Today I discovered that I cannot put the larger of the 2 rear seats down. The smaller rear seat (behind driver) is fine but the lever on the 2nd fold-down seat is having no effect and is just loose (usually it requires a fair amount of force to lift the lever which allow rear seats to be folded down). I use the car with seats down every week to accommodate my fishing tackle. I fear that the latch mechanism (similar to doors and boots) has shut incorrectly last time the seat was pushed back into the upright position. I have had all the nuts and bolts out which hold the seat in place but still can’t get good access to the closing mechanism. I am further hampered by the boot cover mechanism, which attaches to the troublesome rear seat. Unfortunately, to remove it you need this seat in the down position. So even when the seat is only held in the car by the latch which is stuck, I still cannot see enough of the latch mechanism to try and prise it open!! Please has anybody any ideas bar taking it to a Merc garage?