Hi my daughter's 2015 Fabia's battery seemingly died and it appears I can only get an EFB at short notice (the MOT's due in 1 day), how soon do I need to get software changed, if at all?

TIA

Are you sure the original battery is AGM... They are usually quite expensive and not normally used a original equipment. I'd therefore guess the existing one, if the car has stop-start, will be EFB already.

Thanks but it's a Halfords AGM027 so guessing someone upgraded it at some point.

Now I don't know what to fit

Edited 38 minutes ago38 min by semiroundel

Ideally as soon as you can, use something like Car Scanner ELM OBD2 to register the new battery, and change the type back to EFB if needed. Be surprised if it's actually been registered as AGM in the first place, they probably just slapped it in - which may well be why it's died.

As above, if you have an ELM327 obd connector you can probably check and change it with Car Scanner app on your phone.

If not ask the garage that does the MOT to do it for you as they will probably have the right kit to be able to.