Hi All
My Wife's 2004 X-Type has had an issue with a low buzzing sound in the dash that we have not been able to locate. The problem is if we do not drive the car at least once a week the battery will be drained and the car will not start. Has anyone else had this issue and if so what is the fix? I thank you all in advance for your ideas.
Dave

 

The buzzing could well be the air intake for the climate control sensor; there is a small grill near the middle of the dashboard.
Have you tried a new battery? If the old one is not holding the charge it may be past its useful life.

 

As Steve says, it's probably the cabin air temperature sensor fan that sucks cabin air in and measures its temperature as part of the climate control system. It shuts down some minutes after you turn off the ignition and remove the key. (Stay in the car and wait and listen!) It also starts up again as you open the door the car.

 

Removing the small plastic grill and blowing the crap that accumulates in the fan that feeds the sensor with a bit of compressed air (like for keyboards) sometimes helps quiet it down. After reading about the "buzzing" complaint some months ago, I checked mine out because I had never heard it. Mine is so quiet, you have to put your ear right next to the grill to hear it running. I still took the grill off to blow it out & it looked like a cat hairball that came out, lol.

 

Hi All
Thanks for the advise. I have had to replace the battery twice over the past 3 or 4 years. The buzzing is always on even after shutdown and removing the key. The buzzing will kill the battery if the car is not restarted in a 7 to 14 day period. My gut feeling is a relay is stuck thus closing a circuit which drains the battery. I had heard that this was a common problem with several different models thus was hoping that the cure would be easy to locate. I guess I just need a bit of a push in the right direction.
Thanks
Dave

 

It is common to think that the aspirator is not shutting down. It comes on every time you open the door. Doesn't need the key in the ignition to come on just the door opening.
The easiest way to verify is to roll the window down secure the car and walk away. Go back in about 20 minutes and stick your head in through the window. The buzzing should have stopped. Do not open door to check, if you do it will buzz.

 

If you are sure it is from a parasitic drain, you will need to get a VOM meter and disconnect the negative cable and connect the positive of the VOM to the battery and the negative of the VOM to the battery cable. You should be reading only a few milliamps. Anything 1 AMP or more would indicate a drain. You will then need to remove the fuses in the 2 fuse boxes one at a time. When the meter drops to less than an AMP then the fuse you pulled is the circuit causing the battery drain.

 

Thanks for the tip. I will give it a try in the morning.
It does make sense that that would do the trick.
Thanks
Dave

 

Suggest you might review the write-up on Quiescent Current Drain in my sig . . . compiled from a swag of such reported issues in the S-Type forum some years ago, it contains relevant data and methodology for testing and faul6t finding across all modern Jaguars . . . very critical how you do this and the required "sleep" conditions.

Best wishes,

Ken

 

Let's just admit to the fact that our beautiful X-400 Kitties are "Battery-a-Year" cars, driven or not.

It is simply - and truly - the nature of the beast.

(and woe is he who does not "hot swap"*)

*write your radio code down today!

 

I put a new battery in mine 4 years ago when I bought it; it's still there.

 

Not always so. I have just had to replace my battery for the first time on my eight year old car.

 

Hi All
Not to disagree with anyone as I know each vehicle is unique. We have only had to change the battery three times over the last 14 years so just about 4.5 years for each.
I will be checking out all the suggestions provided today and see it that does clear the problem. I will post my findings.
Thanks
Dave

 

Hi All
Thank you Avern1 Rolled the window down and after a half hour it is still buzzing; but after 45 minutes it did stop. Next I will check the filter and then go with start with pulling the fuses next to see if that will narrow it down.

 

I will have to do a little research but it is staying on too long. It is at least shutting down so that might be one off the list. I'll look into it later today.

 

Dave, the reference I provided in post #9 gives a QCD of less than 30mA after achieving full "sleep", which IIRC, is given as 60 minutes. If you measure anything more using extension leads on your meter (must not waken car!), then you have a QCD fault that will flatten the battery over the 7-14 days you state. The write-up discusses a systematic approach to pulling fuses (or measuring mV drop across them) to isolate the offending circuit.

By far the most common fault I have seen over many years, is that arising from creative after market wiring of replacement audio units . . . but that is only one possibility of many.

Best wishes,

Ken

 

@ cat_as_trophy. Read your p.d.f. on battery drain, really clear, concise and easy to understand and follow. I seen it was a "sticky" in S type. I think it would be well served on X type stickie as well.

Mod??

 

Yes; good idea Dell . . . and I echo you note to *** MODS ***

It is some years since the QCD and Battery 101 write-ups were done and we have since learned, not surprisingly, that many of the issues relate to other contemporary Jaguar models - the X-Types (X400), XK8/XKR (X100), XJ8/XJR (X308).

Cheers.

Ken

 

OK Cats explain to me how I get to your referenced location. I am new to this forum so need to be led to where the info is.
LOL Thanks Dave
;-)

 

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