Hello everyone!

I just bought my 16 Jaguar XF about two years ago. Drove fine. Then I started having electrical issues.

All at once I got errors on my dash saying that ABS, drive modes, cruise control, and electronic parking brake were all unavailable. Battery was kind of old so I replaced that, didn't fix the problem. Still drove it as everything seemed fine, battery voltage was normal both off and running. Now I got "charging system fault". My first thought was a bad alternator, I replaced it. While doing so I found that I had an oil leak that I couldn't quite locate, but it was leaking into the alternator. But in the end replacing the alternator didn't fix the problem. Anyone else had a problem like this? I live in the middle of no where and none of the mechanics in a 50 mile radius will touch my car. It's possible that the alternator I got actually isn't compatible, as I did do some budgeted shopping for one. Any ideas?

 

I don't have a technical answer, but the electrical system is very demanding and sensitive to discrepancies to 'normal'. It is possible that the replacement alternator isn't up to the job if it wasn't from a reputable brand and known to be compatible.
SNG have a Denso unit for considerably less than the eye watering price of genuine! (I looked up the 3.0)
If you still have the original it may be worth getting it tested to see if it really was the cause.

 

What voltage are you getting with the engine running across the battery terminals? You can easily measure it at the jump points under the hood. If it's around 14V or so your generator is OK.