I don't want to get completely off topic here but in a nutshell this is the problem that Nissan experienced and the reason why we're having so many issues today:
A brief history of NISSAN and the Navara problems... from about the mid 1980's nissan made great cars, they were now rust free and uber reliable with proper japanese tech, prob every person learning to drive up to the early 90's learnt in an old trusty micra... sadly though by the late 90's early 2000 they were losing money hand over fist so a collaboration with RENAULT, 'you know' the company who make brilliant cars out of paper, cardboard, the occasional bit of metal and wiring with virtually no insulation whatsoever, to share engines/chassis and french tech?... this brought us the last of the Primera's (the futuristic one which... err... didn't progress well into the future) so nissan was then even more in debt, RENAULT bailed them out and bought a 51% controlling stake in the company and cost cutting began.... NOW HERE COMES THE NAVARA BIT, and it is just my opinion!, the Navara D22 program/line was already in full swing so any cost cutting would have been minimal, Sadly though the D40 was a different matter, by the time the D40 was introduced the cost cutting was in full swing with the Primara and Note sharing engines and platforms with the 'super' Renaults, NOW HERE'S THE PROBLEM, how do you build the Navara D40 cheaply, the engine isn't really fitted to many vehicles, so thats out, the chassis only really can be adapted to the pathfinder and that's not a big marketable vehicle so what can you do..... Well you cut back.. seriously cut back, a lot of electronics, switchgear are shared and can't take the harsh environment a 4x4 pickup goes through, smaller cheaper bearings..... less protection against the elements..... The D40 has suffered many faults since introduction, in the early years it was half shafts, turbo boost solenoids and numerous 4 wheel drive sensors..... Sadly now we're at this point whereby the chassis are either rotting from the inside out and can even fool the best of MOT examiners for many years, by the time it does shows its ugly head it's too late....... OR you place a bag of sugar on the wrong point of the truck bed then all of a sudden the chassis joins the decepticons and decides to transform into what can be best described as a children's See-Saw on a playground....... either way it makes the vehicles so attractive to new buyers with the great looks, practicality and presence...... YET underneath there hiding a frightening prospect of possibly killing one of your kids!!!!!....
