My wife's 53,000 mile, 2006 Toyota Landcruiser LC5 has made a squeaking / rubbing noise when starting from cold for the past couple of years. (The noise stops within about 2 minutes of driving it). At the last service I mentioned this to Toyota and they said it was the exposed belt at the front of the engine and put chalk onto the belt. The noise came back within a couple of days. The car has been parked in a garage for 3 weeks. It started fine with no noise for 3 days on the trot, then on the fourth the noise it used to make has turned into more of a screech - but not continuously: just as the engine turned faster as the revs get higher. This belt runs the waterpump, alternator and I think power steering from what I can see. Could one of these be about to fail or is it more likely to be one of the tensioners? The noise still goes after about 2 minutes of driving. At the next 60k service I plan to have the timing belt replaced. Should I have anything else done to try and stop this noise at start-up?