Just tried to jump start my 05 TL. Its been out in the cold (10 degrees) for a few days.

Initially the lights came on, but after turning the key to start, the car went dark. No sign of any electric anything on the car right now

Pulled & checked the battery fuse which shows continuity to both the #1 and #2 terminal.

I suspect a blown fuse somewhere. Looking for a wiring guide or electrical troubleshooting guide to determine how to methodically check downstream from the battery

 

Found good link by EE4LIFE

https://acurazine.com/forums/third-g.../#post15422203

 

Also make sure your battery terminals are securely attached. Mine did the same last week when I picked it up (everything lights up fine, but after trying to start everything went out) and found out both terminals very very loose. After tightening them everything has worked great.

 

Put a multi-meter on the battery terminals to check voltage, then check voltage at cable ends.
If OK, pull the top off the long fuse box next to the air intake and with the negative lead on the bat terminal, put the positive on power terminals at the box.
Have see corroded cables cause a problem.

 

Thanks guys. I had ruled out the battery in my mind because its relatively new (6 month old) Autocraft Gold battery with 875 CCA.

Pulled it in the house and hooked it up to a battery charger. Took overnight but it eventually charged and I'm back in business.

My guess is the battery drained fully and the uncharged battery froze with temps in the single digits

Looks like I'll need to find whats draining it