2018 MERCEDES-BENZ G-CLASS SUV radiator

R
Ensu rethat a bow wave does not form asyou
drive.
R Do not stop in thewate r and do not switch
off the engine. Ensure the ECO start/ stop
function is switched off (/ page149).
Driving in mountainous terrain
Also obser vethefo llowing information when
driving in moun tainous terrain:
R Obse rveth eva lues of the approach/depar‐
ture angle and of the maximum gradient
(/ page 438).
R Enga gethe dif fere ntial lo cks if necessary
(/ page 161).
R Avoid high engine speeds.
R Use the braking po wer of the engine when
driving downhill.
R Shift toa lo werge ar on uphill gradients and
on long, steep downhill gradients.
Checklist af ter driving off-road
Off-road driving terrain places greater demands
on your vehicle than driving on no rmalroads.
Check the entire vehicle for dama geand fore ign bodies
everytime af ter driving off-road. Foreign
bodies in the wheels or driv etra in can lead to
imbalances and therefore vibrations.
R Shift the transfer case tothe on-ro ad posi‐
tion HIGH RANGE.
R Disengage the dif fere ntial lo cks.
R Apply the brakes todry them af terfo rd ing.
R Check that the service brake is working nor‐
mally af ter a long downhill stre tch.
R Clean thefo llowing components everytime
af te r driving off-road:
- licence plate number
- headlamps and tail lamps
- tyres, wheels and wheel ar ches
- underbody
R After driving thro ugh sand, mud, water or
gr ave l, ha vethefo llowing components
ch ecked and cleaned:
- brake discs and brakepads
- tyres and wheels
- axle joints -
radiator ECO
start/s top function Ope
ration of the ECO start/s top function
Mercedes -AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognise dangers.
The engine is switched off au tomatical lyin the
fo llowing situations if all vehicle conditions for
an automatic engine stop are me t:
R you brake theve hicle toast andstill in trans‐
mission position hori.
if yo u swit chon the HOLD function or select a
dif fere nt transmission position than k, the
engine will automatically stop in thefo llowing
situations:
R youstop behind a vehicle that is pulling
aw ay.
R youstop at a stop sign when there is no vehi‐
cle in front of you.
R you turn thesteering wheel hard at a low
speed. 14 8
Driving and pa rking

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 (/ page 386).
The sensors must not be co vered, forex ample
by cycle rack s, overhanging 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 workproperly. 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 203)
R ABS (Anti-lock Braking System)
(/ page 178)
R Active Dis tance Assi stDISTRONIC
(/ page 190)
R Adaptive brake lights (/ page186)
R Active Brake Assi st
R Active Lane Keeping Assist (/ page219)
R ATTENTION ASSIST (/ page213)
R BAS (Bra keAssist System) (/ page179)
R Hill Start Assist (/ page194)
R EBD ( Electronic Brakeforce Distribution)
(/ page 183)
R ESP ®
(Electronic Stability Program)
(/ page 179)
R Active Speed Limit Assi st R
HOLD function (/ page 195)
R Speed limi ter (/ page187)
R Active Parking Assist (/ page 207)
R Parking Assist PARKTRONIC (/ page197)
R Reversing camera (/ page 201)
R Cruise control (/ page186)
R Blind Spot Assist (/ page217)
R Traf fic Sign Assi st (/ page 215)
R Damping adjustment (/ page 196) Fu
nctions 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 ev ented from locking.
R Vehicle steerability while braking is ensured.
If ABS inter venes when braking, you will feel a
pulsing in the brake pedal. The pulsating brake
pedal can be an indication of hazardous road 17 8
Driving and pa rking

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.
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. #
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 501