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C4 - DS4 Owners :: Forums :: Citroen C4 Picasso and Grand C4 Picasso (B78) 2013 onward :: C4 Picasso and Grand C4 Picasso (B78) Problems and Issues

Cruise control acceleration problem

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Author Post
paulhampson   
Mon Jan 15 2018, 03:17am
Member No: #50261
Joined: Jan 15 2018
Location: Belgium
I have a problem which I have only just noticed.

When using cruise control when I use the plus button to set a speed of 10kmh faster (using the long press of the + i.e 5kmh at a time) the car will tart accelerating rapidly and then stop accelerating and cruise control will be paused.

There are no problem with the car accelerating nor is there a problem if I use the + button with short presses (i.e. 1kmh increase at a time).

Is this a safety feature or is there a problem I should get looked at?
FrankBullitt   
Mon Jan 15 2018, 04:47am

Member No: #19238
Joined: Apr 12 2011
Location: Cambridgeshire
Our DS4 2.0HDi has a similar issue which Citroën could solve - basically if the car accelerated hard on cruise control it would ‘drop’ the cruise; you should notice it also happens when you have it set to a speed then give it maximum acceleration; cruise should stay ‘active’ but ours invariably dropped out but would set again without issue.
paulhampson   
Tue Jan 16 2018, 01:21am
Member No: #50261
Joined: Jan 15 2018
Location: Belgium
Hi Frank
Do you still have it or has citroen resolved it?

Thanks
CitroenNoticer   
Tue Apr 30 2019, 01:28am
Member No: #41033
Joined: Jun 21 2015
Location: Lymm
Did anyone solve this? I have the same problem on my exclusive+ with adaptive cruise.
FrankBullitt   
Tue Apr 30 2019, 11:24am

Member No: #19238
Joined: Apr 12 2011
Location: Cambridgeshire
paulhampson wrote ...

Hi Frank
Do you still have it or has citroen resolved it?

Thanks


Oops, I know it’s a bit late but just to close this no they didn’t fix it - I just got used to it, most of the time it wasn’t really an issue except when going up a hill towing the caravan at about 50 in 4th and it ‘dropped’ out with the an almighty shunt of the drivetrain. Oh how we laughed and how I miss that car (not) - wish we had just kept the 1.6HDi and accepted it would be a slower tow car...
theeblaster   
Wed Oct 23 2019, 08:57am
Member No: #54884
Joined: Oct 23 2019
Location: wakefield
paulhampson
my c4 Picasso exclusive+ 2013 model has developed this problem,
if I incrementally increase by 1mph at a time, there are no issues but long press and say 5mph then the revs go up and then it knocks the cruise control off whilst accelerating up, however if i do this using accelerator pedal then it's fine,
I too would love to know the answer to this.
CitroenNoticer   
Sat Jan 18 2020, 12:07pm
Member No: #41033
Joined: Jun 21 2015
Location: Lymm
I had a software update installed when the car went into the dealer and it either cured it or it went away by itself. That was 9 months ago and the problem hasn't returned.
 

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