This moring i went to the car as normal everything was fine unlocked on the key ect

I have gone to the car after getting to work and the car wont unlock on the key no more :s i can lock the car and open the boot off the key but no unlock. So i have to put the key in the door annoying but will do for now. The really annoying bit is every time i open the car with the key it doesn't disable the alarm so every time i put the key in the ignition the alarm gos off until i start the car which then stops the alarm. Anyone else had this issue ? And know of anything to check ? Not tried the other key i will when i get home. Batterys are fine in my normal key as the other 2 buttons work. Cheers

Its working again. took the key apart put it back together and it works haha

Try a new battery in the keyfob?