XC70: Gearbox Auto gearbox drone on selection of reverse

[Philip Fisher]

Hi all,

After at least 5 years in the wilderness in Mondeo/Passat/Golf/A6 saloon and A6 estate I am back in a proper XC70 and loving it.

Car is 3 months old, "13" reg XC70 D5 AWD Auto with a few options.

Pretty much everything I hoped for, but for a problem with the auto box which the dealer cannot (although they have had just one attempt so far) diagnose or fix.

After driving in forward for a reasonable amount of time (normally my 45 mile/45 minute commute) there is a noise when I come to a halt to reverse, after I select reverse gear. This is a droning, almost dry sounding noise which lasts for about 2 seconds. After this it goes away. Stopping, driving forward again and then selecting reverse again does not generate the noise again.

Cannot find anything on the internet and dealer is stumped.

Any thoughts?

Thanks.

Philip