Check Brake Control Warning

Not really, apologies if this is what you feel, I checked your link and they really based in Norwich, while I am in SE London. Not sure what kind of conversation I will be having with them.

I must apologise, I posted the wrong link (sister company). They are based in Norfolk but cover Suffolk, Essex, North London. I appreciate you have said you’re SE London hence me saying you may need to travel a bit, but certainly not as far as Norfolk.

a1adassolutions.co.uk/?_gl=1%2A1nwoamw%2A_ga%2AMTg3MzQ4NjI4Ny4xNjkxMzQ3Njky%2A_ga_S43PNF6BNE%2AMTY5MTM1MDY0MS4yLjAuMTY5MTM1MDY0MS4wLjAuMA..

ADAS technology has been around for quite sometime but is still relatively new in the ‘aftermarket’ hence the reason most garages you speak to will not be able to help and the only advice they will be able to give you is to go to Fiat. That said, for those in the know, it’s all relatively straightforward.

In summary, those MOT centres that have said your vehicle will fail are in the wrong. It is not only Fiat that can solve this issue, but you’ll need to find somebody that has stayed up to date with the emergence of the technology. The link Dynamo posted, and this one here are good places to start. I’m sure there will be some in SE London too but none that I could recommend. Your insurance company, in the event of an accident, would easily be able to identify your vehicle as having ADAS, and faulty at that. In the event of an attempted claim, that could be a world of pain.

Thank you so so much Dwain. I wish I could so MOT now, but it is only in December. I probably will do it in November this year. 
Thanks again, it is a bit of relief. 
Will be bugging  official Fiat representative tomorrow.

That is correct,  only that "Check Brake Control" warning and nothing else.  Great advice @dynamo - thank you!

Just to clarify the mention of Electronic braking system ,
The fiat 500 has not got EBS ,the section in the manual covers vehicles that have this system fitted,which is the "fly by wire" type of system ,no fluid or wires etc ,there is normally a indication like a sticker to tell you the vehicle has this system ,I've only seen them on wagons /trailers but will be on cars I'm sure

I know what you mean Dave it's more info for the OP

Ha, so basically, if anyone failing me on MOT, they would need to tell me which paragraph from this document www.gov.uk/guidance/mot-inspection-manual-for-private-passenger-and-light-commercial-vehicles/1-brakes they failing me against?
Is this correct?

Good job they not using my scanner lol