warning light MERCEDES-BENZ E-CLASS CABRIOLET 2018 Repair Manual

Wa
rning and indicator lamps Overview of
warning and indicator lamps Some sy
stems will per form a self-test when the
ignition is switched on. Some warning and indi‐
cator lamps may brief lylight up or flash. This
behaviour is non-critical. These warning and indi‐
cator lamps indicate a malfunction only if they
light up or flash af terth e engine has been star‐
te d or during a journe y.
Instrument display (standard) Instrument display in
the widescreen cockpit Prog
ressive setting Ve
hicles with a widescreen cock pit:Ifyou
select the progressive display setting, the posi‐ tions of
the indicator lamps on the instrument
display will change.
Wa rning and indicator lamps:
L Low beam (→
page127)
T St
anding lights (→ page127)
K High beam (→
page129)
#! Tu
rn signal indicators (→ page129)
R Re
ar fog light (→ page127)
6 Re
stra int sy stem (→ page 527)
ü Seat belt not
fastened (→ page 532)
J Brakes (yellow) (→
page 527)
J Brakes (red) (→
page 527)
! Elect
ric pa rking brake (yellow)
(→ page 527)
! Electric parking brake (red)
(→
page 527)
! ABS malfunction (→
page 527)
÷ ESP®
(→ page 527)
å ESP®
OFF (→ page 527)
L Distance warning (→ page 533) 526
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
! ABS warning lamp The
yellow ABS warning lamp is lit while the engine is running.
ABS is malfunctioning.
If th ere is an additional warning tone, EBD is malfunctioning.
Other drive sy stems and driving saf ety sy stems may also be malfunctioning. &
WARNING Thereisrisk of skidding if EBD or ABS is malfunctioning
If EBD or ABS is malfunctioning, the wheels could lock when braking
The steering capability and braking characteristics are thus se verely impaired. The br aking distance may increase in
an eme rgency braking situation. In addition, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Drive on carefully. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop.
÷ ESP ®
wa rning lamp lights
up The
yellow ESP ®
wa rning lamp is lit while the engine is running.
ESP ®
is malfunctioning
Other drive sy stems and driving saf ety sy stems may also be malfunctioning. 530
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
7 Seat belt warning lamp
lights up The
red seat belt warning lamp will light up once the engine has star ted.
In addition, a warning tone may sound.
The seat belt warning lamp reminds the driver and front passenger tofast entheir seat belts. #
Fasten your seat belt (→ page 36).
If yo u ha veplaced objects on the front passenger seat, the seat belt warning lamp may remain lit. Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
à Suspension warning lamp The
yellow AIR BODY CONTROL warning lamp is on.
The yellow DYNA MIC BODY CONTROL warning lamp is on.
AIR BODY CONTROL is faulty.
There is a fault in theDY NA MIC BODY CONTROL. #
Obser vethe messages on the multifunction displa y.
L
Wa rning lamp for dis tance
wa rning function The
red dis tancewarning 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. Displ
aymessa ges and warning/indicator lamps 533

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Obser vethe messages on the multifunction displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale: #
Consult a qualified specialist workshop.
or #
Exit theve hicle and keep a safe dis tance from it until the engine has cooled down. #
Check the coolant le vel (→ page 398). #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that the
coolant temp erature display remains below 120 °C. Ty
res Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressure monitoring
sy stem warning lamp lights
up The
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. 536
Display messages and warning/indicator lamps

6Example: Left windowbag mal‐
function Consult
workshop ................. 483
Fa ult Drive at max. 80 km/h ...............490
6Fr ont left malfunction Consult
wo rkshop (Example) ............................4 85
_Fr ont left seat backrest not
loc ked (Example) .................................. 516
Fr ont-passenger airbag disabled See
Owner's Manual ..................................4 82
Fr ont-passenger airbag enabled See
Owner's Manual ................................... 481
b Hazard warning lamps mal‐
functioning .......................................... 524
&inoperative Bat tery low ................ 521
&inoperative Refuel vehicle ............ 521
&inoperative See Owner's Man. ....520
!inoperative See Owner's Man‐
ual ....................................................... 480
÷inoperative See Owner's Man‐
ual ....................................................... 480 Tinoperative See Owner's Man‐
ual
....................................................... 477
G Inoperative .................................. 484
bIntellige nt Light System inoper‐
ative ....................................................5 23
ÁKe y not de tected (red displ ay
messa ge).............................................5 13
Á Key not de tected (white dis‐
pl ay messa ge)...................................... 513
b Left dipped beam (Example) ....... 523
6Left windowbag malfunction
Consult workshop (Example) ............... 481
Let fresh air into theve hicle interior!
Air conditioning malf. Visit workshop .. 520
Limiter inoperative .............................. 494
Limiter passive .................................... 494
¢ Lowe ring .................................... 492
bMalfunction See Owner's Man‐
ual ....................................................... 524
ðMaximum speed exceeded ..........4 94 Mercedes me connect Services limi‐
te
d See Owner's Manual .....................484
Mo tor can be star ted again .................4 99
N permanently active Risk of vehicle
ro lling .................................................. 506
çOff .............................................. .492
ëOff ............................................... 489
Only select Park (P) when vehicle is
st ationary ............................................ 507
K Open/close top comple tely ........ 521
ïOpe ration only possible in
transmission position N .......................515
ï Operation only possible in
transmission position P ........................51 5
! Parking brake See Owner's
Manual ................................................ .474
Á Place theke y in the mar ked
space See Owner's Manual ..................514
K Please check direction of tr avel ...... 484
Please reduce speed ...........................4 87552
Index

High beam
Adaptive Highbeam Assist Plus .......... .132
Switching on/off ................................. 12 9
High-pressure cleaner (care) ................. 400
Hill Start Assist ........................................ 213
HOLD function ......................................... 214
Fu nction/no tes .................................... 214
Switching on/off ................................. 214
Hooking the luggage net .........................119
Hotspot Setting up (Wi-Fi) ................................. 294
Via business telephony ........................ 292 I
i-Size child seat securing sy stem
Fitting .................................................... 59
Seats suitable for attaching ................... 58
Identification plate Engine ................................................. 457
Vehicle ................................................ 457
Ignition Switching on (S tart/S top button) ........ 15 6Ignition
key
see Key
Immobiliser ................................................ 96
Implied warranty
Ve hicle .................................................. 26
In Car Of fice
Calling up ............................................ 344
Fe atures .............................................. 344
Marking a to-do entry as compl eted ....3 45
Noting an incoming call ....................... 345
Selecting functions .............................. 345
Switching auto maticstart on/off ........ 345
Indicator lamps see Warning/indicator lamps
Individual drive prog ram
Con figuring .......................................... 16 8
Selecting ............................................. 16 8
Inspection see AS SYST PLUS
Instrument clus ter
see Instrument display
Instrument display ..................................2 52
Ad justing the lighting ........................... 257 Fu
nction/no tes ................................... 252
Instrument clus ter ................................... 8
Setting the additional value range ....... 255
Wa rning/indicator lamps .................... 526
Instrument lighting .................................257
Intelligent Light Sy stem .......................... 13 0
Ac tive headla mps ................................ 13 0
Ad aptive Highbeam Assist Plus .......... .132
Ad versewe ather light .......................... 13 2
City lighting ........................................ .132
Cornering light ..................................... 131
Fo g light (extended range) ................... 131
Mo torw ay mode ................................... 131
Overview ............................................. 13 0
Switching on/off ................................. 13 2
Interior lighting ........................................ 13 4
Ambient lighting .................................. 13 4
Re ading light ........................................ 13 4
Setting ................................................. 13 4
Switch-off del aytime ........................... 13 5
Interior pr otection
Fu nction ................................................ 98
Priming/deactivating ............................. 98 Index
559

Ke
y functions
Deactivating .......................................... 73
KEYLESS-GO Locking theve hicle ................................ 78
Problem .................................................79
Un locking setting .................................. .73
Un locking theve hicle ............................78
Kickd own.................................................. 172
Using ................................................... 172
Knee airbag ................................................ 38 L
Lamp see In terior lighting
Lamps (instrument display) see Warning/indicator lamps
Lane de tection (au tomatic)
see Active Lane Keeping Assist
Lane Keeping Assist
see Active Lane Keeping Assist
Language .................................................2 96
No tes .................................................. 296
Setting .................................................2 96LED light
see Intelligent Light Sy stem
Le vel control sy stem
see AIR BODY CONTROL
Light switch Overview .............................................. 127
Lighting see In terior lighting
see Lights
Lights ........................................................ 127
Ac tive headla mps ................................ 13 0
Ad aptive Highbeam Assist Plus .......... .132
Ad justing the instrument lighting ........ 257
Ad versewe ather light .......................... 13 2
Au tomatic driving lights ....................... 12 8
City lighting ........................................ .132
Combination switch ............................ .129
Cornering light ..................................... 131
Driving ab road (symm etrical dipped
beam) .................................................. 127
Fo g light (extended range) ................... 131
Haza rdwa rning lights .......................... 13 0
Headla mpflasher ................................ 12 9
High beam ........................................... 12 9Intellige
nt Light Sy stem ....................... 13 0
Light switch ......................................... 127
Low beam ............................................ 127
Mo torw ay mode ................................... 131
Pa rking lights ...................................... .127
Re ar fog light ....................................... 127
Re sponsibility for lighting sy stems .......1 27
Setting the dipped beam ..................... 13 3
Setting theex terior lighting switch-
off delay time ...................................... 13 4
Setting the sur round lighting .............. .134
St anding lights .................................... .127
Tu rn signal lights ................................. 12 9
Limiter ...................................................... 19 9
Ac tivating ............................................ 200
Buttons ................................................ 200
Calling up a speed ............................... 200
Deactivating ........................................ 200
Fu nction .............................................. 19 9
Pa ssive mode ...................................... 19 9
Pe rm anent setting .............................. .201
Re quirements: .................................... .200
Selecting ............................................. 200
Setting a speed ................................... 200
St oring a speed ................................... 200 Index
561

Outside mir
rors ............................... 139, 14 0
Anti-dazzle mode (automatic) .............. 14 0
Au tomatic mir rorfo lding function ........ 141
Fo lding in/out .................................... .139
Operating the memory function ........... 11 3
Pa rking position .................................. .140
Setting ................................................. 13 9
Overhead control panel Making calls (Mercedes me connect) .. 351
Overview ................................................ 12
Owner's Manual Vehicle equipment ................................. 21
Owner's Manual (digital) ...........................18 P
Pa int code ................................................ 457
Pa intwork (cleaning instructions) .........402
Pa nel heating
Setting .................................................1 08
Pa nic alarm ................................................ 73
Ac tivating/deactivating ......................... 73
Pa rk position
Inserting .............................................. 17 0Selecting au
tomatical ly....................... 17 0
Pa rking
see Electric parking brake
Pa rking aid
see Parking Assist PARKTRONIC
Pa rking Assist PARKTRONIC ................... 218
Ac tivating ............................................ 221
Ad justing warning tones ...................... 221
Deactivating ........................................ 221
Fu nction ............................................... 218
Side impact pr otection .........................2 19
Sy stem limitations ...............................2 18
Pa rking assistance sy stems
see Active Parking Assist
Pa rking brake
see Electric parking brake
Pa rking lights .......................................... .127
Pa rking position
Outside mir rors ................................... 14 0
St oring the position of the passenger
outside mir ror using reve rsege ar ........ 141
Pa rking up ................................................ 185PA
SSENGER AIR BAGstatus display
see Automatic front passenger front
airbag shutoff
Pe destrian pr otection
see Active bonnet (pedestrian pr otection)
Pe rfume
see Fragrance sy stem
Pe rfume vial
see Fragrance sy stem
Pe rm issible axle load .............................. 457
Pe rm itted towing me thods .................... .426
Pe rsonalisation
see User profile
Pe trol ........................................................ 461
Pe ts in the vehicle .................................... .70
Phone book see Contacts
Picture form ats
see Video mode
Picture settings see Video mode Index
567

To
w- bar sy stem ........................................ 251
To w- starting ............................................. 431
To wing away ............................................ 427
To wing eye
Ins talling .............................................. 430
St orage location ..................................4 30
To wing me thods ...................................... 426
Tr ack
Selecting (audio mode) ....................... 368
Tr af fic announcements
Ac tivating/deactivating ...................... .380
Tr af fic information .................................. 321
Displaying the tra ffic map .................. .322
Displ aying traf fic incidents .................. 323
Extending a Live Traf fic Information
subscription ......................................... 321
Issuing hazard warnings ...................... 323
Live Traf fic Information ........................ 321
Overview .............................................. 321
Re gis tering Live Traf fic Information ..... 321
Tr af fic information service volume
increase
Setting ................................................ .380 Tr
af fic map
see Map
Tr af fic Sign Assist .................................. .237
Fu nction/no tes ................................... 237
Setting .................................................2 38
Sy stem limitations ...............................2 37
Tr ailer hitch
Axle load .............................................. 471
Bicycle rack ......................................... 24 9
Care .................................................... 407
Coupling up/uncoupling a trailer ........ .247
Fa stening points ..................................4 70
Fo lding the ball neck out/in ................2 46
Gene ral no tes ...................................... 470
Mounting dimensions .......................... 470
No tes ................................................... 24 5
Overhang dimension ............................4 70
Soc ket ................................................. 247
To ngue weight ...................................... 471
To wing capacity .................................. .470
Tr ailer operation
Ac tive Blind Spot Assi st....................... 24 0
Bicycle rack ......................................... 24 9
Coupling up/uncoupling a trailer ........ .247
Fo lding the ball neck out/in ................2 46No
tes ................................................... 24 5
Soc ket ................................................. 247
Tr ailer stabilisation
Fu nction/no tes ................................... 19 2
Tr ansfer redve hicle data
Android Auto ....................................... 349
Apple CarPl ay™ ................................... 349
Tr ansmission position display ................16 9
Tr anspo rting
Ve hicle ................................................ 429
Tr im element (Care) ................................ 409
Tr ip
Menu (on-board computer) .................. 258
Tr ip computer
Displaying ............................................ 258
Re setting ............................................. 260
Tr ip distance ............................................ 258
Displaying ............................................ 258
Re setting ............................................. 260
Tr ip me ter
see Trip dis tance
Tu rn signal indicator
see Turn signal lights 576
Index

Tu
rn signal lights .....................................1 29
Switching on/off ................................. 12 9
TV .............................................................. 274
Ac tivating ............................................ 382
Ad justing the brightness ..................... 388
Calling up the menu (CI+ module) .......3 88
Displ ays in theTV control menu .......... 384
Fu nction/no tes (audio language,
subtitles) ............................................. 386
Information .......................................... 380
Overview ............................................. 383
Picture settings ................................... 388
Picture settings overview .................... 388
Setting subtitles .................................. 387
Setting the audio language .................. 387
Showing telete xt .................................. 387
Showing/hiding full screen ................. 384
Te lete xt overview ................................. 387
Vo ice commands (LINGU ATRO NIC) ...... 274
TV channel
Ac tivating/deactivating channel fix ..... 385
Channel fix .......................................... 385
Channel li stove rview .......................... 385
EPG (elect ronic programme guide) ...... 385
Overview of favo urites ........................ .385 Quick sa
ve........................................... 386
Selecting from thech annel list ............ 384
Selecting from the control menu ......... 384
Selecting from thefa vo urites .............. 384
Selecting in the bac kground ................ 384
St oring ................................................ 386
Using a voice tag ................................. 386
Tw o phone mode
see Second telephone
Tw o-w ayradios
Fr equencies ......................................... 456
No tes on ins tallation .......................... .455
Tr ansmission output (maximum) ........ .456
Ty re inflation compressor
see TIREFIT kit
Ty re pressure ........................................... 437
Checking (ty repressure monitoring
sy stem) ............................................... 438
No tes .................................................. 436
Re starting the tyre pressure loss
wa rning sy stem ................................... 442
Re starting the tyre pressure monitor‐
ing sy stem ...........................................4 39
TIREFIT kit ............................................ 416Ty
re pressure loss warning sy stem
(function) ............................................. 442
Ty re pressure monitoring sy stem
(function) ............................................. 438
Ty re pressure table .............................. 437
Ty re pressure loss warning sy stem
Fu nction .............................................. 442
Re starting ............................................ 442
Ty re pressure moni toring sy stem
Checking the tyre pressure ................. 438
Checking the tyre temp erature ............ 438
Fu nction .............................................. 438
Re starting ............................................ 439
Te ch nical da ta..................................... 440
Ty re pressure table ................................. 437
Ty re temp erature
Checking (tyre pressure monitoring
sy stem) ............................................... 438
Ty re pressure monitoring sy stem
(function) ............................................. 438
Ty re tread ................................................. 435
Ty re-change tool kit
Overview ............................................ .447 Index
577