ECO mode ????

[Tonyash]

Really, really cheesed off, (polite comment for forum), with the irregular operation of the Eco mode on my 16 plate auto Berlingo. 
All worked well for months but now the Eco green dash light flashes but no engine rest when stopped at lights etc. I quickly realised months ago that Eco does not operate with lights on ....why???
All internal switches are off in daylight but Eco still not working, operating switch not disabled as message on screen confirms this, all I get is a flashing Eco green dash light and a running engine.
Am I missing something? no guidance in handbook on this at all.
Help please.

[Lighty]

The problem with this will be battery related most likely. Unless the stop start battery is fully charged, then the system won't work, especially if you are using lights etc.
Get the battery professionally tested, if it ok, then put it on a correct charger for 24 hrs.