Well there's some weight to that; with electronics there's very little you can do to rig something together to get you home. An extreme example would be if a fuel pump died on a carbureted car you could hang an empty jug/bottle from the antennae to get home. However, most electronics (ECU/PCM etc) have proven to have outlasted many mechanical parts- and newer designed components (both mechanical and electronics) are generally more durable too. Nissan, Honda and Toyota products from the last 10-15 years are probably the most reliable vehicles overall.
I agree here, without a doubt. If one of the major systems goes on the fritz, you're sort of screwed if you're out on the trail. But your second statement sums up the way I think about it. In all reality, these major systems are pretty bulletproof. Like you said, they generally outlast a lot of mechanical components.
You're still one creek crossing or voltage problem away from a long hike.
True, but then you could say the same thing of a first gen X. I can't think of a system off the top of my head, with the exception of the drivetrain control computers, which have proven themselves to be extremely reliable even in harsh conditions, that would render you motionless on the trail. Maybe the 4wd actuator?
Here's the way I look at it. For a long time I drove a Land Rover Discovery II, generally agreed upon as one of the most unreliable 4x4s ever built. The electrical design on that era of trucks was nothing short of catastrophic. But I did a fair bit of exploring with it and my experience was that the main electrical components, such as the computers for the engine and trans, were the most robust and they never failed in 3+ years of mud, rocks, and many water crossings. I had the truck in water over the hood and they never failed. Many other things did, but the most important computers never did.
Now consider that the Nissans we find ourselves in today are leaps and bounds ahead of the Land Rover in terms of electrical design and reliability. Next to my 2001 LR, even the electrical system on a 2014 Frontier looks super simple. What's more, they actually have decent connectors and actually make a bit of sense.
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And if my Disco's electrical modules could cope with all that, then certainly the much more robust and better designed stuff on a new Frontier or X is up to it. If you think about it, they are some of the few vehicles that can still be tinkered with in your garage or driveway. Compared to a lot of similar overland type vehicles, the Frontier and the Xterra are very simple. Compare it to, say, the 2014 4Runner. Much less electronics, and much simpler. And simpler is better. At least more robust/reliable anyhow.
That's just my experience/opinion anyway. YMMV.
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