Where is located the valve to recharge the ac gas

The low pressure side to the ac will be the Schrader valve that is the smallest size. If you are recharging it yourself try to fit you valve on both valve and you will see what I am talking about.

There are many ways to recharge an ac system but to do it correctly is a bit more in-depth. You can read the ac tag under the hood of your vehicle and purchase a can of coolant then hook it up to the low pressure side as shown on the can. Start the engine and follow their instructions. If you have a leak you should add UV dye to the system to locate the leak then repair as needed. To recharge system I recommend purging the system to a proper catchment contaner, recycle the refrigerant as required. Put an ac manifold on the high and low ports of the ac system (they are sized to only fit in the proper location) then attach a moisture removing vacuum pump create a vacuum in the system of 20lbs at sea level or more. Close the high and low pressure valves and disconnect the vacuum pump connect the refrigerant to the vacuum line, start the vehicle, turn on the ac (fan on low) add the amount of refrigerant that your vehicle tag requires.

LOOK BACK LOWER ENGINE FIRE WALL FOR THE EVAPORATOR LINE WITH A BLUE CAP THAT GOES THROUGH FIREWALL THATS YOUR AC RECHARGE PORT.

1. check your refrigerant pressure and if the reading is below 20 psi then ur gas is less
2. locate low pressure service port that reads L
3. start engine/ turn ac on
3. recharge gas to max pressure between 20 and 40 psi max.
4. feel the low pressure line if its cooling while ac is running...the job is done...

The low pressure service gauge port valve is located on the A/C manifold and tube. please rate, thx

Hello AC is a little tricky when it comes to Jaguar cars as it has a certain system to charge the AC. If the problem is only low on AC gas , you have to pressure test the gas circulation to make sure that there is no leak , as recharging will not do the trick if it is a leak problem. If it is a matter of short on gas and pressure test proves that there are no leaks , then all what you have to do is connect the gas supply to the inlet gas pipe and charge slowly and on phases , while engine is running and AC is at low speed. You have to feed the gas at more than one time and close as Jaguar would not take the gas at once , it has to be done more than once at small portions so that it will take the gas. It is tricky as you have to know about AC pressure values , as if you put less that required AC would not cool properly , and if too much Compressor will disconnect and would not run properly Hope that helps

There are two A/C refrigerant lines. The small line is your high pressure line and the larger line is your low pressure line.
Start at the fire wall and follow the "large " low pressure line to the compressor. The low pressure charge port will be some where on that line.
DO NOT try to recharge on the high pressure side ( small line )
Good luck, let me know.
Regards,

The largest diameter line is the suction which is low. The small one that runs to a coil by radiator is high pressure. If there is no cooling then you may have air in the system which means a leak must be fixed first. Are you sure the compressor is engaging? You should hear it click and the engine bog down a little.

It is under the car in the middle behing the oil pan, up a little. You can crawl under it and see it and recharge it without jacking it up

You have a large diameter suction pipe 1/2" and a small pressure pipe 3/8" coming from your a/c compressor, follow the larger pipe until you come to a plastic cap sitting on the line, take off cap to see filler valve. Looks like a large tire valve.
Gerry