Hi there I have been reading up on this site on reasons why my battery light is on. I have a brand new alternator installed along with new + battery cables and I cleaned up the ground cable around the terminal and also have replaced the battery. I have seen the alternator charge between 14.5 and 15 volts a couple of times but the rest of the time its between 12.90 and 13.15 volts. The battery light goes off once in a while. Please help getting frustrated.

 

Welcome to the forum 2002JagXtype,

I've copied the question from your Intro thread to X-Type forum. Members here with the same model will be able to help.

Graham

 

I think it's like my S-Type: a smart(ish) charger, voltage controlled by the PCM (which has 1-way or 2-way comms with alternator).

Check all wiring involved - see JagRepair.com - Jaguar Repair Information Resource