sensor MERCEDES-BENZ E-CLASS CABRIOLET 2020 Service Manual

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
If th e trailer hitch is swivelling: #
Wait until the ball neck has reached the operational position.
Ù
Po we rst eering warning
lamp (red) The
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. &
WARNING 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.Engine
Wa
rning/indicator lamp
Possible causes/consequences and M MSolutions
ÿ Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
*Possible causes: R The temp erature sensor is malfunctioning 41 8
Displaymessa ges and warning/indicator lamps

Deco
rative foil .................................... .297
Displ ay................................................ 302
Draught stop ....................................... 300
Exterior lighting ................................... 301
Fo lding draught stop ........................... 300
High-pressure cleaner .........................2 96
Matt finish ........................................... 297
Pa int wo rk ............................................ 297
Plastic trim .......................................... 302
Re alwo od/trim elements ...................3 02
Re versing camera ................................ 301
Ro of lining ...........................................3 02
Seat belt .............................................. 302
Seat co ver ........................................... 302
Sensors ............................................... 301
Soft top ...............................................2 98
St eering wheel .................................... 302
Ta ilpipes .............................................. 301
Tr ailer hit ch.......................................... 301
Wa shing byhand ................................. 297
Wheels/rims ........................................3 01
Wi nd de flector .....................................2 99
Wi ndo ws .............................................. 301
Wi per blades ........................................ 301
Carpet (Care) ...........................................3 02Changing
gears ........................................ 16 6
Manually ..............................................1 66
Changing hub caps ................................. 335
Changing the lights
Driving abroad (symm etrical low
beam) .................................................. 12 2
Cha rging
Bat tery (vehicle) ...................................3 16
Mobile phone (wireless) ....................... 11 9
USB port ..............................................1 18
Chassis Damping characteristics ...................... 205
DY NA MIC BODY CONTROL .................. 205
Chassis le vel (AIR BODY CONT ROL)
Setting ................................................ .207
Child saf ety lock
Re ar side wind ows................................. 68
Child seat Appr oval categories .............................. .56
At tach ing (no tes) ................................... 56
Basic instructions ..................................51
Fr ont passenger seat (no tes) ................. 66 Fr
ont passenger seat (without auto‐
matic airbag shutoff) ............................. 66
ISOFIX/i-Size (fitting) ............................60
No tes on risks and dangers ...................52
Re commended child restra int sys‐
te ms ...................................................... 55
Seats suita blefor belt-secu redch ild
re stra int sy stems ................................... 63
Seats suitable for i‑Size child
re stra int sy stems ................................... 59
Seats suitable for ISOFIX child
re stra int sy stems ................................... 58
Securing on the co-driver seat ............... 67
Secu ring on there ar seat ...................... 64
To pTe ther ..............................................62
Child ren
Av oiding dangers in theve hicle .............52
Basic instructions .................................. 51
Chock ...................................................... .334
St orage location ..................................3 34
Cho ck
see Chock
City lighting ..............................................1 27434
Index

:
Active Light Sy stem inopera‐
tive ...................................................... 368
¯ AdBlue sy stem fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km ................................................ 411
¯ AdBlue sy stem fault Emer‐
ge ncy op. in XXX miles See Owner's
Manual ................................................. 411
¯ AdBlue sy stem fault Engine
st art not possible ................................ .412
¯ AdBlue sy stem fault See Own‐
er's Manual .......................................... 411
5 Add 1 litre engine oil when
next refuelling ...................................... 413
é ATTENTION ASSIST inoperative
.............................................................3 92
é ATTENTION ASSIS T:Take a
break! .................................................. 392
: Automatic driving lights inoper‐
ative .................................................... 367 Á
Change key bat teries ................. 363
J Check brake fluid le vel.............. .384
# Check brake pads See Owner's
Manual ................................................ 384
5 Check eng. oil le v.when next
re fuelling .............................................. 412
ï Check trailer hit chlock .............. 371
h Check tyre(s) .............................. 406
! Clean the fuel filter .................... .377
J Close boot separator .................. 366
ÿ Coolant Stop vehicle Switch
engine off ............................................ 376
_ Currently una vailable Camera
view restricted ..................................... 396
ç Currently unavailable Radar
sensors dirty .......................................3 95
! currently una vailable See Own‐
er's Manual ........................................ .397
÷ currently una vailable See Own‐
er's Manual ........................................ .398 5
Engine oil le vel cannot be
measured ............................................ .414
5 Engine oil le velRe duce oil le vel.. 413
5 Engine oil le velSt op vehicle
Switch engine off ................................. 413
5 Engine oil pressu reStop
Switch off engine ................................. 414
ä Fault Drive at max. 80 km/h ...... 389
6 Front left malfunction Consult
wo rkshop (e xample)............................ 360
_ Front left seat backrest not
loc ked (e xamp le).................................. 374
& inoperative Battery low ..............370
& inoperative Refuel vehicle ..........3 70
& inoperative See Owner's Man. ...370
! inoperative See Owner's Man‐
ual ....................................................... 398
÷ inoperative See Owner's Man‐
ual ....................................................... 399 Index
437

!
Turn on the ignition torelease
th e parking brake ................................ 384
d Vehicle is operational Switch
off ignition before exiting .................... .371
É Vehicle rising Please wait.......... .391
É Vehicle rising .............................. 391
h Warning tyre defect .................... 407
h Wheel sensor(s) missing ............ 405
K While stationar y,apply the
brake before operating the soft top .....3 65
Ø XX,X l Top up AdBlue Switch on
ignition, wait 60 sec. or eng. start
not poss. .............................................. 41 0
Ac tive Blind Spot Assi stcur rently
una vailable See Owner's Manual .........393
Ac tive Blind Spot Assi stinope rative .... 394
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual ................................................ 394 Ac
tive bonnet malfunction See Own‐
er's Manual .......................................... 373
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ...... 400
Ac tive Brake Assi stFunctions limited
See Owner's Manual ............................ 401
Ac tive Dis tance Assi stavailable
again .................................................. .387
Ac tive Dis tance Assi stcur rently
una vailable See Owner's Manual .........386
Ac tive Dis tance Assi stinope rative ....... 387
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual .........394
Ac tive Lane Keeping Assist inopera‐
tive ...................................................... 394
Ac tive Parking Assist and
PA RKTRONIC inoperati veSee Own‐
er's Manual .......................................... 391 Ac
tive Steering Assist cur rently
una vailable due tomultiple emer‐
ge ncy stops ......................................... 388
Ac tive Steering Assist cur rently
una vailable See Owner's Manual .........387
Ac tive Steering Assist inoperative .......388
Ac tive Stop-and-Go Assist cur rently
una vailable see Owner's Manual .........388
Ac tive Stop-and-Go Assist inopera‐
tive See Owner's Manual ..................... 389
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual .........369
Ad aptive Highbeam Assist inopera‐
tive ...................................................... 369
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .369
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .369 Index
439

Ty
re press. monitor inoperative No
wheel sensors .................................... .405
Ty re pressure Check tyres ...................408
Ty re(s) ove rheated ...............................4 07
Wi thout changing gear, consult work‐
shop ....................................................3 79
Display on the windscreen
see Head-up display
Distance control see Active Dis tance Assi stDISTRONIC
DI STRO NIC
see Active Dis tance Assi stDISTRONIC
Door Additional door lock ...............................74
Locking (emergency key) ...................... .78
Opening (from the inside) ......................75
Po we r closing function .......................... 78
Un locking (emer gency key) .................... 78
Un locking (from the inside) ...................75
Door cont rol panel .................................... .14
Draught stop
Care .................................................... 300 Dr
aw bar
see Tow- bar sy stem
Drive Away Assist .................................... 223
Drive Away Assist
see Pr otection against collision
Drive position Enga ging ..............................................1 66
Drive prog ram display ............................. 16 3
Drive prog rams
see DYNA MIC SELECT
Driver's seat see Seat
Driving abroad Symmetrical low beam ........................ 12 2
Driving saf ety sy stem ............................ .180
ABS (Anti-lock Braking Sy stem) ........... 182
Ac tive Brake Assi st.............................. 186
Ad aptive brake lights .......................... .190
BA S (Brake Assi stSystem) .................. 182
Cameras .............................................. 181
EBD (Electronic Brake forc e Distribu‐
tion) ..................................................... 185
ESP ®
Crosswind Assi st........................ 185ESP
®
trailer stabilisation .................... .185
Overview ............................................. 182
Ra dar and ultrasonic sensors .............. 181
Re sponsibility ...................................... 180
ST EER CONTROL ................................. 185
Driving sy stem
DY NA MIC BODY CONTROL .................. 205
Driving sy stem
see 360° Camera
see Active Blind Spot Assi st
see Active Dis tance Assi stDISTRONIC
see Active Emergency Stop Assist
see Active Lane Keeping Assist
see Active Parking Assist
see Active Speed Limit Assi st
see Active Steering Assist
see AIR BODY CONTROL
see ATTENTION ASSIST
see Blind Spot Assist
see Cruise control
see Driving saf ety sy stem
see HOLD function
see Limiter
see Parking Assist PARKTRONIC
see Reversing camera Index
441

Fo
il co vering
Ra dar and ultrasonic sensors .............. 181
Fo lding draught stop
Care .................................................... 300
Fitting .................................................... 86
Re moving ............................................. .86
Fr ag rance
see Fragrance sy stem
Fr ag rance sy stem .................................... 14 2
Inserting/removing theflacon ............ .142
Setting ................................................. 14 2
Fr ee software ............................................ 34
Fr equencies
Mobile phone ...................................... 342
Tw o-w ayradio ...................................... 342
Fr ont airbag .............................................. .42
Fr ont passenger seat
see Seat
Fu el .......................................................... .348
Ad ditives .............................................3 48
Diesel ................................................. .348
E10 ...................................................... 347
Fu elreser ve ........................................ 349 Low outside
temp eratures ...................3 48
Pe trol ................................................... 347
Quality (diesel) .................................... 348
Quality (p etro l) .................................... .347
Re fuelling ............................................ 16 9
Sulphur content ................................... 347
Ta nk content ....................................... 349
Fu nction seat
see Door cont rol panel
Fu ses ........................................................ 322
Before replacing a fuse ........................ 322
Fu se assignment diagram ...................3 22
Fu se box in the boot ............................3 24
Fu se box in the engine compartment .. 323
Fu se box in the front passenger foot‐
we ll ...................................................... 324
Fu se box on the dashboard ................. 324
No tes .................................................. 322 G
Garage door opener Cleari ngthe memory ........................... 17 7
Opening or closing the door ................1 77
Programming buttons .......................... 175
Re solving problems ............................. 17 7Synchronising
thero lling code ............ .176
Gearshift recommendation .....................167
Genera l operating permit number
(EU) .......................................................... .343
Genuine parts ............................................ 21
Genuine wood (Care) .............................. 302
Glide mode .............................................. .168 H
Handbrake see Electric parking brake
Handling characteristics (unusual) ....... 325
HANDS-FREE ACCESS ................................ 80
Haza rdwa rning lights ............................ .124
Head airbag ............................................... 42
Head le vel heating (AIRSCARF) ..............107
Head restra int
Fr ont (adjusting mechanically) .............1 00
Re ar (fitting/removing) ........................ 102444
Index

Operating
the memory function ........... 11 2
Pa nel heating ....................................... 107
Re setting the settings .......................... 104
Setting options ...................................... 14
Switching AIRSCARF on/off ................ 107
Wo rkout programme overview ............ .103
Seat belt ............................................... 37,41
Ac tivating/deactivating seat belt
adjustment ............................................ 41
Care .................................................... 302
Fa stening ............................................... 40
Pr otection ..............................................37
Re ar seat belt status display .................. 41
Re duced pr otection ...............................38
Re leasing .............................................. .41
Seat belt adjustment (function) ............. 41
Seat belt extender ................................. 39
Wa rning lamp ........................................ .41
Seat belt adjustment Activating/deactivating ......................... 41
Fu nction ................................................. 41
Seat belt extender .....................................39
Seat belt tensioners
Ac tivation .............................................. 36 Seat belt
warning
see Seat belt
Seat co ver (Care) ..................................... 302
Seat hea ter
Ac tivating/deactivating ...................... .105
Seat ventilation
Switching on/o ff................................. 107
Selecting a gear
see Changing gears
Selector le ver
see DIRECT SELECT le ver
Self-test Automatic front passenger front air‐
bag shutoff ............................................ 47
Sensors (care) .......................................... 301
Service see ASS YST PLUS
Service centre see Qualified specialist workshop
Service inter val display
see AS SYST PLUS Setting a speed
see Cruise control
Setting the map scale
see Map
Shift paddles see Steering wheel gearshift paddles
Shifting gears
Gea rshift recommendation .................. 167
Side airbag .................................................42
Side windo ws............................................. 88
Au tomatic function ................................ 90
Child saf ety lock in there ar .................. .68
Closing .................................................. 88
Closing (all) .......................................... .88
Closing using theke y ............................ .91
Con venience closing .............................. 91
Con venience opening ............................ 91
Opening .................................................88
Opening (all) .......................................... 88
Opening with theke y ............................ .91
Problem .................................................92
Ra in-closing feature .............................. .90
Smartphone see Smartphone integration 454
Index