It's probably worth considering that many of these errors might be due to a cold soaked/bad 12-volt battery. It's not uncommon to have a pigtail for plugging in a battery (or block) warmer in northern regions.
I have a set of these on order, and should receive them some time towards the end of next week. I bought them specifically because they weren't roof-height: they would accept my RTT at or below the cab height for the purposes of aero, but still provide rear visibility and bed access. Will post...
While IMHO it's a bit extreme to suggest only engaging conserve while stopped, the principle of mechanical sympathy would suggest it's good practice to avoid engaging/disengaging while putting the drive train under heavy stress (acceleration/deceleration), right? Flip it on while cruising. Don't...