Bonnet Open Warning

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My Name: The Badger

Member
Posts: 3
Joined: Mon Mar 05, 2012 12:57 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Fuel Type: Petrol
Mileage: 80000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Location: Essex

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I have a 02 1.6 16v Exclusive C3 and I recienlty have changed the battery and also the heater resistor. When I had changed the resistor after having taken the blower motor out to find it, the bonnet open warning stays on even after I have made sure it is shut. I cannot find any mention of a sensor in the haynes manual or on the service citroen site.

When I changed the battery I left the bonnet open for 30 mins to let the bsi shut down. When I connected the battery I left it for 2 mins and then I opened a door, I then left the ignition on for 2 mins and then I started the car. I change the battery tuesday last week and the resistor on saturday and it seems that the fault has started since saturday.
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My Name: C3driver52

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Posts: 1943
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 116 times
Been thanked: 68 times

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Hello The Badger,

I cannot find any mention of a sensor in the haynes manual or on the service citroen site.
Here is a picture of the electrical connection to the bonnet open sensor on a 2002 Citroen C3.

Its not very clear, and well greased, but I think you will find it from the photo.
C3 Bonnet open sensor and bonnet latch release cable
C3 Bonnet open sensor and bonnet latch release cable
My Name: calinutz

Member
Posts: 2
Joined: Wed May 28, 2014 8:47 pm
Model: C3 Pluriel - with or without roof
Year: 2004 (04)
Engine Size: 1.6 (16v)
Fuel Type: Petrol
Mileage: 80000
Trim Level: VTR+
Gearbox: SensoDrive
DPF: No

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Hi,

Have you got any ideea how to get the sensor out ? It doesn't have a connector, the wires go straight into the switch.

Thanks.
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My Name: C3driver52

Guru
Posts: 1943
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 116 times
Been thanked: 68 times

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calinutz wrote:Hi,

Have you got any ideea how to get the sensor out ? It doesn't have a connector, the wires go straight into the switch.

Thanks.
I have never had to remove the sensor, but if you remove the whole catch assembly it may become evident.

This is the catch assembly, missing the sensor, removed from the car
bonnet release catch citroen c3
bonnet release catch citroen c3
Which may help?
My Name: Missing Lincs

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Posts: 844
Joined: Mon Mar 05, 2012 9:29 pm
Model: C3 2002-2005, Original shape model
Year: 2004 (04)
Engine Size: 1.1
Fuel Type: Petrol
Trim Level: Desire
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Location: United Kingdom
Has thanked: 46 times
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Post

The switch has a little press release on it, it then slides off.

Before removing it, I'd try giving the lock a good clean, perhaps electrical contact cleaner and then re-lubricate. I'm wandering if the work done under the bonnet has just exercised the mechanism which is perhaps a little dried out, mechanically speaking?
If at first you don't succeed, destroy all the evidence and pretend you never tried :lol:
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