How quirky is this? I was washing my '06 S Type this afternoon. A half hour after parking the car it began making a whispering rumble kind of sound. My former car (Audi TT) did that a lot as the fan came on to cool down the engine. What I experienced today was the INSIDE blower running. The AC was off. The car was not turned on. It did this for 5 minutes. I'm guessing today wasn't the first time...I drive it to the office and park it, so I can't be sure.

The car has several months of warranty, but this is a first for me.

Even so, I love driving this car.

 

There's a jag TSB or something about it. Don't worry, it's not a fault (so long as it goes off after a while) - it's to try to prevent condensation build-up, IIRC. Gotta love them computers!

 

I came home from work, and came out to he garage about 20mins later and the fan was running.
I can't remember what was on or off, or what i did (this was before vacation!), but when I came back the battery was dead in 10days sitting, so the two co-incidences have me keeping an eye on this.
Kind of an insidious thing, am I to wake up every 1/2 hour in the night and go check! Or set up a webcam in the garage with audio......
In my business we make recording voltmeters for the utility industry, I am going to maybe modify one to record from a Fuke DC current sensor on the battery wire and keep an eye on the quiescent current of the car.

Will advise as I find anything - may take a while!
PEte

 

pdr1966.... Lots of things "stay alive" on these cars. I have a MUCH cheaper solution. When the car is parked for more than a few days hook up a battery keeper. I got mine from Sears for $19.99. It sits on the Dodge and cycles automatically. Now I'm not buying a new battery every year for the garage queen.

 

PDR1966;
You have a 2003 model. Is the battery original?? If it is and the car has just started doing this I would be suspicious that you need to replace the battery.
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Engine cooling fan on when parked: normal if hot.
Internal blower on after a considerable delay (20mins or so): normal to try to prevent misting up.
Battery flat after 10 days: FAULT. Could be a dying battery. Could be aftermarket add-ons, or other fault such as bad ground causing network messages when there should be none.

 

My inside fan would come on and off at irregular times and it was a thermostat issue...

 

So my Jag isn't the only one EVER to do this! Quirky stuff, but love driving this car. Appreciate the responses.

 

Thanks all:
The battery is new.
I will have to watch this more to see if it is really a concern, or normal.
The recording ammeter won't cost me anything, but will give me a really good 'picture' of whats going on to determine better if it is normal, or a fault.
"network messages" brings a thought to mind, I know very little about, and have not looked at yet, but considering I have removed the factory amplifier, and CD changer, and the radio head unit - could the cellular phone, and emergency messaging functions could be trying to send messages out - I have no idea, i do not have a SIMM card for the phone, and don't intend to get one the 'telematics' system is something I have not looked at, at all from a user or maintenance perspective and seams possible that the SType could be trying to 'call home" .....................ET Call HOME.....
Will have a read up on this a bit more.
Thanks
Pete

 

The network messages are supposed to stop after 45 mins and the car should switch to low current 30-50mA. But it must be locked and everything must be closed including the trunk (as if you're going on vacation, say).

pdr - which "fan"? There are soooo many.
The presence/absence of the sim won't affect any of the above. No it won't phone home.

 

Ok, so maybe if I left it locked would have been better.
I'm not looking for a problem, just thought the battery dead after 10 days was suggestive of one. My recording ammeter on it will give me a good picture, and maybe eventually I'll post what I capture on here.

Fan - was the defroster heard from outside, so probably was trying to reduce moisture - as this was only once I don't have enough experience to suggest it is a problem, or it is normal, time will tell.

Pete