Page 366 of 469
Key
Display messages
Possible causes/consequences and M
MSolutions
À Replace key See Owner's
Manual *O
nly a few or no authorisations remain forst arting the engine. #
Order a new digital vehicle keyst icke r from a Mercedes-Benz service centre.
Á
Replace key *T
hekey needs tobe replaced. #
Consult a qualified specialist workshop.
Á Change key batteries *T
hekey bat tery is dischar ged. #
Replace the battery (/ page73). Display messages and
warning/indicator lamps 363
Page 367 of 469

Display messages
Possible causes/consequences and M
MSolutions
Á Key not detected (white dis‐
play message) *T
hekey is cur rently und etected. #
Change the location of theke y in theve hicle. #
Ifth eke y is still not recognised, place it in the slot forst arting with theke y (/ page152).
Á Key not detected (red dis‐
play messa ge) *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: #
Stop theve hicle immediately in accordance with the traf fic conditions. #
Place theke y in the slot forst arting the engine with theke y (/ page152).
Place the key in the
marked space See Owner's
Manual *K
eydetection is malfunctioning. #
Change the location of theke y in theve hicle. #
Place theke y in the slot forst arting the engine with theke y (/ page152). 364
Displaymessa ges and warning/indicator lamps
Page 368 of 469
Soft
top Display messages
Possible causes/consequences and M
MSolutions
K While stationary, apply the
brake before operating the
soft top *T
hevehicle is stationary and you are trying toopen or close the soft top. #
Depress the brake pedal. #
Push or pull the soft top switch again until the soft top is fully open or closed.
K Soft top Operation only up
to 60 km/h *I
fyo u drive at speeds greater than 60 km/h, you cannot open or close the soft top. #
Do not drive at speeds greater than 60 km/h. #
Fully open or close the soft top.
K Soft top lowering *T
he soft top is not fully opened or closed. The hydraulics are depressurising. #
Fully open or close the soft top. Display messages and
warning/indicator lamps 365
Page 369 of 469
Display messages
Possible causes/consequences and M
MSolutions
K Open/close soft top com-
pletely *T
he soft top is not loc ked. If you drive at speeds greaterth an 60 km/h, you cannot open or close the soft top. #
Do not drive at speeds greater than 60 km/h. #
Fully open or close the soft top.
K 12 V battery See Owner's
Manual *T
he on-board electrical sy stem voltage is too lo w. #
Start the engine.
J
Close boot separator *T
he boot separator is open. #
Close the boot separator. 366
Display messages and warning/indicator lamps
Page 370 of 469
Lights
Display messages
Possible causes/consequences and M
MSolutions
: Left dipped beam (examp le) *T
he cor responding light source is defective. #
Drive on carefully. #
Consult a qualified specialist workshop immediatel y.
% LED light sources: the display message forth e cor responding light appears only when allthe light-emitting
diodes in the light are faulty.
: Malfunction See Owner's
Manual *T
heexterior lighting is malfunctioning. #
Consult a qualified specialist workshop.
* Ve hicles with a trailer hitch: a fuse may haveblown. #
Stop theve hicle in accordance with the tra ffic conditions. #
Check the fuses and replace them if necessary (/ page 322).
:
Automatic driving lights
inoperative *T
he light sensor is malfunctioning. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 367
Page 371 of 469
Display messages
Possible causes/consequences and M
MSolutions
: Active Light System inoper-
ative *T
he active headlamp s are malfunctioning. #
Consult a qualified specialist workshop.
: Switch on headlamps *Y
ou are driving without lo w-beam headlamps. #
Turn the light switch totheL orà position.
:
Switch off lights *Y
ou are leaving theve hicle and the lights are still switched on. #
Turn the light switch totheà position.
: Intelligent Light System
inoperative *T
he Intelligent Light Sy stem is malfunctioning. The lighting sy stem continues tofunction proper lywithout the func‐
tions of the Intelligent Light Sy stem. #
Consult a qualified specialist workshop. 368
Display messages and warning/indicator lamps
Page 372 of 469

Display messages
Possible causes/consequences and M
MSolutions
Adaptive Highbeam Assist
currently unavailable See
Owner's Manual *A
daptive Highbeam Assist is temp orarily una vailable.
The sy stem limits ha vebeen reached (/ page127).
On ce the cause of the problem is no longer present, the sy stem will be available again. The Adaptive Highbeam
Assist available again display message will appear. #
Drive on.
Adaptive Highbeam Assist
inoperative *A
daptive Highbeam Assist is malfunctioning. #
Consult a qualified specialist workshop.
Adaptive Highbeam Assist
Plus currently unavailable
See Owner's Manual *A
daptive Highbeam Assist Plus is temp orarily una vailable.
The sy stem limits ha vebeen reached (/ page128).
On ce the cause of the problem is no longer present, the sy stem will be available again. The Adaptive Highbeam
Assist Plus available again display message will appear. #
Drive on.
Adaptive Highbeam Assist
Plus inoperative *A
daptive Highbeam Assist Plus is malfunctioning. #
Consult a qualified specialist workshop.
Hazard warning lamps mal-
functioning *T
he hazard warning lamp switch is malfunctioning. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 369
Page 373 of 469
Climate control
Displ
aymessages
Possible causes/consequences and M
MSolutions
& inoperative See Owner's
Man. *T
hestationary heater is temp orarily malfunctioning. #
When theve hicle is stationary on a le vel sur face and the engine has cooled down, make up tofour attem ptsto
switch on thest ationary heater, waiting se veral minutes between each attem pt. #
Ifth est ationary heater does not swit chon, consult a qualified specialist workshop.
&
inoperative Battery low *T
he on-board electrical sy stem voltage is too lo w.
The stationary heater has swit ched itself off. #
Drive an extended di stance until the battery has reached a suf ficient charge leve l again.
&
inoperative Refuel vehicle *T
here is too little fuel in the fuel tank. The stationary heater cannot be swit ched on. #
Refuel theve hicle. 37 0
Displaymessa ges and warning/indicator lamps