steering MERCEDES-BENZ E-CLASS CABRIOLET 2018 Repair Manual

&
WARNING Risk of accident due tothe
specified tyre pressure not being ach‐
ie ved
If th e specified tyre pressure is not achie ved
af te r a brief drive, the tyre is too badly dam‐
aged. The tyre sealant cannot repair the tyre
in this ins tance.
Dama ged tyres and a tyre pressure that is
to o low can significantly impair braking and
handling characteristics. #
Do not drive on. #
Consult a qualified specialist workshop. Countries
that ha veMercedes-Benz
Service24h: you will find a sticke r with thete le‐
phone number, e.g. on the B‑pillar on the driver's
side. #
Cor rect the tyre pressure if it is still at least
13 0 kPa (1.3 bar/19 psi). See the tyre pres‐
sure table on the fuel filler flap forva lues. #
Toincrease the ty repressure: switch on
th e tyre inflation compressor. #
Toreduce the tyre pressure: press pres‐
su re re lease button 1next tomanome ter
2 . #
When the tyre pressure is cor rect, unscr ew
th efilling hose from theva lve of the sealed
tyre. #
Screw theva lve cap onto theva lve of the
sealed tyre. #
Pull the tyre sealant bottle out of the tyre
inflation compressor.
The filling hose stay s on the tyre sealant bot‐
tle. #
Drive tothe nearest qualified specialist work‐
shop and ha vethe tyre, tyre sealant bottle
and filling hose replaced there. Batte
ry(vehicle) Note
s onthe12 V battery &
WARNING Risk of an accident due to
wo rkcar ried out incor rectly on the bat‐
te ry
Wo rkcar ried out incor rectly on the battery
can, forex ample, lead toa short circuit. This
can lead tofunction restrictions in saf ety-re l‐
eva nt sy stems, e.g. the lighting sy stem, ABS
(anti-lock braking sy stem) or ESP ®
(Elec‐
tronic Stability Prog ram). The operating
saf ety of your vehicle may be restricted.
Yo u could lose cont rol of theve hicle in the
fo llowing situations:
R when braking
R intheeve nt of ab rupt steering manoeu‐
vres and/or when theve hicle's speed is
not adap tedto thero ad conditions 420
Breakdown assis tance

Pe
rm itted towing me thods Ve
hicle equipment/ towing
me thod Bo
th axles on thegr ound Fr
ont axle raised Re
ar axle raised
Ve hicles with automatic transmis‐
sion Ye
s, maximum 50 km at 50 km/h No Yes, if thesteering wheel is fixe d in
th e cent reposition with a steering
wheel loc k.
4MATIC vehicles Yes, maximum 50 km at 50 km/h No NoTo
wing with a raised axle: towing should be
per form ed byato wing compan y. To
wing theve hicle with bo thaxles on the
gr ound #
Obser vethe no tes on the permitted towing
me thods (→ page 426). #
Make sure that the battery is connected and
ch arge d. Obser
vethefo llowing points when the battery is
dischar ged:
R the engine cann otbe star ted
R the electric parking brake cann otbe released
or applied
R vehicles with automatic transmission: the
automatic transmission cannot be shif tedto
position iorj.
% Vehicles with automatic transmission: if
th e automatic transmission cann otbe shif‐ te
dto position i, orthe multifunction dis‐
play in the instrument clus ter does not show
anything, ha vetheve hicle transpor tedaw ay
( → page 429). A towing vehicle with lifting
equipment is requiredforve hicle transpor ta‐
tion. Breakdown assi
stance 427

#
Use a tow bar. #
Make sure that thesteering wheel can
mo vefreely, before towing theve hicle
aw ay. *
NO
TEDama gedue toexcessive tracti ve
po wer If
yo u pull away sharpl y,the tractive po wer
may be too high and theve hicles could be
damaged. #
Pull away slowly and smoo thly. Loading the
vehicle for transport #
Obser vethe no tes on towing away
( → page 427). #
Connect theto w bar totheto wing eye in
order toload theve hicle.
% You can also attach theto w bar tothe trailer
hitch. #
Vehicles with automatic transmission:
shift the automatic transmission toposition
i.
% Ve
hicles with automatic transmission:
th e automatic transmission may be loc ked in
position jintheeve nt of dama getothe
electrical sy stem. Toshift toi , pr ovide the
on-board electrical sy stem with po wer
( → page 424). #
Load theve hicle onto the transpor ter. #
Vehicles with automatic transmission:
shift the automatic transmission toposition
j. #
Use the electric parking brake tosecure the
ve hicle against rolling away. #
Only secure theve hicle bythe wheels. Ve
hicles with ADS PLUS (Adaptive Damping
Sy stem PLUS) &
WARNING Risk of an accident when
transporting vehicles with Adaptive
Damping Sy stem PLUS
The reduced damping forc es on theve hicle
being transpor ted can cause theve hicle/
trailer combination tostart toswing.
As a result, when transporting vehicles with
th eAd aptive Damping Sy stem PLUS, the
ve hicle/trailer combination may start toskid.
Consequentl y,yo u could lose cont rol of your
ve hicle. #
When transporting, ensure that:
R theve hicle has been loaded onto
th e transpor ter cor rectly
R theve hicle is secured at all four
wheels with suitable tensioning
st ra ps
R the maximum permissible speed of
60 km/h is not exceeded when
transporting Breakdown assis
tance 429

R
Tyre pressures will be displayed after a few
minutes of driving
R Tyre pressure monitor active: thete ach-in
process of the sy stem is not yet compl ete.
The tyre pressures are already being moni‐
to re d. #
Compare the tyre pressure with there com‐
mended tyre pressure forth e cur rent operat‐
ing condition (→ page 437). Obse rvethe
no tes on tyre temp erature (→ page 436).
% The values displa yed in the multifunction dis‐
play may deviate from those of the tyre pres‐
sure gauge as they referto sea le vel.At high
altitudes, the tyre pressure values indicated by
a pressure gauge are higher than those
shown bythe on-board computer. In this
case, do not reduce the tyre pressure.
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
R Notes on tyre pressure (→ page 436)
Rest arting the ty repressure moni toring sys‐
tem
Requ irements:
R The recommended tyre pressure is cor rectly
set forth ere spective operating status on
each of thefo ur wheels (→ page 436).
Re start the tyre pressure monitoring sy stem in
th efo llowing situations:
R The tyre pressure has changed.
R The wheels or tyres ha vebeen changed or
newly fitted. On-boa
rdcompu ter:
Service Tyres #
Swipe down wards on Touch Control on the
left-hand side of thesteering wheel.
The Use current tyre pressures as new refer-
ence values? message is shown in the multi‐
function displa y. #
Tobegin restart, press Touch Control on the
left-hand side of thesteering wheel.
The Tyre press. monitor restarted message is
shown in the multifunction displa y.
Cur rent wa rning messages are dele ted and
th eye llow h warning lamp goes out.
Af teryo u ha vebeen driving for a few
minutes, the sy stem checks whe ther the cur‐
re nt tyre pressures are wi thin the specified
ra nge. The cur rent tyre pressures are then
accep ted as refere nce values and monitored.
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
R Notes on tyre pressure (→ page 436) Wheels and tyres
439

On-board computer:
Service Tyres #
Swipe down wards on Touch Control on the
left-hand side of thesteering wheel.
The Run Flat Indicator activeRestart: press
Touch Control message is shown in the mul‐
tifunction displa y.
Re start the tyre pressure loss warning sy stem in
th efo llowing situations:
R The tyre pressure has changed.
R The wheels or tyres ha vebeen changed or
newly fitted. #
Tobegin restart, press Touch Control on the
left-hand side of thesteering wheel.
The Tyre pressure now OK? message is
shown in the multifunction displa y.#
Select Yes. #
Toconfirm restart, press Touch Control on
th e left-hand side of thesteering wheel.
The Run Flat Indicator restarted message is
shown in the multifunction displa y. Af
teryo u ha vedriven for a few minutes, the
tyre pressu reloss warning sy stem monitors
th e set tyre pressures of all the tyres.
Be sure toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (→ page 436) Wheel
change Note
s on selecting, fitting and replacing
tyres Mercedes
-AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognise dangers.
Yo u can ask for information rega rding permit ted
wheel/tyre combinations at a Mercedes-Benz
Service Cent re. &
WARNING Risk of accident due toincor‐
re ct dimensions of wheels and tyres
If wheels and tyres of the wrong size are
used, the wheel brakes or wheel suspension
components may become damaged. #
Alw aysre place wheels and tyres with
th ose that fulfil the specifications of the
original part.
When replacing wheels, make sure tofit the
cor rect:
R Designation
R Type
When replacing tyres, make sure tofit the
cor rect:
R Designation
R Manufactu rer
R Type &
WARNING Risk of inju rythro ugh exceed‐
ing the specified tyre load-bearing capa‐
city or the permissible speed rating
Exceeding the specified tyre load-bearing
capacity or the permissible speed rating may
lead totyre dama geand tothe tyres bur st‐
ing. Wheels and tyres
443

Saf
ety sy stems Display messages
Possible causes/consequences and M
MSolutions
÷ currently unavailable See
Owner's Manual *
ESP ®
is temp orarily una vailable.
Other drive sy stems and driving saf ety sy stems may also be malfunctioning. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilisation. In addition, other driving saf ety sy stems
are switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified specialist workshop. #
Carefully drive on a suitable stre tch of road, making slight steering mo vements at a speed abo ve30 km/h. #
Ifth e display message does not disappear, consult a qualified specialist workshop immediately. Drive carefully.
!
Turn on the ignition to
release the parking brake *
The red! indicator lamp is lit.
Yo u ha veattem ptedto release the electric parking brake with the ignition switched off. #
Switch the ignition on. Display messages and
warning/indicator lamps 473

Display messages
Possible causes/consequences and M
MSolutions #
Check that the conditions for auto matic release of the electric parking brake are fulfilled. #
Release the electric parking brake manually.
T
!
÷
inoperative See Owner's
Manual *
EBD, ABS and ESP ®
are malfunctioning.
Other driving sy stems and driving saf ety sy stems may also be malfunctioning. &
WARNING Risk of skidding if EBD, ABS and ESP ®
are malfunctioning
If EBD, ABS and ESP ®
are malfunctioning, the wheels can lock when braking and ESP ®
cann otcar ryout vehicle
st abilisation.
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. #
Consult a qualified specialist workshop immediatel y.
J
Check brake fluid level *T
here is insuf ficient brake fluid in the brake fluid reser voir. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. Display messages and
warning/indicator lamps 477

Display messages
Possible causes/consequences and M
MSolutions #
Restart the engine.
!
÷
currently unavailable See
Owner's Manual *
ABS and ESP ®
are temp orarily una vailable.
Other driving sy stems and driving saf ety sy stems may also be temp orarily una vailable.
The brake sy stem continues tooperate normally. The braking dis tance may increase in an emergency braking situa‐
tion. &
WARNING Risk of skidding if ABS and ESP ®
are malfunctioning
If ABS and ESP ®
are malfunctioning, the wheels could lock when braking and ESP ®
cann otcar ryout vehicle
st abilisation.
The steering capability and braking characteristics are thus se verely impaired. The br aking distance may
increase in an emergency braking situation. In addition, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have ABS and ESP ®
ch ecked immediately at a qualified specialist workshop. #
Carefully drive on a suitable stre tch of road, making slight steering mo vements at a speed abo ve30 km/h. #
Ifth e display message does not disappear, consult a qualified specialist workshop immediately. Drive carefully. Display messages and
warning/indicator lamps 47 9

Display messages
Possible causes/consequences and M
MSolutions
!
÷ inoperative See Owner's
Manual *
ABS and ESP ®
are malfunctioning.
Other driving sy stems and driving saf ety sy stems may also be malfunctioning.
The brake sy stem continues tooperate normally. The braking dis tance may increase in an emergency braking situa‐
tion. &
WARNING Risk of skidding if ABS and ESP ®
are malfunctioning
If ABS and ESP ®
are malfunctioning, the wheels could lock when braking and ESP ®
cann otcar ryout vehicle
st abilisation.
The steering capability and braking characteristics are thus se verely impaired. The br aking distance may
increase in an emergency braking situation. In addition, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have ABS and ESP ®
ch ecked immediately at a qualified specialist workshop. #
Drive on carefully. #
Consult a qualified specialist workshop immediatel y.
÷
inoperative See Owner's
Manual *
ESP ®
is malfunctioning
Other driving sy stems and driving saf ety sy stems may also be malfunctioning.
The brake sy stem continues tooperate normally. The braking dis tance may increase in an eme rgency braking situa‐
tion. 480
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
A person in the front passenger seat could then, forex ample, come into con tact wi th theve hicle interior, espe‐
cially if the person is sitting too close tothe dashboard. #
Beaware of thest atus of the front passenger airbag bo thbefore and during the journe y. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. #
Check thest atus of the automatic front passenger airbag shutoff (→ page 42). #
If necessar y,consult a qualified specialist workshop immediatel y.
Active Brake Assist Func-
tions limited See Owner's
Manual *
Ve hicles with Driving Assistance Package: Active Brake Assi stwith cross-traf fic function, Evasi veSteering
Assist or PRE‑SAFE ®
PLUS is malfunctioning.
Ve hicles without Driving Assistance Package: Active Brake Assi stis malfunctioning. #
Consult a qualified specialist workshop.
PRE-SAFE inoperative See
Owner's Manual *
PRE‑SAFE ®
functions are malfunctioning. #
Consult a qualified specialist workshop.
6 Example:Left windowbag
malfunction Consult work-
shop *T
he cor responding window airbag is malfunctioning . &
WARNING Risk of inju ryor fata l injury due toa malfunction in the window airbag
The window airbag might be triggered unintentionally or might not be triggered at all in theeve nt of an accident
wi th high deceleration. #
Have the window airbag checked and repaired immediately at a qualified specialist workshop. Display messages and
warning/indicator lamps 483