I have a 1999 D2 which has had a BCU problem ever since I have had it,I have to remove the fuse that is for the permanent live for the radio,clock and interior light,for some reason this allows me to use my blippers to lock and unlock the car.If I put the fuse back in the blippers do not work and the key will only unlock the drivers door.The only downsides are you have no interior light until you turn the ignition on and the clock and radio code need resetting everytime.It is worth a try if only to get you going again.