Toyota Problems

It's good to hear that there is a fix for the whine, and the gears being cut at the incorrect angle is certainly a plausible explanation. Armed with that information it would appear that Chris has a legitimate claim against Toyota.

I wouldn't worry too much about it, but I would monitor it and if it does get worse I would take it back to the dealer and have them repair it.

If it is suspected that the rattle is coming from the engine then inspecting it, and flushing the system could be wise.

If you bought it from a private seller you can only persist in trying to contact the owner and come to a settlement with him/her. If the vendor was a licensed motor car trader you can contact Consumer Affairs Victoria and ask for their advice.

No, it's not a coincidence, the faulty injector is likely to have been the cause of the rattle all along. If you still have the records of your previous reports to the dealers about it you could possibly mount a case with Toyota for compensation.

Final drive gear whine is something many owners complain about in Toyotas. It's usually a result of the gear cutting process and there is not much you can do about it, except replace the gears. You could try different gear oil, which might make it a little quieter.

We haven't had any other reports of the issue you complain of. You might find different speeds, changing the tyre pressure, or different shocks might help.

You don't say if it's a diesel or a petrol model, but either way I'd be looking at the injectors and the fuel pump.

Toyota has had problems with valve springs breaking and recalled a number of Lexus models in 2010 to replace valve springs. The recall followed similar recalls in the USA. The recall was for different engines and didn't affect the Kluger, but the failure you report appears very similar to the failures on the engines that were affected. Call Toyota on 1800 869 682.