
1
Speedom eter →
234
2 ÷ ESP®
→
482
3 #! Turn signal light →
11 6
4 Ð Steering assis tance malfunction →
490
5 Multifunction displ ay →
237
6 ! ABS malfunction →
482
7 ; Engine diagnosis →
492
8 Rev counter →
234
9 % Diesel engine: preglow
A ! Electric parking brake applied (red)
B J Brakes (red) →
482
C # Electrical fault →
492
D · Distance warning →
489
E ? Coolant too hot/cold →
492
F Coolant temp erature display →
234 G
J Brakes (yellow) →
482
H ! Electric pa rking brake (yellow)
I 6 Restra int sy stem →
28
J ü Seat belt is not fastened →
488
K j Trailer hit chis not operational or is swivel‐
ling →
490
L T Standing lights →
11 4
M Fuel le vel display
8 Fuelreser vewith fuel filler flap location
indicator →
492
N K Main beam →
11 6
O L Dipped beam →
11 4
P R Rear fog light →
11 5
Q h Tyre pressure monitoring sy stem →
495
R å ESP®
OFF →
482 At
aglance – Warning and indicator lamps 9

1
Speedom eter →
234
2 ü Seat belt is not fastened →
488
3 #! Turn signal light →
11 6
4 Multifunction display →
237
5 Rev counter →
234
6 å ESP®
OFF →
482
÷ ESP®
→
482
7 K Main beam →
11 6
L Dipped beam →
11 4
T Standing lights →
11 4
8 ? Coolant too hot/cold →
492
9 Coolant temp erature display →
234
A · Distance warning →
489
B Ð Steering assis tance malfunction →
490
C # Electrical fault →
492 D
J Brakes (red) →
482
E Fuel le vel display
F 8 Fuelreser vewith fuel filler flap location
indicator →
492
G R Rear fog light →
11 5
H 6 Restra int sy stem →
28
I % Diesel engine: preglow
J ; Engine diagnosis →
492
K J Brakes (yellow) →
482
L ! Electric pa rking brake applied (red)
M h Tyre pressure monitoring sy stem →
495
N ! ABS malfunction →
482
O ! Electric pa rking brake (yellow)
P j Trailer hit chis not operational or is swivel‐
ling →
490 At
aglance – Warning and indicator lamps 11

Problem
Possible causes/consequences and M
MSolutions
R The key is faulty. #
Activate KEYLESS-GO . #
Check the battery using the battery check lamp and replace if necessary . #
Use the emer gency keyto lock or unlock theve hicle . #
Have theve hicle and keych ecked at a qualified specialist workshop. Switching
the automatic locking feature
on/off The
vehicle is loc ked automatically when the
ignition is switched on and the wheels are turn‐
ing fast erthan walking pace. #
Todeactivate: press and hold button 1for
appr oximately five seconds until an acoustic
signal sounds. #
Toactivate: press and hold button 2for
appr oximately five seconds until an acoustic
signal sounds.
Danger of being loc ked out when the function is
activated:
R Ifth eve hicle is being tow star ted/pushed.
R On a roller dynamome ter. 66
Opening and closing

Operating
the light combination switch 1
Main beam
2 Turn signal light, right
3 Headlamp flashing
4 Turn signal light, left #
Pull or push the combination switch in the
re leva nt di rection following the ar row. Switching on
the main beam manually #
Vehicles with Adaptive Highbeam Assist
Plus: Turn the light switch totheL posi‐
tion. R Press the combination switch be yond the
pressure point in the direction of
ar ro w 1.
When the main beam is activated, the indicator
lamp for dipped beam is deactivated and
re placed bythe indicator lamp forth e main
beam. #
Toswitch off the main beam: movethe
combination switch ba cktoits starting posi‐
tion. #
Toindicate briefl y:press the combination
switch briefly up tothe pressure point in the
direction of ar row2or4.
The cor responding turn signal light flashes
th re e times. #
Toindicate for a duration: pressthe combi‐
nation switch be yond the pressure point in
th e direction of ar row2or4. Ac
tivating/deactivating the hazard warning
light #
Press button 1.
The hazard warning light switches on automati‐
cally if:
R The airbag has been deplo yed.
R The vehicle brakes sharply from a speed of
more than 70 km/h toast andstill. 11 6
Light and sight

re
sponsible forth e dis tance totheve hicle in
front, forve hicle speed, for braking in good time
and forst ay ing in lane.
If all activation conditions are met, you can acti‐
va te Dis tance Pilot DISTRONIC du ring a jou rney
or while stationar y.When Dis tance Pilot
DISTRONIC is acti vated, a speed is stored which
th e driver can increase or reduce at any time.
The speed can be adjus ted between 20 km/h
and 200 km/h.
Ve hicles with the Driving Assistance Pack‐
age: The speed can be adju sted between
20 km/h and 210 km/h.
Ve hicles with Driving Assistance Package,
Pa rking Pilot and COMAND Online: Upto30
seconds af terst opping, theve hicle automatically
fo llo ws theve hicle ahead without the inter ven‐
tion of the driver. This is only possible if theve hi‐
cle is tr avelling on a mo torw ay or a high-speed
major road. If an obs tacle is de tected in front of
th eve hicle during the driving-off procedure, a
ta ke ove rwa rning is given. Acceleration is
re duced, the driver is given a visual and acoustic
wa rning and must stop theve hicle before reach‐
ing the obs tacle or take evasive action. Ve
hicles with the Driving Assistance Pack‐
age: In conjunction with navigation sy stems, Dis‐
ta nce Pilot DISTRONIC pr events prohibi tedove r‐
ta king on theright at speeds over 80 km/h in
ri ght-hand traf fic and overtaking on the left in
left-hand tra ffic on mo torw ays and high-speed
major roads.
Dis tance Pilot DISTRONIC uses information from
th e navigation sy stem torespond tocer tain traf‐
fi c situations:
R Roundabouts
R T junctions
R Motorw ay ex its
R Tollboo th
Even if theve hicle in front lea vesth e de tection
ra nge in these situations, Dis tance Pilot
DISTRONIC temp orarily maintains the cur rent
driving speed and does not accele rate.
If yo u activate the turn signal indicator tochange
lanes, theve hicle will accelerate more briskly to
th e set speed under thefo llowing conditions:
R Distance Pilot DISTRONIC is acti vated.
R Ifth e driving speed is higher than 70 km/h. R
Ifth e driven speed drops below thestored
speed.
R Ifth e tra ffic situation in theove rtaking lane
permits a safe lane change.
Ve hicles with Driving Assistance Package
and Traf fic Sign Assis t:Distance Pilot
DI STRO NIC also has the Speed Limit Pilot func‐
tion. This function can be confi gured inthe mul‐
timedia sy stem. If a change in the speed limit is
de tected and Dis tance Pil otDISTRONIC is acti va‐
te d, Dis tance Pilot DISTRONIC assumes this new
speed.
The driven speed is adap ted when theve hicle is
le ve l with the tra ffic signs. In the case of signs
indicating entry into an urban area, the speed is
adap ted beforehand. The speed limit display in
th e Instrument Display is alw ays update d when
th eve hicle is le vel with the tra ffic sign.
If th e Dis tance Pilot DISTRONIC has been put
into passi vemode bypressing the accelera tor
pedal, only speed limits which are higher than
th e set speed are adop ted. 184
Driving and pa rking

case. During
the transition from the active to
passive status, theè symbol is shown as
enlar ged and flashes yello w. Once the sy stem is
passive theè symbol is shown as gr eyinthe
multifunction displa y.
The sy stem may be impaired or may not function
in thefo llowing ins tances:
R Ifth ere is poor visibility, e.g. due toinsuf fi‐
cient illumination of thero ad, or due tosno w,
ra in, fog or spr ay.
R Ifth ere is glare, e.g. from oncoming traf fic,
di re ct sunlight or reflection from other vehi‐
cles (e.g. if the car riag ewa y is wet).
R Ifth e windscreen is dirty, mis ted up, dam‐
aged or co vered, for ins tance byast icke r,in
th e vicinity of the camera.
R If no, or se veral, unclear lane markings are
present for one lane, e.g. in a construction
area.
R Ifth e lane markings are wornaw ay, dark or
co vered up, e.g. bydirt or sno w.
R The dis tance totheve hicle in front is too
small and the lane markings thus cannot be
de tected. R
Ifth e lane markings change quickl y,e.g.
lanes branch off, cross one ano ther or
mer ge.
R The car riag ewa y is nar rowand winding.
R Ifth ere are highly variable shade conditions
on the car riag ewa y.
R Ifth ere are obs tacles such as traf fic guid‐
ance posts on the lane or projecting out into
th e lane.
The sy stem does not pr ovide assis tance in the
fo llowing conditions:
R Onvery sharp bends.
R When towing a trailer.
R Ifyo u actively change lane without swit ching
on the turn signal indicator.
R Ifyo u swit chon the turn signal indicator and
th e conditions for activating Active Lane
Change Assi stare not fulfilled.
Ac tivating Steering Pilot
Requ irements:
R ESP ®
must be switched on, but not inter ven‐
ing. R
Distance Pilot DISTRONIC mu stbe activated. #
If indicator lamp 1is off: press button 2.
Fu nction of Active Lane Change Assi st
St eering Pilot is only an aid. You are responsible
fo rth e dis tance totheve hicle in front, forve hi‐
cle speed, for braking in good time and forst ay‐
ing in lane. Before changing lanes, make sure Driving and parking
191

th
at the neighbouring lane is free (shoulder
view).
% The availability of thefo llowing function is
countr y-dependent.
St eering Pilot remains active even if the turn sig‐
nal indicator is switched on. Steering Pilot then
assists the driver when changing lanes byapply‐
ing steering torques toinitiate the lane change.
Assis tance when changing lanes is pr ovided if all
th efo llowing conditions are me t:
R You are driving on a mo torw ay or high-speed
multi-lane major road with multiple lanes in
th e direction of tr avel.
R The neighbouring lane is free and separated
by a broken lane marking.
R The driven speed is between 80 km/h and
18 0 km/h.
R The turn signal indicator is switched on for
longer than two seconds.
If th e sy stem is impaired, Active Lane Change
Assi stmay be inter rupte d. If an inter ruption
occurs, display 1appears in the multifunction display along with a
warning tone prom pting you
to take control of theve hicle. Ste
ering and contact de tection
St eering Pilot requ ires you as the driver, tokeep
yo ur hands on thesteering wheel at all times so
th at you are able tointer vene at any time tocor‐
re ct the course of theve hicle and keep it in lane.
The driver must expect a change from active to
passive mode or vice versa at any time.
If yo u are not steering yourself or if you take
yo ur hands off thesteering wheel for a pro‐
longed period of time, the sy stem will, depend‐
ing on the situation, firs t alert you with a visual
wa rning. 1appears in the multifunction displa y.If
yo u are still not steering theve hicle yourself or
if yo u ha venot take n hold of thesteering wheel,
a wa rning tone sounds in addition tothewa rning
message toremind youto take control of the
ve hicle.
The warning message does not appear or disap‐
pears if one of thefo llowing conditions are me t:
R The driver steers theve hicle.
R The driver presses a steering wheel button or
operates Touch Control.
Fu nction of Active Eme rgency Stop Assist
If th e driver continues toigno rethe acoustic
wa rning of theAc tive Lane Change Assi st, Dis‐
ta nce Pilot DISTRONIC reduces the speed. If the
driver still does not respond, theve hicle is decel‐
erated in stages toast andstill.
The driver can cancel the deceleration at any
time byper form ing one of thefo llowing actions:
R Steering
R Braking or accelerating
R Pressing a steering wheel button or operat‐
ing Touch Control 19 2
Driving and pa rking

Blind Spot Assi
stand Active Blind Spot
Assi st Fu
nction of Blind Spot Assist and Active
Blind Spot Assi st
Blind Spot Assi stuses two lateral, rear-facing
ra dar sensors tomonitor the area up to40 m
behind your vehicle and 3 m directly next to your
ve hicle.
If a vehicle is de tected at speeds ab ove appr ox‐
imately 12km/h and this vehicle subsequently
enters the monitoring range di rectly next to your
ve hicle, thewa rning lamp in the outside mir ror
lights up red.
If a vehicle is de tected close to yourvehicle in
th e lateral monitoring range and you swit chon
th e turn signal indicator in the cor responding
direction, a warning tone sounds once. The red
wa rning lamp in the outside mir rorflashes. If the
turn signal indica torre mains on, all other de tec‐
te dve hicles are indicated only bytheflashing of
th ere dwa rning lamp.
If yo uove rtake a vehicle quickl y,no warning is
given. &
WARNING Risk of accident despi teBlind
Spot Assi st
Blind Spot Assi stdoes not react tovehicles
approaching and overtaking you at a greatly
di fferent speed.
As a result, Blind Spot Assist cannot warn
drivers in this situation. #
Alw ays pay careful attention tothe traf‐
fi c situation and maintain a safe dis‐
ta nce at the side of theve hicle. Blind Spot Assist and
Active Blind Spot Assi st
are on lyaids. They may failto detect some vehi‐
cles and are no substitute for attentive driving.
Alw ays ensure that there is suf ficient di stance to
th e side forot her road users and obs tacles.
Sy stem limitations
The de tection capability of Blind Spot Assi stcan
be restricted in thefo llowing situations:
R Ifth e sensors are dirty or co vered.
R When there is poor visibility, e.g. due tofog,
heavy rain, snow or spr ay. R
If nar rowvehicles are within the monitoring
ra nge, e.g. bicycles.
Wa rnings may be issued in er ror when driving
close tocrash ba rriers or similar solid lane bor‐
ders. Warnings may be inter rupte d when driving
alongside long vehicles, forex ample lor ries, for a
prolonged time.
Blind Spot Assist is not operational when reve rse
ge ar is engaged.
Brake application of Active Blind Spot Assi st
If Ac tive Blind Spot Assi stdetects a risk of a side
impact in the monitoring range, a cou rse-cor‐
re cting brake application is car ried out. This is
designed tohelp youavo id a collision.
The course-cor recting brake application is availa‐
ble in the speed range between appr oximately
30 km/h and 200 km/h. &
WARNING Risk of accident despi te
brake application of Active Blind Spot
Assi st
A cou rse-co rrecting brake application cann ot
alw ays pr event a collision. 222
Driving and parking