Eject problem,bright screen

Question edited for clarity.

Did you check the lock slider if it is like this one?

https://www.jaginfo.org/threads/dvd-navigation-disk-won%E2%80%99t-eject.112786/

https://www.google.com/search?q=2008+Jaguar+XF+navigation+disc+will+not+eject

Removing the player

https://www.google.com/search?q=2008+Jaguar+XF+remove+disc+player

..

I purchased a CD cleaner, ejected the magazine, inserted the disk after removing all disks in magazine, ran the cleaner through the cleaning process, then reinserted the disks and now both professionally made and homemade disks are working again

Use a bent paperclip and insert it into the small hole on the front of the player. This should cause the disk to eject. Reload the DVD and try again.

On my Mitsubishi 6-cd changer it won't load cd goes in and out 3times but spots it out

Dirty or damaged disk. remove screws in back of player (carefully) and gently slide disc out, do not force. Or take player back to store and ask them to fix or replace it.
Joe Don

You should try unplugging the DVD player from its power source then plugging it back in. Now try to open it and if that doesn't work than you'll probraly have to take it apart to get the disk out but sometimes the DVD players can get worn out or if you have a cheaper DVD player it might just be freezing up on you. I have had these problems before. I just took the DVD player apart to get my disk and then trashed it.

if the screen needs to be wired to the dash light switch it will not change unless the lights are on, if the wire is disconnected it is possible to bypass it making the screen stay bright.
although it would seem more likely that the brightness could be adjusted on the unit settings or by a button on the unit itself

My sugestion is to open the dvd player cover, then after you remove it the disc cover you screw out it to remove your disc.

Uhm..

Unplug it/turn it on and off

Try to press the eject button and lightly pry the tray open with your fingers.

Call support.

Good luck

Your internal LCD screen is damaged and you will need to replace it.