2023 MERCEDES-BENZ GLS Owners Manual

Driving systemsWarning/indicator lampPossible causes/consequences and P Solutions
/
Warning lamp for distance
warning function
*The red distance warning lamp lights up while the vehicle is in motion.The distance to the vehicle in front is too small for the speed selected.
If there is an additional warning tone, you are approaching an obstacle at too high a speed.
Be prepared to brake immediately.Increase the distance.
Function of Active Brake Assist (  page 235).

Warning/indicator lampPossible causes/consequences and P Solutions

Driving safety systemsWarning/indicator lampPossible causes/consequences and P Solutions
%
ABS warning lamp
*The yellow ABS warning lamp is lit while the vehicle is running.ABS is malfunctioning.
If an additional warning tone sounds, EBD is malfunctioning.
Other driving systems and driving safety systems may also be malfunctioning.
Note the messages on the instrument display.&WARNING There is a risk of skidding if EBD or ABS is malfunctioning
The wheels may lock during braking.
The steerability and braking characteristics are heavily impaired and the braking distance may increase. In addition, other driving safety systems are switched oM.
Drive on carefully.Have the brake system checked immediately at a qualiNed specialist workshop.

Warning/indicator lampPossible causes/consequences and P Solutions

Warning/indicator lampPossible causes/consequences and P SolutionsIf ESP n
cannot be activated, ESP n
is malfunctioning.Have ESP n
checked immediately at a qualiNed specialist workshop.Observe the notes on deactivating ESP n
( page 214).Tire pressure monitorWarning/indicator lampPossible causes/consequences and P Solutions
w
Tire pressure monitoring
system warning lamp Oashes
*The yellow tire pressure monitor warning lamp (pressure loss/malfunction) Oashes for approximately one minute and
then remains lit.
The tire pressure monitoring system is malfunctioning.
&WARNING There is a risk of an accident if the tire pressure monitoring system is malfunctioning
The tire pressure monitoring system cannot issue a warning if there is pressure loss in one or more of the tires.
Tires with insuPcient tire pressure may impair the driving characteristics as well as steering and braking.
Have the tire pressure monitoring system checked at a qualiNed specialist workshop.Display messages and warning/indicator lamps499

Warning/indicator lampPossible causes/consequences and P Solutions
w
Tire pressure monitoring
system warning lamp lights
up
*The yellow tire pressure monitoring system warning lamp (pressure loss/malfunction) is lit.The tire pressure monitoring system has detected tire pressure loss in at least one of the tires.&WARNING Risk of an accident due to insuPcient tire pressure
=
The tires can burst.
= The tires can wear excessively and/or unevenly.
= The driving characteristics as well as the steering and braking may be greatly impaired.
You could then lose control of the vehicle.
Observe the recommended tire pressures.Adjust the tire pressure if necessary.Stop the vehicle in accordance with the traPc conditions.Check the tire pressure and the tires.500Display messages and warning/indicator lamps

1, 2, 3 ...
(SmartKey) battery ......................................... 73
48 V on-board electrical system Operating safety...................................... 25
360° Camera Care...................................................... 350
Function................................................ 265
A
A/C function Activating/deactivating (operating
unit)....................................................... 167
MBUX.................................................... 168
ABS , Anti-lock braking system...................... 213
Acceleration Kickdown............................................... 197
Optimized acceleration.......................... 179
Accident, emergency call ............................. 326
Activating/deactivating the acoustic lock-
ing veriNcation signal...................................... 72
Active Blind Spot Assist Brake application................................... 245
Exit warning........................................... 244
Function................................................ 244 Towing a trailer...................................... 245
Active Brake Assist Function................................................ 235
Setting................................................... 239
Active Distance Assist DISTRONIC Activating/deactivating.......................... 224
Active Emergency Stop Assist................ 233
Active Lane Change Assist..................... 234
Calling up a speed................................. 224
Function................................................ 222
Increases/decreases the speed............. 224
Route-based speed adaptation............... 227
Storing a speed...................................... 224
Active headlamps ......................................... 153
Active Lane Change Assist Activating/deactivating.......................... 235
Function................................................ 234
Active Lane Keeping Assist Activating/deactivating.......................... 248
Function................................................ 246
Setting the sensitivity............................. 248
Towing a trailer...................................... 246Active Parking Assist Exiting a parking space.......................... 276
Function................................................ 273
Parking.................................................. 275
Active Service System PLUS ,
ASSYST PLUS.............................................. 337
Active Speed Limit Assist ............................. 226
Active Steering Assist Activating/deactivating.......................... 233
Active Emergency Stop Assist................ 233
Active Lane Change Assist..................... 234
Function................................................ 231
Active Stop-and-Go Assist Function................................................ 228
Active TraPc Jam Assist
Activating/deactivating.......................... 229
Adaptive cruise control , Active Distance
Assist DISTRONIC........................................ 227
Adaptive Highbeam Assist , High beam
Activating/deactivating.......................... 154
Function................................................ 153
Additional cushion Leg rest................................................. 105Index501

Rear passenger compartment headrestraint................................................. 112
Additives Engine oil............................................... 415
Fuel....................................................... 415
Aser-sales service, ASSYST PLUS................. 337
Air bag , Occupant safety
Automatic front passenger air bag shu
toM .......................................................... 48
Cushion bag............................................. 44
Deployment............................................. 39
Front air bag............................................ 44
Overview.................................................. 44
PASSENGER AIR BAG indicator lamps...... 49
Reduced protection.................................. 47
Warning lamp........................................... 39
Air conditioning menu Air distribution....................................... 168
Calling up.............................................. 167
Climate control...................................... 168
Ionization............................................... 170
Rear passenger compartment climate
control................................................... 168Air distribution MBUX multimedia system....................... 168
Setting................................................... 166
Air freshener system .................................... 170
Air inlet ........................................................ 345
Air pressure ................................................. 375
Air suspension , AIRMATIC............................ 248
Air vents Glove box............................................... 173
Setting................................................... 171
Air/water duct ............................................. 345
Airbag Protection................................................ 45
AirOow Setting................................................... 166
AIRMATIC Air suspension....................................... 248
Setting entering/exiting level................. 253
Setting the vehicle level......................... 250
Vehicle levels......................................... 248
Alarm system , ATA......................................... 95
All-wheel drive , 4MATIC................................ 200Ambient lighting ........................................... 156
Animals , Pets in the vehicle............................ 69
Anti-lock braking system , ABS...................... 213
Anti-thes alarm system , ATA........................... 95
Anti-thes protection , ATA
Immobilizer.............................................. 94
Approval numbers ........................................ 410
Apps Mercedes me calls................................. 318
Mercedes me connect........................... 321
Assistance system , Driving safety system..... 212
ASSYST PLUS Battery disconnection periods................ 338
Service interval display.......................... 337
Service requirements............................. 337
ATA Deactivating the alarm............................. 95Function.................................................. 95Interior protection.............................. 96, 97Tow-away alarm....................................... 96Tow-away protection................................ 96
ATTENTION ASSIST Function................................................ 218502Index