1st day of the new year, and car does not start....
Gives HDC fault, transmission fault, engine fault, reduced traction.
Battery checked is ok, AA can't fix it, fault codes keep coming back.
Any idea? Tomorrow the car will be brought to the dealer  'per aspera ad astra'

This is a typical result of a low battery. Are you absolutely sure your battery is ok? Have you charged it? I am not sure if an extra earth strap was fitted in 2013, if not, then do that (lots of information in the forum for that - search "earth strap"). Charge the battery and do a do a hard reset before spending out on a garage.

AA did try with a booster, then a hard reset, charged the battery, checked the battery, reset the fault codes but no result.  'per aspera ad astra'

Did not check the earth strap, will do tomorow  'per aspera ad astra'

A bad earth will definitely give you those error messages. I hope that will fix it, otherwise I am stumped! Good luck.

A quick and easy way to prove / disprove the earth is the issue is use a jump lead as a temporary second earth if you have any.  2007 TD4 XS The work horse that earns its up keep
2013 SD4 HSE The posh one for towing the caravan
1973 Triumph Stag I bought in 2009 and restored.

great tip! thanks. I do have a set of jump leads
Freelander is our one and only car, thats the problem.
My Disco's were easy to work on, this is a whole different 'cookcie' never been to the stealer before for maintenance  'per aspera ad astra'

Ok, tried this morning with the jumpleads as an extra earth strap.
No succes..... car is now on a flatbed to the dealer  'per aspera ad astra'

Would be interesting to hear what was wrong

Hope its not too expensive  2007 TD4 XS The work horse that earns its up keep
2013 SD4 HSE The posh one for towing the caravan
1973 Triumph Stag I bought in 2009 and restored.

Could it be the steering lock problem ?

I will let you all know. Just called them, and they are working on the car 'per aspera ad astra'

Well, car is fixed, bad connexion somewhere in the loom between the computers. Took them 9 hour to find and fix it!
But i'm glad it's ok now  'per aspera ad astra'

I am sure that this type of fault will become more and more common in ALL cars as they get older.

Note to myself --- do not forget to extend warranty. FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 76k+ miles) (MY2015)

Nine hours? One imagines that whatever was on the end of a bad connection would show itself as having 'lost communication with' or some such once the car had been plugged in?

Cars are certainly very electrically and electronically complex but the tools to see into that complexity are available or is that just naivety on my part?

There was no cummuncation between the computers (pcm) or diagnosic equipment. That's what made it difficult. 'per aspera ad astra'