nannynick

I was wondering if anyone knew what would cause the central locking to fail to function correctly, having just replaced the radio - with a non-citroen radio? (please note, I didn't fit it, I am not technical, the radio was fitted by large car assessories retailer) For those of you who have replaced the radio in a C4, did you have any trouble with central locking following replacement of the radio? I am wondering if this something unique to the C3, or just to my particular C3, or if it affects all Citrown models, thus asking you Picasso owners. Detail of central locking fault is: Remote Key can not be used to open doors. Driver door can be opened using the key, and then if pushing open on the remote the other doors will open. Pushing lock on the remote, locks all doors. Pusing open on remote, within a minute of locking, reopens all doors. I have yet to establish how long the doors need to be locked for, for them not to be reopened by the remote... certainly after an hour, you have to use the Key, not the remote. Many thanks for any help/advice.