My daughter has a 55 reg Almera Tino Auto SE 1.8 petrol with 53k on the clock. Without any warning, the auto gearbox will not engage reverse gear. The gear shift moves freely through the positions and all other gears engage as normal. When reverse is selected, the gear does not engage and the engine just revs when the accelerator is pressed. I have checked the oil level in the gearbox and it is correct. Would be very grateful if anyone has any possible solutions to resolve this issue.