MERCEDES-BENZ G-CLASS SUV 2018 Owners Manual

Key
Display messages
Possible causes/consequences and M
MSolutions
Á Key not detected (red dis‐
play message) *T
hekey cannot be de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you swit choff the engine:
R You can no lon gerst art the engine.
R You cannot centrally lock theve hicle. #
Ensure that theke y is in theve hicle.
If th eke y de tection function has a malfunction due toast ro ng radio signal source: #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. #
Place theke y in the slot forst arting the engine with theke y (/ page142).
Á
Replace key *T
hekey needs tobe replaced. #
Consult a qualified specialist workshop.
Á Key not detected (white
display message) *T
hekey is cur rently und etected. #
Change the location of theke y in theve hicle. #
Ifth eke y is still not recognised, start the engine with theke y in the slot (/ page142). 478
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Á Change key batteries *T
hekey bat tery is dischar ged. #
Replace the battery (/ page73).
Á
Place the key in the
marked space See Owner's
Manual *T
hekey de tection function is malfunctioning. #
Change the location of theke y in theve hicle. #
Start theve hicle with theke y in the slot (/ page142). Ve
hicle Display messages
Possible causes/consequences and M MSolutions
Front/rear differential lock
system malfunction *T
he dif fere ntial lo cks are malfunctioning.
Other driving sy stems and driving saf ety sy stems may also be malfunctioning. Display messages and
warning/indicator lamps 47 9

Display messages
Possible causes/consequences and M
MSolutions &
WARNING Risk of accident in theeve nt of a fault with the driving and driving saf ety sy stems
If th e dif fere ntial lo cks are malfunctioning, the ABS, ESP ®
, ETS/4ETS and BAS driving and driving sa fety sys‐
te ms may also malfunction.
The wheels may lock when braking. The braking dis tance may increase in an emergency braking situation. #
Drive on carefully. #
Consult a qualified specialist workshop immediatel y. #
Drive on carefully. #
Consult a qualified specialist workshop immediatel y.
Differential lock active ABS
and ESP not available *
ABS and ESP ®
are not available when the dif fere ntial lo cks are switched on.
Other driving and driving saf ety sy stems may also be una vailable.
The brake sy stem continues tooperate normally. The braking dis tance may increase in an emergency braking situa‐
tion. &
WARNING Risk of skidding if ABS and ESP ®
are una vailable
If ABS and ESP ®
are una vailable, the wheels could lock when braking and ESP ®
cann otper form vehicle stabili‐
sation.
The steering capability and braking characteristics are thus se verely impaired. The br aking distance may
increase in an eme rgency braking situation. In addition, other driving saf ety sy stems are switched off. 480
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
Drive on carefull y. #
Switch on the dif fere ntial lo cks only for off-road driving. #
Switch off the dif fere ntial lo cks immediately af ter off-road driving. #
Drive on careful ly. #
Switch on the dif fere ntial lo cks only for off-road driving. #
Switch off the dif fere ntial lo cks immediately af ter off-road driving.
Desert drive progr. active
ESP unavailable See Own-
er's Manual *
ABS and ESP ®
are restricted in the Desert drive program.
Other driving and driving saf ety sy stems may also be una vailable.
The brake sy stem continues tooperate normally. The braking dis tance may increase in an emergency braking situa‐
tion. &
WARNING Risk of skidding if ABS and ESP ®
are restricted
If ABS and ESP ®
are restricted, the wheels could lock when braking and ESP ®
cann otper form vehicle stabilisa‐
tion.
The steering capability and braking characteristics are thus se verely impaired. The br aking distance may
increase in an emergency braking situation. In addition, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Activate the Desert drive prog ram only when driving on sand. Display messa
ges and warning/indicator lamps 481

Display messages
Possible causes/consequences and M
MSolutions #
Deactivate the Desert drive program immediately af ter driving on sand. #
Drive on careful ly. #
Activate the Desert drive prog ram only when driving on sand. #
Deactivate the Desert drive program immediately af ter driving on sand.
LOW RANGE Stop Apply
parking brake *T
here is a transfer case malfunction. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. #
Apply the electric parking brake. #
Where necessar y,also secure theve hicle against rolling away. #
Switch the transmission toposition j.
ÿ
Different. lock sys. Mal-
function *T
here is a transfer case malfunction. #
Do not shift the transfer case! #
Use the electric parking brake tosecure theve hicle against rolling away. #
Consult a qualified specialist workshop.
LOW RANGE Deactivate dif-
ferential locks *O
ne or se veral shifting conditions werenot met. #
Toengage HIGH RANGE, the dif fere ntial lo cks must be switched off. #
Repeat thege ar change. 482
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
LOW RANGE Malfunction *T
here is a transfer case malfunction. #
Do not shift the transfer case! #
Use the electric parking brake tosecure theve hicle against rolling away. #
Consult a qualified specialist workshop.
LOW RANGE Shift to posi-
tion N briefly *O
ne or se veral shifting conditions werenot met. #
Switch the transmission toposition i. #
Repeat thege ar change.
LOW RANGE Max. speed
40 km/h *T
he maximum speed forch anging gear of 40 km/h has been exceeded. #
Drive more slowly. #
Repeat thege ar change.
LOW RANGE Malfunction
To park, apply parking
brake *T
here is a transfer case malfunction. #
Do not shift the transfer case! #
Use the electric parking brake tosecure theve hicle against rolling away. #
Consult a qualified specialist workshop.
LOW RANGE Max. speed
70 km/h *T
he maximum speed forch anging gear of 70 km/h has been exceeded. #
Drive more slowly. #
Repeat thege ar change. Display messages and
warning/indicator lamps 483

Display messages
Possible causes/consequences and M
MSolutions
Gearbox protection Limit
30 km/h Switch off LOW
RANGE *T
he oil temp erature in the transfer case is too high. #
Inthe on-ro ad position, shift toHIGH RANGE.
ÿ
Different. locking sys. cool-
ing down Please wait *T
he dif fere ntial lo cks are overheated. #
Wait briefly.
LOW RANGE Shifting can-
celled Please reactivate *T
he transfer case did not per form thege ar change. #
Repeat thege ar change. #
Ensure all shifting conditions are met (/ page159).
LOW RANG E Max. speed
10 km/h *T
he maximum speed forch anging gear of 10km/h has been exceeded. #
Drive more slowl y. #
Repeat thege ar change.
LOW RANGE Max. speed
20 km/h *T
he maximum speed forch anging gear of 20 km/h has been exceeded. #
Drive more slowly. #
Repeat thege ar change. 484
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Max. speed 6 mph (yellow
display message) *T
he maximum reliable speed forfo rd ing of 10km/h has been exceeded. #
Drive more slowl y.
Fording not possible Con-
sult workshop *T
here is a fault with the air flap of the air intake.
Fo rding is not possible. #
Drive on carefull y. #
Consult a qualified specialist workshop.
Air intake malfunction See
Owner's Manual *T
he air flap of the air intake is dirty or iced up.
Fo rding is not possible. #
Atoutside temp eratures abo ve4 °C, re-sta rt the engine. #
Ifyo u ha vealready star tedfo rd ing, drive on carefull y. #
Clean theve hicle. #
Defrost the air intake.
Ð
Steering malfunction Stop
immediately See Owner's
Manual *T
hesteering is malfunctioning Steering capability is considerably impaired. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions.
Do not continue driving under any circums tances. Display messa
ges and warning/indicator lamps 485

Display messages
Possible causes/consequences and M
MSolutions #
Consult a qualified specialist workshop. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances. #
Consult a qualified specialist workshop.
Ð Steering malfunction
Increased physical effort
See Owner's Manual *T
he po wer assi stance forth esteering is malfunctioning. &
WARNING Risk of an accident due toaltered steering characteristics
If th e po wer assi stance of thesteering fails partially or comple tely, you will need touse more forc eto steer. #
If safe steering is possible, drive on carefully. #
Visit or consult a qualified specialist workshop immediatel y. #
If safe steering is possible, drive on carefully. #
Visit or consult a qualified specialist workshop immediatel y.
? *T
he bonnet is open. &
WARNING Risk of accident due todriving with the engine bonn etunlo cked
An unloc ked engine bonn etmay open up when theve hicle is in motion and block your vie w. #
Never unlock the engine bonn etwhen driving. 486
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
Before every trip, ensure that the engine bonn etis loc ked. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions. #
Close the bonn et.
C *A
t least one door is open. #
Close all doors.
¥
Top up washer fluid *T
hewasher fluid le vel in thewa sher fluid reser voir has dropped below the minimum. #
Top up thewa sher fluid (/ page 380). Climate cont
rol Display messages
Possible causes/consequences and M
MSolutions
& inoperative See Owner's
Man. *T
hestationary heater is temp orarily malfunctioning. #
When theve hicle is on a le vel sur face and the engine has cooled down, make up tofour attem ptsto switch on
th est ationary heater, waiting se veral minutes between each attem pt. #
Ifth est ationary heater does not swit chon, consult a qualified specialist workshop. Display messages and
warning/indicator lamps 487