This is a stupid idea that an overpaid electronics design engineer at Sagem had during a very long tea break. He thought ''ll make an Eco Mode for the C3 to annoy the hell out of the Brits and then provide zero information about it" Seriously though
Youll might find when Eco Mode kicks in the car won't start up, very annoying. If you're working on the car checking through fuses like I was trying to find why the wipers wouldn't work for example. Try this.
Leave key in the Ignition at the standby position, just before starter motor position. Remove + battery lead using the quick release clip. Wait a few secs. Put + battery lead back on. Go inside car and its still stuck in eco mode according to radio display. Look just the the left of the steering column,on my C3 there are two buttons I never use, Central locking and a presettable Speed limiter alarm. These will be lit up by little yellow LED indicators (very noticeable in the dark when your'e stuck in Ecomode)
Operate the central locking button a couple of times and have a play with the speed limiter alarm button while your at it. Suddenly Eco Mode is cancelled and you can start the car up. WHY ? Don't ask me but it worked. I'm an electronics product support engineer so I have to get used to dealing with flawed designs.
GarryK
June 2009