Central locking not working after installing stereo:

Audio, ICE, Speakers, Head Unit, CD, CD Multi changer. If you have a question about any Citroen C3 related Audio, then this is the place.

Please indicate if there is a Citroen CD multi-changer, drawer or cubby under the CD/Radio, if there is the Navigation unit, CD or Radio options.
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Only post questions about AUDIO equipment in this topic please. In car entertainment, ICE, Android Auto, stereo and sat-nav are all welcome here
My Name: Mandles

Member
Posts: 1
Joined: Tue Aug 29, 2017 5:19 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 80000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: Yes
LHD or RHD: RHD (UK)

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Hi all,
Hope someone can help.
I am locked out of my citron C3, after installing a new stereo a couple of days ago. Was able to lock car after but unable to unlock ever since. Guessing stereo is wired differently despite fitting perfectly with car sockets. It had power even with ignition off. Managed to get bonnet open, Recharged battery & even use jump leads but neither of my two keys will work. Manual key hole has never worked. Guessing battery drained due to new stereo & somehow reset key fob or has gone into sleep mode? Either way, I can't get into the car to reset key fobs & sort out stereo wiring. Am I screwed?
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My Name: C3driver52

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Posts: 1854
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)
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Mandles wrote:I am locked out of my citron C3, after installing a new stereo a couple of days ago. Was able to lock car after but unable to unlock ever since.
You installed the radio incorrectly :cry:

power pins 4 and 7 are transposed on the C3 and don't follow the ISO plug standard.
Mandles wrote:Managed to get bonnet open,
Good start :)
Mandles wrote:Manual key hole has never worked..... I can't get into the car to reset key fobs & sort out stereo wiring. Am I screwed?
Pretty much, yes. You will have to break a window or bend the door frame back and slip someone small in there. The procedure to reset the keys is unlock manually and insert key in the ignition. You can then follow the C3 key re-sync procedure (here). But if your manual unlock doesn't work, how do you open the door?
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