in front of, behind or next
totheve hicle (depend‐
ing on theve hicle's equipment).
Depending on theve hicle's equipment, thera dar
sensors are integrated behind the bumpers
and/or behind the Mercedes star. The ultrasonic
sensors are located in the front and rear bump‐
ers. Keep these parts free of dirt, ice and slush
(/ page 489). The sensors must not be cov‐
ered, forex ample bycycle rack s, ove rhanging
loads, sticke rs,fo il or foils toprotect against
st one chipping. Additional license plate brac kets
can li kewise impair the function of the ultrasonic
sensors. In theev ent of damage tothe bumpers
or radiator grille, or following a collision impact‐
ing the bumpers or radiator grille, ha vethe func‐
tion of the sensors checked at a qualified spe‐
cialist workshop. If the sensors are damaged,
some driving sy stems and driving saf ety sy stems
may no longer function proper 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 256)
R ABS (Anti-lock Braking System)
(/ page 210)
R Active Dis tance Assi stDISTRONIC
(/ page 228)
R Adaptive Brake Lights (/ page 222)
R AIR BODY CONTROL (/ page242)
R Active Brake Assi st (/ page 216)
R Active Lane Keeping Assist (/ page273)
R ATTENTION ASSIST (/ page 266)
R BAS (Bra keAssist System) (/ page210)
R Hill Start Assist (/ page240)
R DYNA MIC BODY CONT ROL (/ page242)
R DSR (Dow nhillSpeed Regulation)
(/ page 226) R
EBD ( Electronic Brakeforce Distribution)
(/ page 216)
R ESP ®
(Electronic Stability Program)
(/ page 211)
R Off-road ESP ®
(/ page 214)
R ESP ®
Crosswind Assi st (/ page 215)
R ESP ®
trailer stabilisation (/ page216)
R Active Speed Limit Assi st (/ page 232)
R HOLD function (/ page240)
R STEER CONTROL (/ page 216)
R Active Steering Assist with rescue lane func‐
tion (/ page 234)
R Limiter (/ page 223)
R Active Emergency Stop Assist (/ page 238)
R Active Parking Assist (/ page 260)
R Parking Assist PARKTRONIC ( /page 246)
R Reversing camera (/ page 253)
R Active Lane Change Assi st (/ page 236)
R Cruise control (/ page 222) Driving and parking
209
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
? Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
*Possible 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
continue driving under any circums tances. #
Obser vethe messages on 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. Display messages and
warning/indicator lamps 619
