The steering is active, so itโs uses input from the speed sensor. If the speedometer fails to work it will stop the power assist steering. You car being an import will likely have a speed converter behind the dash, loose connection here on this circuit will be the cause. You tapping probably remade the connection. Also the speed sensor on the gearbox can pop out the end, be loose, simply slowly down and speeding back up it can kick back to life.
By
Stephen ·
Today, about 7pm ish....grey with silver deep dish alloys, stickers on doors and bonnet, also lambo style rear lights with break light in the middle
Parked outside Yorks Gym on york road battersea (just after junction between falcon road)