[Andy Netzel]

I'm not sure where to post this but here goes: I have a 2010 Titan and it won't start in cold weather, anything below 20f usually. Got best battery available and new battery connectors yet nobody can tell me why this is happening. Alternator, battery, and starter tested fine so it's apparently a mystery. Also my belt squeals when it's cold out. 3rd new belt this year and 2nd new tensioner so yet another mystery.

 

[big hoss]

Maybe check the CCA on the battery, that could be a problem if its too low. You could have a parasitic leak somewhere that's small, but coupled with cold weather where the battery has to work a little harder, could make it seem like a big draw to the battery.

 

[Andy Netzel]

Yeah I just got a new battery with the highest cca they had. There has got to be something drawing just enough power that it won't start but nobody knows what it is. It turns over just fine and starts as soon as I jump it. My wife has the same truck with a lesser battery and has had no problems this winter.

 

[primov8]

Sounds like parasitic drain on the battery. If you can get your hands on a multimeter, you should be able to check the battery and fuses to rule out possible parasitic drain on your truck.

 

[Andy Netzel]

I had AutoZone, advance auto, and Firestone test it and they all came up with nothing. My battery is not dead on a cold morning, turns over like a champ just won't fire up.

 

[jdmartin]

OK, well first test is this: get a known good battery and leave it outside in the same weather. When your truck won't start on the battery you have, swap batteries and see if it starts. If it starts, it is probably battery or battery connection related. If it doesn't start, it is probably an electronics problem somewhere. If it doesn't start, I would probably start with some new board relays and work from there.

If it is battery related don't rule out the battery. Cells work much slower in very cold weather (we used to store our electronic battery stuff on my ship in a freezer) and if your battery has a dead or dying cell, that could be the catalyst.

Good luck, man. Finding electrical problems can be a *****. I was an electronics tech in the USN and I feel your pain.