associated damage, which may not be visible,to
th e bumpers or radiator grille, ha vethe function
of thera dar sensors checked at a qualified spe‐
cialist workshop. The driver assis tance sy stem
may no longer workproperly.
Overview of driving and driving saf ety sys‐
te ms
In this section, youwill find information about
th efo llowing driving sy stems and driving saf ety
sy stems:
R360° Camera (→page 181)
RABS ( Anti-lock Braking Sys tem) (→page 151)
RDis tance Pilot DISTRONIC (→pa ge 161)
RAIR BODY CONTROL (→page 172)
RAc tive Brake Assi st(→page 155)
RAc tive Lane Keeping Assist (→page 195)
RATTENTION ASSIST (→page 189)
RBA S (Brak eAssist System) (→page 151)
REBD ( Electronic Brakeforc eDistribution)
(→page 155)
RESP®(E lectronic Sta bility Pro gram)
(→page 152)
RDRIVE PIL OT(→page 168)
RHOLD fu nction (→page 171)
RSteering Pilot (→page 168)
RParking Pilot (→page 184)
RParking Assist PARKTRONI C (→page17 6)
RRe ar view camera (→page 179)
RCruis e control (→page 160)
RBlind Spot Assist andActive Blind Spot Assi st
(→page 193)
RTraf fic Sign Assist (→page191)
Fu nctions of ABS (anti-lock braking sy stem)
ABS regulates the brake pressure in critical driv‐
ing situations:
RDuring braking, the wheels are pr evented
from blocking, forex ample due tomaximum
full-s top braking or insuf ficient traction of the
tires.
RVe hicle steerability while braking is ensured.
RABS is active from speeds of appr ox. 5 mph
(8 km/h).
If ABS inter venes when braking, youwill feel a
pulsing in the brake pedal. The pulsating brake
pedal can be an indication of hazardous road
conditions and can ser veas a reminder totake
ex tra care while driving.
Sy stem limits
ABS may be impaired or may not function if a
malfunction has occur red and theye llow !
ABS warning lamp lights up continuously in the
instrument clus ter af terth e engine is star ted.
Fu nction of BAS (Brake Assist Sy stem)
&
WARNING Risk of an accident caused by
a malfunction in BAS (Brake Assist Sys‐
te m)
If BA S is malfunctioning, the braking dis tance
may increase in an eme rgency braking situa‐
tion.
Driving and parking 15
1
Warning/indicator lamp
Possible causes/consequences and MSolutions
?
Coolantwarning lamp The
red coolant warning lamp is lit while the engine is running.
Po ssible causes are:RThe temp erature sensor is malfunctioning
RThe coolant le vel is too low
RThe air supply tothera diator is obstructed
RThe radiator fan is de fective
If th ere is an additional warning tone, the coolant temp erature has exceeded 248 °F (120 °C).
&
WARNING Danger of burn s when opening the hood
If yo u open the hood when the engine has overheated or during a fire inthe engine compartment, you could come
into contact with hot gases or other escaping operating fluids.
#Before opening the hood, allow the engine tocool down.
#Intheeve nt of a fire inthe engine compartment, keep the hood closed and call thefire service.
#Pull over and stop theve hicle safely and switch off the engine, paying attention toroad and traf fic conditions. Do
not continue driving under any circums tances.
#Obser vethe messages in the multifunction displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale:
#Consult a qualified specialist workshop.
438
Display messages and warning/indicator lamps
