sunroof assembly replaced - worked fine on floor but once in car, pops up ok but will only slide back half way. nothing seem to be binding . shop took it out 2 times nd same thing is there something to do with timing?? HELP

 

There are plenty of TSBs on the sunroof

And plenty of experienced help

On M' Lady Penelope the PO punted the sunroof parts away

See 13 - 20 , 13 - 30,

maybe make a video

JagRepair.com - Jaguar Repair Information Resource

 

my guesses: 1) control module not reset properly. This is the black box at the front. Resetting it is outlined in one of the tsb’s. 2) additional friction with top sunroof panel installed. Assuming some adjustments were made to align the panel with the roof; it’s possible there is some loading one each tilt/slide mechanism.

Daniel