wouldn't start this mornig

went to start this morning and got the red engine immobiliser light showing, eventually worked it out that the battery was flat in the remote ( luckily the other remote was ok ( as with the 90 and ex's disco i didn't have the key code so couldn't manually diengage the immobiliser) the 90 didn't have an alarm it imobbilised after taking the key out with an audible beep, this doesn't give an audible alarm apart from red dash light flashing ( have now replaced battery and got a spare in case) i had tried previously to get the key code for the disco from the dealer where it was bought and it was like talking mumbo jumbo

Just had the same problem but my remote had died.
Got it sorted here.

http://www.remotekey.co.uk/key-fob-reconditioning/

Having the same issues with trying to discover my EKA code.
The dealers know but dont want to tell me. Just keep saying bring it in and we'll sort it - FOR A PRICE !!!!!!!!!!

What if the battery has gone flat, does the FOB loose its coding. The Disco one needs redone but the battery was left for ages, then I got a new one, fitted it and it still doesn't work so not sure if maybe its lost it.

Can they get everything you need from it?

Give him a call.
Nice enough geezer.
Coding should be OK may just need resynching which he can tell you how to do. I thing it is also on his web page.

Great info! Thx.