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dt4
Monza


Joined: 16 Mar 2016
Posts: 214
Location: Leeds


PostPosted: Sun Dec 29, 2019 7:40 pm    Post subject: Another key fob question Reply with quote

My key fob stopped operating the central remote locking so I replaced the battery and all was well but only for a couple of weeks when it stopped working again.
Another battery swap and it was fine again for a couple of weeks then I noticed it to take an increasing number of presses and then it stopped again

Thoughts, is it possible that the battery is draining due to a fault or is the fob buggered?
fixable or replacement fob?
my spare fob has no internals (never has had in my ownership) so I dont have a fall back

thanks
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1999 996 3.4 C4
1975 914 1.8
2000 986 2.7
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7825
Location: Brighton


PostPosted: Sun Dec 29, 2019 7:51 pm    Post subject: Reply with quote

There is probably a fault with the fob itself which is draining the battery .. There is no fix im aware of and a new fob ain't cheap .. sorry .
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My Daughter's Crowdfunding has hit the target .

Thank you all so Very much .

She's not going until july 2020 though .



Mechanic

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Indy Mechanic .
 
  
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dt4
Monza


Joined: 16 Mar 2016
Posts: 214
Location: Leeds


PostPosted: Sun Dec 29, 2019 8:37 pm    Post subject: Reply with quote

Thanks deMort, it saves me from chasing a fix that isnt going to work
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1999 996 3.4 C4
1975 914 1.8
2000 986 2.7
 
  
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dt4
Monza


Joined: 16 Mar 2016
Posts: 214
Location: Leeds


PostPosted: Mon Dec 30, 2019 11:29 am    Post subject: Reply with quote

I opened the spare fob that has no internals and noticed it had the transponder but not the circuit board, I swapped the circuit board over from the non working fob to the "empty" fob and that is now operating the remote locking. It suggests the transponder to be the faulty part, is this still a dealer job for a new fob?

cheers
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1999 996 3.4 C4
1975 914 1.8
2000 986 2.7
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7825
Location: Brighton


PostPosted: Mon Dec 30, 2019 6:04 pm    Post subject: Reply with quote

That's a little strange as the transponder is not connected electrically to the fob .. its a glass pil .

I think i would try it for a week or two to see if it continues working .. my hunch is a lose contact somewhere and by moving it you have cured it .

A new fob can be coded on by OPC or Indy but the main cost is the actual fob itself .. labour is usually 0.5 hr to have it coded on.
_________________
.
My Daughter's Crowdfunding has hit the target .

Thank you all so Very much .

She's not going until july 2020 though .



Mechanic

7pm - 9pm

Indy Mechanic .
 
  
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dt4
Monza


Joined: 16 Mar 2016
Posts: 214
Location: Leeds


PostPosted: Mon Dec 30, 2019 9:06 pm    Post subject: Reply with quote

false alarm deMort, it worked for a while and has now packed up so I figure it must be the circuit board in some way
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1999 996 3.4 C4
1975 914 1.8
2000 986 2.7
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7825
Location: Brighton


PostPosted: Mon Dec 30, 2019 9:58 pm    Post subject: Reply with quote

Ok fair enough .. perhaps .. a magnifying glass and have a look at the fob circuit board .. it might be a dry solder joint that resoldering might cure .

just look for solder with a pin in the center that seems separate from the solder around it .. this is a dry joint .. pin has broken away from the solder joint basically .
It's worth a good look as a new fob is over £200 .
_________________
.
My Daughter's Crowdfunding has hit the target .

Thank you all so Very much .

She's not going until july 2020 though .



Mechanic

7pm - 9pm

Indy Mechanic .
 
  
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Griffter
Nürburgring


Joined: 22 May 2016
Posts: 385



PostPosted: Tue Dec 31, 2019 8:33 am    Post subject: Reply with quote

I may be getting confused with a different car, but I thought the buttons can go dicky on these sometimes, and can be replaced by careful soldering? Sounds a possibility in this case?
 
  
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dt4
Monza


Joined: 16 Mar 2016
Posts: 214
Location: Leeds


PostPosted: Tue Dec 31, 2019 3:40 pm    Post subject: Reply with quote

deMort wrote:
Ok fair enough .. perhaps .. a magnifying glass and have a look at the fob circuit board .. it might be a dry solder joint that resoldering might cure .

just look for solder with a pin in the center that seems separate from the solder around it .. this is a dry joint .. pin has broken away from the solder joint basically .
It's worth a good look as a new fob is over £200 .

definately worth a look
cheers
_________________
1999 996 3.4 C4
1975 914 1.8
2000 986 2.7
 
  
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dt4
Monza


Joined: 16 Mar 2016
Posts: 214
Location: Leeds


PostPosted: Tue Dec 31, 2019 3:42 pm    Post subject: Reply with quote

Griffter wrote:
I may be getting confused with a different car, but I thought the buttons can go dicky on these sometimes, and can be replaced by careful soldering? Sounds a possibility in this case?

it can happen, I have replaced a few of the "micro switches" on various fobs over the years, not this time though. The red led flashes on every press but it seems no signal is being sent
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1975 914 1.8
2000 986 2.7
 
  
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ShornW
Newbie


Joined: 24 Feb 2015
Posts: 33



PostPosted: Wed Jan 08, 2020 5:11 pm    Post subject: Reply with quote

I haven't used these people but a friend of mine has. He posted his key on Thursday and it arrived repaired on Saturday.

I spoke to them and they said I should try re-synching my key before sending it to them so they aren't rip off merchants. May be worth a £35 punt

https://www.keyfobrepair.co.uk/car-key-remote-fob-repairs/by-brand-porsche
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996.1 Carrera 2 convertible
 
  
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