Old man sirius

Hi. Also having an issue with drive away autolocking on my 2002 V6 SE S-Type. I can lock and unlock central locking using the internal driver's button. However, if I drive away and the autolocking locks the car I cannot unlock it using the internal driver's handle or button, I have to lean across and open the car using the passenger's internal handle. This has only started happening in the last 5 days. Is there a way I can disable the driveaway autolock feature (tried the method mentioned for xfs and that hasn't worked) or is there a simple fix? As I said, I can lock unlock fine from the inside driver's button and handle, unless it's the autolock feature that's locked the car. Handy with spanners but have always struggled with the dark art of electricity