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DIY: Code your own key / remote

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Old 10-26-2010, 02:04 AM
  #351  
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This remote replacement worked for me:

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

New Remote
Visteon Model: 41525
FCC ID: KPU41788
IC : 4238A-41525
Old 11-11-2010, 02:17 PM
  #352  
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Originally Posted by phey_05
Just got my switchblade today...
totally works on my 2004 MT...

unit i bough on ebay:

FCC ID: KPU41788
IC : 4238A-41525
VISTEON 41525

i just followed this instructions: (few modification to be more NOOB friendly like me)

Remote Programming
• Ensure that all doors, trunk, and hood are closed,
• open the driver’s door
Carry out the operation below within 24 seconds:
Insert key
• Turn ignition to the run position and off, 3 times (on-off, on-off, on-off)
• Leave key in ignition (off position, not lock or on)
• Push door switch, 3 times (The door switch is the little rubber one on the jamb of the rear door next to your elbow when sitting in the driver’s seat, which controls the interior lights.)
• Car will lock, then unlock automatically after pressing the door switch 3 times
While the car is in unlock mode, Push 'Lock' on your newly acquired remote 2 times, (some suggest unlock, so try both)
• You will notice after pressing the Lock button on your remote, Car will lock, then unlock automatically again.
• Take out you key on the ignition and test your remote.

If it doesn't work, wait for a minute or so and repeat the procedure



NOTE: I DONT HAVE any existing remote. so no need to have an existing remote to do this procedure



One question though, i notice on most Rx8, when pressing the lock button on the remote the horn will honk, but mine doesn't have... anything i missed?

Do you know if this will work on the 07 wireless key fob? I am having problems with my wireless key fob.
Old 11-25-2010, 10:36 PM
  #353  
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saw this on dhgate tonight... might be an easy fix for those that don't have a second key for programming.

http://www.dhgate.com/high-quality-a...3775f4bb1.html
Old 12-04-2010, 04:26 PM
  #354  
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Originally Posted by takahashi
K1nG,They need for VIN number just for data logging. Mazda obviously does not want to give a RX-8 chipped key to anyone. There is no "special" key for your car. Most RX-8 key should be generatic for all RX-8 models *(4 port or 6 port)mercury273,Valet key should have a chip in it since it can start a car. So theoretically you can use it as a 2nd coded key.WDS DOES NOT code keys - it is simply bullshit and the identification tag is at your ignition of your car (not the WDS). If so WDS can start your car without your key and why do they want you to leave your set of keys behind for service then . Hope this helps.
It is just the solution for my problem, Thanks for your instruction!
Old 12-14-2010, 11:07 PM
  #355  
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For those who bought the switchblades off of eBay (that worked), can you list the seller you bought it from?
Old 12-28-2010, 01:09 PM
  #356  
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Just purchased a switchblade Key/Remote Combo from the Ebay Dealer Midwestkeyless for $47.27 shipped.

Listed as "MAZDA KEY KEYLESS ENTRY REMOTE FOB SWITCHBLADE KPU41788"

I just got it cut and programmed with 2 original keys. Worked flawlessly per instructions on the 1st page.

Remote also programmed 1st time with ease, again, as per instructions on the 1st page.

Thanks for all the great info on here!


2004 M/T Rx8

Last edited by Rx8Freehk; 12-28-2010 at 01:11 PM. Reason: added price
Old 01-02-2011, 05:49 AM
  #357  
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Originally Posted by Rx8Freehk
Just purchased a switchblade Key/Remote Combo from the Ebay Dealer Midwestkeyless for $47.27 shipped.

Listed as "MAZDA KEY KEYLESS ENTRY REMOTE FOB SWITCHBLADE KPU41788"

I just got it cut and programmed with 2 original keys. Worked flawlessly per instructions on the 1st page.

Remote also programmed 1st time with ease, again, as per instructions on the 1st page.

Thanks for all the great info on here!


2004 M/T Rx8

what do u mean have it cut?

Sorryz, noob...
Old 01-03-2011, 11:58 AM
  #358  
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Originally Posted by Blacknightz
what do u mean have it cut?

Sorryz, noob...
The key part of the switchblade is a blank key. You need to have it cut to match your original key just like having a key copied.
Old 01-03-2011, 11:27 PM
  #359  
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Originally Posted by Rx8Freehk
Just purchased a switchblade Key/Remote Combo from the Ebay Dealer Midwestkeyless for $47.27 shipped.

Listed as "MAZDA KEY KEYLESS ENTRY REMOTE FOB SWITCHBLADE KPU41788"

I just got it cut and programmed with 2 original keys. Worked flawlessly per instructions on the 1st page.

Remote also programmed 1st time with ease, again, as per instructions on the 1st page.

Thanks for all the great info on here!


2004 M/T Rx8
Rx8Freehk, I have an 04 also and I was thinking of ordering 2 of these remotes from Midwestkeyless. What was the visteon model, FCC ID, and IC#'s of your old remote if you dont mind? Just want to make sure they match mine so it will actually work before I drop the money for them. thanks

Last edited by Atticus6314; 01-03-2011 at 11:31 PM.
Old 01-04-2011, 10:27 PM
  #360  
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Thanks skrubol !
Old 01-05-2011, 12:31 PM
  #361  
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have an 04 also, bought an already used switchblade key from ebay for 20 bucks i programmed the remote part as per the first page worked first time, unfortunately i only received one key when i bought the car (craigslist) so now i have to go to the dealer to get a blank and have it cut and programmed. but the instructions worked !!! great thread.
Old 01-16-2011, 11:54 AM
  #362  
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I only have 1 key and I am buying the switch key how much do the dealer usually charge to program a new key?
Old 01-26-2011, 08:24 AM
  #363  
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Originally Posted by Omicron
FYI for those of you with the '05 key, or those replacing the remote... doing the key replacement procedure alone will not program the remote. To get that part working, you need to follow page 4 of the directions posted:
i have tried using the flow chart and i get to the part where the doors lock on there own after pressing the door switch 3 times . then i press the remote and nithing. I have tried several times thinking that the remote worked on a rolling code and would maybe take a while to match with the car but still no joy. I have tested that there is a signal coming from both of my remotes , they are both fine. Although can't say what the signal is. My remotes are visteon model No 41844 , do you or anyone else have any clues whats going on . I thought the battery had died because it stopped working all of a sudden but changing had no effect
Old 01-26-2011, 05:57 PM
  #364  
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Originally Posted by adywillie
i have tried using the flow chart and i get to the part where the doors lock on there own after pressing the door switch 3 times . then i press the remote and nithing. I have tried several times thinking that the remote worked on a rolling code and would maybe take a while to match with the car but still no joy. I have tested that there is a signal coming from both of my remotes , they are both fine. Although can't say what the signal is. My remotes are visteon model No 41844 , do you or anyone else have any clues whats going on . I thought the battery had died because it stopped working all of a sudden but changing had no effect
I had the same thing happen to me, ady. Remote just stopped working. Changed the battery and that didn't help. Went through the steps like you and I couldn't get the car to respond after pressing the button on the remote. Ended up having to buy another one. Bought a used one off eBay and worked like a charm first run through of the reprogramming process.
Old 02-28-2011, 04:01 PM
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worked great, thanks
Old 02-28-2011, 06:48 PM
  #366  
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Originally Posted by phey_05
Just got my switchblade today...
totally works on my 2004 MT...

unit i bough on ebay:

FCC ID: KPU41788
IC : 4238A-41525
VISTEON 41525

i just followed this instructions: (few modification to be more NOOB friendly like me)

Remote Programming
• Ensure that all doors, trunk, and hood are closed,
• open the driver’s door
Carry out the operation below within 24 seconds:
Insert key
• Turn ignition to the run position and off, 3 times (on-off, on-off, on-off)
• Leave key in ignition (off position, not lock or on)
• Push door switch, 3 times (The door switch is the little rubber one on the jamb of the rear door next to your elbow when sitting in the driver’s seat, which controls the interior lights.)
• Car will lock, then unlock automatically after pressing the door switch 3 times
While the car is in unlock mode, Push 'Lock' on your newly acquired remote 2 times, (some suggest unlock, so try both)
• You will notice after pressing the Lock button on your remote, Car will lock, then unlock automatically again.
• Take out you key on the ignition and test your remote.

If it doesn't work, wait for a minute or so and repeat the procedure



NOTE: I DONT HAVE any existing remote. so no need to have an existing remote to do this procedure



One question though, i notice on most Rx8, when pressing the lock button on the remote the horn will honk, but mine doesn't have... anything i missed?
Been two years since my '04 Key FOB stopped working. It's now time to get a Switch Blade key...
Old 02-28-2011, 11:50 PM
  #367  
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ok question, they key fob works with unlocking locking, panic, and trunk. But i cant start my car with it, is their something im missing? Thanks
Old 02-28-2011, 11:53 PM
  #368  
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Originally Posted by Domenico
ok question, they key fob works with unlocking locking, panic, and trunk. But i cant start my car with it, is their something im missing? Thanks
The FOB only transmits a signal to lock/unlock/pop trunk. The key has a microchip that needs to be programmed......

you need AT LEAST 2 keys that are already cut/programmed (this can include the valet key) to program another key, after having it cut.

If you don't have 2 keys already that will unlock/start the car you will have to get the new key cut (anywhere can cut the key so it unlocks the door) AND you will have to get it programmed so it will start the car. You can get the programming done at a dealership or at select locksmiths.

Once you have those 2 programmed you can program another.

If your FOB goes bad you don't need any working ones to program the new one. All you need is ONE functioning key (fully functioning, unlocks and starts car). Use that key and follow the procedure to program the FOB.

If you have an '04 you CAN buy the switchblade FOB with FCC ID: KPU41788. It will program correctly.
Old 03-01-2011, 12:02 AM
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Ok thanks Lord ET, I have 2 programed keys and the FOB im talking about is the switch blade. So i'm assuming theirs another set of instructions i have to follow so i can start the car with it. Ok thank you, i didn't read all the right parts.
Old 03-08-2011, 06:52 PM
  #370  
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my 04 remote went out. about to buy the switch blade. and i will have to do both the key encoding and the programing on the remote. since im getting a new uncut key. hope this will work.

Question: after click 3 times the door switch, i will click the "lock" button on the remote while is in the ignition correct?
Old 03-08-2011, 09:55 PM
  #371  
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Originally Posted by the stig
my 04 remote went out. about to buy the switch blade. and i will have to do both the key encoding and the programing on the remote. since im getting a new uncut key. hope this will work.

Question: after click 3 times the door switch, i will click the "lock" button on the remote while is in the ignition correct?
As long as you do everything with in 28 seconds.

Addendum:
After two years without a working FOB, I finally bought a used set from eBay for $20.
Received it and programmed both in seconds.

Attached Thumbnails DIY: Code your own key / remote-185817d1339278386-diy-code-your-own-key-remote-197832_1310880908738_1732089955_549047_7301352_n.jpg  

Last edited by Grace_Excel; 05-08-2016 at 03:55 AM. Reason: Added a picture
Old 03-10-2011, 01:32 PM
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nice pics of the keys
Old 03-10-2011, 01:46 PM
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works great and fun to play with
Old 03-10-2011, 11:47 PM
  #374  
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When i bought the car, they only gave me one. I'm just glad i never lost the key yet.
Old 03-11-2011, 09:42 AM
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So i just recently bought an 04 used from someone, and they only gave me 1 key and 1 remote

i've been wanting to switch out to the switchblade one and in order for me to do so I would have to go to the dealer to get it reprogrammed with their machine

my question is, could i go buy another switch blade after that and reprogram the new 3rd switchblade using the mazda newly reprogrammed key and my old 04 key?

i've been hearing that the ecu picks up a different frequency and all that stuff

all the mazda dealerships around here in canada charge 50$ to program a key and 50$ to program the fob which is disgusting


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