I believe you could as long as you have two working keys (your '04 key and the newly programmed switch blade). If you look back a few pages, you will see the instructions how to program your third one.

 

sounds good, i've been reading over the procedure and wasn't sure about the 04 key being able to be used after switching over the the 05+ switchblades

i guess i just have to go to the dealer to get robbed for a key reprogram

 

Try it first before you spend and have buyer's-remorse later.

 

$50 is cheaper than what they offered me. my local dealer quote me $360 after tax for the key it self and they cut it for "free" and program the key cost $130. and they said they need a $10k computer program to do it. i said to them that can't you do it yourself? because i remember i read it on the forum before. and he gonna be like well if you can buy a $10k program that we have then sure. what an ******

 

Hello,

When I bought my Mazda RX8 (2005) the dealer gave me only one key (excluding the remote fob) and the spare key got lost by courier/post

Now I have a remote from a 2004 mazda RX8. Will I be able to re program in to my car?

Pleae advise

Kind Regards

 

Do you have this 2004 remote?

Visteon Model: 41848
FCC ID: KPU41805
IC: 4238A-12076

I've never heard of anyone retro-grading; however, your only key will allow you to Program the remote.

 

Just did this and definitely DO NOT need ANY existing fob's to program the new one. Great DIY thanks to all.

 

Hmm tried this and after pushing the door button the car locks and unlocks its self. Then push the button twice on key fob and push unlock button on the door...NOTHING so i close the door and car locks and unlocks its self twice. Hmmm is this not for a 2004?

 

sigh

 

Works fine for 2004's, your remote is probably dead. Mine died completely, so I bought a 2005 Switchblade key from eBay for $40, and programmed it. That includes the blank key and the remote, awesome deal! Then just get the key cut at a locksmith, program it yourself using the instructions in the thread.

The instructions for programming a remote FOB works perfectly for a 2004.

 

I got my car from last owner, but the remote doesnot work, even I changed new battery, what should I do? I got only 1 remote from the last owner, 1 key, and don't know how to do

 

Is your Mazda a 2004? If so, buy the 2005 switchblade key. It works perfectly with the 2004 and it is cheaper, and includes the remote and key in one! Ordering them from eBay is usually the nest option. Get a new key, and try to get a 2005 one with the FCC ID of KPU 41788

If you have a different year car, then buy your respective key, and also buy the respective remote if you want the remote.

Now to program them: For the actual key, you will have to go to a special locksmith or to Mazda. The locksmith you go to will need to be able to program transponder keys. You might be able to find one that will do it for $75 or $50. Mazda will charge over $100.

To program the remote, just follow the instructions for programming the remote in the first post of the thread, that will work!

 

I have 2 remotes but none work. I have replaced the battery but neither of them work. I tried to program but I guess I need one working remote. Is this correct? Is there any way to reprogram them to the car? I have checked everything and the remotes are getting power so the only think I can think of is they lost their ID but this makes not sense.

 

You do not need a working remote to program another remote. Just either 1 or 2 keys (I forget which, it's in the procedure in the OP.) I think I have heard of remotes just stopping working though, so you may not have any luck there.

 

My final 04 remote went bad last week (that was my third one)..and replacing the battery didn't fix it.. so I finally broke down and bought one of these coveted flip key remotes after 8 years of using the regular 04 ones. Cost about 50 bucks shipped (eBay)...and programming the new remote was effortless. Just have to get the key cut somewhere tomorrow.

By the way, I hope the paint on the lock/unlock button on these remotes doesn't fade as quickly as the paint on the old remotes did. That was something that really annoyed me about the old ones.

 

Hey I've got a question about programming the new key (not the remote) and I read through every page on this thread and noticed this was never asked after 7 years which is surprising.

I've got two old keys to my 8 plus this new one, but I haven't been able to find one of the 2 old keys. Probably in the garage somewhere or something. When performing the new key programming procedure, do I actually need both keys to be present in order to program the new key, or can I do it with just one of the old ones?

 

Two keys need to be 'recognized' before the ECU will take a third.

 

Damn...so I've got to go find the spare key in order to do this. Oh well..thanks

 

The problem is I got only 1 key for this 8, and I need a new key ( with remote), What should I do? Take my car to dealer is the only way?

 

If you only have 1 key, you have a few options:

1. Go to the dealer, purchase a new key/remote combo, and have them cut/program it.
2. Go to the dealer, purchase a new key/remote combo, have them cut/program the key, and then program the remote yourself (if they want to charge you for programming the remote)
3. Go to the dealer, purchase a new key/remote, then find a locksmith that can "program a transponder key for a 2004 Mazda RX8", and have them cut/program the key. Then program the remote yourself.
4. Go online, purchase a new key/remote (cheaper), then find a locksmith (just like the step above)

Just call around for locksmiths and ask them if they can program transponder keys. You might be able to find one that will do it for $50. Otherwise, you're looking at over $100 at the dealer for just programming the key.

 

5. Buy a second normal key from the dealer, then buy a switchblade from the Internet, have it cut somewhere and program the key and remote yourself.

 

Just went to the dealer and they couldn't program any remotes.

I came back from my deployment and my car hadn't been started at all (wife doesn't love me), so it completely died. Ever since then the remotes haven't worked. The anti-theft system still works and the horn goes off if someone tries to open the door when it is locked. The red blinking key light blinks normally. I can get it into programming mode, but once you need to click the button on the remote, nothing happens. I tried it about 100 times and gave up on it and figured I just needed to get the dealer to do it. He tried it and did exactly what I was doing, which would have pissed me off if he had the "magic touch" or something. They're saying it is electrical issues or something, so I have to take it back in to get it diagnosed for 100 bucks. Cost me $75 to have them tell me they couldn't program any remotes and get a key cut/programmed for "free."

 

Sorry if I'm asking a very noobish question... (on the bright side I'm not starting a redundant thread!)

I have a 2005 Rx8 with only one key (no remote, no service keys). I'm not too concerned with adding more keys, but I definitely want to add a remote. As far as I can tell from this thread, I only need:

1 key, no pre-existing remote to add a new remote[/B]
2 keys to add a new key

So if I just buy a 05 rx8 remote from ebay, I should be able to program it using the steps mentioned in this thread using my single key?

 

Yes, you only need one working key to program the FOB and make sure you buy the right Model.

Old:
Visteon Model: 41848
FCC ID: KPU41805
IC: 4238A-12076

What you need to buy:
Visteon Model: 41525
FCC ID: KPU41788
IC: 4238A-41525

 

I found these numbers on my Keyless Remote Controller Unit (below handglove box)

FE03 67 5DZ A
4A13C
Visteon 41872 43

May I know two things?
1) Can I use switchblade remote?
2) Which one should I get?

It's like this here:
http://cgi.ebay.com/ebaymotors/04-05...Q5fAccessories

And obviously I can't determine which IC that it's compatible with. Any clue?