Hi On my 2004 S type jag. the rear suspension squeeks loudly when I lift up under the rear wheel arches. The noise goes away when the car is jacked up. I have taken off the strut and the noise is not there when I compress and release it in the press but the bottom pivot rubber seems soft could this be the problem.

SOURCE: Front NS Suspension Spring Dislocated

dave you must have a broken spring and will have to remove the strut to fit a new one dont drive with it like that.    no special tools needed  goood luck

SOURCE: Thumping Noise In Front End (Going Over Multiple Bumps)

Their is a air ride on these cars and yes it sounds like the strut is hitting when going up and down over bumps.

SOURCE: suspension system 2003 X Type

That all depends on if you have the comfort or the sport suspension. The sport is a bit stiffer, and the comfort is pretty floaty. Now, repair shops will tell you that you need to replace the shocks every 50,000 miles, however they should be good for at least 100,000 miles. But, how to tell. There are 3 items to check- how much "dive" does your front end have when you brake? If it is significant, then you might be due. The opposite is true when accelerating off the line. Finally, push down on the front and back end with your hands, and if it bounces straight up, then you should still be good on your shocks.

If you have rattles from the shocks, either the mounts or the shocks themselves might be bad. You want to replace the shocks in either case.

Note, that replacing the shocks on the X Type is extremely expensive.

SOURCE: Stuck hood on 2002 jag S type

Try and bump the top of the engine or just have some one hold the release latch and lift up on the engine until it pops open.