2018 MERCEDES-BENZ E-CLASS CABRIOLET Owners Manual

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Incre asethe dis tance.
Fu nction of Active Brake Assi st .Engine
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
; Engine diagnosis warning
lamp The
yellow engine diagno stics warning lamp is lit while the engine is running.
A malfunction has occu rred in the engine, theex haust sy stem or the fuel sy stem.
The emissions limit value may ha vebeen exceeded and the engine may be running in eme rgency operation mode. #
Have theve hicle checked as soon as possible at a qualified specialist workshop.
Ve hicles with a diesel engine: the fuel tank may ha vebeen run dr y. #
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 The
red elect rical fault warning lamp is lit.
There is a fault in the electrics. #
Obser vethe messages on the multifunction displa y.534
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
8 Fu elreser ve wa rning lamp The
yellow fuel reser vewarning lamp is lit while the engine is running.
The fuel supply has dropped into there ser verange. #
Refuel.
?
Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120 °C. &
WARNING Danger of bu rns when opening the bonn et
If yo u open the engine bonn etwhen the engine has overheated or during a fire inthe engine compartment, you
could come into contact wi thhot gases or other escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. Do not con‐
tinue driving under any circums tances. Display messa
ges and warning/indicator lamps 535

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

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions &
WARNING Risk of an accident due toinsuf ficient tyre pressure
Ty res with insuf ficient tyre pressure pose thefo llowing risks:
R The tyres may bur st, especially as the load and vehicle speed increase.
R The tyres may wearexc essively and/or une venly, which may greatly impair tyre traction.
R ‑ The driving characteristics, steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle, paying attention toroad and traf fic conditions. #
Check the tyre pressure and the tyres.
h Ty re pressure monitoring
sy stem warning lamp
fl ashes The
yellow tyre pressure monitoring sy stem warning lamp (pressure loss/malfunction) flashes for appro ximately one
minu teand then remains lit.
The tyre pressu remonitoring sy stem is faulty. &
WARNING Thereis a risk of an accident if the tyre pressure monitoring sy stem is malfunctioning
If th e tyre pressure monitoring sy stem is malfunctioning, it is not able toissue a warning if there is pressure loss in
one or more of the tyres. Display messages and
warning/indicator lamps 537

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Ty res with insuf ficient tyre pressure ma y,forex ample, af fect theve hicle's handling characteristics, steering and
braking. ‑ #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. #
Consult a qualified specialist workshop. Ve
hicle Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Ð Po we rst eering sy stem
wa rning lamp The
red po werst eering sy stem warning lamp is lit while the engine is running.
The po wer-assis tedsteering 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. #
Obser vethe messages on the multifunction displa y.538
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
ï Tr ailer tow hit chwarning
lamp The
red trailer tow hit chwarning lamp is on.
The trailer tow hit chis not operational or swivels. &
WARNING Risk of an accident if the ball neck is not loc ked
If th e ball neck is not in the loc ked position, the trailer may come loose. #
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. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivelling procedure and do not re-couple the trailer until the display message disappears. #
Obser vethe messages on the multifunction displa y.
If th e trailer hitch swivels: #
Wait until the ball coupling has reached the operational position. Display messages and
warning/indicator lamps 539

1,
2, 3 ...
4MATIC ..................................................... 173
Fu nction ............................................... 173
12 V battery
see Battery (vehicle)
12 V so cket
see Soc ket (12 V)
48 V on-board electrical sy stem
Operating saf ety .................................... 21
360° Camera .......................................... .225
Fu nction .............................................. 225
Opening the camera co ver (r eve rsing
camera) .............................................. .228
Selecting a view .................................. 228
Setting favo urites ................................ 229
Swit ching automatic operation
on/off (r eversing camera) .................. .228 A
A/C function Activating/deactivating (multimedia
sy stem) ................................................ 14 5
Switching on/off (control panel) ......... 14 5ABS (Anti-lock Braking Sy
stem) ............ .187
Ac celeration
see Kickdown
Ac cess data
Editing (Blue tooth®
) .............................3 59
Setting (Blu etoo th®
) ............................ 358
Ac cident and breakdown manage‐
ment
Mercedes me connect ........................ .352
Ac oustic locking verification signal
Ac tivating/deactivating ......................... 73
Ac tivating/deactivating automatic
vo lume adjustment
Burmes ter®
sur round sound sy stem ... 390
Ac tive Blind Spot Assi st......................... 239
Ac tivating/deactivating ...................... .242
Brake application ................................. 24 0
Fu nction .............................................. 239
Sy stem limitations ...............................2 39
Tr ailer operation .................................. 24 0
Ac tive bonn et(pedestrian pr otection) .. 392
Operation ............................................ 392
Re setting ............................................. 392 Ac
tive Brake Assi st
Fu nction/no tes ................................... 19 3
Setting ................................................. 197
Ac tive Di stance Assist DISTRO NIC........ 202
Ac tive Emergency Stop Assist .............. 211
Ac tive Lane Change Assi st................... 210
Calling up a speed .............................. .204
Displ ays in the instrument display .......2 12
Fu nction .............................................. 202
Increasing/decreasing speed .............. 204
Re quirements: .................................... .204
Ro ute-based speed adap tation ........... .206
Selecting ............................................. 204
St eering wheel buttons ....................... 204
St oring a speed ................................... 204
Switching off/deactivating .................. 204
Switching on/activating ......................2 04
Sy stem limitations ...............................2 02
Ac tive Eme rgency Stop Assist ................ 211
Ac tive headlamps .................................... 13 0
Ac tive Lane Change Assi st..................... 210
Ac tivating/deactivating ........................ 211
Fu nction ............................................... 210540
Index

Ac
tive Lane Keeping Assist .................... 24 2
Ac tivating/deactivating ...................... .244
Ac tivating/deactivating thewa rning .... 24 5
Fu nction .............................................. 24 2
Setting the sensitivity .......................... 24 5
Sy stem limitations ...............................2 42
Ac tive Parking Assist .............................. 229
Cross Traf fic Alert ............................... 234
Drive AwayAssi st................................ 234
Exiting a pa rking space ...................... .232
Fu nction .............................................. 229
Manoeuvring assi stance ...................... 235
Pa rking ................................................ 230
Sy stem limitations ...............................2 29
Ac tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st....................... 205
Display ................................................ 205
Fu nction .............................................. 205
Ac tive Steering Assist ............................ .208
Ac tivating/deactivating ...................... .210
Ac tive Emergency Stop Assist .............. 211
Ac tive Lane Change Assi st................... 210
Displ ays in the instrument display .......2 12Fu
nction .............................................. 208
Sy stem limitations ...............................2 08
Ad aptive brake lights ..............................19 8
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive functions, MULTIBEAM LED
see Intelligent Light Sy stem
Ad aptive Highbeam Assist Plus
Fu nction .............................................. 13 2
Switching on/off ................................. 13 3
Ad Blue ®
.................................................... 464
Ad ditives .............................................4 64
Capacity .............................................. 464
Fill le vel .............................................. .257
No tes ................................................... 176
Purity ................................................... 464
Ra nge .................................................. 257
To pping up ...........................................1 77
Ad ditional door lo ck.................................. 76
Ad ditional value range
Setting display content ........................ 255
Ad diti ves.................................................. 465
Ad Blue ®
............................................... 464 Engine oil ............................................ 465
Fu
el ..................................................... 462
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
Ad dress book
see Contacts
Ad justing the balance/ fader
Burmes ter®
sur round sound sy stem ... 390
Ad justing the sound focus
Burmes ter®
sur round sound sy stem ... 390
Ad justing treble, mid- range and bass
settings
Burmes ter®
sur round sound sy stem ... 390
ADS PLUS damping sy stem
see AIR BODY CONTROL
Ad versewe ather light ............................ .132
Af ter-sales service centre
see ASS YST PLUS Index
541