display MERCEDES-BENZ GLS 2018 Owners Manual

Display messages
Possible causes/consequences and P Solutions
Cruise Contro l
--- mph R
A condition for activating cruise control has no t been met .
You hav e tried to store a speed belo w 20 mph (30 km/h), for exam-
ple. R
ES P ®
is deactivated. The yellow ES P ®
OF F warning lamp is lit .X
If condition s permit , drive faste r than 20 mph (30 km/h ) and store
th e speed.
or X
Chec k th e activation condition s for cruise control ( Y
page 174).
or X
Reactivat e ES P ®
( Y
page 71) .
Cruise Contro l Off Cruis e control has been deactivated.
If a warning tone also sounds, cruise control has deactivated auto -
matically ( Y
page 174).272
Display messages
On-board computer and displays

Tires Display messages
Possible causes/consequences and P Solutions
Check Tire Pressure
Soon The tire pressure loss warning system has detected a significant loss
in pressure.
A warning tone also sounds.
Possible causes: R
you have changed the positions of the wheels and tires or installed
new wheels and tires. R
the tire pressure in one or more tires has dropped significantly
G WARNING
Tire pressures that are too low pose the following hazards: R
they may burst, especially as the load and vehicle speed increase. R
they may wear excessively and/or unevenly, which may greatly
impair tire traction. R
the driving characteristics, as well as steering and braking, may be
greatly impaired.
There is a risk of an accident. X
Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so. X
Secure the vehicle against rolling away ( Y
page 161).X
Check the tires and, if necessary, follow the instructions for a flat
tire ( Y
page 339). X
Check the tire pressures and, if necessary, correct the tire pressure. X
Restart the tire pressure loss warning system when the tire pres-
sure is correct ( Y
page 361).
Check Tire Pressure
Then Restart Run
Flat Indicator The tire pressure loss warning system generated a display message
and has not been restarted since. X
Set the correct tire pressure in all four tires. X
Restart the tire pressure loss warning system ( Y
page 361).
Run Flat Indicator
Inoperative The tire pressure loss warning system is faulty. X
Visit a qualified specialist workshop.
Please Correct Tire
Pressure The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great. X
Check the tire pressures at the next opportunity ( Y
page 361).X
If necessary, correct the tire pressure. X
Restart the tire pressure monitor ( Y
page 364).Displa y messages 27 3
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
Check Tires The tire pressur e in on e or mor e tires has dropped significantly. The
whee l position is displayed in th e multifunction display.
A warning tone also sounds.
G WARNIN G
Tir e pressures that are to o low pos e th e followin g hazards :R
they may burst, especially as th e load and vehicl e speed increase.R
they may wear excessivel y and/o r unevenly, whic h may greatl y
impair tire traction .R
th e drivin g characteristics , as well as steering and braking , may be
greatl y impaired.
There is a ris k of an accident.X
Stop th e vehicl e without making any sudden steering or braking
maneuvers . Pay attention to th e traffic condition s as you do so.X
Secur e th e vehicl e against rollin g away ( Y
page 161).X
Chec k th e tires and , if necessary, follow th e instruction s for a flat
tire ( Y
page 339). X
Chec k th e tire pressur e ( Y
page 361).X
If necessary, correc t th e tire pressure.
Warnin g Tir e Mal ‐
function The tire pressur e in on e or mor e tires has dropped suddenly. The whee l
position is shown in th e multifunction display.
G WARNIN G
Drivin g wit h a flat tire poses a ris k of th e followin g hazards :R
a flat tire affects th e abilit y to steer or brak e th e vehicle.R
you could lose control of th e vehicle.R
continued drivin g wit h a flat tire will caus e excessive heat build-up
and possibl y a fire.
There is a ris k of an accident.X
Stop th e vehicl e without making any sudden steering or braking
maneuvers . Pay attention to th e traffic condition s as you do so.X
Secur e th e vehicl e against rollin g away ( Y
page 161).X
Chec k th e tires and , if necessary, follow th e instruction s for a flat
tire ( Y
page 339).
Tir e Press. Monito r
Currently Unavaila‐
ble Becaus e there is interferenc e from a stron g source of radi o waves, no
signals from th e tire pressur e sensor s are detected. The tire pressur e
monitor is temporarily malfunctioning .X
Drive on .
The tire pressur e monitor restarts automatically as soo n as th e
problem has been resolved.
Tir e Press. Sen ‐
sor(s) Missin g There is no signal from th e tire pressur e sensor of on e or several
wheels. The pressur e of th e affecte d tire is no t displayed in th e mul-
tifunction display. X
Hav e th e fault y tire pressur e sensor replace d at a qualified special -
ist workshop .274
Display messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions
Tir e Pressure Moni‐
tor Inoperative No
Wheel Sensor s The wheels mounte d do no t hav e a suitable tire pressur e sensor . The
tire pressur e monitor is deactivated. X
Moun t wheels wit h suitable tire pressur e sensors.
The tire pressur e monitor is activated automatically after drivin g for
a few minutes.
Tir e Press. Monito r
Inoperative The tire pressur e monitor is faulty.X
Visit a qualified specialist workshop .
Vehicle Display messages
Possible causes/consequences and P Solutions
Shift to 'P' or 'N'
to Start Engine You attempte d to start th e engin e wit h th e transmission in position ^
or [ . X
Shift th e transmission to position ] or \\ .
Apply Brake to
Shift fro m 'P' You attempte d to shift th e transmission to position [ , ^ or \\
without depressing th e brak e pedal .X
Depress th e brak e pedal .
To Deselect P or N,
Depres s Brake and
Start Engine You attempte d to shift th e transmission out of position ] or \\ int o
another transmission position wit h th e engin e switched off .X
Depress th e brak e pedal .X
Start th e engine.
Apply Brake to
Select R You hav e attempte d to shift from position [ to position ^ without
applyin g th e brakes. X
Depress th e brak e pedal .X
Shift th e transmission to position ^ .
Transmission Not in
P Ris k of Vehicl e
Rollin g Awa y The driver's door is open or no t fully closed and th e transmission is in
position ^ , \\ or [ .
A warning tone also sounds.
G WARNIN G
The vehicl e may rol l away.
There is a ris k of an accident.X
Shift th e transmission to position ] .X
Secur e th e vehicl e against rollin g away ( Y
page 161).X
Clos e th e driver's door completely.
Onl y Shift to 'P'
whe n Vehicl e is Sta ‐
tionar y The vehicl e is moving .X
Stop th e vehicl e safely as soo n as possible, payin g attention to roa d
and traffic conditions. X
Shift th e transmission to position ] .Display messages 27 5
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
Servic e Required Do
Not Shift Gears
Visit Dealer You canno t chang e th e transmission position due to a malfunction .
A warning tone also sounds.
If transmission position [ is selected:X
Drive to a qualified specialist workshop without shifting th e trans -
mission from position [ .
If position ^ , \\ or ] is selected:X
Secur e th e vehicl e against rollin g away ( Y
page 161).X
Notify a qualified specialist workshop or breakdown service.
Reversing Not Possi‐
ble Servic e Required You can no longer shift to transmission position ^ due to a malfunc -
tion .
Transmission position s ] , \\ or [ continu e to be available.
A warning tone also sounds. X
Visit a qualified specialist workshop .
Transmission Mal ‐
function Sto p A malfunction has occurred in th e mechanical transmission compo -
nents.
A warning tone also sounds. The transmission shift s automatically to
position \\ . X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions.X
Shift th e transmission to position ] .X
Secur e th e vehicl e against rollin g away ( Y
page 161).X
Notify a qualified specialist workshop or breakdown service.
Auxiliary Batter y
Malfunction The auxiliary battery for th e automatic transmission is no longer bein g
charged. X
Visit a qualified specialist workshop .X
Unti l then , always set th e automatic transmission to position ]
before switching off th e engine.X
Befor e leaving th e vehicle, apply th e electric parking brake.
e The tailgat e is open
G WARNIN G
Whe n th e engin e is running, exhaust gase s can ente r th e vehicl e inte-
rio r if th e tailgat e is open .
There is a ris k of poisoning .X
Clos e th e tailgate.276
Display messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions
f The hoo d is open .
G WARNIN G
The open hoo d may bloc k your vie w when th e vehicl e is in motion .
There is a ris k of an accident.X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions.X
Secur e th e vehicl e against rollin g away ( Y
page 161).X
Clos e th e hood.
Q At least on e door is open .
A warning tone also sounds. X
Clos e all th e doors.
o 2nd Sea t Row , Lef t
Not Locked or 2nd
Sea t Row , Right Not
Locked The secon d row of seat s is no t engage d on th e left-han d or right-hand
side . X
Fold bac k th e secon d row of seat s until it engages.
o 3rd Sea t Row , Lef t
Not Locked or 3rd
Sea t Row , Lef t Not
Locked The third row of seat s is no t engage d on th e left-han d or right-hand
side . X
Fold bac k th e third row of seat s until it engages.

Display messages
Possible causes/consequences and P Solutions

Display messages
Possible causes/consequences and P Solutions

Safety systems Warning/
indicator
lamp Q Signal type
Possible causes/consequences and P Solutions
M'
Q ' (USA only), M (Canada only): the red brake system warning lamp is lit
while the engine is running.
A warning tone also sounds.
G WARNING
The brake boosting effect is malfunctioning and the braking characteristics may be
affected.
There is a risk of an accident. X
Pull over and stop the vehicle safely as soon as possible, paying attention to road
and traffic conditions. Do not continue driving under any circumstances. X
Secure the vehicle against rolling away ( Y
page 161).X
Consult a qualified specialist workshop. X
Observe the additional display messages in the multifunction display.
M'
Q ' (USA only), M (Canada only): the red brake system warning lamp is lit
while the engine is running.
A warning tone also sounds.
G WARNING
There is not enough brake fluid in the brake fluid reservoir.
There is a risk of an accident. X
Pull over and stop the vehicle safely as soon as possible, paying attention to road
and traffic conditions. Do not continue driving under any circumstances. X
Secure the vehicle against rolling away ( Y
page 161).X
Do not add brake fluid. Adding more will not correct the malfunction. X
Consult a qualified specialist workshop. X
Observe the additional display messages in the multifunction display.
'
Q USA only: the red brake system warning lamp is lit while the engine is running.
The multifunction display also shows a display message with the & symbol.
The brake pads/linings have reached their wear limit. X
Visit a qualified specialist workshop.Warning and indicator lamps in the instrument cluster 281
On-board computer and displays Z

Warning/
indicator
lamp Q Signal type
Possible causes/consequences and P Solutions
I$
Q I (USA only), $ (Canada only): the red indicator lamp for the electric
parking brake flashes or is lit and/or the yellow warning lamp for the electric
parking brake is lit. X
Observe the additional display messages in the multifunction display.
u
Q The red restraint system warning lamp is lit while the engine is running.
The restraint system is malfunctioning.
G WARNING
The air bags or Emergency Tensioning Devices may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury. X
Observe the additional display messages in the multifunction display. X
Drive on carefully. X
Contact a qualified specialist workshop and have the restraint system checked.
For further information about the restraint system, see ( Y
page 44).Warning and indicator lamps in the instrument cluster 287
On-board computer and displays Z