Re-Programming The Factory C34 Nissan Keyless Entry

[joorsh]

I did a bit of snooping around and found a few posts here about the factory Nissan Stagea security and keyless entry. From what I understand there is the newer system called NATS, and then there's the older more basic security. I believe only the M35 and newer have NATS - is this true? Mine is a 2000+ Series 2 Stagea and it doesn't have any of the funky coloured markings at the base of the key- it looks just like this one:

The other day I removed a horrible old Japanese alarm from my car (well technically it was 3 alarms), and now my keyless entry doesn't work. Car still starts and drives, it's just the buttons on the key that no longer work (I only have 1 key).

I'm thinking one of three things has happened:

• I've friend the factory nissan security module while pulling out the dodgy old alarm.
  
• My remote codes have dropped off the factory security system for whatever reason.
  
• There's a cut wire under the dash that I missed (this one is highly unlikely - I was very thorough)
  

Is there a way to test to factory security module to make sure it's all working? And how difficult is it to re-program a key when you don't have a currently working one? If I need to go to a Nissan dealer, can anyone recommend a good one that won't freak out about imports? My nearest dealer is Nissan Blacktown (Sydney).

I'm also open to any non-Nissan suggestion - mobile locksmiths, etc who know what they're doing. I like having the key and remote built into one, so I'd rather not just put an aftermarket alarm on it and have more crap to carry around on my keyring.

[Spong]

Assuming you don't have a hardware problem, you can easily mate your existing remote keys to your car using the process I posted here in May 2010. It works for older and new Stagea models. See: http://www.skylinesaustralia.com/forums/topic/322846-how-to-program-a-nissan-remotekey-for-your-stagea/page__fromsearch__1