Mazda RX-8 Lost Car Key Replacement – All the Information You Need to Get a New Mazda RX-8 Key. Tips, Costs, Your Options, and More.
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In this article:
Mazda RX-8 model was introduced in 2004. This model has two types of keys.
Remote key fob: 2006 to 2010.
Transponder chip key: 2005 to 2011.
- Please keep in mind that while some keys or key fobs may look the same, they have different capabilities/frequencies/keyways. Therefore, having the right key or key fob is essential.
- Already have your key? Need information to guide you through programming your Mazda RX-8 key fob or transponder key?
Quick access or go to FAQ
Click on the type of key you had or your year model below to get the most accurate information:
Mazda RX-8 w/Prox:
2006, 2007, 2008, 2009, 2010: (BGBX1T458SKE11A01)
Mazda RX-8 w/o Prox:
2005, 2006, 2007, 2008, 2009, 2010, 2011: (KPU41788)
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Q: I lost my Mazda RX-8 car keys. I don’t have a spare, so need a replacement. How and where can I get a replacement key?
Generally speaking, you have three options:
- Call an automotive locksmith that offers a mobile service for Mazda RX-8 cars. We can help you with that.
- Tow the car to the dealer.
- Order a key online and have the dealer or locksmith cut and program it for you (if necessary).
A word of caution: The type of key you need depends on the year and model of your Mazda RX-8. Therefore, the options for getting a new key made and programmed depend on whether you need a remote, an intelligent fob, push to start button, a transponder, or a regular key.
A: For a more detailed explanation, including tips on SAVING TIME AND MONEY, please visit our blog post: How to get a replacement key.
Not ready to call for service just yet? Click here for some GREAT ideas on how to find lost car keys.
Q: Mazda RX-8 key replacement near me – How to find a locksmith or dealer and what should you tell them?
First, make sure you have the exact year, make, and model, e.g., 2011 Mazda RX-8.
In addition, write down the VIN (Vehicle Identification Number) of the car located on the left side of the dashboard near the mirror. The VIN helps the locksmith or dealer verify the year, make, and model of the car and determine which key you had.
Also, keep in mind that many locksmiths offer mobile service and travel up to 30 miles radius from where their store is located. Therefore, depends on your location, it might be a good idea to expand your search and call for a few additional quotes, even if on the map, these locksmiths seems to be far from you.
Their distance as you see on the map, is their business address, not their physical and current location. All you have to make sure, is that they carry the right equipment to cut and program your Mazda RX-8 key.
You can also try and call a few Mazda dealers near your location, but remember that you will need to tow the car there.
Finally, make sure you can show ownership of the car by having the necessary documents – title, ID, insurance card, etc.
Q: Mazda RX-8 key replacement cost – How much does it cost to replace a Mazda RX-8 key without the original? What is the average price?
In short, replacing a Mazda RX-8 key can cost between $170 to $320. The cost depends on a number of factors:
- The type of key you need
- The car’s year of manufacture
- Time of day & your location
- Where you get a key replacement (dealer, automotive locksmith, online, etc.)
- Availability of code to cut a new key
- Original ignition or not
The type of key you had and the year the car was manufactured are the most important factors for identifying if you need a chip, intelligent fob, “push to start”, remote, regular “non-transponder” key. The newer the car is, the better the security features the key has. On later models, you can therefore expect to pay more than $250 for a replacement key.
the price depends on where you get a key replacement. Did your replacement key come from the dealer, or an automotive locksmith? Or did you get it online? Click here to get a more detailed explanation of how to get a replacement key.
The dealer usually charges about 10% to 15% less for the replacement key than a locksmith would charge. However, you will likely have to tow the car there to program the new key or remote. Therefore, the total price is usually higher.
consider that if you have a locksmith come out and make you a new key outside regular business hours, the price may increase.
If you have previously had your ignition cylinder replaced, which is quite common in older cars, this probably means that the code for the key may not be useful. In such cases, the key will have to be cut manually by a locksmith, or you will have to change the ignition again, and here the dealer can’t help.
For a more detailed explanation and GREAT TIPS on how to save money, please visit our blog post: Car keys replacement costs
Tips for Mazda RX-8 key fob replacement – What to ask and verify before and after you get a new key fob:
Very often when people get a replacement key fob, there are certain things they forget to check and ask the dealer or locksmith.
We gathered here the most relevant information and tips to make sure you won’t face a problem down the road.
Make sure to get the key code of your Mazda RX-8 key fob – Every key fob, has a unique code which locksmiths and dealers use to know the exact cuts to match your ignition, door and trunk cylinders.
Obviously, this code is different from one car to another. This key code costs money, and before the locksmith or dealer cut you a new key fob, they must pay to get the code from the Mazda database, which may cost them up to $100. Make sure you write down this key code and keep it in a safe place. In case you lose your Mazda RX-8 key fob again in the future, it will cost you less to get a replacement, and the process will be faster.
Verify they cut you the emergency key, and that it works on the doors cylinders and trunk – Every key fob comes with an emergency key attached to it. The emergency key can be used to access the car in case the battery is dead.
Sometimes, when locksmiths or dealers program a new replacement key fob, they forget to cut the emergency key as well.
Make sure they cut you the emergency key and that it works for each door and the trunk to avoid a future lockout situation. It should work smoothly, just like your house key. Don’t be lazy, check it on site.
know which battery your Mazda RX-8 key fob has – These key fobs, like all key fobs, are battery operated. Make sure you know the type of battery you need and keep a spare one. (Mazda RX-8 key fob usually use CR-2025 battery)
Q: Can I get a Mazda RX-8 key replacement by its VIN?
A: That depends on the year of manufacture of your car and the type of key you had.
The VIN gives dealers or automotive locksmiths the option of accessing the key code on file – i.e., to cut you a replacement key by code which makes the process fast and easy. There are however two things to consider:
- If your vehicle is older than 10 years, Mazda dealers will no longer have its key code record, so an automotive locksmith will be your only option to get a replacement key.
- For vehicles equipped with a transponder system and/or a remote/intelligent key/fob key, the codes should be available. However, as coding is required, you will have to either tow the car to the dealer, or have an automotive locksmith come and code the key on site.
Q: Mazda RX-8 key programming – which keys can you program yourself? Which keys require a programming tool? & more
A: Mazda has different types of keys. Some require programming, and some don’t. All transponder chip keys and/or smart key fobs need to be programmed. This process requires a special programming machine that only an automotive locksmith or the dealer has. There is no need to program non-transponder metal keys.
To make things simple, we divided all Mazda keys into two categories:
- No programming needed (Non-transponder keys).
- Keys that need to be programmed (Transponder or remote keys). These keys required the expertise of an automotive locksmith or the dealer.
No programming needed:
Mazda non-transponder keys are metal keys that have no chip in them, so no programming is needed.
Mazda RX-8 has none of this key type – all Mazda RX-8 keys have a chip and need to be programmed.
For Mazda RX-8 keys that need to be programmed, you will need an automotive locksmith or the dealer:
These keys, also known as remote smart keys, intelligent keys or key fobs, and transponder keys, have a security chip. Programming is needed. Also, a special machine is needed to program them. An automotive locksmith or dealer should do it for you. This process must be followed for most models made after 1998.
Q: I have a Mazda RX-8 key and would like to get a keyless entry system to unlock all doors as well. Can you tell me which one I should get? Will it need to be programmed and can I program it myself or not?
A: Mazda RX-8 has a few keyless entry system options. For newer car models, the key you have contains a built-in keyless entry system (a remote master key or key fob/smart key). Some need to be programmed by a professional locksmith or dealer and some don’t. Below you will find all the information relevant to the Mazda RX-8 entry system.
Keyless entry information for the Mazda RX-8:
Mazda RX-8 has two keyless entry remotes. Choose the year of your car:
For year models 2005 to 2010, there is a built-in keyless entry in the remote key fob and transponder flip key.
2004-2005: KPU41805 (Choose Method B)
Mazda RX-8 key battery – important information: How to replace, size, cost, and more.
Mazda RX-8 model has different kinds of keys. If your model uses a key fob, here is some important information you should know about the battery.
There are 2 types of keys that are battery operated:
Key fob: (like in the picture below)
Transponder flip key: (like in the following picture)
Watch a short video here: how to replace Mazda RX-8 transponder flip key’s battery, type of battery and more:
Things to remember when your Mazda RX-8 key fob battery is dead:
First, even if the key fob’s battery is dead, you still can unlock and start your RX-8. You can use the emergency key provided with the key fob to unlock the doors as shown below:
How to start Mazda RX-8 with a dead key fob?
You can start your Mazda RX-8 by pushing the “Start” button with your key fob. The car’s computer recognizes the chip inside the key fob and authorizes the process.
This way, you will be able to start your vehicle EVEN if the key fob battery is dead.
Mazda RX-8 key battery information:
Mazda RX-8 key fob and transponder flip key are battery operated. Every two years or so, or when the battery is low, you may need to change the key fob battery. Here is all the information you need.
The type of battery you need is a CR-2025 for BGBX1T458SKE11A01 and a CR-1620 for KPU41788. The average price for these batteries is about $5.
Also, you can find it at Home Depot, Walmart, AutoZone, etc.
Here is some general information about the Mazda RX-8 key battery:
Type of battery: CR-2025 lithium
Size: Diameter – 20 mm, height – 2.5 mm
Type of battery: CR-1620 lithium
Size: Diameter – 16 mm, height – 2.0 mm
Finally, remember that your battery life depends on several factors such as usage, weather conditions, etc. To better protect your Mazda RX-8 key fob and extend its battery life, it may be a good idea to have a key fob cover or a case. You can order a key fob cover here.
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