Useful information
............................312
Important safety notes .....................312
Displays and operation .....................312
Menus and submenus ......................317
Display messages ............................. 335
Warning and indicator lamps in the instrument cluster ............................375 311On-board computer and displays
Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 28). Important safety notes
G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
while driving will distract you from traffic con-
ditions. You could then lose control of the
vehicle. There is a risk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure about the
surrounding conditions, pull over to a safe
location and make entries only while the vehi-
cle is stationary.
You must observe the legal requirements for
the country in which you are currently driving when operating the on-board computer.
PLUG-IN HYBRID vehicles only: G
WARNING
If the instrument cluster has failed or there is a malfunction, you may not know about
safety-related function restrictions. The oper- ating safety of your vehicle may be affected.
There is a risk of an accident.
Immediately stop the vehicle while paying
attention to the traffic conditions and consult
a qualified specialist workshop.
All vehicles, except PLUG-IN HYBRID vehi- cles: G
WARNING
If the instrument cluster has failed or mal-
functioned, you may not recognise function
restrictions relevant to safety. The operating
safety of your vehicle may be impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
If the operating safety of your vehicle is
impaired, park the vehicle safely as soon as
possible. Contact a qualified specialist work-
shop.
The on-board computer only shows messages
or warnings from certain systems in the mul- tifunction display. You should therefore make
sure your vehicle is operating safely at all
times.
For an overview, see the instrument cluster
illustration (Y page 34). Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, in the
displays and the controls in the vehicle inte-
rior can be adjusted using brightness control
knob :.
X Turn brightness control knob :up or
down.
If you turn the light switch (Y page 138) to
the T, ÃorL position, the 312
Displays and operationOn-board computer and displays
brightness will depend upon the brightness
of the ambient light.
i The light sensor in the instrument cluster
automatically controls the brightness of
the multifunction display.
In daylight, the displays in the instrument
cluster are illuminated. A dimming function
is not possible in daylight. Speedometer with segments
The speedometer is divided into segments on vehicles with DISTRONIC PLUS.
The segments in the speedometer indicate
which speed range is available.
R Cruise control activated (Y page 230):
The segments light up from the stored
speed to the type-tested maximum speed.
R Variable SPEEDTRONIC activated
(Y page 233):
The segments light up from the start of the
scale to the selected limit speed.
R DISTRONIC PLUS activated (Y page 236):
One or two segments in the set speed
range light up.
R DISTRONIC PLUS detects a vehicle in front
moving more slowly than the stored speed:
The segments between the speed of the
vehicle in front and the stored speed light
up. Rev counter
! Do not drive in the overrevving range.
Doing so will damage the engine.
The red band in the rev counter indicates the
engine's overrevving range.
The fuel supply is interrupted to protect the
engine when the red band is reached.
PLUG-IN HYBRID vehicles: when you select
the E-MODE operating mode, the display in
the instrument cluster switches from rev
counter to wattmeter (Y page 289). Outside temperature display
You should pay special attention to road con-
ditions when temperatures are around freez-
ing point.
Bear in mind that the outside temperature
display indicates the measured air tempera-
ture and not the road surface temperature.
The outside temperature display is in the mul- tifunction display (Y page 315).
Changes in the outside temperature are dis-
played after a short delay. Coolant temperature gauge
G
WARNING
If you open the bonnet while the engine is
overheating or while there is a fire in the
engine compartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is a danger of injury.
Allow an overheating engine to cool down
before opening the bonnet. If there is a fire in the engine compartment, leave the bonnet
closed and notify the fire brigade.
All vehicles except PLUG-IN HYBRID vehicles: the coolant temperature gauge is in the lower
section of the rev counter (Y page 34).
PLUG-IN HYBRID vehicles: the multifunction
display shows the coolant temperature in the
Coolant Coolant submenu (Y page 327).
At high outside temperatures and when driv-
ing uphill, the coolant temperature may rise
to the end of the scale.
Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 120 †. Displays and operation
313On-board computer and displays Z
R
Displaying the coolant temperature (PLUG-
IN HYBRID vehicles) (Y page 327)
R Displaying the AdBlue ®
level and range
(Y page 327) (BlueTEC vehicles only)
Displaying the AdBlue ®
level and range The
AdBlue
AdBlue menu is only available in BlueTEC
vehicles.
X Press òon the steering wheel to open
the menu list.
X Press :or9 on the steering wheel
to select the Service
Servicemenu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the AdBlue
AdBlue
submenu.
X Press ato confirm your selection.
The range and AdBlue ®
level appear in a bar
graph in the multifunction display.
Observe the information and notes on "Refu- elling" (Y page 207).
Displaying the coolant temperature The
Coolant
Coolant menu is only available in PLUG-
IN HYBRID vehicles.
Observe the notes on coolant temperature
(Y page 313).
X Press òon the steering wheel to open
the menu list.
X Press :or9 on the steering wheel
to select the Service
Service menu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the Coolant Coolant
submenu.
X Press ato confirm your selection.
The coolant temperature is shown in a bar
display. Settings menu
Introduction Depending on the equipment fitted in the
vehicle, you have the following options in the
Settings Settings menu:
R Changing assistance settings
(Y page 327)
R Changing HYBRID settings (PLUG-IN
HYBRID vehicles) (Y page 329)
R Changing head-up display settings
(Y page 330)
R Changing the light settings (Y page 331)
R Changing the instrument cluster settings
(Y page 332)
R Changing the vehicle settings
(Y page 333)
R Restoring the factory settings
(Y page 334)
Assistance submenu Traffic Sign Assist
You can activate or deactivate the warning
function of Traffic Sign Assist in the
Traffic Traffic
Sign Assist
Sign Assist menu. When the function is
activated, detected traffic signs and informa-
tion appear in the multifunction display for
five seconds.
X Press òon the steering wheel to open
the menu list.
X Press the :or9 button on the steer-
ing wheel to select the Settings Settingsmenu. Menus and submenus
327On-board computer and displays Z
and the
Lsymbol in the multifunction
display are shown in white.
X Press the abutton to save the setting.
If you switch on the Intelligent Light
Intelligent Light
System
System function, the following functions are
activated:
R Motorway mode
R Active light function
R Cornering light function
R Extended range foglamps
R Off-road lights
If you set the dipped-beam headlamps for
driving on the right/left, the multifunction
display shows the Inactive for left-
Inactive for left-
side traffic side traffic orInactive for right-
Inactive for right-
side traffic
side traffic display message in the
Lights
Lights submenu instead of the Intelli‐
Intelli‐
gent Light System
gent Light System function (Ypage 332).
This display message will only appear if the
setting for driving on the left/right is set
opposite to your vehicle's country version.
Further information on the Intelligent Light
System (Y page 141).
Setting the dipped-beam headlamps for
driving on the left/right
This function is only available on vehicles with
the Intelligent Light System.
You can use this function to switch between
symmetrical and asymmetrical dipped beam
(Y page 138).
X Press òon the steering wheel to open
the menu list.
X Press the :or9 button on the steer-
ing wheel to select the Settings Settingsmenu.
X Confirm by pressing aon the steering
wheel.
X Use : or9 to select the Lights
Lights
submenu.
X Press ato confirm. X
Using :or9, select the Dipped
Dipped
beams Setting for
beams Setting for function.
You will see the selected setting, right-
right-
side traffic
side traffic orleft-side traffic
left-side traffic.
X Press the abutton to save the setting.
If you change the setting, conversion does
not take place until the next time the vehi-
cle is stationary.
If you set the dipped-beam headlamps for
driving on the right/left, then motorway
mode and the extended range foglamps are
unavailable. These are only deactivated if the setting for driving on the left/right is set
opposite to your vehicle's country version.
A qualified specialist workshop can set the
dipped-beam headlamps for driving on the
left/right.
Instrument cluster submenu Selecting the distance unit
The
Display Display unit
unitSpeed-/odometer
Speed-/odometer func-
tion allows you to choose whether certain
displays appear in kilometres or miles in the
multifunction display.
X Press òon the steering wheel to open
the menu list.
X Press the :or9 button on the steer-
ing wheel to select the Settings Settingsmenu.
X Confirm by pressing aon the steering
wheel.
X Use : or9 to select the Instru‐
Instru‐
ment cluster
ment cluster submenu.
X Press ato confirm.
X Press :or9 to select the Display
Display
unit Speed-/odometer
unit Speed-/odometer function.
The current setting km
kmorMiles
Miles appears.
X Press the abutton to save the setting.
The selected unit of measurement for dis-
tance applies to the:
R digital speedometer in the Trip Tripmenu
R total distance recorder and the trip meter
R trip computer
R current consumption and the range 332
Menus and submenusOn-board computer and displays
R
navigation instructions in the Navi
Navimenu
R cruise control
R SPEEDTRONIC
R DISTRONIC PLUS with Steering Assist and
Stop&Go Pilot
R ASSYST PLUS service interval display
Selecting permanent display
United Kingdom: this function is unavailable.
This function is only available on PLUG-IN
HYBRID vehicles.
Using the Permanent display Permanent display function, you
can switch on the outside temperature or the
additional speedometer in the multifunction
display.
X Press òon the steering wheel to open
the menu list.
X Press :or9 on the steering wheel
to select the Settings
Settings menu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the Instru‐
Instru‐
ment cluster
ment cluster submenu.
X Press ato confirm.
X Using :or9, select the Perma‐
Perma‐
nent display
nent display function.
X Press ato confirm.
The current selection, Outside tempera‐
Outside tempera‐
ture
ture orDig. speedo [km/h]
Dig. speedo [km/h] , appears.
i The multifunction display shows the unit
in the additional speedometer inverse to
the speedometer unit in the instrument
cluster.
X To change the setting: pressaagain.
Switching the additional speedometer
on/off
United Kingdom: this function is unavailable.
The additional speedometer is always
switched on.
This function is not available in PLUG-IN
HYBRID vehicles.
The Digital speedo [km/h]
Digital speedo [km/h] function
allows you to choose whether the status area in the multifunction display shows the speed
digitally. The unit in the additional speedom-
eter is always inverse to the speedometer
unit.
X Press òon the steering wheel to open
the menu list.
X Press :or9 on the steering wheel
to select the Settings Settingsmenu.
X Confirm by pressing aon the steering
wheel.
X Press :or9 to select the Instru‐
Instru‐
ment cluster
ment cluster submenu.
X Press ato confirm.
X Using :or9, select the Digital
Digital
speedo [km/h]
speedo [km/h] function.
The current selection appears.
X To switch on/off: press theabutton
again.
Vehicle submenu Setting permanent SPEEDTRONIC
X Press òon the steering wheel to open
the menu list.
X Press the :or9 button on the steer-
ing wheel to select the Settings
Settingsmenu.
X Confirm by pressing aon the steering
wheel.
X Use : or9 to select the Vehicle
Vehicle
submenu.
X Press ato confirm.
X Using :or9, select the Limit
Limit
speed (winter tyres)
speed (winter tyres) function.
The current setting appears.
X Press ato confirm.
X Press :or9 to adjust permanent
SPEEDTRONIC in increments of ten ( 240
240
km/h
km/h to160 km/h
160 km/h). The Off
Offsetting
switches permanent SPEEDTRONIC off.
X Press the abutton to store the entry.
For further information on permanent SPEED- TRONIC (Y page 236). Menus and submenus
333On-board computer and displays Z
Safety systems
Display messages
Possible causes/consequences and
M
MSolutions !÷
currently unavail‐ currently unavail‐
able See Owner's able See Owner's
Manual Manual ABS (Anti-lock Braking System), ESP
®
(Electronic Stability Pro-
gram), BAS (Brake Assist), PRE‑SAFE ®
, HOLD function, hill start
assist, ESP ®
trailer stabilisation, Crosswind Assist, adaptive brake
lights, STEER CONTROL, Active Lane Keeping Assist and Active
Blind Spot Assist are temporarily unavailable.
BAS PLUS with Cross-Traffic Assist, PRE‑SAFE ®
Brake, PRE‑ SAFE®
PLUS and COLLISION PREVENTION ASSIST PLUS may also have
failed.
In addition, the ÷and! warning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
For example, the on-board voltage may be insufficient.
G WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-ted. The braking distance may increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Drive on carefully.
Carefully drive on a suitable stretch of road, making slight steer-
ing movements at a speed above 20 km/h.
If the display message disappears, the functions mentioned
above are available again.
If the multifunction display still shows the display message:
X Drive on carefully.
X Consult a qualified specialist workshop immediately. !÷
inoperative See inoperative See
Owner's Manual Owner's Manual ABS, ESP
®
, BAS, PRE‑SAFE ®
, HOLD function, hill start assist,
ESP ®
trailer stabilisation, Crosswind Assist, adaptive brake lights,
STEER CONTROL, Active Lane Keeping Assist and Active Blind
Spot Assist are unavailable due to a malfunction.
BAS PLUS with Cross-Traffic Assist, PRE‑SAFE ®
Brake, PRE‑SAFE ®
PLUS and COLLISION PREVENTION ASSIST PLUS may also have
failed.
In addition, the J,÷and! warning lamps may light up
in the instrument cluster. 336
Display messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec- ted. The braking distance may increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Drive on carefully.
X Consult a qualified specialist workshop immediately. ÷
inoperative See inoperative See
Owner's Manual Owner's Manual ESP
®
, BAS, PRE ‑SAFE®
, HOLD function, hill start assist,
ESP ®
trailer stabilisation, Crosswind Assist, adaptive brake lights,
STEER CONTROL, Active Lane Keeping Assist and Active Blind
Spot Assist are unavailable due to a malfunction.
BAS PLUS with Cross-Traffic Assist, PRE‑ SAFE®
Brake, PRE ‑SAFE®
PLUS and COLLISION PREVENTION ASSIST PLUS may also have
failed.
The ÷ warning lamp also lights up in the instrument cluster.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above.
The braking distance may thus increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Drive on carefully.
X Consult a qualified specialist workshop immediately. Display
messages
337On-board computer and displays Z