After rainstorm, all power in vehicle dead

[Grilledman]

2006 expedition, 160,000 MI,
Go through a heavy rainstorm and parked, the vehicle ran fine. The next day I went to start it and all power was gone. The battery is fine and so are the terminals. Does anyone have troubleshooting ideas?

 

[99WhiteC5Coupe]

2006 expedition, 160,000 MI,
Go through a heavy rainstorm and parked, the vehicle ran fine. The next day I went to start it and all power was gone. The battery is fine and so are the terminals. Does anyone have troubleshooting ideas?

Have you checked basic items?

Do you have power to the headlamps, horn, etc., independent of the ignition?

Have you tried shifting to neutral, and starting in that position? Perhaps wiggling the shifter while in neutral.

Have you checked all fuses, and if all relays are fully seated?

Does the remote fobs work (if you had them and they worked prior to this issue)?

How do you know the battery is fine?

 

[Alwaysthinkin]

Just curious, how do you know the battery is fine?

 

[Plati]

Is the fuse box by passenger footwell totally dry?

 

[ROBERT BONNER]

As 99WhiteC5 and Alwaysthinking mentioned...start with the battery. Even if you have current checked the battery and it's OK, what about the battery terminal clamps? check for corrosion. It is probably something simple.

 

[Grilledman]

Thanks for getting back to me. I will check all the things you have recommended everybody. Thanks!