Aston Martin DB9 Rear Window Control, on early DB9 Volantes (before MY2009) it was not possible to raise or lower the rear quarterlights independently of the roof, from 2009 onwards once the roof was lowered a flick of the roof switch would raise the rear quarterlights. The Volante looks better, more finished, with the rear window up with the main side window when the roof is down.
My 2006 DB9 Volante did not have this option and although I have heard the door modules can be reprogrammed by a main dealer I decided to add a separate switch in to control the rear quarterlights.
The connector we need access to is behind the rear side trim, below the rear speakers, either side can be used and you only need access to one side.
The connector is circled in red in the photo above.
The window motors are supplied with power direct from the boot fusebox, and there are two smaller wires that control whether the window should go up or down, there don’t seem to be any sensors for window position. The 2 wires we need to tap into are the smaller (0.5mm) as opposed to 2mm and are White/yellow for up and Green/Red for down. Switching either of these to earth will signal the window to go up/down respectively for as long as you hold it to earth.
I cut the cables before the connector, soldered trailing wires in and then heatshrink over the soldered connections.
I chose to use a 3 way momentary toggle switch hidden under the centre console so I can open or close the rear quarterlights whenever I choose, irrespective of the roof position.
The car is now far quieter and has less buffeting when driven at speed with the roof down is the quarterlights are up. I also have a wind deflector which also significantly reduces buffeting.