89k miles, from a maintenance standpoint what should I be looking for or required to do to the car.

So far this is what I found wrong with it...

1.It needs a new line to the windshield washers.
2.Speakers sound is terrible.
3.Lighter jack will not hold GPS plug in.
4.Headlights are fogged
5.Cross bar on lower grill missing

 

I think by "cross bar" you mean the splitter vane. You'll have more luck searching with that name

6. Change the transfer case oil

 

Regular stuff: engine air filter, cabin air filter, fuel filter, change engine oil/filter, check brakes. Replace/bleed brake system if you think the brake fluid is dirty/corrupted.

Transmission fluid level is really hard to check on this car (the transmissions are "sealed for life"... =|-/ ), so I'd just drive it and try to decide if the transmission is shifting smoothly.

The biggest problem with these cars is with the Transfer-Case in the AWD. It is very small and contains very little gear lube (500ml, I think). The seals begin to fail and the fluid leaks out, a drip at a time, so there is very little way to tell if your T-Case is full or empty until it decides to self destruct. A failed T-Case is a multi $1K proposition (go ahead, ask me how I know...)

There is a "fairly simple" way to drain and refill the case and I suggest you consider doing that, eventually. But right now change the filters and start driving the car to begin getting familiar with how it feels and sounds.
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Jaguar - it's not an automobile, it's a Motorcar

 

Thanks all

Going to run the 3M kit for headlight restoration, got a few replacement parts on the way... Still can't find a solution for GPS plugin, do I have to replace the cigarette lighter?

 

Seems a lot of posters on here comment about the (Gear Box Fault) message or the (Cruise Control fault) message. My understanding is that these x-types have a history of the Throttle Body or Throttle Positioning Sensor (TB/TPS) failing. The problem with this is that if your TPS fails it's attached to the TB as one unit. So if it goes out you have to replace the entire thing and you can expect somewhere in the neighborhood of $800 for the part + labor - if you don't know how to do it yourself. Everything is electronic on it so there have also been comments that replacing it yourself may lead to calibration issues and added fault messages. I figure I'd mention this because I got the (Gearbox Fault) and it was my TPS that went out. I have 88K on my '06 so it's worth having checked out. Sometimes the connectors can just be cleaned cause they get build up on them, but this can solve a (Gearbox Fault) if it happens to you. It would also behoove you to spend the money on a diagnostic unit that will read your codes if you're mechanically savvy.