Fu
nction of thera dar senso rs Some driving and driving sa
fety sy stems use
ra dar sensors tomonitor the area in front of,
behind or next totheve hicle (depending on the
ve hicle's equipment).
Depending on theve hicle's equipment, thera dar
sensors are integrated behind the bumpers
and/or behind the Mercedes star. Keep these
parts free of dirt, ice and slush (→ page414).
The sensors must not be co vered, forex ample
by cycle rack s, ove rhanging loads, sticke rs,fo il
or foils toprotect against stone chipping. In the
eve nt of dama getothe bumpers or radiator
grille, or following a collision impacting the
bumpers or radiator grille, ha vethe function of
th era dar sensors checked at a qualified special‐
ist workshop. The driver assis tance sy stem may
no longer workproper ly. Overview of driving sy
stems and driving
saf ety sy stems In
this section, you will find information about
th efo llowing driving sy stems and driving saf ety
sy stems:
R 360° Camera (→ page 228)
R ABS (A nti-lock Braking System)
(→ page 190)
R Active Dis tance Assi stDISTRONIC
(→ page 205)
R Adaptive brake lights (→ page 201)
R AIR BODY CONTROL (→ page218)
R Active Brake Assi st (→page 196)
R Active Lane Keeping Assist (→ page 250)
R ATTENTION ASSIST (→ page243)
R BAS (Brak eAssist System) (→ page191)
R Hill Start Assist (→ page216)
R DYNA MIC BODY CONTROL (→ page218)
R EBD ( Electronic Brakeforc eDistribution)
(→ page 195) R
ESP ®
(Electronic Stability Program)
(→ page 191)
R Active Speed Limit Assi st (→page 208)
R HOLD function (→ page217)
R STEER CONTROL (→ page 196)
R Active Steering Assist (→ page211)
R Speed limi ter (→ page 202)
R Active Parking Assist (→ page 232)
R Parking Assist PARKTRONIC (→ page 221)
R Reversing camera (→ page 225)
R Cruise control (→ page 201)
R Blind Spot Assist and Active Blind Spot Assi st
( → page 247)
R Traf fic Sign Assi st (→page 245) Fu
nction of ABS (Anti-lock Braking Sy stem) ABS
regulates the brake pressure in critical driv‐
ing situations:
R During braking, e.g. at full brake application
or insuf ficient tyre traction, the wheels are
pr eve nted from lo cking. 19 0
Driving and pa rking
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
8 Fu elreser ve wa rning lamp The
yellow fuel reser vewarning lamp is lit while the engine is running.
The fuel supply has dropped into there ser verange. #
Refuel.
?
Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120 °C. &
WARNING Danger of bu rns when opening the bonn et
If yo u open the engine bonn etwhen the engine has overheated or during a fire inthe engine compartment, you
could come into contact wi thhot gases or other escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. Do not con‐
tinue driving under any circums tances. 540
Displaymessa ges and warning/indicator lamps
