Last and final update, and what an embarrassment! The VSC and ABS lights had me thrown initially as I continued to fear the worst for the Kluger. I had even gone to the length of purchasing a, "Foxwell NT510 Elite Scan Tool" - which is an outstanding tool I must say. Whilst remaining under the impression that this error simply needed clearing after the broken wiring on the trailer had initially caused the errors - I thought that I would be happily on my way. I eagerly scanned the car for these errors once the scan tool arrived on the Friday - it specifically contained the "Toyota" software and promised to deliver on all error codes...I thought that I was set.
The scan tool delivered on its promise and picked up the codes for both the VSC and ABS errors. The information it provided concerned me even more, but then there was an initial error that it had picked up, of which my last OBD II scanner DID NOT. A problem with the brakes - P0504, if I recall exactly. I had to recheck the brake light bulbs. Upon initial inspection they seemed perfect, but this time around I gently tapped the bulbs and only then noticed one of the filaments broken on one of the bulbs. At that point, I was almost too embarrassed to stand outside my own house with bulb in hand!
I installed new brake light bulbs to both sides, and cleared the VSC and ABS codes and expected it to be back to normal, however, the moment I started up the Kluger and applied the brakes, the codes reappeared and I still had no brake lights. I certainly wasn't thinking clearly. I then rechecked the fuses and found the "STOP" fuse (10amps) was blown - I had missed this too when I initially checked the fuses as the break in the filament was so small it was almost unnoticeable. A quick replacement of the fuse proved to be the ultimate answer. The codes cleared on their own and the brake lights were back to normal.
Had I been more meticulous with the checking I could have had the Kluger back on the road without all the fuss and bother, however I do not regret having purchased the scan tool as it will be an obvious bonus for all future problems to come.
Regardless of the embarrassment, I needed to update everyone on my experience in the hope that it will ensure that this is not repeated by anyone else - and a reminder to be a little more calm and diligent on the checking. Thanks to those who had stepped up to assist - it definitely helped.