2003 Citroen C3 1.4 petrol. I have recently jst done gearbox transfer on my c3 all seemed good until I tried to turn engine over and am getting an eco mode warning light I have tried to reset this threw grey fuse,, also reset procedure key in ignition wait then disconnect battery etc I am running out of ideas and solutions. Eco mode is deactivatable by a button on the dashboard of your Citroen C4 Picasso 2 or if you press hard on the accelerator pedal because it is not essential for driving your car. Regarding the energy saving mode you will not have a choice, it will be automatic because the battery happens to be an essential function of your vehicle. The car DID misbehave during a dealer test-drive. Citroen UK now acknowledge that there is a major problem, caused by the Stop & Start System ( Eco Mode) malfunctioning on all cars that have it. As far as I can see, only the diesel-engined cars have the Start & Stop System. The ECO HEAT/COOL button of your hybrid functions to reduce the consumption of electricity thus, a reduction of fuel consumption. An indicator 'ECO' appears on the air conditioning display to indicate that the mode is on. Of course, with the ECO HEAT/COOL on it'll take longer than the usual amount of time for the temperature to reach its normal DeuxChevaux. 250 posts · Joined 2017. #3 · Jul 30, 2018. Just as an update as I have changed to a 2015 2 litre EAT 6 DS4 - this works fine as well, haven't tried it in cold weather but it has shown a message recently saying 'Eco system deactivated due to temperatures' on very hot days. Does not always work with a cold engine for a few stops Hi guys anyone had a same problem and get sorted before? I have a Citroen c3 1.4hdi 2004 model. It starts half swing but the battery light flashes but Battery doesn t drain and in the clock it shows eco mode. I can drive but the steering wheel is har.. ECO Mode will appear if you leave the ignition on and fail to start, it will disappear if you disconnect the battery and charge it up. That bit is working. The AA man bypassed the starter circuit, so you probably have a high resistance in the starter circuit, anywhere from the battery, via the ignition switch to the starter motor (because this All was working but then, the Radio lost power and we noticed the car was not working with the following problems: 1: Car will not start, it turns over but nothing else happens. 2: The display is saying ECO MOD 3: The remote central looking is not working 4: The side lights come on with the ignition 5: When you put the hazards on they flash but .

citroen eco mode won t start