Intermittent roof opening problem

If you need help with your C3 Pluriel, that seems specific to the Pluriel (like the roof), ask here. Engine and Transmission problem must be asked in the relevant topic for the problem. The Pluriel shares the same Engine, Gearbox, Brakes and Transmission as the other C3 models (see above for the correct section).
Forum rules
Questions about the Pluriel Roof system can be asked here
No engine, gearbox or running gear questions
Think: Pluriel roof and rear window jobs
Did you know the Pluriel shares the engines, gearboxes, electrical, audio system, suspension, steering and running gear with the early C3?
My Name: doitall56

Member
Posts: 2
Joined: Wed Apr 24, 2019 10:10 am
Model: C3 2002-2005, Original shape model
Year: 2005 (55)
Engine Size: 1.6 i
Fuel Type: Petrol
Mileage: 120000
Trim Level: VTR+
Gearbox: SensoDrive
DPF: No
LHD or RHD: LHD (Europe)

Post

Hi all
Glad I found this forum as it's been really useful so far.
Guess what, I've got a roof problem.
I've tested the motor independently which works fine.
The actuators which release hatch and rear window tested independently, all fine.

Problems
1 Roof sometimes opens to first position and has to be spoken to nicely for it to close again.
2 Rear hatch and door don't function with the buttons. I know they're linked with the roof.

Question
1 Could it be the roof switch malfunctioning?
2 Could it be the BSI? All connections solid, fuse good.

Done all the reset solutions. No joy there either.

Can open the roof manually no problem and it opens perfectly with an independent power source.

I'm in France and there are a lot of videos from french people about this, which i'll translate and post up if I find anything useful.

I know this is a common problem but if anyone can shed any more light on this i'd really appreciate it.

Thanks in advance.
My Name: Citroen-Driver

C3 Master
Posts: 212
Joined: Mon Dec 18, 2017 12:10 am
Model: C3 Pluriel - with or without roof
Year: 2003 (53)
Engine Size: 1.6 (16v)
Fuel Type: Petrol
Mileage: 30000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: ET3 16-valve (90 PS)
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doitall56 wrote: Wed Apr 24, 2019 2:13 pm Question
1 Could it be the roof switch malfunctioning?
2 Could it be the BSI? All connections solid, fuse good.
There is also a roof ECU, than takes those roof signals in for processing.

It can be more simple to replace the Pluriel roof switch (here) with a known working one than to try to test and intermittent fault on one.

If you suspect BSI/Roof ECU, then you will need Lexia/diagbox installed.

Intermittent could be a connector fault or a damaged loom, both time consuming to diagnose.
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