Key Fob battery/reprogramming
#1
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Thread Starter
Key Fob battery/reprogramming
Recently the battery in my key fob died. No biggie, I bought another and replaced it. The strange thing is that it still doesn't work (now it lights up at least). I feel like I've changed this battery before without having to reprogram the key. Is it typical to have to pay for reprogramming when you replace the battery?
-Shawn
-Shawn
#2
Not 100% but I don't think that there is any programming. I thought I read somewhere that there is a small micro chip (that looks like a small tube Fuse) inside the key
Maybe you dropped that chip when you opened your key to replace the battery?
Maybe you dropped that chip when you opened your key to replace the battery?
#3
Drifting
What do you mean by "it still doesn't work", can't remotely unlock and lock the doors or can't start the engine?
If it's the former then something has gone wrong with the circuitry, you may then need to purchase a new key fob to be programmed to the car, if it's the latter, perhaps the RFID chip inside the keyfob fell out, again you would need to buy a new fob head to be programmed to the car as my understanding is that the information from the tag for the key fob is programmed to the electronic box (not sure the correct name, yet) in the car.
Good luck.
If it's the former then something has gone wrong with the circuitry, you may then need to purchase a new key fob to be programmed to the car, if it's the latter, perhaps the RFID chip inside the keyfob fell out, again you would need to buy a new fob head to be programmed to the car as my understanding is that the information from the tag for the key fob is programmed to the electronic box (not sure the correct name, yet) in the car.
Good luck.
#4
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Thread Starter
Everything works fine with starting and driving the car, but the doors will not lock or unlock remotely. The RFID module is still in place inside the key.
-Shawn
-Shawn
#7
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Try the reset procedure. Remove the new battery, then reinstall it upside down (reversed polarity) for about 10 seconds, remove the battery and reinstall it the correct way.
Sometimes this works. It is worth a try.
Sometimes this works. It is worth a try.
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#8
Drifting
That is unless Porsche has officially endorsed this "reset procedure" somewhere in their documentation, I couldn't say since I'm still waiting for my owner's manual that I ordered 2 weeks ago with no ETA specified......
#9
I'd be hesitant to do this, although Porsche likely has a diode in the ciructry for reverse polarity protection, it's never advisable to intentionally apply reverse voltage to an electronic circuit.
That is unless Porsche has officially endorsed this "reset procedure" somewhere in their documentation, I couldn't say since I'm still waiting for my owner's manual that I ordered 2 weeks ago with no ETA specified......
That is unless Porsche has officially endorsed this "reset procedure" somewhere in their documentation, I couldn't say since I'm still waiting for my owner's manual that I ordered 2 weeks ago with no ETA specified......
#13
Rennlist Member
The dealer will not be able to reprogram the key to the car without the key barcode.
Also if you have any other working keys bring them so the dealer does not inadvertently delete a working one.
Sunset Porsche (discounts mail order parts) has had the best price on new heads recently ~$125. You can also try EBay but be sure it includes the barcode or it is a $ paperweight.
There is also a chance that one of the PC board traces or switch solder joints has cracked. Before you give up look at the board around the switches. If there is a crack you might be able to solder it. Some folks have had success with that.
Also if you have any other working keys bring them so the dealer does not inadvertently delete a working one.
Sunset Porsche (discounts mail order parts) has had the best price on new heads recently ~$125. You can also try EBay but be sure it includes the barcode or it is a $ paperweight.
There is also a chance that one of the PC board traces or switch solder joints has cracked. Before you give up look at the board around the switches. If there is a crack you might be able to solder it. Some folks have had success with that.