
Adjusting the head restraint ............ 77
Cleaning the cover ......................... 239
Correct driver's seat position ........... 75
Important safety notes .................... 75
Seat heating problem ...................... 80
Storing settings (memory func-
tion) ................................................. 84
Switching seat heating on/off ......... 78
Section
Seats ............................................... 75
Selector lever
Cleaning ......................................... 239
Positions ........................................ 109
Sensors (cleaning instructions) ....... 237
Service menu (on-board com-
puter) .................................................. 160
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 284
Coolant (engine) ............................ 284
Engine oil ....................................... 283
Fuel ................................................ 281
Important safety notes .................. 281
Refrigerant (air-conditioning sys-
tem) ............................................... 285
Washer fluid ................................... 285
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 200
Setting the language
see also Digital Operator's Man-
ual .................................................. 200
Setting the time
see also Digital Operator's Man-
ual .................................................. 200
Settings
Factory (on-board computer) ......... 162
On-board computer ....................... 160
SETUP (on-board computer) ............. 163
Side impact air bag ............................. 42
Side marker lamp (display mes-
sage) ................................................... 177
Side windows
Cleaning ......................................... 236
Convenience closing feature ............ 72
Convenience opening feature .......... 72 Important safety information ........... 71
Opening/closing .............................. 72
Problem (malfunction) ..................... 74
Resetting ......................................... 73
Reversing feature ............................. 71
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 200
SmartKey
Changing the battery ....................... 63
Changing the programming ............. 62
C
hecking the battery ....................... 63
Convenience closing feature ............ 73
Convenience opening feature .......... 72
Display message ............................ 188
Door central locking/unlocking ....... 60
Important safety notes .................... 60
KEYLESS-GO start function .............. 61
Loss ................................................. 65
Mechanical key ................................ 62
Overview .......................................... 60
Positions (ignition lock) ................. 103
Problem (malfunction) ..................... 65
Starting the engine ........................ 104
SMS
see also Digital Operator's Man-
ual .................................................. 200
Snow chains ...................................... 256
Sockets
General notes ................................ 214
Luggage compartment ................... 215
Sound
Switching on/off ........................... 201
Special seat belt retractor .................. 49
Specialist workshop ............................ 25
Speed, controlling
see Cruise control
Speedometer
Activating/deactivating the addi-
tional speedometer ........................ 162
Digital ............................................ 154
Segments ...................................... 151
Selecting the display unit ............... 161
SPEEDTRONIC
Display message ............................ 182
SPORT handling mode
Activating/deactivating ................... 56
Warning lamp ................................. 194
Index15

Engine
Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
;NThe yellow Check Engine warning lamp lights up while the engine is running.
There may be a malfunction, for example:
Rin the engine management
Rin the fuel injection system
Rin the exhaust system
Rin the ignition system
Rin the fuel system
The emission limit values may be exceeded and the engine may be in emergency
mode.
XHave the vehicle checked as soon as possible at a qualified specialist workshop.
In some states, you must immediately visit a qualified specialist workshop as soon as the yellow Check Engine warning lamp lights up. This is due to the legal require-
ments in effect in these states. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving.
8N The yellow reserve fuel warning lamp lights up while the engine is running.
The fuel level has dropped into the reserve range.
XRefuel at the nearest gas station.
8N The yellow reserve fuel warning lamp flashes while the vehicle is in motion.
In addition, the ;Check Engine warning lamp may light up.
The fuel filler cap is not closed correctly or the fuel system is leaking.
XCheck that the fuel filler cap is correctly closed.
XIf the fuel filler cap is not correctly closed: close the fuel filler cap.
XIf the fuel filler cap is closed:visit a qualified specialist workshop.
?NThe red coolant warning lamp lights up while the engine is running and the
coolant temperature gauge is at the start of the scale.
The temperature sensor for the coolant temperature gage is defective.
The coolant temperature is no longer being monitored. There is a risk of engine
damage if the coolant temperature is too high.
XPull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions. Do not continue driving under any circumstances.
XSecure the vehicle against rolling away (Ypage 119).
XConsult a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster195
On-board computer and displays
Z

The antifreeze concentrate/corrosion inhibitor
concentration in the engine cooling system
should:
Rbe at least 50%. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 †).
Rnot exceed 55% (antifreeze protection down
to -49‡[-45 †]). Otherwise, heat will not be
dissipated as effectively.
Mercedes-Benz recommends an antifreeze/
corrosion inhibitor concentrate in accordance
with MB Specifications for Service Products
310.1.
The coolant is checked with every maintenance
interval at a qualified specialist workshop.
iWhen the vehicle is first delivered, it is filled
with a coolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
iThe coolant is checked with every mainte-
nance interval at a qualified specialist work-
shop.
Filling capacities
ModelCapacity
All models15.0 US qt (14.2 l)
Windshield washer system
Important safety notes
GWARNING
Windshield washer concentrate could ignite if it comes into contact with hot engine compo-
nents or the exhaust system. There is a risk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
!Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or MB WinterFit. Unsuitable washer fluid could dam-
age the plastic lenses of the headlamps.
!Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked. Do not use distilled or de-ionized water, other-
wise, the level sensor may give a false reading.
At temperatures above freezing:
XFill the washer fluid reservoir with a mixture of
water and windshield washer fluid, e.g. MB
SummerFit.
Add 1 part MB SummerFit to 100 parts water.
At temperatures below freezing:
XFill the washer fluid reservoir with a mixture of
water and washer fluid, e.g. MB WinterFit.
For the correct mixing ratio refer to the infor-
mation on the antifreeze reservoir.
iAdd windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round.
Climate control system refrigerant
Important safety notes
The climate control system of your vehicle is fil-
led with refrigerant R ‑134a.
The instruction label regarding the refrigerant
type used can be found on the radiator cross
member.
!Only the refrigerant R ‑134a and the PAG oil
approved by Mercedes-Benz may be used.
The approved PAG oil may not be mixed with
any other PAG oil that is not approved for
R-134a refrigerant. Otherwise, the climate
control system may be damaged.
Service work, such as refilling with refrigerant or
replacing component parts, may only be carried
out by a qualified specialist workshop. All appli-
cable regulations must be adhered to, SAE
standard J639 included.
Always have work on the climate control system carried out at a qualified specialist workshop.
Service products and filling capacities285
Technical data
Z