Door locks screeching sound

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My Name: ParvH

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Posts: 1
Joined: Mon Jul 30, 2012 9:42 pm

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Hi there. Can someone please help! I have a C3 and when I lock the doors remotely the 2 back locks make massive screeching sound. All the doors lock ok. Also noticed that I am unable to open back doors from inside. Tried playing with child lock on and off and does not make a difference. Any ideas where I should start first?
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My Name: C3driver52

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Posts: 1943
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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)
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It sounds like a wiring problem or a problem with the child lock relay,

I don't have a solution, but there is lots of information in this post about the child lock relay and being unable to open the rear doors from inside:

https://citroenc3owners.com/citroen-c3-q ... 3-t76.html
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