brake sensor MERCEDES-BENZ SL-Class 2016 R231 User Guide

Display messagesPossible causes/consequences andMSolutions
PRE-SAFE
PRE-SAFEFunctions
Currently Limited
SeeOperator'sMan‐
ual
PRE ‑S AF E®Brake is deactivated or temporarily inoperative. Pos -
sibl ecauses are:
Rfunction is impaire ddue to heav yrain or snow.
Rth esensor sin th eradiato rtrim and th ebumper are dirty.
Rth erada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radi osta-
tion sor other source sof electromagnetic radiation .
RMercedes-AMG vehicles: ESP®is deactivated
Rthesystem is outside th eoperating temperature range.
Rth eon-boar dvoltag eis to olow.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
PRE ‑S AF E
®Brake is operational again .
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 171).
XClean th esensor sin th eradiato rgrill and th ebumper
(
Ypage 546).
XRestart th eengine.
XMercedes-AMG vehicles: reactivat eES P®(Ypage 76) .
PRE-SAFEFunctions
LimitedSee Opera‐
tor's Manual
PRE-SAF E®Brake is inoperative due to amalfunction .BA SPLU Sor
th edistanc ewarnin gsignal may also hav efailed.
XVisit aqualified specialist workshop .
Display messages247
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Radar Sensors
Dirty See Opera‐
tor's Manual
At leaston eof th efollowing drivin gsystems or drivin gsafet ysys-
tems is temporarily restricted or inoperative:
RPRE-SAF E®Brake
RDISTRONIC PLU S
RActive LaneKeepin gAssis t
RActive Blind Spot Assis t
If th erada rsensor system in fron tis dirty, Active Blind Spot Assis t
will no tperform acourse-correcting brak eapplication .
Possibl ecauses are:
Rth esensor sin th eradiato rtrim and/o rin th ebumpers are dirty
Rth efunction of th edrivin gsystem and/o rdrivin gsafet ysystem
is impaire ddue to heav yrain or snow.
A warnin gtone also sounds.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears. Al ldrivin gsystems and drivin gsafet ysystems
are operative again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 171).
XSwitchof fth eengine.
XClean th esensor sin th efollowing location s (Ypage 546):
Rin theradiato rtrim
Rin th efron tbumper
Rin th erear bumper, particularl yin th emiddle of th erear
bumper
XRestart th eengine.
The display message disappears.
A
Malfunction Ser ‐
viceRequired
The rol lbars are defective.
GWARNIN G
The rollbars will then possibl yno tbe extended in th eevent of an
accident.
There is an increase dris kof injury.
XVisit aqualified specialist workshop immediately.
248Display messages
On-board computer and displays