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How can I fix my Citroen C3 Remote Central Locking?

I've recently bought a 52 plate Citroen C3 1.4 and the remote central locking is dodgy to say the least. When you first approach the car, the remote will not open the car. The front driver's door needs to be opened with the key in the lock, the door opened and closed, and then the remote used to unlock all other doors! The remote then works for locking and unlocking the car unless you leave it for more than 20 minutes and it stops working again until you go through the same scenario with opening the front door.

Also, when the front door is opened, the CD player comes on - and will not go off again unless you physically turn it off by the audio system's power button, not so much a problem on long journeys but very irritating if you just go to the car to get something out - especially as if you forget, it will continue to play to itself when you've left the car for approximately 20 minutes!

Rai | Great Britain (UK) | January 2010

i have the same problem mate! couldn't believe it when a searched my problem in google and then read this to see its the exact same problem as me!

find any solutions?

crawford quinn | Great Britain (UK) | January 2010

Nope, not found anything yet - think the whole thing might need reprogrammed, but I've a friend who knows someone at a Citroen dealer so she's gonna try to find out for me - I'll come back on here if I find out n let ye know!

Rai | Great Britain (UK) | January 2010

Try this:
1. Sit in the car with ALL the accessories turned off (radio, lights etc.) Make sure the doors are shut.
2. Have all the remote keys with you, not on the same key ring. Turn on the ignition with the remote key and hold down the LOCK button on the remote for about 10 seconds. If you have more than one remote key, remove the one you have just done and insert the next one and turn the ignition on and do the same again, hold the lock button down for 10 seconds.
3. When you have done this to all the remotes, remove the key from the ignition and wait 1 minute. DO NOT switch anything on inside the car and DO NOT open any door, especially the drivers one.
4. After the minute is up, open and close the driver's door and try working the remote controls, they should all be now working. Any that aren't may be faulty or have a duff battery.

Alan | Great Britain (UK) | April 2010

Sadly I've tried that - and I've changed the batteries in both the keys then tried it again, nothing happens.
Something needs re-set somewhere but I'm just putting up with it for now as I've been informed that getting the central locking system re-done will cost too much for my liking.

Thanks though.

Rai | Great Britain (UK) | April 2010

Alan - I love you - this happened tonight to my Citroen C3 and your "fix" worked a treat. Have a virtual pint on me!!

Mel | Great Britain (UK) | April 2010

Mine's fixed now - went to the car the other day, and not a thing would work, got a new battery and while it was in the garage the fella changed two wires around and now the central locking works perfectly and the cd player no longer comes on when I open the door. However, the cd player doesn't come on when I start the engine either - have to turn it on myself and still need to turn it off myself or it keeps playing for 2 minutes after I leave the car, and if I do leave it, it then comes on as soon as I unlock the door with the remote!

Rai | Great Britain (UK) | April 2010

Ive just bought a berlingo multispace 2002. When i now lock the doors with the key,only the drivers door locks,any ideas please

John | Great Britain (UK) | November 2010

Many thanks to Alan | Great Britain (UK)

It worked on my car. You are supper AAAAAA...

Saeed | Great Britain (UK) | February 2011

my key fob wont work , have changed the batterey no joy, i can start the car ok
do i need a new fob help

dawn | United States | June 2011

Make sure that there is a brand new battery in the key fob and check that the fuse for the central locking has not blown . Get in the car with all the doors and boot closed. Turn on the ignition without starting the engine and with the ignition switched on hold down one of the buttons on the remote for about 10 seconds. Try the remote now from outside the car and if it still doesn't work then it becomes problematic and might need an auto electrician's expertise. It is quite tiresome having to lock and unlock the doors manually as these cars are designed to be used exclusivlely with the remote.

alan | United States | April 2012

how do i disconnect the central locking?

Lee | Germany | June 2012

same problem my key dosent work even with a new batery, cant get into my car using the fob the key dosent open the door it just turns round full curcal so has any one got a way i can get into my car

David Kemsley | Great Britain (UK) | January 2013

Thanks that tht worked for my son tonight. Another virtual pint to you x

Jane | Great Britain (UK) | March 2013

hi my cd player wont come on so was thinking of getting a new one. has anyone had a problem with 05 or newer? cause what im reading is making me not wanna get a new one lol thanks

james | Great Britain (UK) | March 2013

Can anyone help with this; C3 Plural 2003 the car is locked and won't open with key fob or open using key in the door. Gained access to batterywhich appears charged (according to mechanic). Any ideas how to get into a locked C3 please?

Jacqueline | Great Britain (UK) | August 2013

done all the above, even changed the central locking in all the doors and even changed the steering colome, at my wits now

robert herbert | United States | August 2013

Thanks Alan! Just got my key working again using your tip.

Alison from Birmingham | Great Britain (UK) | October 2014

Crush it..... or try this fix reset bsi unit
open drivers window and pop bonnet
ensure all doors are closed and remove keys fom ignition
wait 3 mins then disconnect battery and wait 15 seconds
reconnect battery and wait 10 seconds, don't open any doors
switch on side lights through the drivers window
switch on the ignition and hold the lock button down on the key fob for 10 seconds
remove key and open and close central locking system
start the engine to complete the test.

Good luck this test worked on my daughter's c3

sirstanley | United Kingdom | January 2015

I think because there seems to be many ways of getting the remote to work after changing battery and so many different problems appearing Citro├źn should do this FOR FREE.
They have made a simple fix far too complicated.
I'm just about to change the battery on my spare key for the first time and don't relish what faults my appear.
MY C3 03 PLATE 1.4 tdci drives well but my old fiesta
1996 was a doddle to fix. Went through 14 mot's too without any problems.May be I should buy a 2cv dolly !!

D Spragg | United Kingdom | April 2015

Only one set of my keys don't work on central locking after getting new battery, I have done the reprogramming bit as you've explained and it doesn't work, do I have to do it with the other set of keys even though they work fine??

Karen | United Kingdom | June 2015

As you can see I wrote to this site in April about problems C3 users were having with remote key issues.
Well guess what I bought a 57 plate 1.6hdi and the display is telling me the key fob battery needs changing.
Ok so I fit a new one, now I can't lock the car even after following instructions on re initialising the key worked fine before now it doesn't. !!!!!
No matter what I try the remote won't lock the car doors.
Why are things so complicated when it could be done simply.
Any suggestions folks.?.

D Spragg | United Kingdom | June 2015

Hi guys. I am locksmith for 10 years and had problem with next thing: citroen c3 ( some of them with flip remote-cr1620 batt ) , and peugeot 207 some of them with flip remote-cr1620 batt. Problem is always the same. When changing batt in key and made procedure for resynchronizing, remote works, BUT ONLY, near ignition. Same problem HUNDREDS of times. Using expensive bateries, cheap, no metter. Any idea or knowledge why?

zvone | Croatia (Hrvatska) | August 2015

Forgot to mention that it is always happen on flip keys where is battery separate from JCI pcb- meaning when you open flip, in this moment battery separate from pcb. Mikroswitches are ok ( no short circuit on them ), yellow capacitor always shows 2,7-2,8 volts afther connection of pcb and before pressing switch. Battery can be 3,2-3,3 volts but yellow capacitor is always 2,7-2,8 volts charged.

zvone | Croatia (Hrvatska) | August 2015

THis problem i solved but always works only 1-2 days. sometimes you put more capacity battery 1632( you must good pressure, cause this battery is bigger by meaning of heith. Second, if you make linear connections from 2 baterries 1616, you got 6 volts, and remotes work from 30-40 meters distance, but only for 2 days max. If you put 2 batteries 1616 paralel you will have more miliAmperas, but same voltage, meaning no work.

zvone | Croatia (Hrvatska) | August 2015

This problem is almost 10 years old, and afther thousands of researching on web, nobody wrote clear answer. Resynchronization on c3 and 207 works perfectly but remote works ONLY near ignition barrel or steering coloumn. I had even though that must be serial failure with their keys, or probably SECRET WAY OF RESYNCHRONIZATION. Saying again, hundreds of c3-s and 207-s, same problem.

zvone | Croatia (Hrvatska) | August 2015

and one answer finally :) everybody whos remote flips stops starting car( antytheaft ) means that is coil on the top of pcb broken, this is thick isolated wire, you will not even see that is broken- ofc you can see trough big glass magnifier. It always broke on one of 2 sides of coil. Desolder this coil and buy new- must be from 23-28 ohms !!!!! Solder new and drive :)

zvone | Croatia (Hrvatska) | August 2015

My question probably solved, i managed to get 3,1 volts to capacitor, waiting for car thursday morning.

zvone | Croatia (Hrvatska) | August 2015

car was here. no chance. working only near steering coluomn. i did soft reboot 2 times. same thing, didnot work from distance more then 15 cms from steering . Anyone got idea??

zvone | Croatia (Hrvatska) | August 2015

citroen c3 changed battery in both keys my central locking still wont work if I try locking from inside it locks car but the red light is not on inside the car that flashes

tom bell | United Kingdom | November 2015

also its not the fuse I have checked them

tom bell | United Kingdom | November 2015

Alan thank you!!!!

Stefke | Republic of Serbia | February 2016

My one no fix

slav | United Kingdom | April 2016

I suggest a can of petrol and a lighter! Nothing worked for me, I lean in extract ign key, lock using the dash button then buzz the window up..make sure you get your head out quick.

mike lawrence | Spain | May 2016

Have you solved?
I have same problem... Low range...

Marco cidue | Italy | June 2016

I have solved remake the solders on the k110 chip.
Now work fine !!!
;) ;) ;) ;)

marco cidue | Italy | June 2016

I have the same problem with my 58 reg C3. New batteries, sitting time after time with key in fob trying the reset fix, disconnected battery twice, still knackered. I brought a length of plastic electrical lead pipe (I got black) from Wickes for 95p. To lock the car I open the boot, lean in and using the length of plastic pipe (cut to the right length) I push the button on the dash, shut the boot, the car is locked (keys must be in you hand other wise you are locked out). To unlock, use key on drivers door, open it and all the locks open Simples. I have seen tow other C3s with length of plastic pipe in the back.

DenReider | United Kingdom | November 2016

I couldn't fix the central locking on my c3 so I used a modified version of DENREIDERS idea, instead of using a pipe I cut the cradle off a selfie stick and added another piece of stick as it wasn't long enough !!! Secured the two together and hey presto !! I can lock my c3 and the stick retracts small enough to fit in the boot out of the way !! GOOD LUCK FOLKS

martin in scotland | United Kingdom | February 2017

I've now got the same problem with my 2008 C3. My key fob stopped working properly, so i changed the battery. It still wouldn't work, so i bought another new battery and i've done the holding down the lock button for ten seconds trick. Oh and my spare key doesn't work properly either.

My key fob actually does lock and unlock the doors, but only from inside the car when my key is very close to the ignition. If the range was that little bit more, so that i could lock the car from outside then i'd be happy. At the moment i'm having to open the window, lock the doors and then get the top half of my body out of the car before the window closes. I look nuts doing that every time i want to lock the car door.

Why did citroen make a car that only locks the drivers door with the key manually and not have any other way of locking the car ?

BTW it's now June 2017 and people have been asking the same question for years.

Graham Thornton | United Kingdom | June 2017

I got problem with the doors on my C3 pluriel convertible , unable to open only got access to boot. Any suggestions?

Chantelle | United Kingdom | June 2017

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