I'm recharging my air cooling system, and online sources say that the 2004 XJ8 comes in one model with the AC in the engine compartment, which takes 650g of R134a; and a model with the AC in the rear, which takes 800g of R134a.
I don't even know what the AC looks like. How can I tell which model I have?

 

Hi Xeno,
Some LWB (long wheelbase) X350 and X358 cars have an extra air conditioning system for the rear passengers. If so, there is a separate control panel in the rear of the center console for them to adjust their own temperatures. If you haven't got a long wheelbase car with rear (aka 4-zone) aircon then the 650g figure is for you.
Mine does have the rear aircon, so I will need to use the 800g amount.

Pete M

 

When you say "separate control panel in the rear of the center console for them to adjust their own temperatures," do you mean there are controls to set a different target temperature, or just vent controls?
What I have is rear vent controls, shown in the picture below:

 

No rear AC in this car.

 

Yep, nor rear A/C. With the rear A/C, it would look like this:



Best regards,

Thomas