Cheers for the reply Ottoman, I'll break the news to her gently!!!
I didn't realy consider the readout display, as it was displaying! Just thought the actual sender might need re-calabrating.
D'you think this could be caused by the battery being disconnected then reconnected. I know the Lag doesn't like the power spikes when reconnecting a battery, hence leaving side lights on to stop the dash going back to KM! Might have a hunt round a scrappy for her see if I can pick another display up cheap to fix the problem.
Not all displays are interchangeable Mikey, It needs to be the specific display for that car.
Some Members have tried fitting new displays from breakers yards etc and found they would not work.
I would try the easiest and cheapest option first .
Keep us updated on how you get on.