Thaum lub tsheb Mercedes-Benz qhia "Assyst Plus", nws yog hais txog kev saib xyuas kev ceeb toom. Thaum tus tswv lub tsheb pom "Assyst Plus" zaub, lawv yuav tsum mus rau lub khw 4S kom lawv lub tsheb tau txais kev pabcuam sai li sai tau. Cov zaub feem ntau yog qhib thaum lub sij hawm txij nkawm los yog mais mus txog. Kev saib xyuas tsis tu ncua yuav tsum tsis txhob saib xyuas, vim tias nws tso cai rau kev tshawb nrhiav thiab kev daws teeb meem ntawm cov teeb meem uas yuav tsis tshwm sim thaum siv tsis tu ncua, yog li ncua lub neej ntawm lub tsheb mus rau qee qhov.
Cov khoom tseem ceeb ntawm kev tu lub tsheb niaj hnub muaj xws li: hloov cov roj cav thiab lim, hloov cov lim cua thiab cov cua txias, hloov cov dej nres thiab cov dej sib kis, thiab tshuaj xyuas cov khoom hnav thiab tsim kua muag ntawm lub tsheb. Cheebtsam xws li wiper hniav, roj teeb, nres nres, log tsheb, lub txim hluav taws xob, cov hluav taws xob hluav taws xob, thiab cov hlua siv cav yuav tsum tau hloov raws sijhawm thaum pom pom tias muaj kev laus thiab deformation.
Ib yam khoom uas yuav tsum tau hloov pauv yog cov roj cav, feem ntau hu ua "cov ntshav ntawm lub cav." Nws lub luag haujlwm tseem ceeb hauv lub cav yog lubrication, txias, sealing, tiv thaiv xeb, thiab tu. Yog hais tias lub cav roj tsis hloov lub sij hawm ntev, nws cov khoom lubrication deteriorate, ua rau muaj zog hnav ntawm cov khoom sab hauv ntawm lub cav. Qhov no tuaj yeem ua rau lub tog raj kheej cov qhab nia lossis txawm tias tag nrho lub cav tsis ua haujlwm, txo qis lub neej ntawm lub cav.
