2004 Coupe: I have now completed owning my XF for one year driving only 3012 miles. I have done the Sticky Key Fix, The RCM solder, Me so Horne & cleaned the Air Pump Relay contacts. Thanks to this forum owning my XF has been a really enjoyable experience. My battery is only a little more then a year old but with the XF electronics being sensitive I have been using a float charger & only tried to back out of the garage once with it connected. I have resolved a problem with my spoiler down limit switch. I have purchased a cabin filter, Bosch CPS, Mobil 1 & Mann Filter all with comments from the forum. Without this forum I would have a hard time affording such a great car or knowing what to take care of. It is the best car I have owned. Working on my XF is part of the enjoyment of owning it.