Electrical Issues - RCL and Heater Blower

[bigcheez2k3]

Having a couple of issues, firstly my remote central locking isn't work. Can lock everything just fine by putting the key in the door but not using the fob. I thought it was the battery as it was being intermittent on Wednesday before stopping completely. Changed the battery but that hasn't done anything.

Any ideas? It's a Ph3 with an RF fob. Had the windscreen changed on Wednesday but I'm not sure that makes a difference.

Other issue is the heater fan, the knob sometimes controls the speed, most of the time it doesn't though and it will randomly come on and off as you go down the road. Again, a Ph3 with climate control(I think, it has auto on the fan settings and 21 on the temp) AC has been removed.

Thanks