52 Safety
Driving safety sys
tems
The distance warning syst em lamp in the
instr umen tcl uste rlights up ifthe dist an ce
to th e vehi cle in front is too small. If yo u
ap proa chaveh icle infront at high spee d,
yo u will alsohear an inte rmit tent si gnal. If yo
udo not brak eor steer yo urself ,the
ve hicl e is auto matically braked ge ntly.
If th ereis an increase drisk ofcollisio n,
PRE-SAFE ®
is ac tiv ated ( =page 36).
Yo umu st ap plyt he bra kesyo urself in or-
der to mainta in the correct dista nce to the
ve hicle infront andto avoid aco llisio n.
Th ePR E-SA FE®
Br ake als ore ac ts to sta-
tionary ob stacl es atspee ds of upto
appro xima tely70 km /h, e.g .stopped or
parked veh icles. 6
To switc hon or of f:swit ch the PRE-
SA FE®
Br ak eon or off using the on-
board comp uter (
=page 284).
The : symbol appea rson the left of
the driver 'sdis play afte rswitching on
the dista ncewa rning system.
In comp lexroad and tra ffic co nditions the
PRE-SAFE ®
Br ak eca nno tal wa yscorrectly
id en tify dange rous situations. Ifvisu al
an d/ oraudible warnings are given or ifth e
ve hicl ebr ak es slightly when the drivin gsit-
uati onisnot critic al ,it is po ssib le to st op
the PR E-SA FE®
Br ak e interven ing at any
point during th is if yo u:
! depress theac ce lerator pedal furthe r
beyond the pressure point or activate
kickdown.
! relea sethe brake pe dal G
Risk of acc ident A
warning is onlygive n an d braking assist-
ance is on lyprovide dby the PR E-SA FE®
Bra keif objects can be de tected clea rly. De-
te ction can beimpaire din pa rticu lari f:
! thes ensors aredir tyor cov ered
! itis snow ingorrain ing heav ily
! thereis inte rferen cefrom anothe rrad ar
sou rce
! ther eis stron gra da r refl ection, e. g.in
multi- storeycarpa rks
The PR E-SA FE®
Br ak edo es not reac t to:
! people an danimals
! oncom ing veh icles and cross traf fic
PRE -SAFE ®
Br ak ema yno td etec t narrow ve-
hi cles ,e .g. moto rcyc lesand veh iclestravel-
ling onapa rallel but offset cou rse. G
Risk of accident PRE
-SAFE ®
Br ak eDistronic brak es your ve-
hi cle, depe nding on itss peed,at ama ximum
of 4m /s².Th is cor respon dsto ap proxi-
mately 40%of you rvehi cle’ sm axim um brak-
ing power. You mu stthen al sobrake to
avoi da col lisi on. G
Risk of accident If
no visual or audible warnings aregiven in
a critica ldr ivin gsit ua tion ,this means the
PRE -SAFE ®
Bra kehas no t detected the risk
of collisi on,is de activa tedor has faile d.
Yo um ust then brak eyou rselfto avoid a col-
li sion. 216_R
E_2006-12a.book Seit e52 Montag ,2. Oktober 2006 12:06 12