2020 MERCEDES-BENZ CLS COUPE warning light

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
ü Seat belt warning lamp
lights up *T
he red seat belt warning lamp lights up once the engine has star ted.
In addition, an intermittent warning tone may sound.
The red seat belt warning lamp reminds the driver and front passenger tofast entheir seat belts. #
Fasten your seat belt (/ page 40).
If yo u ha veplaced objects on the front passenger seat, there d seat belt warning lamp may remain lit. Ve
hicle Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Ù Po we rst eering warning
lamp (red) *T
he red po werst eering sy stem warning lamp is lit while the engine is running.
The po wer assi stance or thesteering itself is malfunctioning. &
WA RNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do
not continue driving under any circums tances. #
Consult a qualified specialist workshop. #
Notethe messages on the multifunction displa y.416
Displaymessa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Start the engine thre eto four times af terre fuelling.
If th eye llow engine diagnosis warning lamp goes out, emer gency operation mode is cancelled. The vehicle need
not be checked.
#
Elect rical fault warning
lamp *T
hered elect rical fault warning lamp is lit.
There is a fault in the electrics. #
Notethe messages on the multifunction displa y.
8
Fu elreser vewarning lamp
lights up *T
he yellow fuel reser ve wa rning lamp lights up while the engine is running.
The fuel supp lyhas dropped into there ser verange. #
Refuel. 420
Displaymessa ges and warning/indicator lamps

Brakes
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
! Elect ric pa rking brake indi‐
cator lamp (red)
!
The elect ric pa rking brake
(yellow) indicator lamp *T
he red elect ric pa rking brake indicator lamp flashes or is lit.
The yellow elect ric pa rking brake indicator lamp also lights up in theev ent of a malfunction. #
Notethe messages on the multifunction displa y.
J
Brake sy stem warning lamp
(yellow) *T
he yellow brake sy stem warning lamp is lit while the engine is running. &
WA RNING Risk of an accident due toa brake sy stem malfunction
If th e brake sy stem is malfunctioning, braking characteristics may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Adjust your speed and drive on carefull y,leaving a suitable dis tance totheve hicle in front. #
Ifth e multifunction display sho wsa display message, obse rve it. Display messages and
warning/indicator lamps 421

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Do not top up the brake fluid. Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
æ Ac tive Brake Assi stwa rning
lamp *T
he white Active Brake Assi stwa rning lamp is lit.
The sy stem is switched off or una vailable.
L Wa rning lamp for dis tance
wa rning function *T
he red dis tance warning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obs tacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the dis tance.
Fu nction of Active Brake Assi st (/ page 200). Display messages and
warning/indicator lamps 423

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. ÷
ESP ®
wa rning lamp flashes *
The yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
One or more wheels has reached its grip limit (/ page181). #
Adapt your driving style to suit thero ad and weather conditions.
÷ ESP ®
wa rning lamp lights
up *
The yellow ESP ®
wa rning lamp is lit while the engine is running.
ESP ®
is malfunctioning.
Other driving sy stems and driving saf ety sy stems (e.g. BAS) may also be malfunctioning. #
Notethe messages on the multifunction displa y. &
WA RNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilisation. In addition, other driving saf ety sy stems
are switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified specialist workshop. Display messages and
warning/indicator lamps 425

Ty
re pressure moni tor Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressure monitoring
sy stem warning lamp
fl ashes *The
yellow tyre pressure monitor warning lamp (pressure loss/malfunction) flashes for appro ximately one minu te
and then remains lit.
The tyre pressu remonitor is malfunctioning. &
WA RNING Thereis a risk of an accident if the tyre pressure monitoring sy stem is malfunctioning
The tyre pressure monitoring sy stem cann otissue a warning if there is pressure loss in one or more of the tyres.
Ty res with insuf ficient tyre pressure may impair the driving characteristics as well as steering and braking. #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. h
Ty re pressure monitoring
sy stem warning lamp lights
up *T
he yellow tyre pressure monitoring sy stem warning lamp (pressure loss/malfunction) is lit.
The tyre pressure monitoring sy stem has de tected tyre pressure loss in at least one of the tyres. &
WA RNING Risk of an accident due toinsuf ficient tyre pressure
R The tyres can bu rst.
R The tyres can wearexc essively and/or une venly.
R The driving characteristics as well as thesteering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. Display messages and
warning/indicator lamps 427

Fu
nction .............................................. 209
Sy stem limitations ...............................2 09
Blo wer
see Climate control
BlueTEC see AdBlue ®
Bonn et
Re setting (active bonnet) .................... 293
Boot lid Closing .................................................. 79
HANDS-FREE ACCESS .......................... .81
Locking separa tely ................................ 83
Opening ................................................ .78
Opening dimensions ............................3 56
Brake Assist Sy stem
see BAS (Brake Assi stSystem)
Brake fluid Notes ................................................... 354
Brake forc e distribution
EBD (Elect ronic Brake forc e Distribu‐
tion) ..................................................... 183
Brakes ABS (Anti-lock Braking Sy stem) ........... 181Ac
tive Brake Assi st.............................. 200
Ad aptive brake lights .......................... .185
BA S (Brake Assi stSystem) ...................1 81
Driving tips .......................................... 15 3
EBD (Electronic Brake forc e Distribu‐
tion) ..................................................... 183
HOLD function .................................... .184
Limited braking ef fect (salt-trea ted
ro ads) .................................................. 15 3
New/replaced brakepads/brake
discs .................................................... 151
Ru nning-in no tes ..................................1 51
Braking assistance see BAS (Brake Assi stSystem)
Breakdown Overview of the help functions .............. 16
To w- starting ........................................ 324
To wing away ........................................ 320
Tr ansporting theve hicle ......................3 22
Wheel change ...................................... 337
Breakdown see Flat tyre
Buttons Steering wheel .....................................2 45 C
Calls Mercedes me ....................................... 273
Camera see 360° Camera
see Reversing camera
Car key
see Key
Car wash
see Care
Car wash (care) ....................................... 299
Car-to-X-Communication Displaying hazard warnings ................ .267
Care .......................................................... 304
360° camera ...................................... .302
Air-water duct ...................................... 299
Car wash ............................................. 299
Carpet .................................................3 04
Decorative foil .................................... .301
Displ ay................................................ 304
Exterior lighting ................................... 302
High-pressure cleaner ......................... 300
Matt finish ........................................... 301 Index
433

Á
Key not de tected (white displ ay
messa ge).............................................3 64
: Left dipped beam (e xamp le) ...... .366
6 Left wind owbag malfunction
Consult workshop (e xample)................ 361
¢ Lowe ring .................................... 395
: Malfunction See Owner's Man‐
ual ....................................................... 366
ð Maximum speed exceeded ......... 388
Ø ................................................... 409
ç Off..............................................3 87
ë Off..............................................3 84
ï Operation only possible in
transmission position P .......................370
! Parking brake See Owner's
Manual ................................................ 380
É Please reduce speed .................. 395
Ý Please wait 48 V battery charg‐
ing ...................................................... .403 _
Rear left seat backrest not
loc ked (Example) .................................3 74
h Rectify tyre pressure .................. 405
Ø Refill Ad Blue See Owne r’s
Manual ................................................ 408
! Release parking brake ................ 383
¸ Replace air cleaner .....................377
Á Replace key ................................ 364
8 Reser vefuel le vel...................... .376
6 Restra int sys. malfunction Con‐
sult workshop ...................................... 361
# See Owner's Manual .................. 401
Ù Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual ....372
Ù Steering malfunction Stop
immediately See Owner's Manual .......372
# Stop vehicle Lea veengine run‐
ning ..................................................... 402
# Stop vehicle See Owner's Man‐
ual .......................................................4 02É
Stop vehicle Vehicle too low .......3 94
ç suspended ................................. 386
: Switch off lights .........................3 67
: Switch on headlamps ................. 367
Ø Top up AdBlue Emergency op.
in XXX miles See Owner's Manual ....... 409
+ Top up coolant See Owner ’s
Manual ................................................ 375
¥ Top up washer fluid .................... .374
ï Trailer coupling extending… ........370
! Turn on the ignition torelease
th e parking brake ................................ 383
d Vehicle is operational Switch
off ignition before exiting .................... 370
É Vehicle rising Please wait.......... .395
É Vehicle rising .............................. 395
h Warning tyre defect .................... 406
h Wheel sensor(s) missing ............ 404438
Index