ETS/4ETS(Electronic Tractio nSystem)
ETS/4ETS traction control is pa rtof ESP®.
ETS/4ET Scan impr ovethev ehicle's traction by
inter vening in thef ollowing ways:
RThe driv ewheels ar ebrake di ndividually if
th ey spin.
RMor edrive torque is transferred tothew heel
or wheels wit htraction.
Influence of driv eprograms on ESP
®
The driv eprograms enable ES P®toadap ttod if‐
fe re nt we ather and road conditionsasw ell asth
ed rive r's prefer redd riving style. Youc an
select thed rive prog rams using theD YNAMIC
SELECT switch.
15 0
Driving and pa rking
#Slidethew heel tobe mounted ont othe cen‐
te ring pi nand push it on.
&
WARNING Risk of injury from tightening
whee lbolts and nuts
If yo ut ighten thew heel bolts or wheel nuts
when thev ehicle is raised, thej ackc ould tip.
#Onl ytighten wheel bolts or wheel nuts
when thev ehicle is on theg round.
#Fo rs afet yr easons, Mercedes-Benz recom‐
mend sthat youo nly use wheel boltswhich
ha ve been appr oved forM ercedes-Benz vehi‐
cles, as well as fort he wheel in question.
* NO
TEDama getopaintwor kofthe wheel
ri mw hen scr ewing on thef irst whee lbolt
If th ew heel has toom uchp layw hen scr ew‐
ing in thef irst whee lbolt, th ew heel rimp aint
can be dama ged.
#Press thew heel firm lyagains tthe
whee lhub when scr ewing on thef irst
wheel bolt.
#Ti ghten thew heel bolts until they aref inger-
tight.
#Un scr ew thec entering pin.
#Tighten thel astw heel bolt until it is finger-
tight.
#Lo we rthe vehicle(→pag e338).
Loweri ngthev ehicle af teraw heelchange
Re quirementsRThe ne wwheel has been mounted
(→pag e337).
#Place ther atche tbox wrenc hontot he he xa‐
gon nut of thej acksot hatthel ette rs "AB"
ar ev isible.
#To lowe rthe vehicle: turnthe ratche tbox
wrenc hofthe jac kcounter-clockwise.
#Tighten thew heel bolts evenlyinac rosswise
patter ninthe sequence indicated (1 to5).
Specified tightening torq ue: 111 lb-ft
(150 Nm).
& WARNING Risk of accident duetoi ncor‐
re ct tigh tening torque
Th ew heelsc ould come loose if thew heel
bolts or wheel nuts ar enottightened tothe
prescribed tightenin gtorque.
#Ha ve thet ightening torque checked
immediatel yataqualified specialist
wo rkshop af terc hanging awheel.
338
Wheels and tires
