climate control

[kenkar]

I have just recently acquired an s type2.7d se. One  side (nearside)of the climate control will not go cold. I suspect a sensor? Any comments would be appreciated. Also I have two keys in which I have inserted new batteries. One fob locks the car remotely but will not open it. The other will not work on remote at all. Again , any advice?

[Graham C]

Hi Ken,

When my previous jag, an XFS told me it needed new key fob batteries, I put them in myself. Bad mistake!!!

The car wouldn't lock or unlock, plus various other mishaps. I had to insert the fob into the docking station.

I will now only let a dealership change batteries.

Graham.

[Old Peter]

Hi Kenneth,

 

I think you will need the keys reprogramming.  There are some auto electrician/locksmiths who will do it cheaper than a main dealer if you can find on indoor area.

 

On the question of the climate control, there cold be a faulty pipe or as you say, a sensor.

 

Regards,

 

Peter.

[Guest]

Firstly the heat problem is more than likely the DCCV valve (dual climate control valve) or the wires coming out of it. I had the same problem. The valve is designed to be fully open (full heat) if there is no current and as you adjust the heating, the current increases closing the valve, so no power = full heat. there re three wires going into the valve. From the drivers seat perspective the left most wire is the current feed for passenger (left) side of car. Middle wire is common earth and right wire is current feed for right (drivers) side. The wires go into a single 3 prong plug which plugs into the DCCV valve. There is insulation round them and they may look ok but a gentle pull and if there is a broken wire the insulation will fall away. A simple solder will sort it out.

 

The DCCV on the 2.7  diesel is located just behind the front drivers side fog lamp. You will need to access it from underneath. If it is the wires you should not have to remove the valve but can work on the wires in situ.

 

If the wiring is ok then it is more than likely the valve itself, It's a simple job to remove once you access it. When you disconnect the coolant pipes, quickly stick some wine corks in the open ends of the pipes to prevent the coolant leaking away. If the valve is suspect, use a car battery and test the valve operation. negative to centre pin and positive to the other pins one at a time, you should hear the valves open and close (loud click).

 

A WORD OF WARNING. **** Do not continue to use the car until this is fixed**** . Faulty valve / wiring can damage the climate control head unit and this is very expensive and difficult to obtain. 

 

Regarding the keys, one of mine was like this. carefully open up the key and check for dry joints in the soldering. A careful solder over the soldered pins of the components should fix things. If you want to speak about the DCCV I can give you my phone number and we can speak.

[Drivingdad]

Hi Kenneth, I had  climate problem this year and it turned out to be 3 broken wires leading to the dccv, check these out good luck.

[kenkar]

Firstly the heat problem is more than likely the DCCV valve (dual climate control valve) or the wires coming out of it. I had the same problem. The valve is designed to be fully open (full heat) if there is no current and as you adjust the heating, the current increases closing the valve, so no power = full heat. there re three wires going into the valve. From the drivers seat perspective the left most wire is the current feed for passenger (left) side of car. Middle wire is common earth and right wire is current feed for right (drivers) side. The wires go into a single 3 prong plug which plugs into the DCCV valve. There is insulation round them and they may look ok but a gentle pull and if there is a broken wire the insulation will fall away. A simple solder will sort it out.

 

The DCCV on the 2.7  diesel is located just behind the front drivers side fog lamp. You will need to access it from underneath. If it is the wires you should not have to remove the valve but can work on the wires in situ.

 

If the wiring is ok then it is more than likely the valve itself, It's a simple job to remove once you access it. When you disconnect the coolant pipes, quickly stick some wine corks in the open ends of the pipes to prevent the coolant leaking away. If the valve is suspect, use a car battery and test the valve operation. negative to centre pin and positive to the other pins one at a time, you should hear the valves open and close (loud click).

 

A WORD OF WARNING. **** Do not continue to use the car until this is fixed**** . Faulty valve / wiring can damage the climate control head unit and this is very expensive and difficult to obtain. 

 

Regarding the keys, one of mine was like this. carefully open up the key and check for dry joints in the soldering. A careful solder over the soldered pins of the components should fix things. If you want to speak about the DCCV I can give you my phone number and we can speak.

Your phone number would be great please.

[Guest]

Your phone number would be great please.

I've sent you an email / message with my phone number.