuminated.
Note:
Heavy objects on the front passenger seat can appear to 
the “SRS” to indicate the presence of an occupant in 
that seat which causes the passenger front airbag to 
deploy in a crash exceeding the appropriate threshold.
Wa r n i n g !
In the event a malfunction of the “SRS” is indicated 
as outlined above, the “SRS” may not be
operational. For your safety, we strongly 
recommend that you visit an authorized 
Mercedes-Benz Center immediately to have the 
system checked; otherwise the “SRS” may not be 
activated when needed in an accident, which could 
result in serious or fatal injury, or it might deploy 
unexpectedly and unnecessarily which could also 
result in injury. 
     
        
        Page 159 of 430

156 Engine oil level indicator
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Engine oil level indicator
To check the engine oil level, park vehicle on level 
ground, with engine at normal operational temperature.
Check oil level approximately 5 minutes after turning 
off the engine, allowing for the oil to return to the oil 
pan.
The message “OBSERVE WAITING PERIOD” will be 
displayed if the required waiting period has not been 
observed after turning off the engine:
•with engine at operational temperature 
approximately 5 minutes.•with engine not at operational temperature up to 
approximately 30 minutes.
The engine oil level check can be repeated after a short 
time.
Turn the electronic key in starter switch to position 2.
To call up the trip odometer and main odometer, press 
button è or ÿ on the multifunction steering 
wheel until the display appears. See page 122. 
Press button j or k on the multifunction 
steering wheel repeatedly until the “CORRECT 
MEASUREMENT ONLY IF VEHICLE LEVEL” engine oil 
level indicator appears. This indicator is only a 
reminder. Measurement can be cancelled by pressing 
button j or k if the vehicle is not parked on level 
ground. An incorrect reading will be recorded if you do 
not cancel the measurement. Move the vehicle to level 
ground and measure again.
The electronic key in starter switch is not in position 2 if 
the “ENGINE OIL LEVEL – IGNITION ON PLEASE!” 
message appears.
The “ENGINE OIL LEVEL – MEASUREMENT IN 
PROCESS” message is displayed after approximately 
3seconds.
MEASUREMENT CORRECT 
     
        
        Page 230 of 430

227 Tele Aid
Te ch n i c a l
data Instruments 
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cluster displayPractical hints Car care Index Stolen vehicle tracking services
In the event your vehicle was stolen, report the incident 
to the police who will issue a numbered incident report. 
Pass this number on to the Mercedes-Benz Response 
Center.
The Response Center will then attempt to covertly 
contact the vehicle’s Tele Aid system. Once the vehicle 
is located, the Response Center will contact the local 
Law Enforcement and you. The vehicle’s location will 
only be provided to Law Enforcement.
Info Services (optional, except Canada)
Info Services categories include news, sports, stocks, 
weather and calendar reminders. Choices can be 
selected via www.mbusa.com or by calling 1-800-FOR-
MERcedes.
To request Info Services, press the SVC button on the 
COMAND system, then select “SEND NEW REQUEST 
FOR INFO SERVICE”. “NEW INFO SERVICE REQUEST 
TRANSMITTED” will appear in the COMAND display 
and call status messages will appear in the 
multifunction display.Once information is available, the message “NEW INFO 
RECEIVED - READ LATER WHEN STOPPED?”will 
appear. Select “Yes”. With the vehicle stopped in a safe 
location press SVC, then select “View Info Service of 
mm.dd.yyyy hh.mm”. Messages will be retained for 
30 minutes once the ignition is switched off.
Important!
Tele Aid utilizes the cellular network for 
communication and the GPS (Global Positioning 
System) satellites for vehicle location. If either of these 
signals are unavailable, the Tele Aid system may not 
function and if this occurs, assistance must be 
summoned by other means.
Wa r n i n g !
If the indicator lamp in the “SOS” button does not 
illuminate during or remains illuminated after the 
system self-check or if the message “TELE AID – 
VISIT WORKSHOP” appears in the multifunction 
display, have the system checked at the nearest 
Mercedes-Benz Center as soon as possible. 
     
        
        Page 343 of 430
340 Engine compartment
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To  o p e n :
To unlock the hood, pull release lever (1) under the 
driver´s side of the instrument panel. At the same time 
a handle will extend out of the radiator grill.
The engine is equipped with a transistorized 
ignition system. Because of the high voltage it is 
dangerous to touch any components (ignition coils, 
spark plug sockets, diagnostic socket) of the 
ignition system
• with the engine running,
• while starting the engine,
• if ignition is “on” and the engine is turned 
manually.
1
P88.40-2001-26