Hi, My front window has condensation on it. When defrost switched on it has gone but with auto mode it slowly comes again.
I checked service manual and found the "Evaporator drain pan" at the bottom of the climate/heater assembly but how can I clean it or remove any blocking material (dust, leaf, etc...).
Thanks for any advise - if there is any...

 

Do you have water dripping under the car when the AC is on?
That should tell you quickly if yours is plugged?
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Hi, Thx for the response.
As this is winter I can not check it out correctly now but there was no water underneath in the September to November time. Also in the last few month there was moisture on the windshield when the car was starting - after a minute it has gone every time.
So how can I clean the drain out?

 

I am not sure because these late model Jaguars bury the condensate drain and I can't find any outlet under the car. It seems to just weep from around some of the under body panels.
The old cars would have a rubber tube and you could back flush those.
Sorry not much help I know!
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Try this:

1. Close all dashboard vents.
2. Start engine.
3. Set Climate Control manually to AC ON, temperature to coldest setting, and recirculate inside air.
4. With the car parked and the engine running, use the manual fan speed controller to vary the fan speed between the fastest and slowest speeds. Repeat this for at least 5 minutes.
5. Stop engine, exit car and look under the engine for a puddle of water.
6. If there's no puddle and you have repeated the process several times, you may have to see the dealer.

 

I thought it was a straightforward matter for any shop to unblock the drain with an air hose from below / outside. It is common practice.

 

Is the air con working ? The refrigerant gradually leaks out over time and if less than spec, means its ability to de-humidify the air in the car is reduced. Maybe an air con service is needed. That's my tuppence worth anyway !

 

Hi all, - 1st of all: thanks for the advises...
Step-by-step:
unfortunately there is no dealership in my area, at least 3 hours drive, and I had not so good experience with them...

I had cleaned the drains in my previous cars, but there is no one available on this however it should (may be it is in the top of the heat-child in the top of the transmission - so it can not be accessible...)
- yes I also thought it is common problem and easy solution / process, but as this thread shows it is not...

AC checked, pressure is OK, works correctly.

Actually I was surprised about the service manual that shows nothing about this problem.

 

Often the drain tubes from the air con can be found after the wheel arch liners are removed. I'm not saying this is definite, but it might be worth a look.

 

Not on the XJ? I have looked and even had my car on the lift while running. All I can see is water dripping out and around the under-body shielding.
I also have cleaned condensate drains using an air hose before but there does not seem to be a hose where you can get access to it.
At least I have not found one yet and so far I can't find anything in the shop manual although I bet it's in there somewhere.
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