Sunday, 21 July 2019

Porsche 996 Remote Locking Broken - How to Fix

When I bought my Porsche 911 I was told that remote locking hadn't been working for at least 7 years since before the last owner got it. I put new battery in with no joy when I got the car in May but hadn't done any more investigation until today.

Porsche 996 Remote Locking Broken - How to Fix
Porsche 996 Remote Locking Broken - How to Fix

I followed the guides to reset with battery reversed and then did the ignition reset by putting key in, turning ignition on and then off followed by pressing the button on key which amazingly worked! So it's always worth giving them a try even if you think it might be hopeless. 

However the second key still doesn't work. After taking the key apart I can see why, the button microswitch connection on the circuit board is missing!

I've ordered the microswitches from eBay but at least I have one key working and don't need to rush to put key in ignition now!

Details of the RESET PROCEDURE I used

1) Reset by manually unlocking the car door and whilst the key is still in the door, press the button, lock/unlock button. This re-syncs the electronics if it is time that has caused the car to forget the remote. 

2) As the remote uses a rolling code (new code every lock cycle) if the remote sender has been activated more than 256 times and less than 1024 times with the receiver out of range or while the vehicle battery is disconnected the unit must be resynchronized as follows: 

- Switch on the ignition (ignition key must have the correct transponder). 
- Switch off the ignition. 
- Remove the key and press the remote sender button within 6 seconds after the ignition key has been removed 
The activation counter will then be reset to zero. 

3) If the fault lies with the remote, you can reset the remote fob's chip by inserting the button battery in reverse (wrong way round) for a couple of seconds. (ie -+, +-) 

You should try these in order, but note that if 3) is used, 1) and 2) will need to be run again. 

If none of those work, you probably need a new remote!

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