Range Rover l322 2004, 3.0 desiel will not start.

Right so here it goes, this car has been a pain!

So i went out yesterday to start the car and it's not firing up I have aa out and they plug it in told me it's the immobiliser disable and is not recognizing the key, he said I would need to get the ECU reset but I have searched the internet but this need to be no help I need to get the car plugged in a the AA told me his computer only holds basic information.

Any RR specialist that can help me?

Thanks in advance

Welcome. This is the introduction , where you tell the community a little about you and your vehicle. For technical issues, you are better off posting in the relevant model section. Where you will get more views, as not everyone reads the introduction area.
Your best bet is to find a local, independent, LR specialist, or an autoelectrician with the correct diagnostics. Failing that it would be getting it recovered to a main dealer.
Your AA guy should have told you all this. S/he should also have known a local Indy.

Welcome to the forum

Like^^^ she says, if you make a post here
https://www.landyzone.co.uk/forum/range-rover.10/
Someone will know (not me) but someone There are different types of Diagnostics - certain RRs only work with certain ones. It could just be the battery in your key fob

Welcome aboard

Welcome to the forum