I have had a intermittent problem with the rear,( barn style), door not unlatching. The van is an 18 plate which I bought last February from a main dealer. I had it in a week ago to the same dealer that said it just needed adjustment. This worked up until yesterday but now the problem has come back with a vengeance yesterday and even worse today. It’s getting harder and harder to overcome this through perseverance of jiggling the key back and forward. Initially I thought it was the catch rather than the central locking as if it isn’t going to open there’s no feel of resistance when I try the handle. Just feels loose. There’s no access through the sliding door as the side is racked and shelved out for screws and nails, etc. It’s booked in tomorrow morning to the vow dealer I bought it from but wondered if this is an issue that’s come up before? It’s pretty embarrassing telling customers I can’t do a job cause I can’t get to my tools or materials in my van,( I am a carpenter). Also doesn’t help that I am losing money through the hassle. Does anyone know if I can overcome this if it happens again? Thanks for any help guys.