remote works when it feels like it had a upgraded rf and new battery in the remote when i press the button it lights up but wont allways open the locks got to put the key in the lock for it to open and the back doors wont always open until the key goes in the ignition other times the fob works fine like its supposed to do

Are you sure it's the fob and not motors or an electrical problem

i wont rule anything out after all its a p38 :violent::violent::violent::violent::violent:

Easiest way to check door and FOB operation is with diagnostics.

Most locksmiths can test the fob in a couple of seconds.

If the fob is OK and the problem is intermittent and is a problem unlocking, it is often a wiring problem, if its a problem locking its worth checking that the ignition barrel is not sticking in when you take the key out, this is often seen as a problem locking that works OK when you wait a few seconds before locking while the barrel pops-out.

You can tell if the signal is getting to the BeCM in seconds with a meter, check the voltage on the orange wire (pin 6) on the blue plug at the front of the BeCM, it should show 2v normally and 10v when the remote button is pressed. This will help you find out if the problem is before, or within/after the BeCM

If you dont get 10v at the BeCM, check at the receiver under the drivers side rear shelf, single plug with one wire at the receiver should also show 10v when the button is pressed.

The rear doors work on a different circuit to the front doors so that explains why their operation is different.