2015 MERCEDES-BENZ E-CLASS CABRIOLET Owners Manual

Display messages
Possible causes/consequences and
M
MSolutions Cruise control off
Cruise control off Cruise control has been deactivated.
If a warning tone also sounds, cruise control has deactivated auto-
matically (Y page 163). 120 km/h 120 km/h
Maximum Maximum
speed
speedexcee‐
excee‐
ded
ded Only for certain countries: the maximum speed has been exceeded.
In addition, the multifunction display shows
120 km/h! 120 km/h!.
X Drive more slowly. Tyres
Display messages
Possible causes/consequences and
M
MSolutions Tyre pressure
Tyre pressure
Check tyres Check tyres The tyre pressure loss warning system has detected a significant loss
in pressure.
A warning tone also sounds.
Possible causes:
R you have changed the positions of the wheels and tyres or fitted new
wheels and tyres
R the tyre pressure in one or more tyres has dropped
G WARNING
Underinflated tyres pose the following risks:
R the tyres may burst, especially as the load and vehicle speed
increase
R the tyres may wear excessively and/or unevenly, which may greatly
impair tyre traction
R the driving characteristics, as well as steering and braking, may be
greatly impaired
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
manoeuvres. Pay attention to the traffic conditions as you do so.
X Safeguard the vehicle against rolling away (Y page 157).
X Check the tyres and, if necessary, follow the instructions for a flat
tyre (Y page 306).
X Check the tyre pressures and, if necessary, correct the tyre pres-
sure.
X Restart the tyre pressure loss warning system when the tyre pres-
sure is correct (Y page 326). Check Check
tyre
tyrepressures
pressures
then restart Run
then restart Run
Flat Indicator Flat Indicator The tyre pressure loss warning system generated a display message
and has not been restarted since.
X Set the correct tyre pressure in all four tyres.
X Restart the tyre pressure loss warning system (Y page 326).Run Flat Indicator Run Flat Indicator
inoperative inoperative The tyre pressure loss warning system is faulty.
X Consult a qualified specialist workshop. 246
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions Rectify
Rectify
tyre pressure tyre pressure The tyre pressure is too low in at least one of the tyres, or the tyre
pressure difference between the wheels is too great.
X Check the tyre pressures at the next opportunity (Y page 326).
X If necessary, correct the tyre pressure.
X Restart the tyre pressure monitor (Y page 328).Check
Check
tyre(s)
tyre(s) The tyre pressure in one or more tyres has dropped significantly. The
wheel position is shown in the multifunction display.
A warning tone also sounds.
G WARNING
Underinflated tyres pose the following risks:
R the tyres may burst, especially as the load and vehicle speed
increase
R the tyres may wear excessively and/or unevenly, which may greatly
impair tyre traction
R the driving characteristics, as well as steering and braking, may be
greatly impaired
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
manoeuvres. Pay attention to the traffic conditions as you do so.
X Safeguard the vehicle against rolling away (Y page 157).
X Check the tyres and, if necessary, follow the instructions for a flat
tyre (Y page 306).
X Check the tyre pressure (Y page 326).
X If necessary, correct the tyre pressure. Warning Warning
tyre defect tyre defect The tyre pressure in one or more tyres has dropped suddenly. The
wheel position is shown in the multifunction display.
G WARNING
If you drive with a flat tyre, there is a risk of the following hazards: R a flat tyre affects the ability to steer or brake the vehicle
R you could lose control of the vehicle
R continued driving with a flat tyre will cause excessive heat build-up
and possibly a fire
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
manoeuvres. Pay attention to the traffic conditions as you do so.
X Safeguard the vehicle against rolling away (Y page 157).
X Check the tyres and, if necessary, follow the instructions for a flat
tyre (Y page 306). Display
messages
247On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions Tyre press. monitor
Tyre press. monitor
currently unavaila‐ currently unavaila‐
ble ble No signals can be received from the tyre pressure sensors due to
strong RF interference. The tyre pressure monitor is temporarily mal-
functioning.
X Drive on.
The tyre pressure monitor restarts automatically as soon as the
cause has been rectified. Wheel sensor(s) Wheel sensor(s)
missing missing There is no signal from the tyre pressure sensor of one or several
wheels. The pressure of the affected tyre does not appear in the mul-
tifunction display.
X Have the faulty tyre pressure sensor replaced at a qualified spe-
cialist workshop. Tyre Tyre
press.
press. monitor
monitor
inoperative No
inoperative No
wheel sensors wheel sensors The wheels fitted do not have suitable tyre pressure sensors. The tyre
pressure monitor is deactivated.
X Fit wheels with suitable tyre pressure sensors.
The tyre pressure monitor is activated automatically after driving for
a few minutes. Tyre press. monitor Tyre press. monitor
inoperative inoperative The tyre pressure monitor is faulty.
X Consult a qualified specialist workshop. Vehicle
Display messages
Possible causes/consequences and
M
MSolutions To start engine,
To start engine,
shift to either P shift to either P
or N or N You have attempted to start the engine with the transmission in posi-
tion Ror D.
X Shift the transmission to position Por N. Apply
Apply
brake
braketo
todese‐
dese‐
lect
lect
Park (P) position Park (P) position You have attempted to move the transmission selector lever to posi-
tion
D,Ror Nwithout depressing the brake pedal.
X Depress the brake pedal. To shift out of P To shift out of P
or N, or N,
depress brake and depress brake and
start engine start engine With the engine switched off, you have attempted to shift the trans-
mission out of position Por Ninto another transmission position.
X Depress the brake pedal.
X Start the engine. 248
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions Risk of vehicle
Risk of vehicle
rolling rolling
Transmission Transmission
not
notin
in
P
P The driver's door is open or not fully closed and the transmission is in
position R,Nor D.
A warning tone also sounds.
G WARNING
The vehicle may roll away.
There is a risk of an accident.
X Shift the transmission to position P.
X Safeguard the vehicle against rolling away (Y page 157).
X Close the driver's door fully. Only
Only
select
select Park
Park(P)
(P)
when
when vehicle
vehicle is
issta‐
sta‐
tionary
tionary The vehicle is moving.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Shift the transmission to position P.Without changing Without changing
gear, gear,
consult workshop consult workshop You cannot change the transmission position due to a malfunction.
A warning tone also sounds.
If transmission position
Dis selected:
X Drive to a qualified specialist workshop without shifting the trans-
mission from position D.
If transmission position R,Nor Pis selected:
X Safeguard the vehicle against rolling away (Y page 157).
X Consult a qualified specialist workshop. Reversing not poss. Reversing not poss.
consult workshop consult workshop You cannot shift into the transmission position
Rdue to a malfunction.
The transmission positions P,N or Dcontinue to be available.
A warning tone also sounds.
X Consult a qualified specialist workshop. Transmission Mal‐
Transmission Mal‐
function Stop function Stop A malfunction has occurred in the mechanical transmission compo-
nents.
A warning tone also sounds. The transmission shifts automatically to position N.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Shift the transmission to position P.
X Safeguard the vehicle against rolling away (Y page 157).
X Consult a qualified specialist workshop. Auxiliary battery Auxiliary battery
Malfunction
Malfunction The auxiliary battery for the transmission is no longer being charged.
X Consult a qualified specialist workshop at the next opportunity.
X Until then, set the transmission to position Pbefore you switch off
the engine.
X Before leaving the vehicle, apply the parking brake. Display
messages
249On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions N The boot lid is open.
X Close the boot lid. M The bonnet is open. A warning tone also sounds.
G WARNING
The open bonnet may then block your view when the vehicle is in
motion.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Safeguard the vehicle against rolling away (Y page 157).
X Close the bonnet.
If the active bonnet (pedestrian protection) has been triggered: X Reset the bonnet (Y page 289).
X Close the bonnet. Active bonnet mal‐ Active bonnet mal‐
function See Own‐ function See Own‐
er's Manual er's Manual The active bonnet (pedestrian protection) is not active due to a mal-
function or because it has already been triggered.
X Consult a qualified specialist workshop. C At least one door is open. A warning tone also sounds.
X Close all doors. _
Rear Rear
left
leftseat
seatback‐
back‐
rest not
rest not
locked locked orRear rightRear right
seat backrest not
seat backrest not
locked locked The backrest in the rear is not engaged on the left-hand and/or right-
hand side. A warning tone also sounds.
X Push the backrest back until it engages. _
Front left seat Front left seat
backrest not backrest not
locked locked
orFront rightFront right
seat backrest not
seat backrest not
locked locked The driver's or front-passenger seat backrest is not engaged. A warn-
ing tone also sounds.
X Push the backrest back until it engages. 250
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions j
Check Check
trailer
trailer hitch
hitch
lock
lock The trailer tow hitch is not correctly engaged.
A warning tone also sounds.
G WARNING
If the ball coupling is not engaged, the trailer may come loose. There
is a risk of an accident.
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X Apply the parking brake.
X Engage the trailer coupling's ball coupling in the end position
(Y page 210). &
inoperative inoperative
Battery
Battery
Low
Low The on-board voltage is too low. The auxiliary heating has switched
itself off or cannot be switched on (Y page 132).
X Drive for a considerable distance.
The battery charges. The auxiliary heating is operational again as
soon as the on-board electrical system voltage is sufficient. &
inoperative Refuel inoperative Refuel
vehicle vehicle There is too little fuel in the fuel tank. The auxiliary heating cannot be
switched on (Y page 132).
X Refuel at the nearest filling station. &
inoperative inoperative
See
SeeOwn‐
Own‐
er's Man.
er's Man. The auxiliary heating is temporarily malfunctioning or faulty.
X When the vehicle is on a level surface and the engine has cooled
down, make up to four attempts to switch on the auxiliary heating,
waiting several minutes between each attempt (Y page 132).
X If the auxiliary heating does not switch on, consult a qualified spe-
cialist workshop. Telephone Telephone
No
Noservice
service Your vehicle is outside the network provider's transmitter/receiver
range.
X Wait until the mobile phone operational readiness symbol appears
in the multifunction display. Ð
Power steering mal‐ Power steering mal‐
function See Own‐ function See Own‐
er's Manual er's Manual The power steering assistance is faulty.
A warning tone also sounds.
G WARNING
You will need to use more force to steer.
There is a risk of an accident.
X Check whether you are able to apply the extra force required.
X If you are able to steer safely: carefully drive on to a qualified
specialist workshop.
X If you are unable to steer safely: do not drive on. Contact the
nearest qualified specialist workshop. Display
messages
251On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions J
Close Close
boot
bootseparator
separator Cabriolet: the boot separator is open.
X Close the boot separator (Y page 94).K
Convertible Top Convertible Top
Operation possible Operation possible
to 40 km/h to 40 km/h If you drive at speeds of more than 40 km/h, you cannot open or close
the soft top.
X Fully open or close the soft top (Y page 89).K
Top lowering Top lowering The soft top is not fully opened or closed. The hydraulics are depres-
surised.
X Fully open or close the soft top (Y page 89).K
Open/close top com‐ Open/close top com‐
pletely pletely The soft top is not locked.
If you drive at speeds of more than 40 km/h, you cannot open or close
the soft top.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Push or pull and hold the soft top switch until the soft top is fully
open or closed (Y page 89). K
Start engine See Start engine See
Owner's Manual Owner's Manual The on-board voltage is too low.
X Start the engine. The soft top has been opened and closed several times in a row. The
soft-top drive has been switched off automatically for safety reasons.
You can open and close the soft top again after approximately ten
minutes.
X Switch off the ignition and turn it back on.
X Repeat the opening or closing procedure (Y page 89).¥
Top up washer fluid Top up washer fluid The washer fluid level in the washer fluid reservoir has dropped below
the minimum.
X Top up the washer fluid (Y page 293).Key
Display messages
Possible causes/consequences and
M
MSolutions Â
Key Key
does
does not
notbelong
belong
to vehicle
to vehicle You have put the wrong key in the ignition lock.
X Use the correct key. Â
Replace key Replace key The key needs to be replaced.
X Consult a qualified specialist workshop. 252
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions Â
Change Change
key
keybatteries
batteries The battery of the KEYLESS-GO key is discharged.
X Change the replace (Y page 77).Â
Key not detected Key not detected
(red display message) The KEYLESS-GO key is not in the vehicle.
A warning tone also sounds.
If the engine is switched off, you can no longer lock the vehicle cen-
trally or start the engine.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 157).
X Locate the KEYLESS-GO key. A strong source of radio waves is causing interference, this means that
the KEYLESS-GO key is not recognised when the engine is running.
A warning tone also sounds.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 157).
X Insert the key into the ignition lock and bring into key mode. Â
Key not detected Key not detected
(white display message) The KEYLESS-GO key cannot be detected at present.
X Change the location of the key with the KEYLESS-GO functions in
the vehicle.
If the KEYLESS-GO key is still not detected: X Operate the vehicle with the key in the ignition lock if necessary. Â
Remove Remove
starting
starting but‐
but‐
ton,
ton, then
theninsert
insert key
key The KEYLESS-GO key is not continually detected.
KEYLESS-GO is temporarily malfunctioning or is defective. A warning tone also sounds.
X Insert the key into the ignition lock and turn it to the desired posi-
tion.
X Consult a qualified specialist workshop. Warning and indicator lamps in the instrument cluster
General notes
Some systems carry out a self-diagnosis when the ignition is switched on. Several warning and
indicator lamps can thereby temporarily light up or flash. This behaviour is non-critical. These
warning and indicator lamps only indicate a malfunction if they light up or flash after the engine is started or during a journey. Wa
rning and indi cator lamps in the instrument cluster
253On-board computer and displays Z