programing a second key
 

Hi All
I have a 2010 Mazda 3, I lost one of my keys at an airport. I don,t want to have to pay the dealers price for this replacement. I can get a new uncut key online and get it cut locally. My question I read on here that I need the dealer to program the 2nd key before I can add another (3rd) key is this true? Or because we bought the car new and it came with 2 keys do i still have to have the dealer redo the 2nd key??

Thanks

Anybody?????

Need 2 orginal keys to program 3rd key
 

Hopefully you've solved this issue at the dealership. For those that might run across this issue the following is how I handled my 2011 Mazda3 s key programming. You need to program a 3rd key as a backup when you first get your car. You need your 2 original keys in order to program the 3rd backup key. Other wise if you only have 1 key the Dealership is the solution to this and once you have 2 keys program a backup key in case you loose one again.

taken from another site
Items needed:
1. 2 pre-programmed transponder keys.
2. 1 new transponder key

The timing is critical to this procedure, please read through the entire procedure before attempting.
Procedure:
1. Insert one of the pre-programmed transponder keys and turn the ignition to on, leave on for at least one second (I wait until the red key symbol in the instrument cluster extinguishes), remove the key from the ignition.
2. Within 5 seconds insert the second pre-programmed key and turn the ignition to on for at least one second but no more than 5 seconds (use the key symbol for this as well) then remove the second key.
3. within 10 seconds insert the new key in the ignition and turn the ignition to on, if you are successful the red key symbol will illuminate then extinguish after about a second.

If you are not successful the red key symbol will flash repeatedly to indicate that you have inserted an invalid key. Remove the key, wait a minute and try it again, it took me a few times to get it perfect and I had done it before.

The new key cost me less than $25, the dealer even physically cut the new key for free.

I STRONGLY suggest that EVERYONE go out and get at least one spare key made prorgammed for their 3. If you lose one of your two original keys and don't have a spare you won't be able to make any new keys (as you need to prorgammend keys to program more) and will need to go to the dealer and have them re-program the ECU.

also youtube how to

http://www.youtube.com/watch?v=HyzWguejp2o#ws