I have replace the complete ecu kit and wiring loom engine to ecu. Still won't start and same message. Anyone have any ideas please.

11 hours ago, cazpau said:

I have replace the complete ecu kit and wiring loom engine to ecu. Still won't start and same message. Anyone have any ideas please.

Since this seems to be your first post, do we have to guess what the "Same Message" is ?

Perhaps a bit of history of the problem and a list of parts changed would help us to understand the issue.

What are the Diagnostic Trouble Codes (DTC's) as read with FORScan ?

Bought a Ford focus ecoboost 1litre 62 plate with message immobiliser malfunction service now. Have replaced the ecu completely and the wiring engine to ecu. I did this as I notice the key wasn't a Ford key and after further investigation it has had a replacement ecu in which a pin had broken. After all this still same message. 

What are you classing as the full ECU kit?  Sounds like you may have missed one of the parts during the swap.

On the Focus MK3/MK3.5 the PATS immobilizer system consists of (a minimum of) 2 programmed keys, the PCM, the BCM and the ABS module.

Especially the ABS module is often missed in case of PATS problems.


Also be aware that changing the PCM, BCM and ABS module will result in a VIN mismatch between several modules. This can also immobilize the vehicle.

Therefore when changing on or more of the abovementioned modules the modules should always be reprogrammed using the VIN and configuration (both CCC/AS-BUILT and Direct Configuration) of the receiving vehicle. 

After the modules are programmed correctly the PATS system needs to be reprogrammed / initialized. The Focus MK3/MK3.5 uses the latest generation PATS system which requires authorized security access. Since authorized security access is both expensive and access to 3rd party repairers is extremely limited this is basically a Ford dealer only job.