How do I fix Espace boot stuck?

If you mean the tailgate stuck shut, I had the same problem with my 1999.

I was quoted £300 to fix it because I was told it was 'a major electical fault'.

I took it home, cut open the cover inside the boot, reached down inside the middle and pulled the 2 metal rods to release the boot. When open, you can unscrew properly and replace/ repair solenoid. Also would be a good idea to grease it all up.