2005 mazda 3 key fob programming

Q: How do I program my Mazda 3 key fob?

Heres How To Reprogram Your Key:.

Joined Nov 20, 2018

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Reprogram Your Mazda FOB
How do I program my Mazda 3 key fob?
How do I program my Mazda 3 key with only one key?

25 Posts

Discussion Starter · #1 · Dec 31, 2018 (Edited)

NOTE: This is an issue with the KEY FOB only. There is no "key chip" for my model AFAIK, this is not the "switchblade"-type key and fob but the separate fob and key.

Car: 2006 Mazda3 s Hatchback (base model)

Problem: I purchased a second (used) key fob (I only had one). Same model (Visteon Model 41846), same FCC ID, same IC. Then I followed the instructions (and several variations) that I found online ("http://www.programyourremote.com/c...-programming-instructions-listing-6770.aspx"]) as follows:

2006 Mazda 3 Keyless Entry Remote Fob Smart Key Programming Instructions

1. Close all doors, open drivers door, key out of ignition.
2. Lock and Unlock the drivers door using the power lock switch on door panel.
3. Insert key into the ignition.
4. Turn key to the ON and OFF position 3 times in 10 seconds. Leave key in ignition.
5. Close and open drivers door 3 times ending with door in the open position.
6. Door locks should respond by locking and unlocking.
7. Press any button on remote 2 times. Doors should then lock and unlock.
8. If programming a second remote press any button on it 2 times and door locks should lock and unlock.
9. Remove key from ignition and locks should lock and unlock again.
10. Test Remotes

However, I cannot get the new (used) remote to work. I have tried it with two batteries (and voltage tested both of them) and slightly bent up the contacts inside the remote to ensure good, er, contact with the battery, I have tried doing the new (used) remote before doing my existing remote, nothing seems to work.

I have a multimeter (that I don't really know how to use)--is there anything inside the remote to check and how do I do that? Or do I just hit the ripcord and contact the seller for a refund? I only paid $17.95 but the seller said the unit was in "good working order" (Ebay-speak, amiright?).

Joined Mar 15, 2018

31 Posts

Bump also having the same exact problem 2005 mz3 s hatchback except mine doesn't go into programming mode (automatically locking and unlocking) letting me know it's ready for the key fob.
Any help would be appreciated

Joined Nov 20, 2018

25 Posts

Discussion Starter · #3 · Jan 16, 2019

FOLLOW-UP:

I returned the key fob I bought and purchased another one from a different seller on Ebay -- yourkeylessremote -- for a whopping $8.99.

I had it programmed in about 15 seconds and it works great. It has the original IC chip inside a new case. If you need one (and the seller has remotes for all kinds of other Mazdas, etc.), I highly recommend them.

Losing the keys to your Mazda 3 can be a bigger ordeal than you may realize. Lost keys can even end up with your Mazda being towed to the local dealership - then on top of that having to pay them to program a new set of keys. Ironically, that could mean that if you do find your old keys, they will not work since the dealership reprogrammed your car. Between the towing and the reprogramming, losing your keys is hardly an inexpensive ordeal. It may be best that you know how to reprogram your own keys to your Mazda.

In order for you to have a spare key that will start the car, you need to start with two working keys -- or you will have to take the car to the Mazda dealership. This keeps unauthorized people from making copies of your keys. Many people recommend that you have three working keys to start off with just to be able to reprogram the keys if needed.

Here's How To Reprogram Your Key:

Place the first working key into the slot. Set the ignition to the ON position. Leave it in for five seconds, and then remove the key.
Repeat with the second working key.
Place the new or spare key into the slot. Set the ignition to the ON position. Leave it in for five seconds, and then set the ignition to the OFF position. The new key has now had its information added to the vehicle’s computer and will allow it to start the car in the future. Test it before you put the key away.

Reprogram Your Mazda FOB

In order to begin, you need all of the FOBs that you would like to enable for your vehicle. There is a three FOB limit set by Mazda, so only program up to three.

Start by opening the driver’s side door.
Use the lock button to lock and unlock the door and leave the door open.
Place your key in the ignition and set it to the ON position. Wait two or three seconds before turning it off. Do this two more times for a total of three times. Do not remove the key. You want to leave it in the slot in the OFF position.
Next, you need to shut the driver’s side door. Then you will open it, shut it, open it, shut it and then open it again. You will shut it and open it a total of three times.
Next, the vehicle’s computer will lock and unlock the doors. When you hear the doors lock and unlock, you know you have done this correctly, and the vehicle is ready to accept the programming for the FOB.
In order to program it into the computer, you must press a button on each FOB unit.
When you have completed the programming of the FOBs, you can remove the key. The computer will send the door locks through their cycle again.

All of these programming tasks can be done in under a few minutes without the tow bill. If these things do not work, you may need to take your vehicle to your local dealership. And if you're having other problems with your Mazda keys, check out this blog post for more info.