Page 65 of 310

If ABS is malfunctioning, theòwarning lamp
(Ypage 221) lights up whil ethe engine is run-
ning and the display shows amessage:
Ron vehiclesw ithoutsteering wheel buttons
(Ypage 189)
Ron vehiclesw ith steering wheel buttons
(Ypage 203)
BAS, Hill Start Assist and ESP®and its driving
safety systems and other driving systems also
fail .Observe the notes on the òwarning
lamp and the display messages.
Braking
If ABS intervenes when braking, you wil lfeel a
pulsating in the brake pedal.
The pulsating brake pedalc an be an indication
of hazardous road conditions and functions as a
reminder to take extra care whiled riving.
XIf ABS intervenes:continue to depresst he
brake pedalw ith force until the braking sit-
uatio niso ver.
XTo make afull brake application: depress
the brake pedalw ith full force.
BAS (Brake Assist System)
General notes
BAS operates in emergency braking situations.
If you depresst he brake pedalq uickly, BAS
automatically boosts the braking force, thus
shortening the stopping distance.
Important safety notes
Observe the important safety guidelines for the
driving safety system (Ypage 62).
GWARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased .There is arisk of an accident.
In an emergency braking situation, depress
the brake pedalw ith full force. ABS prevents
the wheel sfrom locking.
If BAS is malfunctioning, the ÷warning lamp
lights up whil ethe engine is running
(
Ypage 221) and the display shows amessage:
Ron vehiclesw ithoutsteering wheel buttons
(Ypage 193)
Ron vehiclesw ith steering wheel buttons
(Ypage 207)
Braking
XKeep the brake pedalf irmly depressed until
the emergency braking situation is over.
ABS prevents the wheel sfrom locking.
The brakes willf unction as usual once you
release the brake pedal. BAS is deactivated.
EBD (electroni cbrake force distribu-
tion)
General notes
EBD monitors and controls the brake pressure
to the rear wheels. This enables EBD to improve handling during braking.
Important safety notes
Observe the important safety guidelines for the
driving safety system (Ypage 62).
GWARNING
If EBD is malfunctioning, the rear wheelsc an
lock, e.g. under full braking. This increases the
risk of skidding and an accident.
You shoul dtherefore adapt you rdriving style
to the different handling characteristics. Have
the brake system checked at aqualifieds pe-
cialist workshop.
If EBD is malfunctioning, the $warning lamp
(
Ypage 220) lights up whil ethe engine is run-
ning and the display shows amessage.
Ron vehiclesw ithoutsteering wheel buttons
(Ypage 192)
Ron vehiclesw ith steering wheel buttons
(Ypage 206)
Other driving systems and driving safety sys-
tems then also fail.
Driving safety systems63
Safety
Z
Page 66 of 310

ESP®(Electronic Stability Program)
General notes
ESP®monitors driving stabilitya nd detectsa
tendenc yofthevehicle to understeer or over-
steer (skidding) in good time. If ESP
®detects
that th evehicle is deviatin gfromt hedirection
desired by th edriver, oneorm orew heels are
braked to stabilizet hevehicle .The engine out-
put is also modified to keep th evehicle on the
desired course within physical limits. ESP
®can
also stabilizet hevehicle durin gbraking.
ESP
®also monitors traction,i .e.p ower trans-
mission between th etires and th eroad surface.
The integrate dtraction control support syou
when pullinga way or acceleratin gonwet,slip-
pery or slickr oads. Should th edrivew heels spin,
traction control brakes them individually. In
addition,g reaterdrivet orque is transmitte dto
th ew heel or wheels with traction.Ift raction on
th er oad surface is no tsufficient ,even ESP
®will
no tallow you to pull away without difficulty. The
type of tires and total weightoft hevehicle as
well as th egradientoft heroad also play acru-
cial role .Tractio ncontrol remains active if you
deactivate ESP
®.
If the h warning lamp in th einstrumen tclus-
te rg oes out before beginnin gthe journey, ESP
®
is automaticall yactive.
The h warning lamp in th einstrumen tcluster
flashes when ESP
®intervenes:
XDo no tdeactivate ESP®unde rany circum-
stances.
Xwhen driving off ,apply as little throttle as
possible.
Xadapt your speeda nd driving style to th epre-
vailin groad conditions.
Important safety notes
Observ ethe important safety guidelines for the
driving safety system (Ypage 62).
GWARNING
If ESP
®is malfunctionin gitwill notprovide
any vehicle stabilization. Thereisani ncreased
risk of skiddingorofana ccident.
Exercise caution when continuing to drive.
Hav eESP
®checked at aqualified specialist
workshop.
!Do no trun th evehicle on aroller dynamom-
eter (e.g. for performanc etests) .Ifyou must
operate th evehicle on aroller dynamometer,
please consult aqualified specialist workshop
in advance. You coul dotherwise damag ethe
driv etrain or th ebrak esystem.
If ESP
®is malfunctioning, the hwarning
lamp (Ypage 221) lightsupc ontinuously while
th ee ngine is runnin gand th edisplay showsa
message.
Ron vehicle swithout steering wheel buttons
(Ypage 193)
Ron vehicle swith steering wheel buttons
(Ypage 207)
ESP®is deactivate diftheå warning lamp in
th ei nstrumentc lusterislit when th eengine is
running.
Only use wheels with th erecommended tire
sizes. Only then will ESP
®function properly.
Deactivating/activatin gESP®
GWARNING
If you deactivate ESP
®,E SP®no longer sta-
bilizes th evehicle .Thereisani ncreased risk
of skiddinga nd an accident.
Only deactivate ESP
®in th esituations descri-
bed in th efollowing.
It may be best to deactivate ESP
®in th efollow-
ing situations:
Rwhen usings nowc hains
Rin deep snow
Ron sandorg ravel
Activate ESP®as soon as th esituations descri-
bed abovenol onger apply. Otherwise, ESP®
assistance for stabilizing th evehicle will remain
significantly reduced, even if th evehicle starts
to skid.
If you deactivate ESP
®:
Rthe å warning lamp in th einstrumen tclus-
te rlightsu p.
Rthe÷ warning lamp in th einstrumen tclus-
te rf lashes if th ewheels are spinning.
RESP®assistance for stabilizing th evehicle in
th el ower speedr ange up to approximately
37 mph (60 km/h) is significantly reduced.
Rengine torque is no longer limited and the
driv ewheels are able to spin
64Driving safety systems
Safety
Page 67 of 310

The spinningofthe wheels results in acutting
action for better traction on loose surfaces.
RTraction control is still activated
RESP®still provides support when you brake.
Dependin gonthe equipment in the vehicle, you
can activate or deactivate ESP
®when the
engine is runnin gbyusing the åbutton or by
using the on-board computer:
Ron vehicles without steerin gwheel buttons
(Ypage 173)
Ron vehicles with steerin gwheel buttons
(Ypage 183)
å button (equipment-dependent)
XTo activate/deactivate: when the engine is
running, press the åbutton.
The å warning lamp in the instrument
cluster lights up when ESP
®is deactivated.
Trailer stabilization
Observe the important safety guidelines for the
driving safety system (Ypage 62).
GWARNING
If road and weather conditions are poor,
trailer stabilization will not be able to prevent
the vehicle/trailer combination from swerv-
ing. Trailers with ahigh center of gravity can
tip over before ESP
®can detect this. There is
ar isk of an accident.
Always adapt your driving style to the prevail-
ing road and weather conditions.
ESP
®trailer stabilization counteracts critical
driving situations in good time and thereby pro- vides considerable assistance when driving with
at railer. Trailer stabilization is part of ESP
®. If the sensor system and evaluation logic detect
trailer swinging movements, ESP
®trailer stabi-
lization firstly brakes individual vehicle wheels in
at argeted manner .Itthus counteracts swinging
movements. If the swinging movements do not
stop, the vehicle is braked until the vehicle/
trailer combination is stabilized. If necessary,
the vehicle's engine output is limited.
If your vehicle with trailer (vehicle/trailer com-
bination) start stoswerve, you will be able to
stabilize the vehicle/trailer combination only by
braking. ESP
®trailer stabilization helps you to
stabilize the vehicle/trailer combination in this
situation.
ESP
®trailer stabilization is activated above
speeds of about 40 mph (65 km/h).
If ESP
®is switched off or deactivated because of
am alfunction, the trailer stabilization system
will not function.
Crosswind Assist
Observe the important safety guidelines for the
driving safety system (Ypage 62).
Strong crosswind gusts can impair the road-
holding of your vehicle when driving straight
ahead. The Crosswind Assist function integra-
ted in ESP
®reduces these impairments.
Dependin gonthe direction and intensity of the
side wind, Crosswind Assist intervenes auto-
matically. ESP
®intervenes with stabilizing brak-
ing to assist you in keeping the vehicle in the
lane. When Crosswind Assist intervenes, the
display shows the traffic sign for stron gside
winds and the message Crosswind Assist
.
Crosswind Assist is activated automatically
above avehicle speed of approx. 50 mph
(80 km/h) when the vehicle is driving straight
ahead or cornering gently.
Crosswind Assist does not react:
Rin the event of severe jolts and vibrations, e.g.
when driving over uneven surfaces or pot-
holes
Rwhen grip is reduced, e.g. on snow or ice or
when hydroplaning
Crosswind Assist does not work if ESP
®is deac-
tivated or disabled because of amalfunction.
Driving safety systems65
Safety
Z
Page 68 of 310

Theft deterrentlocking system
Immobilizer
XTo activate: remove the key fromt he ignition
lock.
XTo deactivate: turnthe key to position 2in
the ignition lock.
The immobilize rprevents your vehicl efrom
being started withou tthe correct key.
Alway stake the key with yo uand lock the vehi-
cle when leaving the vehicle. If yo uleave the key
in the vehicle, anyone can start the engine.
iThe immobilize risalwaysdeactivated when
yo us tart the engine.
ATA (Anti-Theft Alarm system)
XTo arm: lock the vehicl ewitht he key.
Indicato rlam p: in the overhead control
panel flashes.
XTo disarm: unlock the vehicl ewitht he key.
or
XInsert the key into the ignition lock.
If the alar msystem is armed ,avisualand audi-
bl ea larm is triggered when the following are
opened:
Rad oor
Rthe vehicl ewitht he mechanical key
Rthe tailgate/rea rdoor
Rthe hood
XTo sto pthe alarm: press the%or&
button on the key.
or
XInsert the key into the ignition lock.
The alar mstops. The alar
misnot switched off ,evenify ouclose
the open door thatt riggered it, for example.
66Theftdeterrentl ockingsystem
Safety
Page 69 of 310

Useful information
This Operator's Manual describes all models as
well as standard and optional equipment of your
vehicle that were available at the time of going
to print.Country-specific variation sare possi-
ble. Note that your vehicle may not be equipped
with all of the described functions. This also
applies to system sand function srelevantt o
safety.
Read the information on qualified specialist
workshops (
Ypage 29).
Key
Important safetyn otes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle' sequipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parkin gbrake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is arisk of an acciden tand injury.
When leaving the vehicle, always tak ethe
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If you attach heavy or large objects to the
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock .This could
cause the engin etobeswitched off. There is a
risk of an accident.
Do not attach any heavy or large objects to the
SmartKey. Remove any bulky key rings before
insertin gthe SmartKey int othe ignition lock.
!Keep the SmartKey away from strong mag-
netic fields. Otherwise, the remotec ontrol
function could be affected.
Strongm agnetic fields can occur in the vicin-
ity of powerful electrical installations.
Do not keep the key:
Rwith electronic devices,e .g.am obile phone
or another key
Rwith metallic objects, e.g. coinsorm etal foil
Rin metallic objects, e.g. metal cases
This can affectt he key's functionality.
Key functions
:Battery checklamp
;&To lock the vehicle centrally
=5To unlock the sliding doors and the
tailgate or rear door or to unlock and open or
close the electric sliding door
?Mechanical key
A% To unlock the vehicle centrally or
unlock the frontd oor(s) only
The vehicle’s equipment includes 2keys. There
is an mechanical key in each key.
The key can be used to unlock the vehicle from
some distance. To preventt heft, only use the
key in the immediatev icinity of the vehicle.
Change the batteries immediately if battery
checkl amp:does not light up briefly with
every press of abutton (
Ypage 69).
XTo unlock centrally: press the%button.
The turn signals flash once.
Key67
Opening and closing
Z
Page 70 of 310

XTo unlockthe sliding doors and the tail-
gate or rear doo ronly:p ress the 5but-
ton.
The turn signals flash once.
iIf yo udon ot open the vehicl ewithina pprox-
imately40s econds of unlocking:
Rthe vehicleislocked again.
Rthe anti-thef tprotection is armed again.
XTo lock centrally: press the&button.
The indicator lamps flash thre etime sif:
Rthe anti-thef tprotection is armed.
Rallt he doors and the tailgate or rea rdoor
are closed.
XCheck the locking knobs on al lthe doors.
The locking knobs must al lbeinthe lowered
position.
The key's factory setting enables yo utocen-
trally lock and unlock the following:
Rthe driver's and the front-passenger door
Rthe sliding doors
Rthe tailgate or rea rdoor
In an emergency, the driver's door can also be
unlocke dmanuall yusing the mechanical key
(
Ypage 68).
Yo uc an also set an audibl esignaltoc onfirm
thatt he vehicl ehasbeen locked .The audible
locking-verification signalc an be switched on/
off:
Rusing the on-board compute ronvehicles with
steering whee lbuttons (Ypage 187)
Rat as pecialist qualified workshop for vehicles
withou tsteering whee lbuttons
After unlocking using the remote control, the
surround lighting also goe sonint
he dark. For
ve
hicles with steering whee lbuttons, the sur-
round lighting can be activate dand deactivated
in the on-board compute r(
Ypage 186).
Changingthe settings of the locking
system
If yo utravel alone alot,y ou mayw ishtoc hange
the settings of the locking system .Press
the % button to unlock:
Rthe driver's and front-passenger door (Cargo
Van)
or
Rthe driver's door (Passenger Van)
XTo chang ethe setting: press and hol ddown
the % and& buttons simultaneously
unti lthe battery check lamp flashe stwice.
(
Ypage 67).
If the setting of the locking system is changed
withint he signalr angeoft he vehicle, press the
& or% button to:
Rlock or
Runlock the vehicle
The key now functions as follows:
XTo unloc kthe driver' sdoororf rontdoors:
press the %button once.
XTo unloc kcentrally: brieflypress the %
button twice.
XTo lock centrally: press the&button.
XTo restore factory settings: press and hold
down the %and& buttons simultane-
ouslyu ntilthe battery check lamp flashes
twice (
Ypage 67).
The key unlocks the vehicl ecentrall yagain .
Mechanical key
General notes
If the vehicl ecan no longer be locked or
unlocke dwitht he key,u sethe mechanical key.
The anti-thef talarm system (ATA) is triggered
when yo uunlock and open the vehicl eusing the
mechanical key (
Ypage 66).
The alarm can be disabled in the following two
ways:
XPress the %or& button on the key.
or
XInsert the key into the ignition lock.
Removing the mechanical key
68Key
Opening and closing
Page 71 of 310

XSlide release catch:in the direction of the
arrow and ,atthe same time ,remove mechan-
ica lkey ; from the key completely.
Inserting the mechanical key
XPush mechanical key ;completely into the
key unti litengages and release catch :is
back in its basic position.
Unlocking/locking the vehicle using
the mechanical key
The doo rloc kf or unlocking in an emergency is
on the driver’ sdoor.
XTo unloc kthe driver's door: insert the
mechanical key fully into the driver' sdoor
lock and turn it counter-clockwise.
The driver’ sdoorisu nlocked.
XTo lock the vehicle: lock alldoors excep tthe
driver' sdoorfrom the inside. To do this ,press
dow nthe doo rloc king buttons.
XInsert the mechanical key fully into the driv-
er's doo rloc ka nd turn it clockwise.
The driver' sdoorisl ocked.
Battery of the key
Important safety notes
GWARNING
Batterie scontai ntoxic and corrosiv esubstan-
ces. If batteries are swallowed, it can result in
severe health problems .There is ariskoff atal
injury.
Kee pbatteries outoft he reach of children. If
ab attery is swallowed, see kmedica lattention
immediately.
HEnvironmental note
Batterie scontai ndangerous
substances. It is against the
la wtod ispose of them with
the householdr ubbish. They
mus tbec ollected separately
and recycle dtoprotect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to aquali fied spe-
cialist workshoporas pecial
collection point for used bat-
teries.
Mercedes-Benz recommend sthat yo uhavet he
battery changed at aquali fied specialist work-
shop.
Checking the battery
XPress the &or% button.
If battery check lamp :lights up briefly, the
battery is sufficiently charged.
If battery check lamp :doe snot light up
briefly, the battery is empty.
XChang ethe battery (Ypage 69).
If the key battery is checke dwithin the signal
rang eoft he vehicle, pressing the &or%
button results in:
Rlock or
Runlock the vehicle
iThe battery may be obtaine datany qualified
specialist workshop.
Changing the battery
You need atypeC R2 025 3Vc ellbattery.
XPull outt he mechanical key from the key
(Ypage 68).
Key69
Opening and closing
Z
Page 72 of 310
XPush mechanical key;into the opening in
the key in the direction of the arrow until bat-
tery compartment cover :opens. When
doing so, do not hold battery compartment
cover :shut.
XRemove battery compartment cover :.
XTap the key against the palm of your hand so
that battery=falls out of the battery com-
partment.
XInsert the new battery into the battery tray
with the positive pole facing upwards. Use a
lint-free cloth to do so.
XInstall battery compartment cover :to the
key casing with the frontl ugs first and push
closed.
XSlide mechanical key ;back into the key
(Ypage 69).
XCheck the function of all key button sonthe
vehicle.
70Key
Opening and closing