Habitation Door Failure

I have an Autotrail Imala about the same age (15 reg.) I know it's not exactly the same as your Tracker, but I wouldn't mind betting that the door lock is the same. I had a problem with the hab. door thinking that I  had pushed the small locking lever inside when I went out to the washing-up area straight after breakfast with the temperature about 10 degrees and couldn't get back in! All the keys , phones, money and warm clothing were locked inside. After a 3 hour wait a locksmith let us in through the drivers door - in about 10 seconds (£85) and I realised that the locking lever had not been pushed down. This happened again the next day but with the front doors unlocked, and I checked the 2 'plates' on the door frame and re-aligned then as they seemed to have moved and were not engaging with the pins on the door properly. That was a week or so ago and all seems to be ok now but I will have to keep an eye on it. Have you resolved your problem since your last post? if so would be interested to know how.

Could I suggest, if you haven't done already, is to post this on the Out and About Live free Forums.

They have a few similar questions about the door problem.

Apparently a 'lot' of grease keeps the mechanism working but the new doors arrive from the manufacturer with none or a minimum of lubricant.

There seem to have been quite a few problems and complaints over the years but, as with most Motorhome/Caravan manufacturers, they don't seem capable of giving a problem free vehicle to the buyer.

forums.outandaboutlive.co.uk/forums/Motorhomes/Motorhome-Matters