Sorry I am used to calling them trickle chargers, it was a charger / maintainer. used it 17 hours

 

Update to anyone still looking at this,
Today, after charging/maintaining the battery all night and a bit over the day, I re-replaced all the fuses I did last time, none were blown, and I replaced a few more that I did not do last time. the new ones today namely, "Front power point, premium audio amplifier, cooling fan", "Cabin accesory power", "Interior lamp switched power comprises - map, couirtesy, footwell, sunvisor, glovebox, In car aspirator", "Sirius Satellite power", "IHU Supply" (did this before, also did Blower motor fuse, general AC fuse), "Power Amp supply", may be some I did but missed listing. I tested all engine compartment fuses and they were good, as I can easily reach the tester on them, although I believe nothing related to the ac is in the engine compartment fuse box.

After doing this, the computer screen and lights returned, so one of the replaced fuses must have been faulty, not entirely pushed in or something, still no luck on AC blower but did some more troubleshooting.

I put the old blower in with new resistor, and took old and new blower out of the compartment and tested them wired up on a box in the footwell to visually inspect the fans.
When starting the car, the fan will move for a second and then stop, I hear a slight whirring sound which sounds like a low speed fan in the area but the blower fan is not moving,
Both the new blower and old blower will slightly spin the fan for less than a second and then stop when starting the car, there is also a small sound coming from the area.

I will next try to figure out my complex volt meter and see if I can test the positive and negative wires connecting to the fan.

I at least feel like I undid my mess with the screen working.

Thanks for reading.

 

The "small fan sound in the area" is the little fan behind the grill just to the side of the steering wheel. It is used to monitor the cabin air temperature and is always whirring away but you can't hear it when the engine is running.

Richard

 

Have you done a complete vehicle reset as in disconnecting both battery cables and touching them together?

 

Just because your battery maintainer was on that battery for 17 hours doesn't mean that it's fully charged and healthy. How do you know that battery can hold a charge?

I re-read this entire thread and you never told us how old that battery is or if you had it load tested as recommended in Post #13, above.

My bet is that your battery is old and weak. Prove me wrong. Get it load tested.

 

@JeremiahLovesJags , have a look at the thread of similar issues with @KILOCHARLIE .
Heed @Stuart S advice. It is spot on.

 

The new battery was installed in late february of this year, weather has been horrible and was busy all day yesterday so had to put off further testing and cont to use it with no ac,
plan to load test it, although I believe re doing all the fuses fixed the screen because it has had no issues since, hopefully ac issue is battery related. also plan to reset as jahummer said.

 

You likely “fixed” the infotainment issue when you were checking fuses and actually reset the system, similar to what I suggested with the battery cable disconnect. As for the blower fan, I reckon it’s not as simple as a battery. Could be the climate module below the screen, I’ve seen those fail. Also what you describe could be a faulty resistor.

https://www.samarins.com/glossary/bl...-resistor.html

 

that link is very useful thanks
are you referring to the ATC/auto temperature control module? I see that looking at some of the different diagrams, only scary thing is that some are saying it is a dash out job..
will test the resistor, but both the old one and the new one do not work, so by odds I assume the new one is not bad and it is something else, but it could be, won't know until I figure out the voltmeter settings and test it.

 

https://www.jaguarforums.com/forum/x...e-%245-184627/

 

to anyone wondering about battery
I did get some free time to load test it with a voltmeter directly on terminals
I do not yet understand all the voltmeter controls for blower motor area wires, but on the battery the voltage was 12.75, it did not drop below 10.00 before jumping up from alternator when turning the car on afterwards.

 

You don't have to follow my advice, but ...

 

"AUTO EXPERT SAYS MOST PEOPLE ARE IDIOTS"
Yeah, that's a sad reflection upon today's state of self-reliance.

 

Cee Jay,
For the record ...
You quoted me and added that TEXT IN RED.
I didn't write that, you did.
Please edit your post and delete your red text.
Thanks,
Stuart

 

I have taken it to be tested twice, both times neither stores used a terminal voltmeter. The testing according to that was good however, but at home I followed the basic 3 step voltmeter process, first prior to starting, second watching how low the voltage drops immediately upon starting, and finally after starting while running, the off battery was 12.75.

 

Probably an obvious question, but does the fan move freely when unplugged?

 

not a bad question, but yes, it does move, (the new one and the old one, although the old one looks rough and has particulate that comes out of it and whines while spinning), with both fans and testing both plugged in but uninstalled, when I turn on the car they will spin for half a second and do nothing else.

 

@JeremiahLovesJags , sorry to hear of your woes.
But something isn’t adding up here. It is one of the simplest of fixes for the mechanically inclined. And I am suprised it is going on so long.

Ask yourself,
Are you using the appropriate quality replacement parts?
Was there anything else touched?
Was the wiring harness pulled to tightly?
Are all connectors in good order and appropriately seated?
Was the procedure outlined in the Workshop Manual followed?
Etcetera.

With the number of hours on this perhaps its best to seek qualified assistance?