Page 212 of 376

212 Controls in detailUseful 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 respective  
indicator lamp will stop flashing. The CO-
MAND* system operation will resume.
!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 Canada) as soon as possible.
!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 
Customer Service at 1-800-387-0100 
in Canada.iThe indicator lamp in the respective 
button flashes until the call is conclud-
ed. 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 buttonì on the multifunc-
tion steering wheel. 
         
        
        
     
        
        Page 236 of 376

236 OperationEngine compartment
Engine compartmentHood
Opening
1Hood release
Pull lever1 downwards.
The hood is unlocked and handle2 
will extend out of the radiator grille.2Handle for opening the hood
Pull handle2 to its stop out of radia-
tor grille.
Pull up on the hood (do not pull up on 
the handle) and then release it.
The hood will be automatically held 
open at shoulder height by gas-filled 
struts. 
Warning!
G
Do not pull the release lever while the vehi-
cle is in motion. Otherwise the hood could 
be forced open by passing air flow.
!To avoid damage to the windshield wip-
ers or hood, never open the hood if the 
wiper arms are folded forward away 
from the windshield.
Warning!
G
To help prevent personal injury, stay clear of 
moving parts when the hood is open and the 
engine is running. Make sure the hood is 
properly closed before driving. When closing 
the hood, use extreme caution not to catch 
hands or fingers.
The radiator fan may continue to run for ap-
proximately 30 seconds or even restart af-
ter the engine has been turned off. Stay 
clear of fan blades. 
         
        
        
     
        
        Page 269 of 376

269 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
#
BATTERY/ALTERNATOR
VISIT WORKSHOP!
The battery was charged with a battery 
charger or jump started.
Have the battery checked at a service 
station. 
The battery is no longer charging.
Possible causes:
alternator malfunctioning
broken poly-V-belt
Stop immediately and check the 
poly-V-belt.
If it is broken:
Do not continue to drive. Otherwise 
the engine will overheat due to an 
inoperative water pump which may 
result in damage to the engine. Notify 
an authorized Mercedes-Benz Center.
If it is intact:
Drive immediately to the nearest 
authorized Mercedes-Benz Center.
UNDERVOLTAGE
ENGINE ON!
The battery has insufficient voltage and 
can no longer supply the convenience 
functions such as seat heater*.
Start the engine (
page 44).
UNDERVOLTAGE
SWITCH CONSUMERS OFF!
The battery is malfunctioning.
Have the battery checked at a service 
station.
!
(Canada only)
;
(USA only)
PARK. BRAKE
RELEASE BRAKE!
You are driving with the parking brake 
set.
Release the parking brake 
(page 46).  
         
        
        
     
        
        Page 272 of 376

272 Practical hintsWhat to do if …
During severe operating conditions and 
stop-and-go city traffic, the coolant tem-
perature may rise close to 248°F (120°C).
Display symbol
Display message
Possible cause
Possible solution
Ï
COOLANT
STOP, ENGINE OFF!
The coolant is too hot. 
Stop the vehicle and turn off the 
engine.
Only start the engine again after the 
message disappears. You could 
otherwise damage the engine.
Warning!
G
Driving when your engine is badly over-
heated can cause some fluids which may 
have leaked into the engine compartment to 
catch fire. You could be seriously burned. 
Steam from an overheated engine can cause 
serious burns and can occur just by opening 
the engine hood. Stay away from the engine 
if you see or hear steam coming from it. 
Turn off the engine, get out of the vehicle 
and do not stand near the vehicle until it 
cools down.
!The engine should not be operated with 
the coolant temperature above 248°F 
(120°C). Doing so may cause serious 
engine damage which is not covered by 
the Mercedes-Benz Limited Warranty. 
         
        
        
     
        
        Page 288 of 376
288 Practical hintsUnlocking/locking in an emergency
Unlocking/locking in an emergencyUnlocking the vehicle
If you are unable to unlock the vehicle with 
the SmartKey, open the driver’s door using 
the mechanical key.
The passenger door cannot be unlocked 
manually.
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of ar-
row and slide the mechanical key2 
out of the housing.Unlocking the driver’s door
3Unlocking
4Locking
Unlock the door with the mechanical 
key. To do so, push the mechanical key 
in the lock until it stops and turn it to 
the left.
iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft 
alarm system. To cancel the alarm, do 
one of the following:
Press buttonŒ or ‹ on the 
SmartKey. 
Insert the SmartKey in the starter 
switch.  
         
        
        
     
        
        Page 368 of 376

368 IndexSignal strength (telephone*) 135
Simultaneous wiping and washing
Windshield wipers 50
Single wipe 50
Sliding/pop-up roof
Closing 190, 292
Opening 190, 292
Opening with SmartKey 192
Stopping 191
SmartKey 82
Locking and unlocking 82
Opening and closing 
power window with 188
Opening and closing windows 188
Opening the 
sliding/pop-up roof with 192
Unlocking with 30
Snow chains 248
Soft keys
Audio system 162
Spare parts service 320Spare tire
Inflating 304
Spare wheel* 285
Bolts 287
Mounting 301
Speed
Saving current 195
Speed settings
Cruise control 196
Speedometer 23
Settings units 124
Speedometer display mode
Selecting 124
Split rear bench seat 197
SRS 63, 345
Indicator lamp 262
Standing lamps 98
Replacing bulbs 293, 294, 296, 297
Standing water
Driving instructions 229
Starter switch 21, 31Positions 31
Starting difficulties 46
Starting position 31
Starting the engine 44
Station (radio)
Search 115
Station selection
Setting 128
Steering column
Height adjustment 38
Length adjustment 38
Messages in display 282
Steering gear oil
Message in display 282
Steering wheel
Adjusting 37
Buttons 24
Cleaning 255
Electrical adjustment 38
Height adjustment 38 
         
        
        
     
        
          
   
    
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