Forums / Citroen C4 Picasso and Grand C4 Picasso (B78) Road Tests and Model Reports / ECO system not working - C4

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ECO system not working	Please Register to enjoy additional Member Benefits

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davecarb United Kingdom

Thu Apr 26 2018, 01:09pm

Member No: #46126

Joined: Sep 07 2016
Location: Merseyside

I have a C4 Picasso 1.2 Puretech which is 12 months old. Took it to my main dealer this morning for its first service.

The stop start ECO system rarely works, even after I have had a long run. Garage said that as I had done low mileage and as I did mainly short journeys the battery was not at the level to allow the ECO system to kick in. They suggested that I leave it with them overnight and they would give the battery an over night charge. Seems a lot of hassle and certainly inconvenience for me. They were not going to charge a fee for this.

Is it possible for me to charge the battery at home using a very old charger? Will I do more harm than good with a modern battery? Or will the garage have some sort of super charger to get it topped up. Don't really want to take it back overnight.

If I leave it and the ECO system continues not to work how much impact will it have on my petrol consumption? For a modern car a bit disappointed that I have to go to these lengths!

Any advice please.

Kind regards,

Dave

FrankBullitt United Kingdom

Thu Apr 26 2018, 01:20pm

Member No: #19238

Joined: Apr 12 2011
Location: Cambridgeshire

You can charge it yourself if you wish but yes the ‘eco’ seems to work less frequently than it works! Personally I wouldn’t worry about it.

gittos United Kingdom

Thu Apr 26 2018, 01:56pm

Member No: #30055

Joined: Apr 02 2013
Location: Bolton

I agree with FB'comments.

The stop start will not save you any significany amout of fuel as when it is working it will only be stopped for a few seconds most times at traffic lights and the amount of fuel your car uses at tickover is negligable. Also if you are doing mostly short journeys with lights, aircon, wipers etc on then the battery will not charge enough

There are a few things that detrmine how the Stop/Start works...Engine Temp, Battery codition ( needs to be above 70 per cent charge I think I have read) and electrical load.

dmpzsn United Kingdom

Fri Apr 27 2018, 12:53pm

Member No: #25128

Joined: Apr 09 2012
Location: Somerset

Hi Dave as others have said, it very rarely works on short runs, even after a long run 30 miles at m/w speed mine fails to work, then if and when it's only seconds so very little fuel saved.

chapi

Sat Apr 28 2018, 04:22am

Member No: #41501

Joined: Jul 29 2015
Location: East Anglia

Hi, I've just looked at mine as I was wondering about the same issue.

My car has done 5000 miles (4000 of them by someone else and the remaining 1000 by me at mostly motorway speeds) and according to the trip the Stop/start has never activated! Time shows 0000
The Green Icon flashes 3 times as indicated in the manual, but its never stopped.
Interestingly, my old C4 (64 reg Exclusive+) always stopped, unless it was very cold outside.

routemaster1 United Kingdom

Sat Apr 28 2018, 05:59am

Member No: #574

Joined: Jul 08 2007
Location: Dorset

chapi wrote ...

Hi, I've just looked at mine as I was wondering about the same issue.

My car has done 5000 miles (4000 of them by someone else and the remaining 1000 by me at mostly motorway speeds) and according to the trip the Stop/start has never activated! Time shows 0000
The Green Icon flashes 3 times as indicated in the manual, but its never stopped.
Interestingly, my old C4 (64 reg Exclusive+) always stopped, unless it was very cold outside.

If you are looking at the figure on the instantaneous fuel consumption, and I don't know where else you will see this, the time figure resets every time you restart the car!

chapi

Sun Apr 29 2018, 03:11am

Member No: #41501

Joined: Jul 29 2015
Location: East Anglia

Thanks routemaster, it just reads 00:00 all the time!!

YOG

Sun Apr 29 2018, 07:46am

Member No: #17929

Joined: Feb 08 2011
Location: West Sussex

It will read 00:00 all the time, if, as you say, "The Green Icon flashes 3 times as indicated in the manual, but its never stopped."


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