I have a 2006 S-Type 3.0, and I am having a lot of issues with my engine. I have been having the "restricted performance" coming on at random, and then going away, but now the issue will not go away. It was still driving when it first threw the code this time, but now it is saying "gearbox fault," along with my screens randomly flashing and throwing error codes. My existing fuses seem to be fine, but I am missing quite a few. Any ideas on what could be causing these issues, and whether or not the missing fuses could be the issue? Thanks for any help.

 

Probably a failing battery.

After that, read the codes and look them up in the free downloads on this site.

Unless you know the risks do not fit "missing" fuses etc!!

 

+1 on the battery.

How long have you owned the car? How long have the fuses been missing? If the car had previously been okay with the missing fuses, that's not your problem. A little more background would help us. My mind reading skills just aren't what they used to be...

Wiring diagrams here:

JagRepair.com - Jaguar Repair Information Resource

You can see a graphic showing details of the fuse panel. Be aware not all fuses were fitted, depending on options.