hi there volvo s60 2001 t5 wipers and interior fan runs continously even when switches in off position what could be the problem thanks no fault codes appear

hi there s80 awd v8 has hard change between 1st and 2nd gears only there is no fault code stored on the gearbox or the engine and when stopping in traffic high idling is being experienced please advise possible causes and repaired needed thanks
barno