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DIY: Programming a new key WHEN YOU ONLY HAVE ONE!! (with FORScan)

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DIY: Programming a new key WHEN YOU ONLY HAVE ONE!! (with FORScan)

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Old 10-16-2017, 08:17 PM
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Originally Posted by jberglan View Post
I tried to connect an OBD2 reader to FORScan and to my mazda 3 (2005). It finds the bluetooth device but can't "find my vehicle" .
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Above is a link to the OBD2 device i bought on amazon do I need a different one for my Mazda? There seems to be lots of them.
This is the one that i used to do my programming. Note that this is connected via Bluetooth and not Wifi.

Amazon Amazon

From my understanding though, OBD2 is OBD2. It shouldn't matter what car it is aslong as it has the connector. Quality is a different issue.
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Old 11-16-2017, 08:53 PM
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Worked like a champ! Got my $9.95 key from eBay programmed so now I have 2 keys. I was going to try this before buying another key for my Red RX8 but the seller sold out so now I have to take a chance on another cheap key. Anyone have a source for good switchblade keys? The plan was to add another key to each vehicle and then put them in the safe after I got some switchblade keys.
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Old 11-23-2017, 07:27 PM
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Originally Posted by GPappy View Post
Worked like a champ! Got my $9.95 key from eBay programmed so now I have 2 keys. I was going to try this before buying another key for my Red RX8 but the seller sold out so now I have to take a chance on another cheap key. Anyone have a source for good switchblade keys? The plan was to add another key to each vehicle and then put them in the safe after I got some switchblade keys.
Glad to hear it! Its been a long time since I wrote this, but the switchblade key that I got for my 2004 can be found all over ebay with the search "kpu41788". Do your homework on if it will work.
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Old 01-18-2018, 08:36 AM
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Originally Posted by s-rx8 View Post
Good news folks, once I heard the price that Mazda charges to program a 2nd or a new key I did all I can to learn what stops me from doing it myself. End result, complete success!


The problem:
When I bought my 2004 RX-8 GT, it only came with one key; I wanted to program a 2nd, and a 3rd to the car because it also did not come with a FOB so if I was locked out, that would require pop-a-lock. Everywhere I have read, it says that I absolutely needed two programmed keys to program another myself. Option B was to bring it to the (st)ealer and have them do it for more than 100 bucks per key.

The key:
Mazda charges quite a bit more for our transponder keys so I did some research to figure out what is compatible aftermarket, and I purchased two keys off ebay for ~10 bucks each. The link is below but it may become invalid some day so here was the description: "Transponder Chip Ignition Key Uncut Blade 4D-63 For Mazda 2 3 5 6 CX7 +9 MX5 RX8" and the description states: " Manufacturer Part Number: BMZ24TK14 MZ24TK14"

Link: Transponder Chip Ignition Key Uncut Blade 4D 63 for Mazda 2 3 5 6 CX7 9 MX5 RX8 eBay

Now go get that key cut while you gather the other tools needed...

The tools:
- ELM327 Bluetooth OBDII Adapter: These are cheap, I got mine off ebay for ~8 bucks to the door. Wired would work also, probably wifi versions that are compatible with iProducts too.
- A PC with bluetooth (option 2, wired adapter, wired to this pc, or wifi).
- FORScan OBDII software for the PC (the android and iPhone versions do not have the features you need to do this, but they have other capabilities that I will discuss later). Note, currently there is only a BETA version that works, make sure you read through the process notes below.
- FORScan's (currently free) extended license.
- Access to a website to decode the outcode and turn into an incode (this is discussed within the FORScan instructions, and its currently free as well).
- Your original key and the new cut key.

The Process:
I am a FORScan user, I use it to monitor various OBDII sensors. FORScan beats the competition because it easily allows me to access all the buses, this feature was not so simple in other softwares like Torque, etc. FORScan is designed for Ford, Mazda, Lincoln, Merc, etc. So all the PIDs that are available are already in the software. No need to mess around with adding separate pids. I've been using it on my Android and my windows pc tablet for a while now. Recently, I learned that FORScan for the windows pc supports PATS programming and also the RX-8, this is the feature that programs keys. So I took a challenge to overcome the Mazda costs and use this to program a 2nd key.

The first time I tried this, I had an error pop up that PATS programming is not compatible with my 2004 RX-8 saying because I had a push-button start. That is false so I contacted the support for FORScan and they worked with me to resolve the issue, then release a BETA version. This version is v2.33 and can be found here:
http://forscan.org/download/FORScanS...st10062016.exe
^^^^ Currently this is the only version that does not give the initial error. Future versions will work fine and I'll do my best to update this thread.

Running through the FORScan PATS programming process here:
FORScan forum ? View topic - How to program PATS using FORScan v2.2.*
I did not erase any keys, I went to the spare key program option and followed through with the instructions.

Note Problems faced:
During the programming portion, the software told me that the key programming failed. I reported this and it was explained to me that the OEM key is 40 bit and some of the aftermarket are 80 bit, which would cause an error. I went to module initialization after that thinking my key was still unprogrammed and did that with success but I don't think that was need. I then noticed the anti-theft light disappeared from my dash with the new key, meaning, my new key is programmed!!! SUCCESS!!!

After this, I did the factory 3rd key programming sequence and that worked fine. I now have three working keys, 2 of which are aftermarket keys!

Important little tidbit:
This saved me a ton of cash as you can see, I offered to donate to these guys but they don't accept donations. Their turnaround support time was incredibly fast (within hours I had a new version of the software)! Therefore, I want to do anything I can to give them a heck of a high-five...

If this works out for you, buy the phone version or a paid version when that is available, its cheap, that is the only way to support them at the moment. Links to follow:
FORScan Home Page
FORScan Links for Windows, Android, iPhone, Apple
FORScan v2.33 - test - 10062016 version that works with this process

Shawn
2004 RX-8 Grand Touring
Hey, Do you think this would work on mazda 2 2008.
I have two working keys, 1 aftermarked with chip i want to program so it could start the car.
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Old 01-19-2018, 02:07 PM
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Originally Posted by s-rx8 View Post
Good news folks, once I heard the price that Mazda charges to program a 2nd or a new key I did all I can to learn what stops me from doing it myself. End result, complete success!


The problem:
When I bought my 2004 RX-8 GT, it only came with one key; I wanted to program a 2nd, and a 3rd to the car because it also did not come with a FOB so if I was locked out, that would require pop-a-lock. Everywhere I have read, it says that I absolutely needed two programmed keys to program another myself. Option B was to bring it to the (st)ealer and have them do it for more than 100 bucks per key.

The key:
Mazda charges quite a bit more for our transponder keys so I did some research to figure out what is compatible aftermarket, and I purchased two keys off ebay for ~10 bucks each. The link is below but it may become invalid some day so here was the description: "Transponder Chip Ignition Key Uncut Blade 4D-63 For Mazda 2 3 5 6 CX7 +9 MX5 RX8" and the description states: " Manufacturer Part Number: BMZ24TK14 MZ24TK14"

Link: Transponder Chip Ignition Key Uncut Blade 4D 63 for Mazda 2 3 5 6 CX7 9 MX5 RX8 eBay

Now go get that key cut while you gather the other tools needed...

The tools:
- ELM327 Bluetooth OBDII Adapter: These are cheap, I got mine off ebay for ~8 bucks to the door. Wired would work also, probably wifi versions that are compatible with iProducts too.
- A PC with bluetooth (option 2, wired adapter, wired to this pc, or wifi).
- FORScan OBDII software for the PC (the android and iPhone versions do not have the features you need to do this, but they have other capabilities that I will discuss later). Note, currently there is only a BETA version that works, make sure you read through the process notes below.
- FORScan's (currently free) extended license.
- Access to a website to decode the outcode and turn into an incode (this is discussed within the FORScan instructions, and its currently free as well).
- Your original key and the new cut key.

The Process:
I am a FORScan user, I use it to monitor various OBDII sensors. FORScan beats the competition because it easily allows me to access all the buses, this feature was not so simple in other softwares like Torque, etc. FORScan is designed for Ford, Mazda, Lincoln, Merc, etc. So all the PIDs that are available are already in the software. No need to mess around with adding separate pids. I've been using it on my Android and my windows pc tablet for a while now. Recently, I learned that FORScan for the windows pc supports PATS programming and also the RX-8, this is the feature that programs keys. So I took a challenge to overcome the Mazda costs and use this to program a 2nd key.

The first time I tried this, I had an error pop up that PATS programming is not compatible with my 2004 RX-8 saying because I had a push-button start. That is false so I contacted the support for FORScan and they worked with me to resolve the issue, then release a BETA version. This version is v2.33 and can be found here:
http://forscan.org/download/FORScanS...st10062016.exe
^^^^ Currently this is the only version that does not give the initial error. Future versions will work fine and I'll do my best to update this thread.

Running through the FORScan PATS programming process here:
FORScan forum ? View topic - How to program PATS using FORScan v2.2.*
I did not erase any keys, I went to the spare key program option and followed through with the instructions.

Note Problems faced:
During the programming portion, the software told me that the key programming failed. I reported this and it was explained to me that the OEM key is 40 bit and some of the aftermarket are 80 bit, which would cause an error. I went to module initialization after that thinking my key was still unprogrammed and did that with success but I don't think that was need. I then noticed the anti-theft light disappeared from my dash with the new key, meaning, my new key is programmed!!! SUCCESS!!!

After this, I did the factory 3rd key programming sequence and that worked fine. I now have three working keys, 2 of which are aftermarket keys!

Important little tidbit:
This saved me a ton of cash as you can see, I offered to donate to these guys but they don't accept donations. Their turnaround support time was incredibly fast (within hours I had a new version of the software)! Therefore, I want to do anything I can to give them a heck of a high-five...

If this works out for you, buy the phone version or a paid version when that is available, its cheap, that is the only way to support them at the moment. Links to follow:
FORScan Home Page
FORScan Links for Windows, Android, iPhone, Apple
FORScan v2.33 - test - 10062016 version that works with this process

Shawn
2004 RX-8 Grand Touring
Hey, Do you think this will work for a Mazda 2 2008?
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Old 02-03-2018, 01:46 PM
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I registered just to say thanks to the OP for putting this up. I had to make an additional key for my 08 Mazda3, only had 1 original key, and this enabled me to make an additional key.

The only thing different that I did was that I used a connected cable, same one that I use for my Toyota Techstream programming.

Thanks, OP, you saved me a lot of money!
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Old 02-13-2018, 03:18 AM
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Originally Posted by hurricaneffs View Post
Hey, Do you think this would work on mazda 2 2008.
I have two working keys, 1 aftermarked with chip i want to program so it could start the car.


I cant say... FORSCAN has a list of supported vehicles, if its on the list, then it should work
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Old 02-13-2018, 03:20 AM
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Originally Posted by melcoeb View Post
I registered just to say thanks to the OP for putting this up. I had to make an additional key for my 08 Mazda3, only had 1 original key, and this enabled me to make an additional key.

The only thing different that I did was that I used a connected cable, same one that I use for my Toyota Techstream programming.

Thanks, OP, you saved me a lot of money!


Thanks for the feedback! I love it when I hear stuff like that, keeps me pushing to make another writeup! Thank the ForScan guys too, they helped alot!
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Old 04-01-2018, 02:59 PM
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One key already disabled

I only got one key with my rx8 when I purchased it used. The immobilizer locked me out... Do you think this will work to fix it? I was going to just send the ECU to racing beat to have the immobilizer completely removed but if this will work I would rather do this.

Last edited by Smithkjnc; 04-01-2018 at 03:00 PM. Reason: Grammer
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Old 04-15-2018, 06:44 PM
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Originally Posted by Smithkjnc View Post
I only got one key with my rx8 when I purchased it used. The immobilizer locked me out... Do you think this will work to fix it? I was going to just send the ECU to racing beat to have the immobilizer completely removed but if this will work I would rather do this.
I'm not sure how the immobilizer comes into play... there might be an option with forscan to override that. Might be worth asking those guys.
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Old 08-03-2018, 05:48 AM
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I'm not sure if people are still active on this thread, but I thought I'd give it a shot anyway... Can't hurt to ask right!?
I bought a 2006 mazda 3 sport a few months back, but it only came with one key. A few days later, my son managed to damage the transponder chip in the key when he dropped them onto a concrete floor from about 2 stories up. I was kinda screwed at that point, and had to fork out over 200 for a locksmith to come out to my house and to 'attempt' to reprogram a couple new keys. I say attempt, because he wasn't wholly successful. He replaced the transponder chip and managed to get the original key working again, so I was back to one fully working key. He then went to pair the aftermarket key he cut and paired to the ecu, but was unsuccessful. I was out with him and he even rang a few other locksmiths to see if they could shed any light on the matter, but to no avail. He was trying to pair it using the ignition/door sequence but it never got past the point where you add the new key. He said it was something to do with not having two central locking paired keys, as you have to click unlock on the main fob and the second fob before you can start adding new ones. Basically the key is paired insomuch that it will start the car without any issues, but the remote central locking doesn't work. So to use the second key you have to manually unlock the doors which sets the alarm off, and then quickly put the key into the ignition to silence the alarm. I guess this is kind of opposite to the problems some of you were having...
It's been like this for a while now, but I'd prefer to have at least two fully working keys. What I'm asking is, with the guidance outlined above, or by contacting forscan, will I be able to pair the coded and cut aftermarket key so that the central locking works on it? The locksmith said that the key he used they use for a variety of vehicles and that he's programmed it to tell it it's a mazda key, so it should be on the correct frequency. Its just the part of trying to get the ecu to accept the new fob that I can't seem to do...
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Old 09-05-2018, 08:49 AM
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Programming keys worked for my old 2002 Ford Excursion too. Thanks to Forscan.
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Old 09-05-2018, 03:41 PM
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Originally Posted by NuckChorris View Post
I'm not sure if people are still active on this thread, but I thought I'd give it a shot anyway... Can't hurt to ask right!?
I bought a 2006 mazda 3 sport a few months back, but it only came with one key. A few days later, my son managed to damage the transponder chip in the key when he dropped them onto a concrete floor from about 2 stories up. I was kinda screwed at that point, and had to fork out over 200 for a locksmith to come out to my house and to 'attempt' to reprogram a couple new keys. I say attempt, because he wasn't wholly successful. He replaced the transponder chip and managed to get the original key working again, so I was back to one fully working key. He then went to pair the aftermarket key he cut and paired to the ecu, but was unsuccessful. I was out with him and he even rang a few other locksmiths to see if they could shed any light on the matter, but to no avail. He was trying to pair it using the ignition/door sequence but it never got past the point where you add the new key. He said it was something to do with not having two central locking paired keys, as you have to click unlock on the main fob and the second fob before you can start adding new ones. Basically the key is paired insomuch that it will start the car without any issues, but the remote central locking doesn't work. So to use the second key you have to manually unlock the doors which sets the alarm off, and then quickly put the key into the ignition to silence the alarm. I guess this is kind of opposite to the problems some of you were having...
It's been like this for a while now, but I'd prefer to have at least two fully working keys. What I'm asking is, with the guidance outlined above, or by contacting forscan, will I be able to pair the coded and cut aftermarket key so that the central locking works on it? The locksmith said that the key he used they use for a variety of vehicles and that he's programmed it to tell it it's a mazda key, so it should be on the correct frequency. Its just the part of trying to get the ecu to accept the new fob that I can't seem to do...
When you manually unlock your car, if you turn and hold the key for a few seconds, doesn't the alarm shut off? It's not really an answer to your question, but it might make it less annoying while you don't get it fixed.
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