I am just about to trash my X-type 2005 3.0 as it stopped working without a reason.

I used it on a very hot day in August here in Houston 45 Celsius. Had it parked outside while working. Got back home and parked it. Then three days later it would not start.
Al wipers, lights and radio are working. The battery is new.

Code reader sends out P1638. Got another used engine computer and it's still not working.

Hopefully someone will be able to help me out.

Albert

 

Albert,

I've copied your issue to X-Type forum for advice from members with the same model.

Graham

 

You seem to have lost CAN communications between the ECM and your instrument cluster.
The instrument cluster does sometimes get some poor solder joints on the main connector pins, so you might want to start by removing the instrument cluster, opening it and checking for fractured solder joints there.