Dead battery- what could it be?

[blue62]

In the passenger wheel well behind the wheel well liner there is a switch and a valve that are linked to the EVAP system.
The clicking sound could be related to those.

[MikeMcMo]

Originally Posted by blue62

In the passenger wheel well behind the wheel well liner there is a switch and a valve that are linked to the EVAP system.
The clicking sound could be related to those.

Thanks! Will look into that.
But can you think of a reason that it would have been clicking on and off while the car is sitting, no key in the ignition?

[MikeMcMo]

New development for anybody still following!

Used my pal's charger to bring the battery back to life. When connected, I immediately heard a clicking from the passenger side in the car, and it sounded like a relay or a door lock constantly locking and unlocking, once every 1 to 4 seconds at irregular intervals, whether the key was in the ignition or not, whether the car was running or not.

Today I had time to try again, and re-connected the battery, then started pulling fuses. The clicking stopped when I pulled out E4, which controls the passenger seatback switch. I put the fuse back in and then moved the seatback forward and back and the clicking stopped. Great! But what caused it? I don't know. And what would keep it from happening again at random? I don't know.

I had the seats out 2 winters ago to put L-seat seat covers on and may have missed something when putting things back together, thought the seats have worked fine since. I guess I have to pull that seat and snoop around. Too bad electricals are a bigger weak spot for me than all my other weak spots. Anybody have an clues?

[MikeMcMo]

Originally Posted by blue62

In the passenger wheel well behind the wheel well liner there is a switch and a valve that are linked to the EVAP system.

Thanks for the tip, but it turned out to be something under the passenger seat. Pulled the fuse for that and it stopped. Put the fuse back in, it started again, but then I hit the seat adjusters and it stopped. I have to take the seat out and see if there's anything obvious I can see but I'm not optimistic, and I don't know if I could count on it not happening again and running down the battery at the worst time, like in an airport parkign lot. I'm outta my depth with electrical stuff so might have to throw myself upon the mercy of a shop.