I'm based in Sydney and after just under a year of driving the new C, I've got a message on my display that I need to change the battery for my key.

I picked up the keyless go option on the car and so I'm wondering if anyone out there had noticed that the battery lasts such a short period of time.

Also, if there are other guys in Sydney (or Oz) can you tell me where you got your batteries from??...is it just a matter of taking it back to the dealer and they use special devices to take the key apart and replace with special battery, or can I just pick up a battery from somewhere and open the key myself.

thanks guys.
glee88