Pin-holing of the pas pipes could allow pressurized power steering fluid to leak into the under-hood and engine bay area.
The power assist steering (pas) pipes have been supplied with zinc-nickel plating that does not meet fully the corrosion protection requirements of jaguar's engineering specification. After an extended period of time in service, corrosion of the pas pipes will occur that may lead to pin-holing of the pipe.
What to do: Book this in with a dealer now. It affects a safety system.