The owner told me he tried 4 Low this morning and there was no error. When I asked him if he had tried multiple times, the answer was "I'll try it again tonight"......

What are the chances of the N23 updated FDCM not causing the 4 Low issues at all? Or is it just a matter of time before it does without having the latest software update?

I kinda want to tell the guy to keep trying it until it faults, but as I'm picking the car up tomorrow I'm sure he doesn't want the extra hassle of taking it to the dealership to get the software updated and the error cleared. The problem is, the whole time I'm in Perth no Jeep dealership will be open due to the long weekend. Annoying!

You can clear the fault by removing fuse 25, then driving a few metres, reinstall the fuse.
I had the N23 flash carried out a couple of years ago, only had a problem on one occasion.
I'm waiting for more feedback on the latest flash, before having it done, as the fuse trick works.

Contact jeep head office and track where n23 update was done, they had to replace my control module unit and re flash, the n23 update fried my control module unit, jeep replaced parts and fix at their own expense, control module unit is around $1000 just for the part, I'd chase it up if were u ;) good luck

2007 Commander Diesel, without notice has started to leak fuel from somewhere towards the front of the engine.

Any clues out there as to cause and what is needed to fix. Car has just clocked 104K

Remove the engine cover (2 x 10mm bolts) & get someone to start the car while you watch, you may be able to see the leak.
here is a previous thread about fuel leaks.
http://www.ausjeepoffroad.com/forum/...d.php?t=133083