Hi I have just had the handbrake fault come up on my 2005 S Type. I tried all the very useful tips, disconnected the negative supply for 10 mins, charged battery, disconnected module etc etc. As a last resort before ringing a garage I followed the guy on YouTube who earthed a wire to car and put into small module connection and then put wire ( he had a electrical gizmo ) into the other module connection and then put other end of wire onto positive of battery and the ehb disengaged. His video is only about 90 secs but very informative.
