The wind vector cannot give you any sensible information once the wheels are on the ground. It gets its information from:
Which way are you heading and what airspeed
IRS- what has been the change of position (track and groundspeed)
From those it can work out what wind has affected you. Once the wheels are on the ground, it cannot now resolve a wind as the aeroplane is not tracking due to the wind. The only way you could have a wind readout would be a weathervane on top of the aeroplane with a subtraction for groundspeed!