2003 XKR. The alternator light on the gauges stays on but checking the voltage at the battery show about 14.2 volts.
Any idea of a cause for this.
THanks

 

When did it start this?
If the ALT was a 'rebuilt', then the regulator was probably NOT a correct DENSO unit but aftermarket.
If it just suddenly appeared, then could be fauty reg assy or faulty wiring/connection?(rodent chewing?)
Other than that, I have NO IDEA.

 

No idea of the history but it was this way a year ago when i first drove it.
No record of any alternator change/repair but that is meaningless.
Thanks

 

Faulty diodes always show up as warning light anomalies including WL ON with ignition OFF. 14 V is not too high so sounds like regulator OK

 

Thanks. I pay pull the alternator and have my local shop check it out. Not high on the priority list but it will get there.

 

This is what i keep seeing. Not sure if this is related but I keep hearing a series of 5 beeps coming from the dash area periodically.

 

This seemingly unrelated thread explains how the battery light works - there is a separate output from the alternator which controls the light:-

https://www.jaguarforums.com/forum/x...1/#post2895376

 

Very informative. THanks

 

Hi
I had the same thing when I changed alternators, there is a 3 wire version and 2 wire version..
I put a 2 wire on and the light stayed on charged ok, but not really correctly..
So I changed to a 3 wire and all was perfect again..

Check the terminals behind the altenator...

Good luck!

 

Thanks @markmywords This is the first i have heard of this. When the weather gets better, I will take a look.

 

Here is a weird one. THe Battery light that has been on for over a year stopped coming on after I replaced the drivers door module and the latch assembly!!
Any ideas?
Thanks

 

See post 4