Hard/slow start followed by warning messages that pretty much every system on the car needs attention.

2012 TL on OEM battery. 50k miles. Car put into service 4/12.

Based on what I've read here, I see no reason to suspect anything other than a soon to be dead battery.

Any other thoughts? As far as replacement, is there any consensus regarding a superior replacement option?

 

Definitely battery and still should be under warranty. My original battery died after about 2 years. The dealer replaced it with OEM and (knock on wood) it's still good almost 4 years later.

 

Turned out to be the battery. Ended up going to Sears. Dealership was closed for the holidays and I had to get mama on the road.

 

Usually those shitty Optima batteries go pretty fast on our cars. Hard to think it would be anything else. lol