hm...I don't think Sc will resolve for you. Already tried that, they always say, tested no sound, or already tighten the nuts or wire or what so ever, bring back if still got sound and bla bla bla. I personally saw them doing it. they just simple knock here and there and say it done. Dun think they want to spend hours figuring out where the sound come from, rather then spend hours of servicing to get more profit.

i already dismantle the door panel and glove box the check where the sound comes from, dun see any loose parts or wires....
damn the sound is very irritating..

Temerloh branch can bring own oil