XK niggles

Grateful for any assistance. I have the 5.0 V8 2011 portfolio black pack. In the UK.

1. The boot parcel shelf is not attached to boot lid. It has little clips with a lever but they don’t seem to work. Any tips?

2. Air con is not working to get the car cold. It used to. Is it likely required to re-pressurising?

3. Can one buy replacement original or near original car mats / carpets?

4. Has anyone paid for a full respray? The paint is looking suboptimal in areas. Tempted to have a go myself. Plenty of scratches as well.

5. Parking sensors are not work at all. I have tried pressing in the little buttons on the back bumper in case they were clogged or something. It is showing up as a fault.

6. Dynamic turn lighting says not really working. I think this is a known fault and I have to just ignore it?

7. The red LED flashing light seems to drain my battery when I am on holiday for 2 weeks. It’s really annoying, is there anyway to stop the light (or whatever it is) draining the battery?

Thanks all. Partial answers also appreciated.