KEYLESS- GOGenera l notesVehicles wit h KEYLESS-GO are equipped wit h a
SmartKey featurin g an integrate d KEYLESS-GO
function and a detachable Start/Sto p button.
A chec k whic h periodically establishes a radi o
connection between th e vehicl e and th e Smart -
Key determine s whether a valid SmartKey is in
th e vehicle. This occurs, for example, when
starting th e engine.
Whe n you insert th e Start/Sto p butto n int o th e
ignition lock, th e system needs approximately
two seconds recognition time. You can then use
th e Start/Sto p button.
Pressing th e Start/Sto p butto n several times in
succession corresponds to th e differen t ke y
position s in th e ignition lock. This is only th e
cas e if you are no t depressing th e brak e pedal .
If you depress th e brak e pedal and press th e
Start/Sto p button, th e engin e start s immedi-
ately.
To start th e vehicl e without actively usin g th e
SmartKey: R
th e Start/Sto p butto n mus t be inserted in th e
ignition lock. R
th e SmartKey mus t be in th e vehicle.R
th e vehicl e mus t no t be locke d wit h th e
SmartKey or KEYLESS-GO ( Y
page 79).
Do no t keep th e SmartKey:R
wit h electronic devices, e.g. a mobile phone
or another SmartKey. R
wit h metallic objects , e.g. coins or metal foil.R
inside metallic objects , e.g. a metal case.
This can impair th e functionalit y of th e KEY-
LESS-GO key.
Do no t keep th e KEYLESS-GO ke y in th e tem-
perature-controlled cup holder ( Y
page 340).
Otherwise , th e KEYLESS-GO ke y will no t be rec -
ognized.
If you loc k th e vehicl e wit h th e SmartKey' s
remot e control or wit h KEYLESS-GO , after a
short time: R
you will no t be able to switch on th e ignition
wit h th e Start/Sto p button.R
you will no t be able to start th e engin e wit h th e
Start/Sto p butto n until th e vehicl e is
unlocke d again . If you loc k th e vehicl e centrally usin g th e butto n
on th e fron t door ( Y
page 85) , you can continu e
to start th e engin e wit h th e Start/Sto p button.
The engin e can be switched off while th e vehicl e
is in motion by pressing and holding th e Start /
Stop butto n for three seconds. This function
operate s independentl y of th e ECO start/sto p
automatic engin e switch-off function .
Key positions wit h KEYLESS-G O
C
Start/Sto p butto n D
Ignition loc k
As soo n as th e ignition is switched on , all th e
indicator lamp s in th e instrumen t cluste r ligh t
up. Further information on situation s wher e an
indicator lamp either fail s to go out after starting
th e engin e or lights up while drivin g
( Y
page 317).
If Start/Sto p butto n C has no t yet been
pressed, this corresponds to th e ke y bein g
remove d from th e ignition .X
To switch on th e power supply : press
Start/Sto p butto n C once .
The powe r supply is switched on . You can no w
activat e th e windshield wipers, for example.
The powe r supply is switched off again if: R
th e driver's door is opened and R
you press Start/Sto p butto n C twice when in
this position X
To switch on th e ignition: press Start/Sto p
butto n C twice .
The ignition is switched on .
If you press Start/Sto p butto n C once when
in this position , th e ignition is switched off
again .146
Driving
Driving and parking