2018 MERCEDES-BENZ E-CLASS CABRIOLET air condition

Displaymessages
Possible causes/consequences and 0050Solutions
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he climate contro l system is malfunctioning.
0071
WARNING Risk of injury and accident due toan insuf ficient supply of fresh air
If th e climate control sy stem is malfunctioning, carbon dioxide le vels may inc rease in theve hicle interior.
Breathing in carbon dioxide may cause dizziness.
00BBOpen the window toensure that there is a suf ficient supply of fresh ai r.
00BBOpenthe window toensure that there is an adequate supply of fresh air.
00BBConsult a qualified specialist workshop immediatel y.
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hesteering is malfunctioning. Steering capability is considerably impaired.
0071
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf etyis jeopardized.
00BBPull 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.
00BBConsult a qualified specialist workshop.
00BBPull 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.
00BBConsult a qualified specialist workshop.
436
Display messages and warning/indicator lamps

Safety sy stems
Wa rning/indicator lamp
Possible causes/consequences and 0050Solutions
0027
Brakewarning lamp (USA)
004D
Brakes warning lamp (Can‐
ada) The
red brake sy stem warning lamp is lit while the engine is running.
Po ssible causes are:
RThe brake forc e boosting is malfunctioning and the braking characteristics may be af fected.
RThere is insuf ficient brake fluid inthe brake fluid reser voir.
0071
WARNING Thereis arisk of an accident if brake forc e boosting is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal forc e may be necessary for braking. Braking char‐
acteristics may be impaired. The braking dis tance in an emergency braking situation can increase.
00BBPull 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.
00BBConsult a qualified specialist workshop.
0071
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid leve l is too lo w,the braking ef fect and the braking characteristics may be impaired.
00BBPull 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.
00BBConsult a qualified specialist workshop.
Do not add brake fluid.
44 6
Displ aymessage s andwarning/indicator lamps

Warning/indicator lamp
Possible causes/consequences and 0050Solutions
0025
ABSwarning 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 driving and driving safe ty systems may also be faulty.
0071
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 .Th ebr aking dis tance in an emer‐
ge ncy braking situation can increase. In addition, other driving saf etysy stems are switched off.
00BBDrive on carefull y.
00BBHave the brake sy stem checked immediately at a qualified specialist workshop.
00BBDrive on carefully.
00BBObser vethe messages in the multifunction displa y.
00BBVisit a qualified specialist workshop.
00E5
ESP®wa rning lamp flashes The
yellow ESP
®wa rning lamp flashes while theve hicle is in motion.
ESP
®is inter vening.
00BBAd apt your drivin gst yle to suit thero ad and weather conditions.
44 8
Displ aymessage s andwarning/indicator lamps

Warning/indicator lamp
Possible causes/consequences and 0050Solutions
00BA
Distance warning lamp 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.00BBBe prepared tobrake immediatel y.
00BBIncreasethe dis tance.
Ac tive Brake Assi st.
Ve hicle
Wa rning/indicator lamp
Possible causes/consequences and 0050Solutions
00CC
Powe 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 werst eering assis tance or thesteering itself is malfunctioning.0071
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf etyis jeopardized.
00BBPull 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.
00BBConsult a qualified specialist workshop.
00BBObser vethe messages in the multifunction displa y.
454
Display messages and warning/indicator lamps

Warning/indicator lamp
Possible causes/consequences and 0050Solutions
00AC
Coolantwarning lamp The
red coolant warning lamp is lit while the engine is running.
Po ssible causes are:RThe temp erature sensor is malfunctioning
RCoolant le velto o low
RThe air supply tothera diator is obstructed
RThe radiator fan is de fective
If th ere is an additional warning tone, the coolant temp erature has exceeded the maximum permissible temp erature.
0071
WARNING Danger of burn s when opening the hood
If yo u open the hood when the engine has overheated or during a fire inthe engine compartment, you could come
into contact with hot gases or other escaping operating fluids.
00BBBefore opening the hood, allow the engine tocool down.
00BBIntheeve nt of a fire inthe engine compartment, keep the hood closed and call thefire service.
00BBPull over and stop theve hicle safely and switch off the engine, paying attention toroad and traf fic conditions. Do
not continue driving under any circums tances.
00BBObser vethe messages in the multifunction displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale:
00BBConsult a qualified specialist workshop.
Display messages and warning/indicator lamps 457

Tire s
Wa rning/indicator lamp
Possible causes/consequences and 0050Solutions
0077
Tire pressure monitoring
sy stem warning lamp lights
up The
yellow tire pressure monitoring sy stem warning lamp (pressure loss/malfunction) is lit.
The tire pressure monitoring sy stem has de tected tire pressure loss in at least one of the tires.0071
WARNING Risk of an accident due toinsuf ficient tire pressure
Ti re pressures that are too low pose thefo llowing hazards:
RThe tires may bur st, especially as the load and vehicle speed increase.
RThe tires may wearexc essively and/or une venly, which may greatly impair tire traction.
RThe driving characteristics, as well as steering and braking, may be greatly impaired.
Yo u could then lose control of theve hicle.
00BBObser vethere commended tire pressure.
00BBAd just the tire pressure if necessar y.
00BBStop theve hicle, paying attention toroad and traf fic conditions.
00BBCheck the tire pressure and the tires.
Display messages and warning/indicator lamps 459

Function ............................................... 167
Sy stem limitations .............................. .167
Ad aptive cruise control
see Active Dis tance Assist DISTRONIC
Ad aptive Highbeam Assist
Fu nction ............................................... 114
Switching on/off .................................. 115
Ad ditive s.................................................. 389
Engine oil ............................................ 389
Fu el ..................................................... 389
Ad ditive s (engine oil)
see Additives
Ad ditive s (fuel)
see Fuel
Ad dress book
see Contacts
Ad justing the balance/ fader
Burmes ter
®sur round sound sy stem ... .313
Ad justing the sound focus
Burmes ter
®sur round sound sy stem ... .313
ADS PL USdamp ing sy stem
see AIR BODY CONTROL Af
ter-sales service center
see ASS YST PLUS
Air bag ........................................................ 38
Ac tivation .............................................. 32
Fr ont air bag .......................................... 38
Head air bag .......................................... 38
Ins tallation locations ............................ .38
Knee air bag .......................................... 38
Overview ............................................... 38
Pr otection ............................................. .39
Re duced pr otection .............................. .40
Sid e i
mpact air bag ............................... 38
AIR BODY CONT ROL................................ .171
Setting ................................................. 173
Suspension .......................................... 171
Air conditioning sy stem
see Climate control
Air distribution ........................................ .124
Air freshener sy stem
see Frag rance sy stem
Air pressure see Tire pressure Air suspension
see AIR BODY CONTROL
Air vents ................................................... 128
Ad justing (front) .................................. 128
Ad justing (rear passenger compart‐
ment) ................................................... 129
Ad justing the AIRSCARF vents ............. 130
Glo vebox ............................................ .129
Air-recirculation mode ............................127
AIR CAP
Ac tivating .............................................. 79
Deactivating .......................................... 79
Ai rflow ...................................................... 124
AIRS CARF
Ac tivating/deactivating ......................... 94
AIRS CARF vents
Setting ................................................ .130
Alarm see Panic alarm
Alarm sy stem
see ATA (anti-theft alarm sy stem)
Alternative route
see Route
462
Index

Adaptive Highbeam Assist Inopera‐
tive ...................................................... 442
Air Conditioning Malfunction See
Ope rator's Manual ...............................4 34
Apply Brake toShift from 'P' ............... 432
00ADAT TENTION ASSIST Inoperative ...413
00ADAT TENTION ASSIS T:Take a
Break! .................................................. 413
0049Au toLamp Function Inoperati ve
............................................................. 442
Au xilia ryBattery Malfunction .............. 434
Blind Spot Assist Currently Una vaila‐
ble See Opera tor's Manual .................. 416
Blind Spot Assist Inoperative...............417
Blind Spot Assist NotAv ailable When
To wing a Trailer See Operator's Man‐
ual ........................................................ 417
0027Check Brake Fluid Le vel.............. 405
Check Coolant Le vel See Operator's
Manual ................................................ 421 00B2Check Engine Oil
AtNext Refu‐
eling .................................................... 424
0049Che ckLeft Low Beam (Exam‐
ple) ...................................................... 441
Check Tire Pressure Soon ...................425
0077Che ckTire s ................................. 427
00B2Check Washer Fluid .................... 439
0059 Convertible Top Lo wering ........... 440
0059 Convertible Top Oper
ationPos‐
sible to35 mph................................... 440
00AC

Coolant Too Hot Stop Vehicle
Tu rn Engine Off .................................... 421
Cruise Control Canceled ..................... 420
Cruise Control Inoperati ve.................. 420
0025Cur rently Una vailable See Oper‐
ator's Manual ...................................... 397
00E5Cur rently Una vailable See Oper‐
ator's Manual ...................................... 398
00AFDon't Forget Your Key.................. 43 1Driver'
sDoor Ope n &Transmission
No t in P Risk of Vehicle Rolling Away .. 432
006FExample: Front Left Seat Back‐
re st Not Loc ked .................................. 435
0075Example: Left Side Cur tain Air‐
bag Malfunction Service Required ...... 407
0075Fr ont Left Malfunction Service
Re quired (Example) .............................. 410
Fr ont Passenger Airbag Disabled See
Operator's Manual ...............................4 11
Fr ont Passenger Airbag Enabled See
Operator's Manual ...............................4 12
00B6Fu el Level Low ............................ .424
00B6Gas Cap Loose ............................ 424
0025Inoperative See Operator's
Manual ...................................... ...
....... 396
00E5Inoperative See Operator's
Manual ................................................ 399
007AInoperative See Operator's
Manual ................................................ 400
470
Index