Spare Key & Fob programming for Mazda 5

[Procrustes]

I made a 3rd key for my 2007 mazda 5...

I bought a transmitter fob off ebay (~$30). I programmed it using instructions in the PDF file. You can program up to 3 fobs for your car.
-Note that although the PDF specifies it is only for 2006 vehicles below a certain VIN, it worked fine on my 2007.

I bought the RFID key blank from the dealer (~$10?) and had it cut at the local locksmith ($5). You or locksmith will need to tap in the small roll pin to attach key to the fob if it's not already attached. I then programmed the key using instructions in the GIF file. You can program up to 8 blanks this way.

Good luck!

[slvrsleeper]

Very cool! and thanks for the info (goes to find key fob on E-bay)

[retrorach]

Does anyone have the remaining instructions from that GIF posted before? I bought my Mazda5 used and only have one key. I want to program two more keys and the PDF instructions don't seem to work.

[remarquian]

Does anyone have the remaining instructions from that GIF posted before? I bought my Mazda5 used and only have one key. I want to program two more keys and the PDF instructions don't seem to work.

I think you need to go to the dealer to get them to program at least one other of your keys.

The dealer told me and all the instructions I have seen all require two remotes. I think the intent of this is to be a security feature to prevent someone from cloning a key with just one copy.

But hey, please correct me if I'm wrong.

[coolmazda5]

^^ That is correct, 2 same programmed remotes are needed to create a 3rd one. I agree, this measure is for security reasons (i.e. when dropping your car at the valet parking)

[olddaddy]

Has anyone bought a fob and key from ebay? If so, from whom and did everything work?

[remarquian]

I bought a blank switchblade key off of Ebay for like 50$US (including shipping), and it worked just fine. Well almost. Lowes screwed up cutting the key. So I had to buy another key blank for like 7 bucks and have it cut and installed by a professional (like another 10$US).

There is a sequence to program the transponder in the key, and another to program the remote that came with the key and is floating around this board.

[olddaddy]

I bought a blank switchblade key off of Ebay for like 50$US (including shipping), and it worked just fine. Well almost. Lowes screwed up cutting the key. So I had to buy another key blank for like 7 bucks and have it cut and installed by a professional (like another 10$US).

There is a sequence to program the transponder in the key, and another to program the remote that came with the key and is floating around this board.
I'm not sure what you mean "installed by a professional". What was installed?
Also, do you remember the seller you brought the fob and key from on ebay?

[remarquian]

I'm not sure what you mean "installed by a professional". What was installed?
Also, do you remember the seller you brought the fob and key from on ebay?


Here is i picture of a key:

133123

So I got my key cut at Lowes [the big box hardware store], they screwed it up, and it couldn't open the car or turn the ignition. So to fix it, I bought just the metal blade part off of Ebay and had a professional locksmith, cut the new blade, and replace the old worthless blade on the key.

To replace the blade, open your key, so that the blade and the body is at a 90 degree angle. You'll see a pin at the base of the blade. Pop that pin out and the blade detaches. The trick is getting the pin back in :-).

This was an example of my stinginess costing me an extra $12 and a couple hours of time.

I bought my key from remotesupermarket on ebay for 47$US total. The extra blade was 7$US total from gemworld4u. They were picked because they had good ratings and the lowest price I could find. The delivery was fast.

I would recommend that everyone get another key made, in case you lose one, as visiting the dealer sucks.

And the beauty about the way the system works, is that if you have three keys, and if you do lose a key, upon discovering you've lost it, you can program out the lost key with the two remaining keys. So yes, someone who finds your key can get into your car, but they won't be able to start it.

So does that make sense?

[olddaddy]

Here is i picture of a key:

133123

So I got my key cut at Lowes [the big box hardware store], they screwed it up, and it couldn't open the car or turn the ignition. So to fix it, I bought just the metal blade part off of Ebay and had a professional locksmith, cut the new blade, and replace the old worthless blade on the key.

To replace the blade, open your key, so that the blade and the body is at a 90 degree angle. You'll see a pin at the base of the blade. Pop that pin out and the blade detaches. The trick is getting the pin back in :-).

This was an example of my stinginess costing me an extra $12 and a couple hours of time.

I bought my key from remotesupermarket on ebay for 47$US total. The extra blade was 7$US total from gemworld4u. They were picked because they had good ratings and the lowest price I could find. The delivery was fast.

I would recommend that everyone get another key made, in case you lose one, as visiting the dealer sucks.

And the beauty about the way the system works, is that if you have three keys, and if you do lose a key, upon discovering you've lost it, you can program out the lost key with the two remaining keys. So yes, someone who finds your key can get into your car, but they won't be able to start it.

So does that make sense?

Thanks for all the detailed info. I will be purchasing one also now.

[scknight2]

I bought my key from remotesupermarket on ebay for 47$US total. The extra blade was 7$US total from gemworld4u. They were picked because they had good ratings and the lowest price I could find. The delivery was fast.

I would recommend that everyone get another key made, in case you lose one, as visiting the dealer sucks.

So a friend of mine lost one of his 2 keys for his 5. The dealer wants $350 for a new replacement or $150 for just a key without the fob. My understanding is that if he bought a replacement from remotesupermarket, he would still have to take it to the dealer to be programmed (and cut), right? Anyone know how much they charge for that?

Thanks.

[trev0006]

Thanks for the tip.

[olddaddy]

I bought a remote and with a blank from ebay transponderisland. I bought from them because it was a brand new remote (others selling said slightly used), the cost was $54 shipped. Instructions were sent with remote but I used the instructions posted here. I had the blank cut at a local locksmith for $2. No problems programing the remote and key. It is my 3rd remote and I have 2 stand alone non remote keys. Hopefully I wont need to do this again but if I do it will not be a problem. Thanks to remarquian and those who contributed info in this post.

[Chris B]

Any chance this will work with the 2008? The key fob looks exactly the same as above.

[remarquian]

Any chance this will work with the 2008? The key fob looks exactly the same as above.

fersure

[fam]

I have one valid key and the dealer just mailed me a new one already cut based on the code after I just bought it used. The dealer was 50 miles away so I dont want to go back just for a key. Anyone know the cost to have the local mazda program it?

[fam]

Wowzuh.

Dealer mailed me a new key already cut and works right out of the bag even keyless.

booya.

[2003proes]

anyone want to share the program code for the key fob. i'm curious as to whether or not the protege fob will work to unlock the doors.

[olddaddy]

anyone want to share the program code for the key fob. i'm curious as to whether or not the protege fob will work to unlock the doors.

It is on the OP's 1st post.

[OilGuy]

I've got a 2008 Mazda5 and just bought the regluar (non-switchblade) key (with chip) from the Mazda dealer (part number F1Y1-76-2GX). I paid MSRP for the key (~$28), but they cut it for me too. Programming was easy per the directions above.

[mespike]

Is there anyway to replace the "remote" part of the key without replacing the key? The reason I'm asking is because the coil part that holds my house key broke off. Nothing's wrong with the key itself and didn't know if I could buy another key & just switch the outer parts??

[randlm5]

I have a 2006 Mazda 5 and I only have one key for it. I know this was already asked but do I need to go to the dealer to program a second remote or is there a process that works? I have tried one and it does not seem to work. Also is there a different process for programing the alarm portion?

[Heat]

Is there anyway to replace the "remote" part of the key without replacing the key? ...
You can separate the key from the transponder, the instructions are in the first post of this thread. On the switchblade style key, the key and the transponder are two separate parts. The key ring is actually a third part.

I have a 2006 Mazda 5 and I only have one key for it. I know this was already asked but do I need to go to the dealer to program a second remote ... Also is there a different process for programing the alarm portion?
Since you have one key you have to have the dealer program the second key for you. While you are at it, might as well have them program a second transponder (fob), should be one hour of labor.

Once you have a second key and second transponder, I highly recommend getting a third key / transpoder and programming it yourself for use as a spare key. Think of it as insurance in case you lose one of your two existing keys.

With regard to the alarm, I have no idea, my Mazda5 doesn't have an alarm.

[mazdadude]

I have a 2006 Mazda 5 and I only have one key for it. I know this was already asked but do I need to go to the dealer to program a second remote or is there a process that works? I have tried one and it does not seem to work. Also is there a different process for programing the alarm portion?

In order to program a 2nd key, the dealer must do it.

However when you add a 3rd key, you can do it yourself, but you must have the other two keys during the programming of the third one.

[Mntnbkr]

On the switchblade style key, the key and the transponder are two separate parts.


Does anyone know the part # or approx price from dealer for the upper third of the switchblade style key (switchblade holder part w/key blank)?

When we bought our 5, the dealer thought they lost our key, so they supplied a new blank fob...then they found our actual key in some shop guys pocket several weeks later and told us to keep the new blank for all the trouble. Well I was inspired by all you to get my third key cut and programmed, so I dug it out of the car stuff, opened the box, and found out it is only the transmitter portion of the fob. (uhm) Now I need the rest. Any lines on part # and where best to get?

Thanks.

[Heat]

Does anyone know the part # or approx price from dealer for the upper third of the switchblade style key (switchblade holder part w/key blank)?...
Short answer: G2YA762GXB and $48.76 (MSRP), cutting of the key should be included.

Long answer: The switchblade style key is made up of three parts:

CC43675RYC: transponder part of switchblade style key, $126.70 (MSRP = $158.37)*
G2YA762GXB: key part of switchblade style key, $39.01 (MSRP = $48.76)
KRTT09001: key ring, $0.49 (MSRP = $0.61)

MSRP is what you will pay if you walk into your local Mazda dealer, the lower price shown is the price from this site: http://www.trademotion.com/partlocator/index.cfm?siteid=214264 which is Montgomery Mazda out of Charlotte, North Carolina.

Montgomery Mazda will cut the key(s) for you at no extra cost, based on your VIN only. Shipping is $6.50 for the continental US if I remember right though free shipping on orders over $100 or $125. I had a couple keys made there this past April and they were cut perfectly and work great.

There is another style of key, a “normal” key without the transponder / fob. This is what I keep on my key ring – I like it because it is a lot smaller than the switchblade style key plus I don’t have to worry about it getting wet, getting hit while in my pocket, etc. This key is part number F1Y1762GX, $22.58 (MSRP = $28.22).

As long as I'm mentioning sites, here is another one that I have used and am happy with: Med Center Mazda out of Pelham, Alabama: http://www.mazdaparts.org/mazda5test.html

I didn't buy keys from Med Center Mazda, rather I bought items for changing my oil (filters, replacement housing) as well as a cargo net. I'm happy with both Med Center Mazda and Montgomery Mazda.

* There has recently been a $15 price drop in part number CC43675RYC (transponder), I paid $141 for it at the above-referenced site in April.

[dan4behr]

So a friend of mine lost one of his 2 keys for his 5. The dealer wants $350 for a new replacement or $150 for just a key without the fob. My understanding is that if he bought a replacement from remotesupermarket, he would still have to take it to the dealer to be programmed (and cut), right? Anyone know how much they charge for that?

Thanks.

OMG!(wow)
I had an extra key (without remote) made by my dealer for 10 bucks.
Sure, it'll only get the door opened, but I have it in one of those magnetic boxes someplace under the car. At least I have a way to get in should I ever lock myself out and leave the "real" key+fob inside the car...

$150 for a door key is beyond outrageous, IMHO!

[Mntnbkr]

Heat-
You rock. Now THAT is an answer - thanks for all the really good information. I'm off to order a key, and I like the fixed key option you mentioned.
Also, I agree with your statement about Med Center Mazda - I have bought from them before and talked to them on the phone before - they are competetive and helpful.
By the way, I just called my local dealer and MSRP means nothing to them (except maybe Must Screw ouR Patrons)- they set their own price and they want $65 for the switchblade KEY PART ONLY and $40 for the non-switchblade style key. Highway robbery - I'l be calling Med Center or Montgomery.
Thanks again.

[Heat]

...I'l be calling Med Center or Montgomery...

If you do call Med Center about the keys, please post back with what their key prices are, and keep in mind that they have free shipping on orders over $100 to the continental US. Assuming their prices are in line with Montgomery Mazda, you can get the "normal" key, the switchblade key (key part only), and a couple more things to get you over $100 for free shipping. Maybe a cargo net and a bottle of touchup paint?

As an example of what you can get from them, here is what I ordered from Med Center:

Oil Filter 5-pack with free oil filter wrench: $23.80
Mazda oil pan drain plug washer: 5 @ $1.37 each = $6.85
Mazda Oil Filter Housing: $14.15 (just in case…)
Mazda Air Filter: $15.51
Mazda5 Touchup Paint: $5.34
Mazda5 Cargo Net: $38.32
Mazda Zoom-Zoom Decal: Free

Total cost = $103.97 with free shipping

Just keep in mind that at Montgomery Mazda they cut the keys at no extra cost, based on the VIN only. Maybe Med Center does this also, I don't know. You still have to program the key yourself but that takes about ten seconds.

One other thing, some people have found cheap keys on ebay. I have not personally looked at ebay for Mazda5 keys so I don't know much about what's out there or what the going price is on ebay.

[AwaKeN]

Do they take internet orders ? If so can you give me their web site ?

Thanks

[coolmazda5]

^^ Just check post #26

[AwaKeN]

Ohh great !! Thanks !

[Mntnbkr]

If you do call Med Center about the keys, please post back with what their key prices are.

I ended up ordering through Montgomery Mazda - they were a bit cheaper, closer to me (faster shipping), and Jason was very helpful. He said I HAD to order on the web as they require the VIN (in text) to cut the key. Based on what Jason said on the phone , if I placed the order before noon on Thursday, he would cut the key (included in same price) and it would ship USPS same day and I should get it by Saturday. We'll see if I get mail tomorrow - if so, great service. It was $22.58 + 6.50 shipping. I did also get a cabin air filter for 23.78, but since that's all I needed I could not get over $100. No increase in shipping to include the filter.
Med Center was also helpful on the phone and VERY close in price - 23.99 + approx. $10 for shipping. (and they DO cut for that price), but again, since I couldn't get to $100 for things I really needed, I opted to go with Montgomery for less $$.

[mazda5ca]

OMG!(wow)
I had an extra key (without remote) made by my dealer for 10 bucks.
Sure, it'll only get the door opened, but I have it in one of those magnetic boxes someplace under the car. At least I have a way to get in should I ever lock myself out and leave the "real" key+fob inside the car...

$150 for a door key is beyond outrageous, IMHO!

Hi there, new to the forums, a great resource!

A question about keys... I got a no chip key cut (2007 Mazda 5 GT) at the dealership at last service time with the same idea as above. Problem is, when I try using it, it locks and unlocks the driver's door just fine, but it does not disarm the factory-installed alarm... Am I missing something? Should I be unlocking it a certain way?

Thanks!

John

[wmzda5]

Yes if you have a factory alarm it will go off if you open the door with the no chip key, if you close it using the key FOB which activates the alarm (GT). You only use that if you want to intentionally lock the key fob inside the car for safekeeping (so it wont get wet during swimming / water sports) in this case you will have to lock it manually or using the no chip key which will disable the alarm.

[mazda5ca]

Yes if you have a factory alarm it will go off if you open the door with the no chip key, if you close it using the key FOB which activates the alarm (GT). You only use that if you want to intentionally lock the key fob inside the car for safekeeping (so it wont get wet during swimming / water sports) in this case you will have to lock it manually or using the no chip key which will disable the alarm.

Thanks, that's the answer I was kinda hoping for!

[Heat]

Hi there, new to the forums, a great resource!

A question about keys... I got a no chip key cut (2007 Mazda 5 GT) at the dealership at last service time with the same idea as above...
Are you sure that you have a non-chipped key? If you paid around $30 for it, it's got to be the chipped version. Try progrmaming it, the instructions are in Post #1 of this thread:

http://www.mazdas247.com/forum/showthread.php?t=123695620

If it really is a non-chipped key, consider picking up a chipped key so that you can start the car as well as avoid the alarm issues. About $30 with cutting included from the dealer. If your dealer tries to charge labor for cutting it, or has marked up MSRP (should be less than $29 plus tax) just buy it online at Med Center Mazda - less than $23 plus $6.50 shipping, cutting of the key included. You can program the chip in the key easily yourself, really easy.

[GBean]

Slightly off topic... Anyone know how to change the battery in the fob?

[Heat]

Slightly off topic... Anyone know how to change the battery in the fob?

The instructions are in the file

M5_fob_program.pdf

present in the first post.

[particlekeeper]

In all the auctions that are on Ebay most sellers ask to compare the following numbers with the ones you have on your keys:

FCC ID: KPU41788
IC : 4238A-41525
Visteon No. 41525

What I have on my key is completely different.

MR 1382 ANRT 2005
CE C 5616
Mitsubishi Electric SKE126-01

Also none of the sellers offers a key that has the same buttons like mine. Instead of a panic button, I have a button to disable the car alarm.
Maybe I should add that I live in Germany and have a "European" Mazda 5.

Do the numbers of the keys you purchased on Ebay match what's inside the original keys?

[GBean]

Well they are also made by mitsubishi but being the european model I would guess they are incompatible.
My originals match the ebay ones.

[joeym509]

Just picked up a 3rd key for my 5 and thanks to the OP I was able to program it in less than 2 minutes! The dealer wanted $100 to program it for me. Big shout out to the OP for posting this!(rockon)(yippy)

[Captain KRM P5]

thanks for the heads up, good writeup

[wunchun]

Thanks for the tips on getting a spare remote key, I emailed Jason at mazdaparts.com and got a quote of $165 for the key and remote with free shipping. Is it a fair price?

[GBean]

You can get them on ebay for less than 30 and program them yourself.

[Heat]

Jason is with Montgomery Mazda though I guess it's possible that there is also a Jason at Med Center Mazda (www.mazdaparts.org). Anyway, in the grand scheme of things, is $165 a fair price for a key and a fob? Heck no, it’s outrageous, but the days of getting a spare key made for 97 cents at Wal-Mart are long-gone, and the $165 is a lot less than your local dealer would charge. And keep in mind that you will need to program the key and fob yourself, though through Montgomery Mazda (and I assume Med Center Mazda) the keys come pre-cut based off of your VIN only. As far as ebay goes – post a link to a $30 key with fob, I’d like to see what one of these auctions look like, and keep in mind that you still have to have the key cut.

Finally, pick up an extra key, part number F1Y1762GX, $22.58 at Montgomery Mazda (MSRP = $28.22) as a spare. And you do have two working keys and two working fobs right now, correct? If no you’ll need to go to the dealer to have your current key / fob reprogrammed as well as the new key. If you have two working keys and two working fobs right now, you can program a third by yourself.

[GBean]

The one I bought on ebay was quite legit, and only cost $3 to have cut at a locksmith. The programming is super easy as long as you already have two working keys.

[wunchun]

I followed the advises of others on the forum and bought a uncut fob key with remote from ebay for $43 shipped, then paid $5.29 for a local locksmith to cut the key, spent 5 min programming the key and remote and everything worked like a charm.

Total $$ spent is $48.29 (yes I might have overspent a bit on the key cutting part because I didn't want to pay $1 at Lowes and end up screwing myself after hearing the horror story of another poster.)

That's a huge saving over the cheapest dealer online. This forum rocks!

[SGT_OKINAWA]

Question?

Don't you guys have the 'NO KEYS AT ALL' system?

http://carview-img02.bmcdn.jp/carlife/images/UserCarNote/678279/p1.jpg

I just have a credit card size 'card' that I put in my wallet and then all i have to do is push the button on the door handle (to unlock the car) then get in and turn the knob.

Just wondering, I've not seen a 'big key' like that before for the Premacy here in Japan.

Peace!(rei)

[MBEE]

Lost a "switchblade" key fob for 2007 Mazda 5.

Dealer quoted me:
$57.04 for a key
PLUS $166 for a fob
PLUS service $$ to have it programmed!! (we want to "lock out" the lost remote.

The dealer's parts rep says there isn't another key option listed in his catalog-just the switchblade.

What are my options??? I just have one switchblade key fob- no other keys.

Thank you!!

[wmzda5]

In that case you would want to go to the dealer, theres no other way. Even if you still have the 2 keys and made 1 extra keys and then lost 1 key, you still need to see the dealer to lock out the lost key. You dont want anybody to take away your MZ5 do you?

[Heat]

... What are my options??? I just have one switchblade key fob- no other keys.
Pick up a new switchblade style key either from the online places listed in this thread (about $180 or so total), or off of ebay as mentioned above. You'll still have to go to the dealer to have the key / new fob programmed since you have only one.

There is a non-switchblade style key, part number F1Y1762GX, MSRP is about $28. This is what I carry around on my keyring, the fob is too bulky for my taste.

Since you only have one key you have to have the dealer program the second key. Same for the fob. If you had two keys or two fobs you could program a third by yourself, but you can't with only one. Because of this, I highly recommend that you pick up a third key as a spare. Won't be cheap, but think of it as insurance.

[wREI]

I also lost one of my switchblade keys, i have mazda 5 2005.

what i want to ask is how are the keys bought from ebay? are they original oem mazda keys or some cheap ass china copy?

anyone who could recommend one good seller on ebay while your at it. thinking of buying 2 keys with fob
+

[wREI]

In all the auctions that are on Ebay most sellers ask to compare the following numbers with the ones you have on your keys:

FCC ID: KPU41788
IC : 4238A-41525
Visteon No. 41525

What I have on my key is completely different.

MR 1382 ANRT 2005
CE C 5616
Mitsubishi Electric SKE126-01

Also none of the sellers offers a key that has the same buttons like mine. Instead of a panic button, I have a button to disable the car alarm.
Maybe I should add that I live in Germany and have a "European" Mazda 5.

Do the numbers of the keys you purchased on Ebay match what's inside the original keys?


I have exact same part numbers as your and the key looks the same without the third button, i only have 2 buttons and no third one as your disable alarm.

have you found any match?

[KBrian]

I have 4 keys for the 07 MZ5. 2 switchblade remotes; a black plastic-head transponder key (42 bucks can. at the dealer); and a 3 dollar metal key that only opens the drivers door (always hidden inside the MZ5). I am thinking of getting a blank switchblade from Ebay to have a backup. I hate paying dealer prices for anything. :0

[particlekeeper]

I have exact same part numbers as your and the key looks the same without the third button, i only have 2 buttons and no third one as your disable alarm.

have you found any match?

Sorry, for not answering back, but somehow the information mail about replies to my posts doesn't get through to my email account.

My original key now finally gave up :-( It's falling apart if I don't put it together with a rubber band. I'll go and order two of the keys off Ebay and try to program them. If I don't succeed I just take the new housing and put the electronics from my old key in there.
I'll let you guys know if it works out.

[particlekeeper]

I just ordered a spare key from Ebay
First of all: I was not able to program it for my car :-(

As I needed it as replacement for a broken key (which still worked), I just used the housing and put my electronics into it.

All keys together:
http://foto.arcor-online.net/palb/alben/95/225695/400_3236313463343330.jpg (http://foto.arcor-online.net/palb/alben/95/225695/1024_3236313463343330.jpg)
left the new uncut key, in the middle my original spare key and my broken key to the right.

http://foto.arcor-online.net/palb/alben/95/225695/400_6131653936343435.jpg (http://foto.arcor-online.net/palb/alben/95/225695/1024_6131653936343435.jpg)
I suppose it's due to the different circuits in the keys. As you can see one has the number JX331BA3802C, the other ends with 5802C

Basically they look identically, despite the battery contact and the IC:
http://foto.arcor-online.net/palb/alben/95/225695/400_3139666639646234.jpg (http://foto.arcor-online.net/palb/alben/95/225695/1024_3139666639646234.jpg)
http://foto.arcor-online.net/palb/alben/95/225695/400_3736353664646464.jpg (http://foto.arcor-online.net/palb/alben/95/225695/1024_3736353664646464.jpg)
One Chip is labelled MH860-DM98519K the other one MH860-DM98663K.

For completeness I took a picture of the numbers printed onto the key:
http://foto.arcor-online.net/palb/alben/95/225695/400_3238633462356236.jpg (http://foto.arcor-online.net/palb/alben/95/225695/1024_3238633462356236.jpg)

I'll go and ask the Ebay dealer if he has a key having a circuitry with the number my key has.
At least it was a cheap solution to get a "new" key. Cheaper then getting one from Mazda.

[SGT_OKINAWA]

I just ordered a spare key from Ebay
First of all: I was not able to program it for my car :-(

As I needed it as replacement for a broken key (which still worked), I just used the housing and put my electronics into it.

All keys together:
http://foto.arcor-online.net/palb/alben/95/225695/400_3236313463343330.jpg (http://foto.arcor-online.net/palb/alben/95/225695/1024_3236313463343330.jpg)
left the new uncut key, in the middle my original spare key and my broken key to the right.

http://foto.arcor-online.net/palb/alben/95/225695/400_6131653936343435.jpg (http://foto.arcor-online.net/palb/alben/95/225695/1024_6131653936343435.jpg)
I suppose it's due to the different circuits in the keys. As you can see one has the number JX331BA3802C, the other ends with 5802C

Basically they look identically, despite the battery contact and the IC:
http://foto.arcor-online.net/palb/alben/95/225695/400_3139666639646234.jpg (http://foto.arcor-online.net/palb/alben/95/225695/1024_3139666639646234.jpg)
http://foto.arcor-online.net/palb/alben/95/225695/400_3736353664646464.jpg (http://foto.arcor-online.net/palb/alben/95/225695/1024_3736353664646464.jpg)
One Chip is labelled MH860-DM98519K the other one MH860-DM98663K.

For completeness I took a picture of the numbers printed onto the key:
http://foto.arcor-online.net/palb/alben/95/225695/400_3238633462356236.jpg (http://foto.arcor-online.net/palb/alben/95/225695/1024_3238633462356236.jpg)

I'll go and ask the Ebay dealer if he has a key having a circuitry with the number my key has.
At least it was a cheap solution to get a "new" key. Cheaper then getting one from Mazda.

Great info and AGREE cheaper than Mazda dealer (shady)

Peace!(rei)

[BlueThunder]

I'm looking to get a 3rd key but mainly to lock/unlock doors in winter time (ghetto style remote car starter). I was thinking to a cheap key but I found that on Ebay. Do you think that can work on my 08 MZ5?
http://cgi.ebay.ca/2006-2007-06-07-MAZDA-5-RX8-MX5-TRANSPONDER-CHIP-KEY_W0QQitemZ230383682692QQcmdZViewItemQQptZMotors _Car_Truck_Parts_Accessories?hash=item35a3f00484&_trksid=p3286.c0.m14

http://i24.ebayimg.com/03/i/001/08/96/eab4_12.JPG
They mention only 06-07 models. I don't believe there is much of a diffence between 06-07 and 08 models. What do you think?

[KBrian]

Lots of references to Mazda-spec, non-fob transponder keys in these forums. Canadian dealers retail them for between $40 to $60 Can. American $20 to $30. These keys all carry the same part number (which escapes me).

Don't know who makes the key listed on ebay, though.

[bobaganoush]

Thanks for all the information posted.

My fob (mazda5 07) is often unresponsive, and I believe this is down to a low battery.
Will replacing the battery myself cause any issues with the programming?

I've found the batteries on eBay for $7: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=260294721053

Seems a lot simpler (and cheaper) than purchasing another key. Anyone know about this?

Thanks in advance