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Starting a new lap
:RACETIMER
;Fastest lap time (best lap)
=Lap
XPressato confirm New Lap.
iIt is possible to store a maximum of sixteen
laps. The 16th lap can only be completed with
Finish Lap
.
Stopping the RACETIMER
XPress the %button on the steering wheel.
XConfirm Yeswitha.
The RACETIMER is interrupted if you stop the
vehicle and turn the SmartKey to position 1
(
Ypage 112) in the ignition lock. If you turn the
SmartKey to position 2or 3(Ypage 112) and
then press ato confirm Start
, timing is
continued.
Resetting the current lap
XStop the RACETIMER (Ypage 183).
XPress the =or; button to select
Reset Lap.
XPress ato reset the lap time to "0".
Deleting all laps
If you switch off the engine, the RACETIMER is
reset to "0" after 30 seconds. All laps are
deleted.
You cannot delete individual stored laps. If you
have stopped 16 laps, the current lap does not
have to be reset.
XReset the current lap (Ypage 183).
XPress ato confirm Reset.
Reset Race Timer?appears in the multi-
function display.
XPress the :button to select Yesand press
the a button to confirm.
All laps are deleted.
Overall statistics
:RACETIMER overall evaluation
;Total time driven
=Average speed
?Distance covered
AMaximum speed
This function is shown if you have stored at least
one lap and stopped the RACETIMER.
XPress =or; on the steering wheel to
select the AMGmenu.
XPress the9button repeatedly until the
overall evaluation is shown.
Lap statistics
:Lap
;Lap time
=Average lap speed
?Lap length
ATop speed during lap
Menus and submenus183
On-board computer and displays
Z
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This function is only available if you have stored
at least two laps and have stopped the RACE-
TIMER.
XPress=or; on the steering wheel to
select the AMGmenu.
XPress the9button repeatedly until the lap
evaluation is shown.
Each lap is shown in a separate submenu. The
fastest lap is indicated by flashing symbol :.
XPress the9or: button to select a dif-
ferent lap evaluation.
Display messages
Introduction
General notes
Display messages appear in the multifunction
display.
Display messages with graphic displays may be
shown in simplified form in the Operator's Man-
ual and may differ from the messages shown in
the multifunction display.
Please respond in accordance with the display
messages and follow the additional notes in this Operator's Manual.
Certain display messages are accompanied by
an audible warning tone or a continuous tone.
When you stop and park the vehicle, please
observe the notes on:
RHOLD function (Ypage 157)
RParking (Ypage 130)
Hiding display messages
XPress the aor% button on the steering
wheel to hide the display message.
The display message is cleared.
Display messages with a high priority are shown
in red.
You cannot hide display messages of the highest
priority. The multifunction display shows these
messages continuously until the causes for the
messages have been remedied.
Message memory menu
The on-board computer saves certain display
messages. You can call up the display messages
in the message memory.
XPress the =or; button on the steering
wheel to select the Serv.menu.
If there are display messages, the multifunc-
tion display shows 2 Messages
, for example.
XPress the9or: button to select the
entry, e.g. 2 Messages.
XPressato confirm.
XPress the 9or: button to scroll
through the display messages.
When the ignition is switched off, all display
messages are deleted, apart from some high-
priority display messages. Once the causes of
the high-priority display messages have been
rectified, the corresponding display messages
are also deleted.
184Display messages
On-board computer and displays
Page 187 of 302

Safety systems
Display messagesPossible causes/consequences andMSolutions
!÷
ABS, ESP DefectiveVisit Workshop
ABS (Anti-lock Braking System), ESP®(Electronic Stability Program),
BAS (Brake Assist), the HOLD function, hill start assist and ESP®trailer
stabilization are temporarily unavailable.
BAS and the adaptive brake lights may also have failed.
In addition, the ÷and! warning lamps light up in the instru-
ment cluster.
Possible causes are:
Rself-diagnosis is not yet complete.
Rthe on-board voltage may be insufficient.
GWARNING
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 affected.
The braking distance in an emergency braking situation can increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XCarefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned above are available again.
If the display message continues to be displayed:
XDrive on carefully.
XVisit a qualified specialist workshop.
!÷
Currently Unavaila‐ble See Operator'sManual
ABS, ESP®, BAS, the HOLD function, hill start assist and ESP®trailer
stabilization are unavailable due to a malfunction.
BAS and the adaptive brake lights may also have failed.
In addition, the ÷and! warning lamps light up in the instru-
ment cluster.
GWARNING
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 affected.
The braking distance in an emergency braking situation can increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
Display messages185
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Z
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Display messagesPossible causes/consequences andMSolutions
÷
ESPDefectiveVisitWorkshop
ESP®,BAS, th eHOLD function ,hill start assist and ES P®trailer sta-
bilization are unavailable due to amalfunction .
BA Sand th eadaptive brak elights may also hav efailed.
The ÷ warning lamp also lights up in th einstrumen tcluster.
The self-diagnosis function might no tbe complete, for example.
GWARNIN G
The brak esystem continues to function normally, but without th e
function slisted above.
The braking distanc ein an emergenc ybraking situation can thus
increase.
If ES P
®is no toperational, ES P®is unable to stabiliz eth evehicle.
There is an increased ris kof skiddin gand an accident.
XCarefully drive asuitable distance, making slight steering move-
ments at aspeed abov e12 mph (20 km/ h).
If the display message disappears, the functions mentioned above are available again.
If the display message continues to be displayed:
XDrive on carefully.
XVisit a qualified specialist workshop.
!
÷J
ABS,ESP,EBDDefec‐tive Visit Workshop
EBD (electronic brake force distribution), ABS, ESP®, BAS, the HOLD
function, hill start assist and ESP®trailer stabilization are unavailable
due to a malfunction.
BAS and the adaptive brake lights may also have failed.
In addition, the ÷,Jand! warning lamps light up in the
instrument cluster and a warning tone sounds.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore lock
if you brake hard, for example.
The steerability and braking characteristics may be severely affected.
The braking distance in an emergency braking situation can increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
F(USA
only)
!(Canada
only)
Release Park. Brake
You are driving with the parking brake applied. A warning tone also
sounds.
XRelease the parking brake.
186Display messages
On-board computer and displays
Page 189 of 302

Display messagesPossible causes/consequences andMSolutions
$(USA
only)
J( Canada
only)
Check Brake Fluid
Level
There is no tenough brak efluid in th ebrak efluid reservoir .In addition ,
th e$ (USAonly)/J (Canada only) warning lamp lights up in th e
instrumen tcluste rand awarning tone sounds.
GWARNIN G
The braking effec tmay be impaired.
There is aris kof an accident.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions. Do no tcontinu edrivin g
under any circumstances.
XSecur eth evehicl eagainst rollin gaway (Ypage 130).
XConsult aqualified specialist workshop .
XDo notadd brak efluid .This does no tcorrec tth emalfunction .
#
CheckBrakePadWear
The brak epads/linings hav ereached their wear limit.
XVisit aqualified specialist workshop .
G
mbrace Inoperative
USA only:on eor mor emain function sof th embrace system are mal-
functioning .
Canad aonly :on eor mor emain function sof th eTELE AI Dsystem are
malfunctioning .
XUSA only:hav eth embrace system checke dat aqualified specialist
workshop .
XCanadaonly :hav eth eTele AI Dsystem checke dat aqualified spe -
cialist workshop .
6
SRSMalfunctionSer‐viceRequired
The restrain tsystem is faulty. The 6warning lamp also lights up in
th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbe triggered .
There is an increased ris kof injury.
XVisit aqualified specialist workshop .
Fo rfurther information about th erestrain tsystem, see (
Ypage 34).
6
Front Lef tMalfunc‐tio nServic eRequiredorFron tRight MalfunctionServic eRequired
The restrain tsystem has malfunctioned at th efron ton th elef tor right .
The 6 warning lamp also lights up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbe triggered .
There is an increased ris kof injury.
XVisit aqualified specialist workshop .
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Display messagesPossible causes/consequences andMSolutions
6
RearLef tMalfunc‐tio nServic eRequiredorRea rRight MalfunctionServic eRequired
The rear left-han dor right-hand restrain tsystem has malfunctioned.
The 6 warning lamp also lights up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbe triggered .
There is an increased ris kof injury.
XVisit aqualified specialist workshop .
6
RearCenterMalfunc‐tionServic eRequired
The rear center restrain tsystem has malfunctioned. The 6warning
lamp also lights up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbe triggered .
There is an increased ris kof injury.
XVisit aqualified specialist workshop .
6
LeftSid eCurtai nAirbag MalfunctionServiceRequiredorRigh tSideCurtai nAirbagMalfunctionServiceRequired
There is amalfunction in th eleft-han dor right-hand window curtai nair
bag. The 6warning lamp also lights up in th einstrumen tcluster.
GWARNIN G
The lef tor right window curtai nair bag may either be triggered unin-
tentionally or, in th eevent of an accident, may no tbe triggered .
There is an increased ris kof injury.
XVisit aqualified specialist workshop .
188Display messages
On-board computer and displays
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Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Disabled SeeOperator' sManual
ABabySmart ™compatible child restrain tsystem is installed on th e
front-passenger seat .
The 45indicator lamp also lights up.
The front-passenger air bag is therefore disabled.
Further information on BabySmart™ (
Ypage 50).
FrontPassengerAir‐bag Enabled SeeOperator's Manual
The 45indicator lamp does not remain lit if a special Baby-
Smart™-compatible child restraint system has been installed on the
front-passenger seat.
The BabySmart™ system is malfunctioning.
GWARNING
The front-passenger front air bag can be triggered unintentionally in
the event of an accident.
There is a risk of an accident.
XMake sure there is nothing between the seat cushion and the child
seat.
XCheck for correct installation of the child restraint system.
XIf the 45indicator lamps do not light up, have the Baby-
Smart™ system checked as soon as possible at a qualified special-
ist workshop.
Do not transport a child on the front-passenger seat until the air bag
deactivation system has been repaired.
Lights
i
Display messages about LEDs:
This display message will only appear if all LEDs have failed.
Display messagesPossible causes/consequences and MSolutions
b
CheckLeftLowBeamorCheck Right LowBeam
The left or right-hand low-beam headlamp is defective.
XVisit a qualified specialist workshop.
b
Check Trailer LeftTail LamporCheckTrailer Right TailLamp
The left or right-hand trailer tail lamp is faulty.
XCheck whether you are permitted to replace the bulb yourself.
or
XVisit a qualified specialist workshop.
b
Check Trailer LeftTurn Signalor CheckTrailer Right TurnSignal
The left or right-hand trailer turn signal lamp is defective.
XCheck whether you are permitted to replace the bulb yourself.
or
XVisit a qualified specialist workshop.
Display messages189
On-board computer and displays
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Display messagesPossible causes/consequences andMSolutions
b
CheckTrailerBrakeLamp
The trailer brak elamp is defective.
XChec kwhether you are permitte dto replace th ebulb yourself .
or
XVisit aqualified specialist workshop .
b
Check RearLef tTurnSignalor
Check Rea rRight
Tur nSignal
The rear left-han dor rear right-hand tur nsignal is defective.
XChec kwhether you are permitte dto replace th ebulb yourself
(Ypage 93) .
or
XVisit aqualified specialist workshop .
b
Check Front LeftTurnSignalor
Check Front Right
Tur nSignal
The fron tleft-han dor fron tright-hand tur nsignal is defective.
XChec kwhether you are permitte dto replace th ebulb yourself
(Ypage 93) .
or
XVisit aqualified specialist workshop .
b
Check LeftMirrorTur nSignalor
Check Right Mirror
Tur nSignal
The tur nsignal in th eleft-han dor right-hand exterio rmirror is defec -
tive.
XVisit aqualified specialist workshop .
b
Check Center BrakeLamp
The high-mounte dbrak elamp is faulty.
XVisit aqualified specialist workshop .
b
Check LeftBrakeLam porCheck RightBrake Lam p
The leftor right-hand brak elamp is defective.
XReplac eth ebulb (Ypage 92) .
b
Check Lef tHig hBeamorCheck RightHig hBea m
The lef tor right-hand high beam is defective.
XVisit aqualified specialist workshop .
b
LicensePlate Lam p
There isashort circuit in th eLE Dlamps. The LEDs hav ebeen switched
off .
XVisit aqualified specialist workshop .
b
RearFog Lam p
The rear fog lamp is defective.
XCheckwhether you are permitte dto replace th ebulb yourself
(Ypage 93) .
or
XVisit aqualified specialist workshop .
190Display messages
On-board computer and displays