Hi, first post and I have a problem !
I've got a 2015 Custom Limited with 27k miles on it and my battery keeps going flat. So, doing a search on here I found some had problems with the interior lights not switching off. So I took the bulbs out until I can find the time to fit an inline switch.
Battery still goes flat after about a week. No other drain on it. Commute to and from work each day, so its a 70 ish mile journey in daylight. Each time the battery seemed to last about a week. I charge it up fully and try again.
So either its the battery, or the alternator, but there are no warning lights on the dash. Oddly, when I park up I have noticed a faint noise coming from he engine bay, a bit like a very distant electronic alarm. Or some solenoid or motor whirring away - is that something draining it ?
I will stick a volt meter on it when I get home, what charge should I get a the battery with the engine running and with it off ?
I don't want to buy a new battery without knowing if its at fault as I do have a warranty which would cover the alternator, so I need to know which it is.
Cheers