2022 MERCEDES-BENZ GLA SUV Owners Manual

Warning/indicator lamp Possible causes/consequences and
P Solutions
Consult a qualiNed specialist workshop.
M
Br
ake system warning lamp
(red) * The red brake warning lamp is lit while the vehicle is running.
Possible causes:
= The br
ake force boosting is malfunctioning and the braking characteristics may be aMected.
= There is insuPcient brake Ouid in the brake Ouid reservoir. 
Note the messages on the instrument display. &
WARNING Risk of accident and injur
y if brake force boosting is malfunctioning
If brake force boosting is malfunctioning, increased brake pedal force may be necessary for braking. The braking
c
haracteristics may be impaired. The braking distance can increase in emergency braking situations. 
Stop in a safe location immediately. Do not continue driving! 
Consult a q
ualiNed specialist workshop. &
WARNING Risk of an accident due t
o low brake Ouid level
If the brake Ouid le
vel is too low, the braking eMect and the braking characteristics may be impaired. 
Stop the vehicle as soon as possible, paying attention to road and tr
aPc conditions. Do not continue driving. 
Consult a q
ualiNed specialist workshop. 
Do not top up the brake Ouid.502
Display messages and warning/indicator lamps

Driving systems
Warning/indicator lamp Possible causes/consequences and
P Solutions
/
W arning 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 t here 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 (  pag
e 253).

Driving safety systems
Warning/indicator lamp Possible causes/consequences and
P Solutions
%
ABS w arning lamp * The yellow ABS warning lamp is lit while the vehicle is running.
ABS is malfunctioning.
If an additional w
arning tone sounds, EBD is malfunctioning.
Other driving systems and driving safety systems may also be malfunctioning. 
Note the messages on the instrument display. &
WARNING Ther
e is a risk of skidding if EBD or ABS is malfunctioning
The wheels may lock during braking.
The s
teerability 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 q
ualiNed specialist workshop.

Warning/indicator lamp Possible causes/consequences and
P Solutions

Warning/indicator lamp Possible causes/consequences and
P Solutions
If ESP n
canno t be activated, ESP n
is malfunctioning. 
Have ESP n
c
hecked immediately at a qualiNed specialist workshop. 
Observe the notes on deactivating ESP n
( pag
e 233).Tyre pressure monitor
Warning/indicator lamp Possible causes/consequences and
P Solutions
w
T
yre pressure monitoring
system warning lamp Oashes*The yellow tyre pressure monitor warning lamp (pressure loss/malfunction)
Oashes f
or approximately one minute and
then remains lit.
The tyre pressure monitoring system is malfunctioning. &
WARNING Ther
e is a risk of an accident if the tyre pressure monitoring system is malfunctioning
The tyre pressure monitoring system cannot issue a warning if there is pressure loss in one or more of the tyres.
T
yres with insuPcient tyre pressure may impair the driving characteristics as well as steering and braking. 
Have the tyre pressure monitoring system checked at a q
ualiNed specialist workshop. 506
Display messages and warning/indicator lamps

Warning/indicator lamp Possible causes/consequences and
P Solutions
w
T yre pressure monitoring
system warning lamp lights
up * The yellow tyre pressure monitoring system warning lamp (pressure loss/malfunction) is lit.
The tyre pressure monitoring system has detected tyre pressure loss in at least one of the tyres. &
WARNING Risk of an accident due t
o insuPcient tyre pressure
= The tyr
es can burst.
= The tyres 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 tyre pressures. 
Adjust the tyre pressure if necessary. 
Stop the vehicle in accordance with the tr
aPc conditions. 
Check the tyre pressure and the tyres. Display messages and warning/indicator lamps
507

1, 2, 3 ...
360° camer a
Care...................................................... 361
Function................................................ 270
Switching automatic mode on/oM
(reversing camera)................................. 273 A
A/C function A

ctivating/deactivating (operating
unit)....................................................... 163
MBUX.................................................... 163
ABS , Anti-lock braking system...................... 232
Acceleration Kickdown............................................... 197
Accident ERA-GLONASS test mode...................... 339
Accident, emergency call ............................. 336
Acoustic locking veriNcation signal, acti-
vating/deactivating........................................ 84
Acoustic presence indicator , Sound gen-
erator.......................................................... 171 Acoustic Vehicle Indication
, Sound g
ener-
ator.............................................................. 171
Active Blind Spot Assist Brake application................................... 263
Exit warning........................................... 262
Function................................................ 262
Trailer operation..................................... 263
Active bonnet, Pedestrian protection............ 350
Active bonnet (pedestrian protection) Resetting............................................... 350
Active Brake Assist Function................................................ 253
Setting................................................... 258
Active Distance Assist DISTRONIC Activate/deactivate variable limiter........ 246
Activating/deactivating.......................... 246
Active Emergency Stop Assist................ 253
Calling up a speed................................. 246
Function................................................ 243
Increasing/decreasing the speed........... 246
Route-based speed adaptation............... 248
Storing a speed...................................... 246
Active Lane Keeping Assist Activating/deactivating.......................... 267 Function................................................ 264
Se tting the sensitivity............................. 267
Trailer operation..................................... 264
Active light function ..................................... 146
Active Parking Assist Exiting a parking space.......................... 281
Function................................................ 278
Parking.................................................. 279
Active Service System PLUS,
ASSYST PLUS.............................................. 348
Active Speed Limit Assist ............................. 247
Active Steering Assist Activating/deactivating.......................... 252
Active Emergency Stop Assist................ 253
Function................................................ 251
Adaptive brake lights .................................... 237
Adaptive cruise control , Active Distance
Assist DISTRONIC........................................ 248
Adaptive Highbeam Assist , High beam
Activating/deactivating.......................... 149
Function................................................ 148
Adaptive Highbeam Assist Plus Function................................................ 149 508
Index

Switching on/oM
.................................... 150
AdBlue n
Additives................................................ 414
Capacity................................................ 415
Notes..................................................... 203
Purity..................................................... 414
Topping up............................................. 204
Additional door lock ....................................... 86
Additives AdBlue n
......................................... 204, 414
Engine oil............................................... 415
Fuel....................................................... 412
Aser-sales service, ASSYST PLUS................. 348
Air conditioning menu Air distribution....................................... 164
Calling up.............................................. 163
Climate control...................................... 163
Stationary heater/ventilation................. 169
Air distribution MBUX multimedia system....................... 164
Setting................................................... 162
Air inlet ........................................................ 357
Air pressure ................................................. 388 Air vents
Se tting................................................... 169
Air/water duct............................................. 357
Airbag, Occupant safety Automatic front passenger airbag shut
oM............................................................ 57 Deployment............................................. 48
Front airbag............................................. 53
Overview.................................................. 53
PASSENGER AIR BAG indicator lamps...... 58
Protection................................................ 54
Reduced protection.................................. 56
Warning lamp........................................... 48
AirOow Setting................................................... 162
Alarm system , ATA....................................... 104
All-wheel drive, 4MATIC................................ 198
Ambient lighting ........................................... 151
Angle of approach/departure ....................... 420
Animals, Pets in the vehicle............................ 81
Anti-lock braking system , ABS...................... 232
Anti-thes alarm system , ATA......................... 104 Anti-thes
protection, ATA
Additional door lock................................. 86
Immobiliser............................................ 104
Anticipatory operating-mode strategy ,
Route-based................................................. 189
Approval numbers ........................................ 407
Apps Mercedes me calls................................. 326
Mercedes me connect........................... 330
Assembly licence plate, front .......................... 29
Assistance system , Driving safety system..... 231
ASSYST PLUS Battery disconnection periods................ 349
Service interval display.......................... 348
Service requirements............................. 348
ATA, Anti-thes protection
Deactivating the alarm........................... 105
Function................................................ 104
Interior protection.................................. 106
Tow-away protection.............................. 105
ATTENTION ASSIST Function................................................ 238
Setting................................................... 240 Index
509