FUNC­TION­ING 4X4

Classic Car Weekly (UK) - - Buying & Selling -

The four-wheel drive sys­tem – part­time on W460s – is re­li­able if used reg­u­larly but look for oil leaks from the trans­fer box, dif­fer­en­tials and front hubs, and listen out for groans or clunks. Check the op­er­a­tion of the hy­drauli­cally-op­er­ated diff locks (they were elec­tri­cally-con­trolled on W463s), while early ex­am­ples also have a num­ber of grease nip­ples that need reg­u­lar at­ten­tion. Both man­ual and au­to­matic gear­boxes need reg­u­lar oil changes; the for­mer suf­fers from worn syn­chro­mesh on sec­ond and third gears. A sloppy gearshift is likely just worn ny­lon bushes (around £100 to re­place), but sort­ing an ail­ing au­to­matic is costly so en­sure gear-changes are smooth.

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