Hang fire for a sec before buying from your dealer!!
The ariel for the Sat Nav from a Toyota dealer is WAY Expensive! You can get a GPS attenna ariel from eBay as well way cheaper with the right connector to just plug straight in
Check out these as examples... [url="http://cgi.ebay.co.uk/SAT-NAV-GPS-ANTENNA-FAKRA-MFD2-RNS2-RNS-E-MFD-2-VW_W0QQitemZ260182654431QQihZ016QQcategoryZ139823QQcmdZViewItemQQ_trksidZp1742.m53.l1262"]http://cgi.ebay.co.uk/SAT-NAV-GPS-ANTENNA-...1742.m153.l1262[/url] and [url="http://cgi.ebay.co.uk/NEW-SAT-NAV-GPS-ANTENNA-Pioneer-JVC-APS30-traffic-pro_W0QQitemZ370010123613QQihZ024QQcategoryZ139823QQcmdZViewItemQQ_trksidZp1742.153.l1262"]http://cgi.ebay.co.uk/NEW-SAT-NAV-GPS-ANTE...1742.m153.l1262[/url]
Tell the seller what connector you have and I bet they have one to suit
And the antenna does not have to be visible either - you can push it in the gap under the top dash and above the instrument panel (whip out the head unit and have a feel on the right hand side and you will see what I mean - will work just fine there

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