What type of key do I have?

Technical Area Electrics & ICE
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  1. My model of MX-5 is: 2005 NB
  2. I’m based near: Dorset
  3. I’m looking for technical help or recommendations on: keys

After reading several threads here I’m confused (easily done at my age…)

My car only has one key:

20210717_133421
20210717_1334213264×2448 2.14 MB

Does this have a chip in it, or can I just buy a blank and have it cut by somewhere like Timpsons?

The car has central locking and I can hear a squeak under the bonnet when I lock it which I presume is the alarm/immobilizer.

Thanks in advance :blush:

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Message removed by me - Countryboy - in the light of the post by Barrie - Bettabuilda. :thinking: :smiley:

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Rhino666 is your man :+1: I ‘think’ there is a chip embedded in the key that is read by a ring around the ignition barrel? No need for a battery then, central locking by key rather than button, immobiliser set once key removed from ignition? I too Roger, stand to be corrected though :joy:

Barrie

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Ah! Thanks Barrie! :+1:
I duly stand corrected! :nerd_face:
In fact I’ll remove my post! :smiley:

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Spot on Barrie.
This is a late MK2.5 original Mazda key with imbedded transponder chip.
Car is a 2004/5 MK2.5 with rolling security, so every time the ignition is cycled with the key, data on the chip and associated data held on the immobiliser is updated.
Transponder chip is a quite obscure Temic Crypto 8c. A new chip will need to have data and be programmed to your ecu/immobiliser. I can do this;
Terry, message me if you are looking to add another key that will start your car as well as operate locks/ignition.

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Edit: see below…

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Thanks will do!

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I can confirm that its most likely inside the key itself as I recently had issues with the key on my 2008 3 MPS, which with being a similar era car I’d imagine the keys don’t differ too much, the issue with mine ended up costing a pretty penny as I got 2 new keys from mazda and they had to programme them to the car themselves.