Page 26 of 498

25 At a glance
Instrument cluster
Item
Page
1
LLeft turn signal 
indicator lamp
2
vABS/ESP
® warning 
lamp
353
3
Speedometer
4
Multifunction display
147
5
lDistance warning 
lamp
Vehicles without Distronic*: 
Warning lamp without func-
tion. It illuminates with the 
ignition on. It should go out 
when the engine is running.
357
6
KRight turn signal 
indicator lamp
7
Coolant temperature indi-
cator with:•Coolant temperature 
warning lamp
357
Item
Page
8
Tachometer with:1Supplemental 
Restraint System 
(SRS) indicator lamp
 359
-Antilock Brake Sys-
tem (ABS) indicator 
lamp
352
358
AHigh beam headlamp 
indicator lamp
138
9
Main odometer with:
Selector lever position
49
Program mode
182
a
Clock with:
162
;Brake warning lamp, 
USA only
354
3Brake warning lamp, 
Canada only
354
Item
Page
úEngine malfunction 
indicator lamp, USA 
only
355
±Engine malfunction 
indicator lamp, Cana-
da only
355
HCombination low tire 
pressure/TPMS mal-
function telltale*, 
Canada only
360
b
Fuel display with:AFuel reserve warning 
lamp
358
c
Button for:
Resetting trip odometer
146
Adjusting instrument 
cluster illumination
144
Confirming new time 
settings
162 
     
        
        Page 122 of 498
121 Controls in detail
Locking and unlocking
Valet lockingThe lock is located next to the handle 
above the rear license plate recess.
1Neutral position
2Locked
Close the trunk (
page 114).
Pull the mechanical key out of the 
SmartKey (
page 402).
Insert the mechanical key into trunk lid 
lock.
Turn the mechanical key clockwise to 
position2 to lock the trunk.
The trunk remains locked even when 
the vehicle is centrally unlocked.
Turn the mechanical key counterclock-
wise to position1 to unlock the trunk.
You can now open the trunk 
(page 112).
iTo deny any unauthorized person ac-
cess to the trunk, e.g. when you valet 
park the vehicle, lock it separately with 
the mechanical key. Leave only the 
SmartKey or SmartKey with 
KEYLESS-GO* less its mechanical key 
with the vehicle.
iYou can only cancel the separate trunk 
locking mode by means of the 
mechanical key. 
     
        
        Page 146 of 498

145 Controls in detail
Instrument cluster
To brighten illumination
Turn the reset button in the instrument 
cluster clockwise (
page 24).
The instrument cluster illumination will 
brighten.
To dim illumination
Turn the reset button in the instrument 
cluster counterclockwise (
page 24).
The instrument cluster illumination will 
dim.
Coolant temperature indicatorWarning!
G
Driving when your engine is overheated 
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 hood. Stay away from 
the engine if you see or hear steam com-
ing from it.
Turn off the engine, get out of the vehicle 
and do not stand near the vehicle until the 
engine has cooled down.
!Excessive coolant temperature triggers 
the coolant temperature warning lamp 
(page 357) and a warning in the 
multifunction display (
page 379).
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.
iDuring severe operating conditions, 
e.g. stop-and-go traffic, the coolant 
temperature may rise close to 248°F 
(120°C). 
     
        
        Page 163 of 498

162 Controls in detailControl systemTime/Date submenu
Access the 
Time/Date
 submenu via the 
Settings
 menu. Use the 
Time/Date
 sub-
menu to change the time and date display 
settings. The following functions are avail-
able:Synchronizing the time
This function can only be seen on vehicles 
with COMAND and navigation module*.
Move the selection marker with the 
æ or çbutton to the 
Time/Date
 
submenu.
Press buttonj ork repeatedly 
until you see 
Time sync. with head 
unit
 in the multifunction display.
The selection marker is on the current 
setting.
Press buttonæ orç to select 
the desired setting.Set time (hours)
This function can only be seen when time 
synchronization is switched off.
Move the selection marker with the 
æ or çbutton to the 
Time/Date
 
submenu.
Press buttonj ork repeatedly 
until you see 
Clock, hours
 in the 
multifunction display.
The selection marker is on the hour set-
ting.
Press buttonæ orç to set the 
hour.
Confirm by pressing reset button 
(page 24).
Function
Page
Synchronizing the time
162
Set time (hours)
162
Set time (minutes)
163
Set date (month)
163
Set date (day)
163
Set date (year)
164
iInformation on setting the time, refer to 
separate COMAND instructions. 
     
        
        Page 164 of 498
163 Controls in detail
Control system
Set time (minutes)
This function can only be seen when time 
synchronization is switched off.
Move the selection marker with the 
æ orçbutton to the 
Time/Date
 
submenu.
Press buttonj ork repeatedly 
until you see 
Clock, minutes
 in the 
multifunction display.
The selection marker is on the minute 
setting.
Press buttonæ orç to set the 
minutes.
Confirm by pressing reset button 
(page 24).Set date (month)
Move the selection marker with the 
æ or çbutton to the 
Time/Date
 
submenu.
Press buttonj ork repeatedly 
until you see 
Set date month
 in the 
multifunction display.
The selection marker is on the month 
setting.
Press buttonæ orç to set the 
month.Set date (day)
Move the selection marker with the 
æ or çbutton to the 
Time/Date
 
submenu.
Press buttonj ork repeatedly 
until you see 
Set date day
 in the 
multifunction display.
The selection marker is on the day 
setting.
Press buttonæ orç to set the 
day. 
     
        
        Page 263 of 498

262 Controls in detailUseful featuresThe Tele Aid system
(Tele
matic A
larm I
dentification on 
D
emand)
The Tele Aid system consists of three 
types of response:
automatic and manual emergency
roadside assistance
information
The Tele Aid system is operational provid-
ing that the vehicle’s battery is charged, 
properly connected, not damaged and cel-
lular and GPS coverage is available.The speaker volume of a Tele Aid call can 
be adjusted when using the volume control 
on the COMAND System or on the multi-
function steering wheel. To raise, turn the 
rotary volume control on COMAND System 
clockwise or press buttonæ on the 
multifunction steering wheel. To lower, 
turn the rotary volume control on 
COMAND System control counterclock-
wise or press buttonç on the multi-
function steering wheel. 
To activate, press the SOS button, the 
Roadside Assistance button• or 
the Information button¡, depend-
ing on the type of response required.iThe SOS button is located in the over-
head control panel (
page 264).
The Roadside Assistance button• 
and the Information button¡ are 
located below the center armrest cover 
(
page 252).
!The Tele Aid system utilizes the cellular 
network for communication and the 
GPS (G
lobal P
ositioning S
ystem) satel-
lites for vehicle location. If either of 
these signals are unavailable, the 
Tele Aid system may not function and if 
this occurs, assistance must be sum-
moned by other means. 
     
        
        Page 292 of 498

291 Operation
At the gas station
Replace fuel cap by turning it clockwise 
until it audibly engages.
Close the fuel filler flap.
Check regularly and before a long trip
1Windshield washer and headlamp 
cleaning system*
For more information on refilling the 
reservoir, see “Windshield washer sys-
tem and headlamp cleaning system*” 
(
page 300).
2Brake fluid
For more information on brake fluid, 
see “Brake fluid” (
page 464).
3Coolant level
For more information on the coolant 
level, see “Coolant level” (
page 297).
Warning!
G
Overfilling of the fuel tank may create pres-
sure in the system which could cause a gas-
oline fuel discharge. This could cause the 
gasoline fuel to spray back out when remov-
ing the fuel pump nozzle, which could cause 
personal injury.iLeaving the engine running and the fuel 
cap open can cause the yellow fuel 
tank reserve warning lamp to flash and 
the úmalfunction indicator lamp 
(USA only) or the ±malfunction 
indicator lamp (Canada only) to illumi-
nate.
See also “Practical hints” section 
(page 355).
iOnly use premium unleaded gasoline 
with a minimum Posted Octane Rating 
of 91 (average of 96 RON/86 MON). 
Information on gasoline quality can 
normally be found on the fuel pump.
For more information on gasoline, see 
the Factory Approved Service Products 
pamphlet. 
     
        
        Page 299 of 498

298 OperationEngine compartment
The coolant expansion tank is located on 
the driver’s side of the engine compart-
ment.Coolant expansion tank
Using a rag, turn the cap slowly approx-
imately one half turn counterclockwise 
to release any excess pressure.
Continue turning the cap counterclock-
wise and remove it.
The coolant level is correct if the level 
for cold coolant: reaches the top of 
the mark (plastic bridge) visible 
through the filling opening
for warm coolant: is approximately 
0.6 in (1.5 cm) higher
Add coolant as required.
Replace and tighten cap.
For more information on coolant, see the 
“Technical data” section (
page 466).
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 coolant temperature is 
above 158°F (70°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 
1/2 turn to relieve excess pres-
sure. If opened immediately, scalding 
hot fluid and steam will be blown out 
under 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.