Massive Electrical System Failure: Is my car Hunted?
 

The followings started in chronological order during last several days.
(05 4.4 52Kmi)

1. All the ashtray electrical output died. No 12v outputs.
2. False-positive Airbag and Front Seat-Belt Warning Signs accompanied by alarms that won't disappear.
3. Seat-warmers dead.
4. Final Draws: Headlights blinks erratically during driving, inside lights turns on and off as well that persisted no matter.

I had #1, #2 problem two years ago. They explanations were, for #1 blown fuses, for #2 discharged battery. After recharging the problem disappeared.

I assumed that soon battery replacement is required so I searched the forum for few hours for replacement battery.

Since I had my car re-certified a month ago I took them in yesterday. They called me in the afternoon they are narrowing down to locate plausible cause for the problem. Obviously no battery issue.

Any expert opninions?

I hate electrical issues. I'm no expert but have suffered through some in other vehicles. First thing to do is to check all grounds.

Ignition switch.... it can cause all the electrical gremlins you describe..Have the dealer replace it. Its cheap and quick.

Voltage regulators are dead.

Isn't the voltage regulator part of the alternator?

Thanks for the suggestions. I will keep you posted what dealer tells me.
I took a multi-meter measurements on battery it showed 12.54v and 13.95v with ignition off and on. I guess my battery is good.

yup.. mine lights inside/outside was flickering like the X-MAX lights turn out was the voltage regulator.

my window on the passenger side rolls down by itself. the germans are not good electricians. the americans are much better

Do a search on the ignition switch on this forum. I'm telling you it is eerily similar to what your experiencing and how it is still a mystery after trying a few things.

I had that problem. The switch on the door had a bad connection.