Looking for some help please. Bought my 1st 2.2 litre XF last summer, it's on a 12 plate & I'm more than happy with the car. The problem I am having , is that when the temperature is very cold i.e. frosty, I start the car and when I try to put it in drive, I get a "Gear box fault" message on the com & the gearbox won't engage, this has happened four times over the winter. After I've left the car for a while it's been fine when I get back. Can any body tell me what's causing this & what I can do to fix it.