babakx@gmail.com wrote:

> After following the owner's manual to disconnect and charge a drained
> battery, I found out that all my controls are not working: sunroof,
> map light button, ac, gear shift indicators, seat warmer, etc.....

The obvious thing is a bad fuse. The first thing to do is find the
pertinent fuse and swap another one with it.

If that doesn't work, then I would guess it is a computer that needs to
be reset and I don't have the slightest idea what the recommended way to
to do that is. One possibility is to remove the fuse for 5 minutes and
then put it back in.
--
Cheers, Steve Henning in Reading, PA, USA
Owned '67,'68,'71,'74,'79,'81,'87,'93,'95 & '01 Volvos.
The '67,'74,'79,'87,'95 and '01 through European Delivery.
http://rhodyman.net/homevo.html