▁for ▁various ▁items ▁like ▁head light s , ▁he ated ▁seats , ▁and ▁rear ▁w i per ▁were ▁moved ▁to ▁more ▁convenient ▁locations . ▁The ▁electronic ▁Ve h icle ▁Information ▁center ▁was ▁moved ▁from ▁below ▁the ▁radio ▁to ▁above ▁the ▁wind sh ield , ▁and ▁was ▁standard ▁on ▁ 2 0 0 0 - 2 0 0 4 ▁models . ▁Limited ▁models ▁included ▁automatic ▁dual - zone ▁climate ▁control . ▁A ▁ 1 0 ▁CD - Ch anger ▁was ▁also ▁available ▁with ▁the ▁In fin ity ▁Audio ▁package . ▁ ▁In ▁addition ▁to ▁Je ep ' s ▁Un i Frame ▁construction , ▁Da im ler ▁Ch rys ler ▁partner ed ▁with ▁Por sche ▁to ▁further ▁strength en ▁the ▁frame . ▁This ▁was ▁done ▁to ▁reduce ▁No ise ▁V ibration ▁Har sh ness ▁( N V H ). ▁Un i Frame ▁is ▁an ▁unusual ▁construction ▁scheme , ▁it ▁incorpor ates ▁all ▁of ▁the ▁strength ▁and ▁dur ability ▁of ▁a ▁body - on - frame ▁construction ▁into ▁a ▁unit ized ▁construction . ▁By ▁adding ▁st iff ness ▁and ▁rig id ity ▁to ▁the ▁structure , ▁they ▁en hanced ▁the ▁ride ▁and ▁strength ened ▁the ▁network ▁of ▁steel ▁be ams , ▁rails ▁and ▁pill ars ▁( or ▁" s af ety ▁c age ") ▁that ▁surr ound ▁and ▁protect ▁occup ants . ▁More ▁than ▁ 7 0 ▁percent ▁of ▁the ▁under body ▁is ▁high - str ength ▁steel . ▁All ▁Je ep ▁Grand ▁Ch ero ke es ▁feature ▁Un i Frame ▁construction . ▁ ▁The ▁Grand