Lent my 4.6is to a mate whilst I'm away. He called me today to let me know that the car struggled to start initially, and warning lights flickered briefly - problem now is the damn battery light stays on, even though the car drives fine. He drove the car for 20mins - turned off for 30 mins then restarted - all good except the battery light remains on !!!

Since then he left the car for 2 days and he told me it started ok 1st time of asking, but battery light is still on.

Weird thing is that 3 weeks ago I turned the car off but the Auto headlights stayed on, until I had to restart/switch off the car a 2nd time.
I can't sort out this issue until I return at the end of Feb, so 2 questions:-
- Is it safe to drive the car?
- does this sound a battery/alternator/some other issue?
Cheers