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Old 08-12-2007, 09:56 PM
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Re: Avalon - New transmission?

Welcome Aboard

The transmission (actually, the transaxle) could be the source of the noise if the differential gears are damaged. It would be silent while traveling straight, but make noise on turns. This could potentially be tested by raising and supporting the front end, running the engine in gear, and restraining one wheel. Of course, that would likely set an ABS error code, but the service center performing the test should be able to clear that easily.

It's possible the dealership has already performed such a check, thus arriving at that conclusion. Aisin/Warner transmissions don't last forever, after all (no transmission does). Remember that the differential for the A540/541 does have a separate reservoir, and requires GM Dexron II or equivalent lubricant. If the noise is more of a "buzzing" than a "clicking" it may be that the oil level is incorrect.

Unfortunately, as the dealer has evidently indicated, the transaxle must be removed to service the differential.
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