2013 XJL Awd portfolio. 90k miles.
Recently, eco start/stop light has been coming on but it goes away, when I stop and restart the car.
Not sure how many hours/days it takes for it to come back on - it seems random.
Now, same thing is happening with the air bag light. Both air bag light and Eco start/stop light come on, but go away, when I restart the car. They both come back on again, later in the day or next day - randomly.
Please advise.
Thanks

 

You have a 2013 has the battery been changed?
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Yes. about a year or so ago. I had the dealer install the oem Jaguar main battery.

 

That's pretty old for a main battery. We have seen many different things happen when the battery gets older.
So it's usually recommended to start there.

Have you checked for any codes yet?
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I was not clear. To be clear, i had the main battery replaced with a Jaguar OEM battery. Typically, I have the battery replaced every 3 years or so. The local store charges only $120 for a good main battery but I had the dealer replace, only because it had been in for service. I think it was only $220 or so. .Not a huge issue.
I have not checked for codes. Air bag light is no longer on. Only the eco start/stop light is on. I suspect that the aux battery needs replacement. I have posted separately, to find an after market replacement for aux battery. The same battery is around $70 in the UK - Exide EK 151 but I am unable to find a similar size/same round post version. I think if I pull the battery out and take it to a battery store, they might find a replacement.

 

Good luck I think your correct!
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This was in a prior post: Start battery: https://www.ebay.com/itm/15287241381...YAAOSw2tFaYckz