2018 MERCEDES-BENZ S CLASS lock

Child saf et y loc ks
Ac tivating/deactivating the ch ild saf et y lock
fo r the re ar doors
q
WA RNING Risk of accident and inju ry
due to ch ildren left unat te nded in th e
ve hicle
If yo u lea ve ch ildren unaccompanied in th e
ve hicle, th ey may be able to set th e ve hicle in
motion, fo r ex ample by :R
Re leasing th e parking brake.R
Shifting th e transmission out of park
position ] .R
St arting th e engine.
In addition, th ey may operate ve hicle equip‐
ment.

Locking/unlocking th e ve hicle centrally from
th e inside

If yo u open th e trunk lid from outside, th e trunk
lid is automatically unloc ke d.
Problems with KEYLESS-GO
Problem
Po ssible causes/consequences and P Solutions
Yo u can no lon ge r lock or unlock th e
ve hicle using KEYLESS-GO. Po ssible causes: R
The SmartK ey battery is dischar ge d or nearly dischar ge d.R
There is inter fe re nce from a po we rf ul ra dio signal source.R
The SmartK ey is defective.

R
Press th e closing or locking button
on th e trunk lid.R
Pull th e trunk lid handle.
HANDS-FREE AC CESS function Wi th HANDS-FREE AC CESS yo u can open, close
or inter ru pt trunk lid mo ve ment by per fo rm ing a
kicking mo ve ment under th e re ar bumper.
The kicking mo ve ment triggers th e opening or
closing process alternately.
Obser ve th e no te s when opening ( →
page 66)
and closing ( →
page 67 ) th e trunk lid.

R
The kicking mo ve ment must be to wa rd s th e
ve hicle and bac k.
1
Sensor de te ction ra nge
If se ve ra l consecutive kicking mo ve ments are
not successful, wa it te n seconds.
Sy st em limitations
The sy st em may be impaired or may not function
if: R
Snow or dirt, e.g. from ro ad salt, co ve rs th e
sensor area. R
The kicking mo ve ment is made using a pros‐
th et ic leg. The trunk lid could be opened or closed unin te n‐
tional ly , in th e fo llowing situations: R
If a person's arms or legs are moving in th e
sensor de te ction ra nge, e.g. when polishing
th e ve hicle, sitting on th e edge of th e trunk,
or picking up objects. R
If objects are mo ve d or placed behind th e
ve hicle, e.g. ch arging cables, te nsioning
st ra ps or luggage. R
When wo rk ing on th e trailer coupling, trailers
or re ar bicycle ra ck s.
Deactivate KEYLESS-GO ( →
page 59) or do not
car ry th e SmartK ey about yo ur person in such
situations.
Swit ch ing separate trunk locking on/off
If yo u centrally unlo ck th e ve hicle while separate
locking is activated, th e trunk re mains loc ke d.

Un locking th e trunk with th e emer ge ncy
re lease from inside
Re qu irements:R
th e 12 V ve hicle battery is connected and
ch ar ge d.

Anti-theft pr ot ection
Fu nction of th e immobilizer
The immobilizer pr eve nts yo ur ve hicle from being
st ar te d without th e cor re ct SmartK ey .
The immobilizer is automatically activated when
th e ignition is switched off and deactivated when
th e ignition is switched on.
When leaving th e ve hicle, alw ay s ta ke th e Smart‐
Ke y wit h yo u and lock th e ve hicle. An yo ne can
st art th e engine if a va lid SmartK ey has been left
inside th e ve hicle.

R
Af te r unlocking th e ve hicle using KEYLESS-
GO.