I'm interested in buying an Audi a4, and I'm confused about the advanced key, as I have been before. The specific a4 doesn't have the push button start feature, however it still has the little touch sensitive square on the front of the handle and the back of the handle is touch sensitive as well. Does the feature work? Or is it just there? It makes me curious, because the key looks like any other advanced key, as do the door handles, but the push button start is not there.

The vehicle is a 2009 Audi A4 Premium Plus.

Will the feature work? (bear in mind, there is no push to start button)

Thanks