190 Vehicle careEnsure the jack is positionedcorrectly. The jack head must belevel with the jacking hole. Pumpthe jack by pressing the wheelwrench, to position the base platecorrectly.Raise the vehicle by pressing thewheel wrench until the wheel isclear of the ground.4. Unscrew wheel bolts/nutscompletely and wipe clean with acloth.Put wheel bolts/nuts somewherewhere the threads will not besoiled.5. Change the wheel.6. Screw in the wheel bolts/nuts.7. Lower vehicle.8. Install the wheel wrench ensuringthat it locates securely and tighteneach wheel bolt/nut in a crosswisesequence. Tightening torque is:172 Nm (Front-wheel drive),235 Nm (Rear-wheel drive withtwin rear wheels), 264 Nm (Rear-wheel drive with single rearwheels).9. Refit wheel cover.NoticeIf applicable, fit anti-theft boltsnearest the tyre valve (otherwise itmay not be possible to refit the wheelcover).10. Stow the replaced wheel 3 190and the vehicle tools 3 179.11. Have the new wheel balanced onthe vehicle. Check the tyrepressure of the installed tyre3 225 and also the wheel bolt/nuttorque as soon as possible.Have the defective tyre renewed orrepaired.Spare wheelSome vehicles are equipped with atyre repair kit instead of a spare wheel3 185.If mounting a spare wheel which isdifferent from the other wheels, thiswheel might be classified as atemporary spare wheel and thecorresponding speed limits apply,even though no label indicates this.Seek the assistance of a workshop tocheck the applicable speed limit.CautionThe use of a spare wheel that issmaller than the other wheels or incombination with winter tyrescould affect driveability. Have thedefective tyre replaced as soon aspossible.The spare wheel is held under thevehicle frame using a winch andsecured by tightening a cable usingthe wheel wrench and adapters(depending on vehicle).It may be necessary to jack thevehicle up to gain access to the sparewheel on a fully loaded vehicle with aflat rear tyre.
