Remote central locking working intermittently

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mathemagic
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Remote central locking working intermittently

Post by mathemagic »

Hi all,

I have a strange problem that doesn't seem to be covered elsewhere.

Xsara Picasso 57 plate 1.6HDi

Using my keyfob (with recent new battery), I can sometimes open and close the doors remotely and sometimes not. I've started to notie it often doesn't work first thing but then works later, perhaps when the car has warmed up in the sun!

Assuming the keyfob works, where can I find the receiver unit to check that I haven't got a slightly dodgy connection?

Anyone else had a similar problem?

Any help gratefully appreciated.

Thanks,

Tony
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Hell Razor5543
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x 2993

Re: Remote central locking working intermittently

Post by Hell Razor5543 »

I did have a similar issue with a 54 Picasso, and it was down to the crystal in the keyfob. The problem was getting hold of a replacement crystal of the right size and frequency. IIRC it was something like these;

http://www.ebay.co.uk/itm/Pack-of-10-Se ... 232734a776" onclick="window.open(this.href);return false;

but you have to be good with a soldering iron to replace it, as it is surface mounted.
James
ex BX 1.9
ex Xantia 2.0HDi SX
ex Xantia 2.0HDi LX
Ex C5 2.0HDi VTR
Ex C5 2.0HDi VTR

C5 2.2HDi VTX+
Yes, I am paranoid, but am I paranoid ENOUGH?
Out amongst the stars, looking for a world of my own!
mathemagic
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Joined: 07 May 2013, 17:09
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Re: Remote central locking working intermittently

Post by mathemagic »

Many thanks for the quick reply. I'll investigate and decide if I have the dexterity to try it!
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Hell Razor5543
Donor 2023
Posts: 13727
Joined: 01 Apr 2012, 09:47
Location: Reading
My Cars: C5 Mk2 VTX+ estate.
x 2993

Re: Remote central locking working intermittently

Post by Hell Razor5543 »

The biggest problem you have is that it is an intermittent fault (and EVERY engineer of any type hates those!). Just because my problem was due to the crystal does not guarantee that you have the same fault. If you have a second key, I would check to see if it works reliably.

Before you get those crystals, make sure they are the right ones. I am going from memory, and it was several years ago.
James
ex BX 1.9
ex Xantia 2.0HDi SX
ex Xantia 2.0HDi LX
Ex C5 2.0HDi VTR
Ex C5 2.0HDi VTR

C5 2.2HDi VTX+
Yes, I am paranoid, but am I paranoid ENOUGH?
Out amongst the stars, looking for a world of my own!
davegtr
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Re: Remote central locking working intermittently

Post by davegtr »

i had the same problem with my remote on my C8, all i did to cure it was do a full bsi reset, info below, hope it fix's issue for you.

Put the driver's window down, lift the bonnet and ensure all equipment is switched off.
Ensure all doors are closed and remove key from the ignition.
Wait for 3 minutes, disconnect the vehicle battery and wait 15 seconds.
Reconnect the vehicle battery, wait a further 10 seconds (do not open doors.).
Switch on the side lights through the driver's window.
Switch on the ignition and check system's functionality.
Hold lock button on key down for 10 seconds.
Remove key open & close door test central locking system.
Start the engine and complete the system's check.
mathemagic
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Re: Remote central locking working intermittently

Post by mathemagic »

Many thanks for the replies once again.

Since the replies I took the key apart and noticed that it seemed that sometimes when I pressed a button the mechanism may have been moving away from the button inside the fob.

Since playing around with how it was seated, the fob has worked almost all the time. I'll keep this page bookmarked in case the problem returns and try your suggestions then.

Many thanks once again.
citronut
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Re: Remote central locking working intermittently

Post by citronut »

i would check firstly the connection of the fob/plip battery, then the PCB for bad solder joints, before replacing anything
Regards, malcolm.

current ride a BX 1.7 TZD estate
1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable )
layed up roppy 1.9TD XANT estate, now gone to meet her maker
purple and lilac metalic 2CV(VIOLET)registered to her in doors
1972 DS special been layed up aprox 31 years
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