lights MERCEDES-BENZ GLA 2016 Service Manual

Monitoring range of the sensors
In particular, the detection of obstacles can
be impaired if: R
there is dirt on the sensors or anything else
covering the sensors R
there is poor visibility, e.g. due to fog, heavy
rain or snow R
a narrow vehicle traveling in front, e.g. a
motorbike or bicycle R
the road has very wide lanes R
the road has narrow lanes R
you are not driving in the middle of the lane R
there are barriers or similar lane borders
Vehicles in the monitoring range are then not
indicated.
Blind Spot Assist monitors the area up to 10 ft
(3 m) behind your vehicle and directly next to
your vehicle, as shown in the diagram.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may
be indicated, especially if the vehicles are not
driving in the middle of their lane. This may be
the case if the vehicles are driving on the inner
side of their lane. Due to the nature of the system: R
warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders. R
warnings may be interrupted when driving
alongside particularly long vehicles, e.g.
trucks, for a prolonged time.
Warning display
C
Warning display
Blind Spot Assist is not active at speeds below
approximately 20 mph (30 km/h). Vehicles in
the monitoring range are then not indicated.
When Blind Spot Assist is activated, indicator
lamp C in the exterior mirrors lights up yel-
low at speeds of up to 20 mph (30 km/h). At
speeds above 20 mph (30 km/h), the indica-
tor lamp goes out and Blind Spot Assist is
operational.
If a vehicle is detected within the blind spot
monitoring range at speeds above 20 mph
(30 km/h), warning lamp C on the corre-
sponding side lights up red. This warning is
always emitted when a vehicle enters the
blind spot monitoring range from behind or
from the side. When you overtake a vehicle,
the warning only occurs if the difference in
speed is less than 7 mph (12 km/h).
The yellow indicator lamp goes out if reverse
gear is engaged. In this event, Blind Spot
Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light.214
Driving systems
Driving and parking

multifunction display instead of the outside
temperature.
The speed display is inverse to the speedom-
eter. X
Press the Y or e button on the steer-
ing wheel to select the Sett.
menu.X
Press the d or c button to select the
Instrument Cluster
submenu.X
Press v to confirm.X
Press the d or c button to select the
Speedometer [km/h]
or Speedometer
[mph] function.
You will see the selected setting: On
or Off .X
Press the v button to save the setting.
Selecting permanent display
The Permanent Display:
function allows
you to choose whether the multifunction dis-
play always shows the outside temperature or
the speed.
The speed display is inverse to the speedom-
eter. X
Press the Y or e button on the steer-
ing wheel to select the Sett.
menu.X
Press the d or c button to select the
Instrument Cluster
submenu.X
Press v to confirm.X
Press the d or c button to select the
Permanent Display:
function.
The current setting Outside
Temperature
or Speedometer [km/h] / Speedometer
[mph] appears.X
Press the v button to save the setting.
Lights
Switching the daytime running lamps on/
off
This function is not available in Canada. X
Press the Y or e button on the steer-
ing wheel to select the Sett.
menu.X
Press the d or c button to select the
Light
submenu.X
Press v to confirm. X
Press the d or c button to select the
Daytime Running Lights
function.
If the Daytime Running Lights
function
has been switched on, the multifunction
display shows the cone of light and the

X
Press the d or c button to select the
Acoustic Lock
function.
If the Acoustic
Lock function is activated,
the multifunction display shows the 7
symbol in orange. X
Press the v button to save the setting.
Convenience Switching the fold-in mirrors when lock-
ing feature on/off
This function is only available in Canada.
This function is only available when the vehi-
cle is equipped with the electrical fold-in func-
tion.
When you activate the Auto. Mirror Fold‐
ing function, the exterior mirrors are folded
in when the vehicle is locked. If you unlock the
vehicle and then open the driver's or front-
passenger door, the exterior mirrors fold out
again.
If you have switched on the Auto. Mirror
Folding function and you fold in the exterior
mirrors using the button on the door
( Y
page 109), they will not fold out automat-
ically. The exterior mirrors can then only be
folded out using the button on the door. X
Press the Y or e button on the steer-
ing wheel to select the Sett.
menu.X
Press the d or c button to select the
Convenience
submenu.X
Press v to confirm.X
Press the d or c button to select the
Auto. Mirror Folding
function.
If the Auto. Mirror Folding
function is
switched on, the multifunction display
shows the exterior mirror in orange. X
Press the v button to save the setting.
Restoring the factory settings X
Press the Y or e button on the steer-
ing wheel to select the Sett.
menu.X
Press the d or c button to select the
Factory Setting
submenu. X
Press v to confirm.
The Reset All Settings?
function
appears. X
Press the d or c button to select No
or Yes . X
Press the v button to confirm the selec-
tion.
If you have selected Yes , the multifunction
display shows a confirmation message.
For safety reasons, the Daytime Running
Lights function in the Light submenu is only
reset if the vehicle is stationary.
AMG menu (Mercedes-AMG vehicles)
WARMUP
C
Digital speedometer D
Gear indicator

Display messages
Possible causes/consequences and P Solutions
I (USA
only)
$ (Canada
only)
Tur n On the Igni‐
tio n to Releas e
the Parkin g Brake The red I (US A only) or $ (Canada only) indicato r lamp
lights up.
You attempte d to release th e electric parkin g brak e while th e igni-
tion was switched off. X
SmartKey: tur n th e SmartKey to position 1 in th e ignition lock.X
KEYLESS-GO: switch on th e ignition .
I (USA
only)
$ (Canada
only)
Please Releas e
Parkin g Brake The red I (US A only) or $ (Canada only) indicato r lamp
flashes and a warnin g tone sounds. A condition fo r automati c
release of th e electric parkin g brak e is no t fulfilled ( Y
page 173).
You are drivin g wit h th e electric parkin g brak e applied.X
Releas e th e electric parkin g brak e manually.
The red I (US A only) or $ (Canada only) indicato r lamp
flashes and a warnin g tone sounds.
You are usin g th e electric parkin g brak e fo r emergenc y brakin g
( Y
page 173).
I (USA
only)
$ (Canada
only)
Parkin g Brake See
Operator' s Manual The yello w $ warnin g lamp lights up.
The electric parkin g brak e is malfunctioning.
To apply: X
Switc h th e ignition off. X
Press th e electric parkin g brak e handle fo r at leas t te n seconds.X
Shift th e transmissio n to position P .X
Consult a qualified specialist workshop .
The yello w $ warnin g lamp and th e red I (US A only)
or $ (Canada only) indicato r lamp ligh t up.
The electric parkin g brak e is malfunctioning.
To release: X
Switc h of f th e ignition and tur n it bac k on .X
Releas e th e electric parkin g brak e manually.
or X
Releas e th e electric parkin g brak e automatically ( Y
page 173).
If th e electric parkin g brak e still canno t be released:X
Do no t drive on .X
Consult a qualified specialist workshop .Display messages 23 9
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
The red I (US A only) or $ (Canada only) indicato r lamp
flashes and th e yello w $ warnin g lamp lights up.
The electric parkin g brak e is malfunctioning.
To release: X
Switc h of f th e ignition and tur n it bac k on .X
Releas e th e electric parkin g brak e manually.
To apply: X
Switc h of f th e ignition and tur n it bac k on .X
Apply th e electric parkin g brak e manually.
If th e red I (US A only) or $ (Canada only) indicato r lamp
continues to flash: X
Do no t drive on .X
Secur e th e vehicl e against rollin g away ( Y
page 364).X
Shift th e transmissio n to position P .X
Tur n th e fron t wheels toward s th e curb.X
Consult a qualified specialist workshop .
The yello w $ warnin g lamp lights up. The red I (US A only)
or $ (Canada only) indicato r lamp flashes fo r about te n sec -
onds after th e electric parkin g brak e has been applied or released.
It then goe s out or remain s lit .
The electric parkin g brak e is malfunctioning.X
Switc h of f th e ignition and tur n it bac k on .X
Apply th e electric parkin g brake.
If it is no t possibl e to engage th e electric parkin g brake:X
Shift th e transmissio n to position P .X
Visit a qualified specialist workshop .
If it is no t possibl e to release th e electric parkin g brak e manually:X
Releas e th e electric parkin g brak e automatically ( Y
page 173).
If th e electric parkin g brak e still canno t be released:X
Consult a qualified specialist workshop .240
Display messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions
The yello w $ warnin g lamp lights up. If you manually apply or
release th e electric parkin g brake, th e red I (US A only) or $
(Canada only) indicato r lamp flashes .
The electric parkin g brak e is malfunctioning. It is no t possibl e to
apply th e electric parkin g brak e manually.X
Shift th e selector lever to P , as th e electric parkin g brak e is no t
applied automatically. X
Visit a qualified specialist workshop .
I (USA
only)
$ (Canada
only)
Parkin g Brake Inop‐
erativ e The yello w $ warnin g lamp lights up. The red I (US A only)
or $ (Canada only) indicato r lamp flashes fo r about te n sec -
onds after th e electric parkin g brak e has been applied or released.
It then goe s out or remain s lit .
The electric parkin g brak e is malfunctioning, e.g. because of over-
voltag e or undervoltage. X
Remove th e caus e fo r th e overvoltage or undervoltage, e.g. by
chargin g th e battery or restarting th e engine.X
Engage or release th e electric parkin g brake.
If it remain s impossible to apply or release th e electric parkin g
brake: X
Switc h of f th e ignition and tur n it bac k on .X
Engage or release th e electric parkin g brake.
If th e electric parkin g brak e still canno t be released:X
Consult a qualified specialist workshop .
If th e electric parkin g brak e still canno t be applied:X
Visit a qualified specialist workshop .
The yello w $ warnin g lamp lights up and th e red I (US A
only) or $ (Canada only) indicato r lamp flashes .
It is no t possibl e to apply th e electric parkin g brak e manually.X
Shift th e transmissio n to position P .X
Visit a qualified specialist workshop .Display messages 24 1
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
Collision Preven ‐
tio n Assist Plu s
Inoperative COLLISION PREVENTION ASSIST PLU S is temporarily inoperative
due to a malfunction . Adaptive Brake Assis t may also hav e failed.X
Visit a qualified specialist workshop immediately.
Radar Sensor s
Dirty See Opera‐
tor's Manual At leas t on e of th e following drivin g systems or drivin g safet y sys-
tems is temporarily restricted or inoperative: R
COLLISION PREVENTION ASSIST PLU SR
DISTRONIC PLU S
Possibl e causes are: R
th e sensor s in th e radiato r trim and/o r in th e bumpers are dirtyR
th e function of th e drivin g system and/o r drivin g safet y system
is impaire d due to heav y rain or snow.
A warnin g tone also sounds.
Whe n th e causes state d abov e no longer apply, th e display mes -
sage disappears. Al l drivin g systems and drivin g safet y systems
are operative again .
If th e display message does no t disappear :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 171).X
Switc h of f th e engine.X
Clean th e sensor s in th e following location s ( Y
page 317):R
in th e radiato r trim R
in th e fron t bumper R
in th e rear bumper, particularl y in th e middle of th e rear
bumper X
Restart th e engine.
The display message disappears.
u SRS Malfunction
Servic e Required The restrain t system is faulty. The u warnin g lamp also lights
up in th e instrumen t cluster.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in th e event of an accident, may no t be
triggered .
There is an increase d ris k of injury.X
Visit a qualified specialist workshop immediately.
Fo r further information about th e restrain t system, see
( Y
page 42) . Display messages 24 3
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
u Front Lef t Malfunc‐
tio n Servic e
Required or Front
Right Malfunction
Servic e Required The restrain t system has malfunctioned at th e fron t on th e lef t or
right . The u warnin g lamp also lights up in th e instrumen t clus-
ter.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in th e event of an accident, may no t be
triggered .
There is an increase d ris k of injury.X
Visit a qualified specialist workshop immediately.
u Rea r Lef t Malfunc‐
tio n Servic e
Required or Rea r
Right Malfunction
Servic e Required The rear left-han d or right-hand restrain t system has malfunc -
tioned. The u warnin g lamp also lights up in th e instrumen t
cluster.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in th e event of an accident, may no t be
triggered .
There is an increase d ris k of injury.X
Visit a qualified specialist workshop immediately.
u Lef t Sid e Curtai n
Airbag Malfunction
Servic e Required
or Right Sid e Cur ‐
tai n Airbag Mal ‐
function Servic e
Required There is a malfunction in th e left-han d or right-hand window cur -
tai n air bag. The u warnin g lamp also lights up in th e instrumen t
cluster.
G WARNIN G
The lef t or right window curtai n air bag may either be triggered
unintentionally or, in th e event of an accident, may no t be trig-
gered.
There is an increase d ris k of injury.X
Visit a qualified specialist workshop immediately.244
Display messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions
Seat unoccupied and ignition switched on :R
a self-diagnosi s is carrie d out . The PASSENGER AI R BA G OF F
and PASSENGER AI R BA G ON indicato r lamp s mus t ligh t up
simultaneousl y fo r approximately six secondsR
th e PASSENGER AI R BA G OF F indicato r lamp mus t then ligh t
up and remain lit after th e self-diagnosis. If th e indicato r lamp
is on , OCS has deactivated th e front-passenger fron t air bag
and front-passenger knee bag ( Y
page 51 )R
th e Front Passenger Air Bag Enable d See Opera‐
tor's Manual or Front Passenger Air Bag Disabled
See Operator' s Manual display message s mus t no t be
shown in th e multifunction displayX
Wait fo r a period of at leas t 60 seconds until th e necessar y sys-
te m checks hav e been completed.X
Mak e sur e that th e display message s do no t appea r in th e mul-
tifunction display.
If these condition s are fulfilled , th e front-passenger seat can be
occupied again . Whether th e PASSENGER AI R BA G OF F or ON
indicato r lamp remain s lit or goe s out depend s on how OCS clas-
sifies th e occupant .
If th e condition s are no t fulfilled , th e system is no t operating cor-
rectly. X
Visit a qualified specialist workshop immediately.
Fo r further information about th e Occupant Classification System,
see ( Y
page 51).
Lights
i Vehicles wit h LE D bulbs in th e ligh t clusters :
The display message fo r th e correspondin g lamp only appears when all of th e LEDs in th e
lamp hav e failed. Display messages 24 7
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
I Check Front Lef t
Sidemarke r Lam p or
Check Front Right
Sidemarke r Lam p The fron t left-han d or fron t right-hand side marke r lamp is faulty.X
Visit a qualified specialist workshop .
I Check Rea r Lef t
Sidemarke r Lam p or
Check Rea r Right
Sidemarke r Lam p The rear left-han d or rear right-hand side marke r lamp is faulty.X
Visit a qualified specialist workshop .
I Check Lef t Daytim e
Runnin g Light or
Check Right Day ‐
tim e Runnin g Light The lef t or right-hand daytime running lamp is faulty. X
Chec k whether you are permitte d to replac e th e bulb yourself
( Y
page 121).
or X
Visit a qualified specialist workshop .
I Active Headlamps
Inoperative The active ligh t function is faulty.X
Visit a qualified specialist workshop .
I Malfunction See
Operator' s Manual The exterio r lighting is defective. X
Visit a qualified specialist workshop .
I Aut o Lam p Function
Inoperative The ligh t sensor is defective. X
Visit a qualified specialist workshop .
I Switch Off Lights The lights are still switched on when you leav e th e vehicle. A
warnin g tone also sounds. X
Tur n th e ligh t switch to th e X position .
I Switch On Headlamps You are drivin g wit h low-beam headlamp s switched off.X
Tur n th e ligh t switch to th e X or X position .250
Display messages
On-board computer and displays