traction control MERCEDES-BENZ SL CLASS 2018 Owners Manual

Important safety notes
G WAR NING
Adaptive Brake Assist canno ta lways clearly
iden tif yo bj ect sa nd co mple xt ra ff ic situa-
tions.
In suc hc ases, Adaptive Brake Assist can:R
interven eu nnecessar ilyR
no ti ntervene
Ther eisar is kofana cc iden t.
Always pay careful attentio ntot he traff ic sit-
uation and be read yt ob rake. Terminate the
interventio ninan on-cri tical driv ing situation.
G WAR NING
Adaptive Brake Assist does no tr eact:R
to peop le or animalsR
to oncomin gv eh icle sR
to crossing traff icR
when cornering
As ar esult, th eA da pt ive Brake Assist may not
interven eina ll critical conditions. Ther eisa
ris kofana cc iden t.
Always pay careful attentio ntot he traff ic sit-
uation and be read yt ob rake.
Always adapt your spee dtos uit th ep re vailin g
road and traff ic conditions.
Due to th en ature of th es ystem, particularly
co mpli cated but non-critical driv ing conditions
may also caus eB ra ke Assist to intervene.
If adaptive Brake Assist is no ta vailab le due to a
malfunctio nint he radar sensor system, the
brak es ystem remains availab le wit hf ull brake
boostin ge ffect and BA S.
Adaptive brak el ights
i Observ et he "Im portan ts afety notes" sec-
tio n( Y
page 56).
If you brak es harply from as pee dofm or et ha n
50 km /h or if braking is assiste dbyB AS or
Brake Assist wit hC ross-Traffic Assist ,t he brake
lamps flas hr apid ly. In th is way, traff ic traveling
behin dy ou is warned in an eve nm or en ot ic eable
manner. If you brak es harply from as pee dofm or et ha n
70 km /h to as ta ndstill, th eh azard warning
lamps are activated automatically. If th eb rakes
are applie da gain ,t he brak el amps light up con-
tinuously. The hazard warning lamps switch off
automatical ly if you travel faster than 10 km/h.
You can also switch off th eh azard warning
lamps usin gt he hazard warning button
( Y
page 97).
ESP ®
(Electronic Stability Program)
General notes
i Observ et he "Importan ts afety notes" sec-
tio n( Y
page 56).
ESP ®
monitors driving stabilit ya nd traction ,i .e .
power transmission between th et ires and the
road surface.
If ESP ®
detect st ha tt he vehicle is deviating from
th ed irection desired by th ed river, on eorm ore
wheel sa re braked to stabiliz et he vehicle .T he
engin eo utput is also modifie dtok ee pt he vehi-
cle on th ed esired course wit hin physical limits.
ESP ®
assists th ed river when pullin ga way on
wet or slippery roads. ESP ®
can also stabilize
th ev ehicle durin gb raking.
ETS (Electronic Traction System)
i Observ et he "Importan ts afety notes" sec-
tio n( Y
page 56).
ET St ra ction control is part of ESP ®
.
ET Sb rakes th ed riv ew heel si nd ivid ually if they
spin .T his enables you to pull away and acceler-
ate on slippery surfaces, for example if th er oad
surface is slippery on on es ide .Ina ddit ion ,m ore
driv et or que is transferred to th ew heel or
wheel sw it ht ra ction.
ET Sr emains active when you deactivate ESP ®
.
Important safety notes
G WARNING
If ESP ®
is malfunctionin gitw ill no tp rovide
any vehicle stabilization .T her eisani ncreased
ris kofs ki ddin gorofana ccident.
Exercise caution when continuing to drive.
Hav eE SP ®
checked at aq ualified specialist
worksho p.60
Driving safety systems
Safety

speed for ap rolonged period. You can store any
road speed above 20 mph (30 km/h).
Important safety notes If you fail to adap ty our driving style, cruise con-
trol can neither reduce the risk of an accident
nor override the laws of physics. Cruise control
cannot take into account the road, traffic and
weather conditions. Cruise control is only an
aid. You are responsible for the distance to the
vehicle in front ,f or vehicle speed, for braking in
good time and for staying in lane.
Do not use cruise control: R
in road and traffic conditions which do not
allow you to maintain ac onstant speed e.g. in
heavy traffic or on winding roads R
on slippery road surfaces. Braking or accel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid R
when there is poor visibility, e.g. due to fog,
heavy rain or snow
If there is ac hange of drivers, advise the new
driver of the speed stored.
Cruise control lever
C
Stores the current speed or ah igher speedD
Storing the current speed or calling up the
last stored speed

Display messages
Possible causes/consequences and P Solutions
Cruise Contro l--
-m ph Cruis ec ontro lc anno tbea ctivated, since no ta ll of th ea ctivation con-
dition sh av eb een met .X
Chec kt he activation condition sf or cruise control ( Y
page 138).
Cruise Contro l Inop‐
erativ e Cruis ec ontro lism alfunctioning .
Aw arning tone also sounds. X
Visit aq ualified specialist workshop .
Tires Display messages
Possible causes/consequences and P Solutions
Check Tir e Pressure
Soo n Canada only:
The tire pressur el oss warning system has detecte das ignificant loss
in pressure.
Aw arning tone also sounds.
Possibl ec auses: R
you hav ec ha nged th ep osition soft he wheels and tires or installed
ne ww heels and tires R
th et ir ep ressur eino ne or mor et ir es has dropped
G WARNIN G
Tir ep ressures that are to ol ow pos et he followin gh azards :R
they may burst, especially as th el oad and vehicl es peed increas eR
they may wear excessivel ya nd/o ru nevenly, whic hm ay greatl y
impair tire traction .R
th ed rivin gc ha racteristics ,asw ell as steering and braking ,m ay be
greatl yi mpaire d
There is ar is kofana ccident.X
Stop th ev ehicl ew ithout making any sudden steering or braking
maneuvers .P ay attention to th et ra ffic condition sasy ou do so.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 131).X
Chec kt he tires and ,ifn eces sary, follow th ei nstruction sf or af lat
tire ( Y
page 246). X
Chec kt he tire pressures and ,ifn eces sary, correc tt he tire pressure.X
Restart th et ir ep ressur el oss warning system when th et ir ep res-
sur eisc orrect ( Y
page 267).
Check Tir e Pressure
The nR estar tR un
Fla tI ndicator Canada only:
The tire pressur el oss warning system generated ad isplay message
and has no tb een restarte ds ince .X
Se tt he correc tt ir ep ressur eina ll fou rt ir es .X
Restart th et ir ep ressur el oss warning system ( Y
page 267).196
Display messages
On-boar dc omputer an dd isplays

Display messages
Possible causes/consequences and P Solutions
Run Fla tI ndicator
Inoperative Canada only:
The tire pressur el oss warning system is faulty.X
Visit aq ualified specialist workshop .
Please Correc t Tir e
Pressure US Ao nl y:
The tire pressur eist oo low in at least on eoft he tires ,ort he tire
pressur ed ifference between th ew heels is to og reat.X
Chec kt he tire pressures at th en ex to pportunity ( Y
page 267).X
If necessary, correc tt he tire pressure.X
Restart th et ir ep ressur em onitor ( Y
page 270).
Tir eP ressure Soo n The tire pressur eino ne or mor et ir es has dropped significantly. The
whee lp osition is shown in th em ultifunction display.
Aw arning tone also sounds.
G WARNIN G
Tir ep ressures that are to ol ow pos et he followin gh azards :R
they may burst, especially as th el oad and vehicl es peed increas eR
they may wear excessivel ya nd/o ru nevenly, whic hm ay greatl y
impair tire traction .R
th ed rivin gc ha racteristics ,asw ell as steering and braking ,m ay be
greatl yi mpaire d
There is ar is kofana ccident.X
Stop th ev ehicl ew ithout making any sudden steering or braking
maneuvers .P ay attention to th et ra ffic condition sasy ou do so.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 131).X
Chec kt he tires and ,ifn eces sary, follow th ei nstruction sf or af lat
tire ( Y
page 246). X
Chec kt he tire pressur e( Y
page 267).X
If necessary, correc tt he tire pressure.
Warnin gT ir eM al ‐
function The tire pressur eino ne or mor et ir es has dropped suddenly. The whee l
position is shown in th em ultifunction display.
G WARNIN G
Drivin gw it haf lat tire poses ar is koft he followin gh azards :R
af lat tire affects th ea bilit yt os te er or brak et he vehicl eR
you could lose control of th ev ehicle.R
continued drivin gw it haf lat tire will caus ee xces sive heat build-up
and possibl yaf ir e
There is ar is kofana ccident.X
Stop th ev ehicl ew ithout making any sudden steering or braking
maneuvers .P ay attention to th et ra ffic condition sasy ou do so.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 131).X
Chec kt he tires and ,ifn eces sary, follow th ei nstruction sf or af lat
tire ( Y
page 246). Display messages 19 7
On-boar dc omputer an dd isplays Z

MOExtended tires (tires with run-flat
characteristics) With MOExtended tires (tires with run flat char-
acteristics), you can continue to drive you rv ehi-
cle even if there is at otal loss of pressure in one
or more tires.
MOExtended tires may only be use dinc onjunc-
tion with an active tire pressure loss warning
system or with an active tire pressure monitor
and on wheels specifically tested by Mercedes-
Benz.
Notes on driving with MOExtended tires with a
flat tire ( Y
pag e2 47).
Vehicles equipped with MOExtended tires are
not equipped with aT IREFIT kit at the factory. It
is therefore recommende dt hat you additionally
equip you rv ehicl ew ith aT IREFIT kit if you mount
tires that do not feature run-fla tc haracteristics,
e.g. winter tires. AT IREFIT kit can be obtained
from aq ualified specialist workshop.
Winter operation
General notes Have you rv ehicl ew inter-proofed at aq ualified
specialist worksho patt he onset of winter.
Observe the notes in the "Changing aw heel"
section ( Y
pag e2 80).
Driving with summer tires At temperatures below 45 ‡( +7 †), summer
tires lose elasticity and therefore traction and
braking power. Change the tires on you rv ehicle
to M+S tires .U sing summe rt ires at very cold
temperatures coul dc aus ec racks to form,
thereby damaging the tires permanently.
Mercedes-Benz cannot accept responsibility for
this type of damage.
G WARNING
Damaged tires can caus et ire inflation pres-
sure loss. As ar esult, you coul dl ose control of
you rv ehicle. There is ar isk of accident.
Check the tires regularl yf or signs of damage
and replace any damaged tires immediately. M+S tires
G WARNING
M+S tires with at ire tread depth of less than

To avoid hazardous situations: R
never install snow chains to the front
wheels R
alway si nstall snow chains in pairs to the
rear wheels.
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains that have
been specially approved for your vehicle by
Mercedes-Benz ,ora re of ac orresponding
standard of quality. For more information,
please contact aq ualified specialist workshop.
If you inten dtom ount snow chains, please bear
the following points in mind: R
Snow chains may not be mounted on all
wheel/tire combinations. Permissible wheel-
tire combinations ( Y
page 284).R
Only use snow chains when driving on roads
completely covered by snow. Remove the
snow chains as soon as possible when you
come to ar oad that is not snow-covered.R
Local regulations may restrict the use of snow
chains. Observe the appropriate regulations if
you wish to mount snow chains. R
Do not exceed the maximum permissible
speed of 30 mph (50 km/h).
You may wish to deactivate ESP ®
when pulling
away with snow chains installed ( Y
page 60).
You can thereby allow the wheels to spin in a
controlled manner ,a chieving an increased driv-
ing force (cutting action).
Information about driving with an emergency
spare wheel ( Y
page 285). Tire pressure
Tire pressur es pecifications
Important safety notes
G WARNING
Underinflated or overinflated tires pose the
following risks: R
the tires may burst, especially as the load
and vehicle speed increase. R
the tires may wear excessively and/or
unevenly, which may greatly impair tire
traction. R
the driving characteristics, as well as steer-
ing and braking, may be greatly impaired.
There is ar isk of an accident.
Follow recommended tire inflation pressures
and check the pressure of all the tires includ-
ing the spare wheel: R
monthly, at least R
if the load changes R
before beginning al ong journeyR
under different operating conditions, e.g.
off-road driving
If necessary, correc tt he tire pressure.
The data on the Tire and Loading Information
placard and tire pressure table shown here are
examples. Tire pressure specification sa re vehi-
cle-specific and may deviate from the data
shown here. The tire pressure specifications
that are valid for your vehicle can be found on
the Tire and Loading Information placard and
tire pressure table on the vehicle.
General notes The recommended tire pressures for the tires
mounted at the factor yc an be found on the
labels described here.
Operation with an emergency spar ew heel:
information on operation with an emergency
spare wheel can be found in the general notes in
the "Emergency spare wheel" section
( Y
page 286).
Further information on tire pressures can be
obtained at aq ualified specialist workshop.Tir ep re ssure 263
Wheels and tires Z