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My 2005 Toyota Corolla GL Hatch makes a high pitch whine when I drive.

It's not deafening, just noticeable and enough to annoy me.

The noise has been noticeable ever since I purchased it as an ex rental last April.

It's under Signature warranty and I have raised this issue with Toyota when I had the vehicle serviced but the serviceman said he couldn't detect anything out of the ordinary.

So I'm not sure if this is just the usual sound or something is amiss?

Any ideas?

Jane

From the "Ask Jack" archives - 14 December 2009

I suspect the engine warning light is coming on because the on-board management system (computer) has detected a fault of some sort.

Quite often the fault can be erased from the computers memory by a garage and the warning light will operate normally until the fault reappears.

This may only happen at times and therefore be hard for a garage to initially detect.

This will be on-going until the actual fault is found and repaired.

It is a Warrant of Fitness requirement for the engine warning light to work properly as it can affect emissions and the engines performance, so leaving it permanently illuminated may be a short term option.

As far as a refund goes, I recommend you make contact with the repairer to discuss the current situation.

It may be unreasonable to expect them to have another look at the problem at no cost to you, but I think they should at least take on board money already spent when it comes time to settle any further costs.