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Old 05-02-18, 11:07 AM   #1
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Default 207 SW estate key fob playing up

Hi, I wonder if anyone could help me please. I purchsed a Peugeot 207 SW S 08 recently bought and after a day or two the key fob door locking and glass boot suddenly started to work then not work. I only have the one key fob and the door locks and unlocks fine with the key. It looks like someone has put a new case on the key fob so I replaced the battery and checked the buttons and solder with my mag headset and all seem OK.

I also made sure the cheap new casing is clicking the buttons as sometimes these cheap chinese cases are utter garb but its working fine.

Just to say, I am fine with very fine soldering and button replacements but this has caught me out as all 3 buttons can work then suddenly stop.

I gave the board of the fob a gentle clean as well with some contact spray as this can release sticky buttons but no joy.

The car has had a new fusebox installed by a reputable company at a cost of 465 a few month back so I am beginning to wonder if it's anything to do with that or the fob itself.

Anyone else had a key fob that sometimes will, sometimes wont ?


Oh and one last thing, if you put your ear to the fob you can hear a slight squeal type noise coming from the fob.

Any help/advise would be greatly appreciated
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Old 05-02-18, 01:26 PM   #2
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This is common and it's normally the battery contacts that don't line up
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Old 05-02-18, 02:06 PM   #3
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Quote:
Originally Posted by trustme View Post
This is common and it's normally the battery contacts that don't line up
Thanks , I bent them and a small manicure file to the copper contacts then I reflowed with a fine soldering iron most of the legs on the mobo and it's working fine. It was either what "trustme" said or a dry joint but a result either way

thankyou
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Old 05-02-18, 04:00 PM   #4
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we have the same, sometimes the fob works other times it will only work if held next to the ignition barrel, am still waiting to see if anyone comes up with a fix.

i have a old battery radio and it picks up the signals from fobs accross most the fm band, can get a nice double pulse from the peugeot fob from 2m away so guess the fobs fine.
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Old 05-02-18, 05:01 PM   #5
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It sounds like the receiver mounted to the key barrel is the problem. Could be a poor connector.
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Old 07-02-18, 08:35 AM   #6
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Well I thought I had it sorted but oh no I'm not that lucky. It worked fine for a short while then it's back to working randomly. One minute it will lock perfect but the fob wont unlock the car then like magic it will lock/unlock OK. One thing I did notice was the glass window for the boot (middle button on remote) seems to work the vast majority of the time regardless of the lock/unlocking so this is leading me to think the problem might not just be with the fob but with the central locking itself.

What really annoying is, in the time it took me to write the reply I nipped back out and the fob worked perfect without a hitch. There's nothing worse than when you just can't put your finger on it. If somethings broke then you can normally buy the part/s and replace but with this....?

Could it be anything with the sensor in the car ? would this help if I did it ?

Procedure for Initialising the BSI after key learning
1. Disconnect the diagnostic tool.
2. Put the driver’s window down, lift the bonnet and ensure all
equipment is switched off.
3. Ensure all doors are closed and remove key from the
ignition.
4. Wait for 3 minutes, disconnect the vehicle battery and wait
15 seconds.
5. Reconnect the vehicle battery, wait a further 10 seconds (do
not open doors.)
6. Switch on the side lights through the driver's window.
7. Switch on the ignition and check system’s functionality.
8. Hold lock button on key down for 10 seconds.
9.remove key open & close door test central locking system
10. Start the engine and complete the system’s check.
Failure to follow this procedure could result in incorrect operation of many
BSI related items.
It did take three attempts following this procedure before it worked.

Last edited by maxtor154; 07-02-18 at 09:06 AM.
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Old 07-02-18, 10:11 AM   #7
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did you replace the battery in the fob, also when you reflowed the solder did you use any flux if not then you may have a dry joint, you can use plumbers flux but make sure you clean it off with some solvent after as it can cause problems
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Old 07-02-18, 11:03 AM   #8
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Does the interior central locking button (padlock symbol) work reliably? If not, you probably have a defect in the CL system. If yes, it is probably what I said above, the receiver.
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Old 07-02-18, 11:40 AM   #9
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the receiver for the central locking is in the comms unit and not as said about as that is the immobiliser receiver
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Last edited by trustme; 07-02-18 at 12:32 PM.
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Old 07-02-18, 12:21 PM   #10
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Thanks - you learn something every day
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