Having trouble unlocking car! Will open if i put key in door and will lock with button but it wont unlock it. Any ideas?

dodgy contact in the fob possibly? Low battery also possible. Easy enough to take apart and check/ replace battery. I think the battery is a CR2032

Decided it wants to work now so yea i agree dodgy contanct or battery. Orderd one of ebay £3.50 and that was the most expensive

Replaced battery in fob 2day. Spot on works perfect everytime