For future reference, the 2015 RAM, as it turns out, cannot run/run correctly with a dead or dying battery. Here's why: prior to me going to Autozone, I figured I would drive a couple of miles up the highway and let the battery recharge. After a few miles, my instrument display started blinking intermittently. Then my MPH needle started to intermittently drop to zero, then back up to my speed (like every 10 seconds). At the same time, an "error" message flashed on my EVIC. Something among the lines of "Electric brake assist system is inoperable", and the background lighting around the MPH numbers area began to flicker. I don't remember the message precisely as my attention was focused on where I was going to steer the truck if it were to suddenly die, and boy did it feel like it was.
Naturally, when I pulled off the next exit to double back, I hit every damn red light, and I could feel the idle drop a bit than come back up. I figured I'd try for the local Autozone for obvious reasons and feel thankful I made it.
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