So this morning (30 degrees in Philly) I tried to start my car, it started right away but stalled right after, I tried starting again, which it did then stalled right after.

I tried for a third time but this time it wouldn't crank at all. The instrument cluster dims like it normally would when cranking, but all the interior lights stayed their normal brightness. Can this be a bad battery, or maybe a sticking solenoid or relay?

 

Update for anyone watching:

When it warmed up outside it started right up without any problems. There was a check engine light which was U0141 (ETACS Timeout). I had the battery tested and its still good. I'm going to check the connections to the ETACS and ECU to make sure they're okay this weekend.

 

Maybe check your grounds and battery connections.

 

Checked all the connections just to be sure lol. It did the same thing this morning. 2 starts then stalls, then no crank at all.

I'm going to check the harness between the ETACS and the ECU then maybe pop out the actual ETACS and ECU to see if theres anything noticeable. I found this trouble shooting guide which pretty much narrows it down to that area.

 

my car bone stock barely started the other morning when it was sub 30 degrees out, weird, havent had an issue on any other days just that one morning,

 

Try turning the key to the on position and let it sit for 5-10 seconds then start it. Have you tried this yet? You on e85 or 93?

 

Isn't there a recall for ETACS? I remember I saw something in the mail about it

 

Update:

I replaced the ETACS which didn't resolve the issue. As a last resort I took the ECU harness off to find any potential problems which I should have done first. Low and behold ECU pin number 90 (CAN Interface) was bent. So far I haven't had any issues so I think that may have been the issue. On a side note I now have a spare ETACS if anyone needs one.