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C4GP ambience interior lights	Please Register to enjoy additional Member Benefits

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MIM

Sat Oct 29 2011, 05:38am

Member No: #3298

Joined: Apr 15 2008
Location: Shoreham-by-Sea, England

I have a 2008 C4GP Exclusive with the orange glowing interior 'ambience' lights, controlled by a switch beneath the dashboard.

For 3.5 years they have been working fine but just recently they stopped working. When I switch on the headlights, the interior ambience lights do not work. I've tried pressing the control switch on each side but they don't come on - but the little switch itself glows a lovely orange as before!

What's bizarre is that when I switch off the engine and all the interior courtesy lights come on automatically, then the orange ambience lights come on along with all the other interior lights, just as they are supposed to!!

Anyone have any ideas what could be wrong and how I could fix it?

Thanks

trev h United Kingdom

Sat Oct 29 2011, 06:37am

Member No: #10864

Joined: Sep 11 2009
Location: kent/se london

Looking in the handbook it says that using the little orange switch you can, activate/deactivate the lighting - select the lighting intensity, just been & checked mine & they are on all the time, cant adjust the intensity or switch them on or off, also there is a spot around the passenger glovebox where there is no light at all, (not really worried as i think they are a gimmick anyway) Iv'e looked in the car setup & cant see anywhere to change the configuration, so all i can think of is a dirty switch, might be worth giving it a spray of switch cleaner, as for mine it will stay as it is.

UPDATE

It helps if you RTFI. Looking at the handbook it says the ambiance lighting is part of the courtesy lighting, so back out to the car & switching the courtesy light off/on the mood lighting was working again, allthough there wasn't a specific setting that it worked in, just played around opening & closing the door till courtesy light went off, or switching the roof switch off/on.

Might be worth giving that a play with first.

MIM

Mon Oct 31 2011, 08:28am

Member No: #3298

Joined: Apr 15 2008
Location: Shoreham-by-Sea, England

Thanks Trev h
I have looked in the handbook several times and also tried your suggestion about playing around with the courtesy light switch in the roof and opening the doors, but it still doesn't work.

I'm not sure if the ambience lighting is part of the courtesy lighting, because when I open the doors the ambience works fine for a few seconds until it goes off when all the courtesy lights go off. Also it has a separate heading in the handbook.

The issue is that the ambience lighting won't come on when I switch on the exterior lights, or when the sensor in the car detects the outside is dark, as it used to.

So perhaps it's the switch, I haven't tried your suggestion of switch cleaner yet, what is that? Do you mean WD40 or something specific?

Dave_Retired. United Kingdom

Mon Oct 31 2011, 08:41am

Member No: #1

Joined: Aug 07 2006
Location: Northumberland

MIM wrote ...

So perhaps it's the switch, I haven't tried your suggestion of switch cleaner yet, what is that? Do you mean WD40 or something specific?

Electrical switch cleaner, not WD40

MIM

Sun Nov 13 2011, 10:46am

Member No: #3298

Joined: Apr 15 2008
Location: Shoreham-by-Sea, England

Thanks C6Dave, I tried electrical switch cleaner but it didn't help.

I looked at the downloadable document archive to see if I could find anything on this. There are a couple of documents called "C4 Picasso interior lighting - operating guide & operating principles" which tell you how the interior lighting is supposed to work but I couldn't find anything specific about the wiring or how the switch works. Is there anything I'm missing?

I decided to dig around and see if I could identify the problem. I prised the whole orange switch unit out of the dash, and then prised it open. One part is the orange plastic cover, the other is a small circuit board attached to a housing where the wires come in. I sprayed the switch cleaner all around but still no result.

The switch unit has a number on it: 96 629 210 XT 53269792 103d 040308 and there are 4 wires coming from inside the dash which plug into it: a yellow; a green/yellow; a red; and a white.

Anyone have any ideas I would be able to somehow replace this switch for a new one? Do these 4 wires coming from inside the dash pull out of the switch? I wasn't sure and tried prising them out, they seemed to be in connector of a rubbery material whereas the switch mechanism is a harder plastic. But I was scared of breaking anything so I stopped when they didn't come out easily.

MIM

Sun Nov 27 2011, 02:54pm

Member No: #3298

Joined: Apr 15 2008
Location: Shoreham-by-Sea, England

Hi

Anyone have any ideas on this yet?

What could be causing the problem?

Should I get a new switch?

Thanks

JohnC4GP United Kingdom

Mon Nov 28 2011, 04:53am

Member No: #15026

Joined: Aug 12 2010
Location: Bedfordshire

Next Step would probably be to try another switch. They are only £35 from the dealer.

trugup United Kingdom

Tue May 21 2013, 04:22pm

Member No: #30493

Joined: Apr 29 2013
Location: west midlands

im having exactly the same symptoms as your self have taken it back to the local citroen dealer (who doesn't fill me with any confidence) who could, nt sought it out, they said they have been in touch with citroen technical, and their answer was its been deleted from the software to save on battery life, sounds like a put off to me, am still trying to get specific drawings to this particular circuitry but to no avail, its not your switch mine tests ok.

I wander if we have had a software update at some time which didnt include the ambience correctly i will let you know if i have any sucess

MIM

Wed May 22 2013, 02:55pm

Member No: #3298

Joined: Apr 15 2008
Location: Shoreham-by-Sea, England

Thanks trugup, looking forward to hearing how you get on.

fornal123 Poland

Tue Mar 04 2014, 07:27am

Member No: #34556

Joined: Mar 04 2014
Location: Poland

Hi Guys,
I am first time on this web page... Really nice page. I have found it when I was looking for how to solve a problem with ambient light in interior of my c4 picasso 2008. I have read above and my problem seems to be the same as MIM posted. Generalny there is a problem to find more information which concern this issue, there is not to much cars with this equipment. There is nothing interesting in polish forums therefore I am here.
Somebody mentioned above that it could be a reason of bad condition of battery... Have anybody found more news in this matter? I will be gratefull for any advise... Regards.

looxuser United Kingdom

Tue Dec 05 2017, 05:21pm

Member No: #30245

Joined: Apr 13 2013
Location: poulton le fylde

can anyone confirm or otherwise that the ambient lights remain on at night in their c4 picasso please?

moleman United Kingdom

Wed Dec 06 2017, 09:25am

Member No: #16299

Joined: Nov 09 2010
Location: Essex

looxuser wrote ...

can anyone confirm or otherwise that the ambient lights remain on at night in their c4 picasso please?

Do you mean when you are driving? Then Yes mine stay on.

looxuser United Kingdom

Wed Dec 06 2017, 05:32pm

Member No: #30245

Joined: Apr 13 2013
Location: poulton le fylde

Mine don't for some reason the used too but no longer, I replaced the "light pack" module and used lexia but could not find anything in Lexia to enable them, perhaps i wasn't looking in the right place.


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