travman1974
Member
Anybody know if it's possible to use the advanced key fob with two cars? We have a CX-5 already and will be getting the new Mazda3 soon, it would be great if I could use the same fob for both cars.
Advanced Keyless System Fob in two cars?
- Thread starter travman1974
- Start date
TerryFrench
Member
- :
- Mazda, Mazda 3 S Grand Touring 2014 / Tech package
With all these remotes, the car is programmed to recognize the keys. So it *might* be possible for the dealer to add your key(s) to this car, the same way a replacement key could be added if you were to lose it. This could cost $ and there's likely a max number of keys the car is made to recognize. (I'd say 3 minimum)
Clarifying my post.
The key transmits some code. Maybe a rotating code, maybe a constant code. In either case, the car is programmed to recognize that code (or rolling code) as a valid key. The key itself always does its thing and is not programmed in any way. Only the dealers can program the car, UNLESS this car has a user sequence that can be used. When it's available (like to program RFID keys on some GM cars) it's something along the lines of: use key #1 (normal key already programmed) to turn on ignition but not start the engine. Then turn off, then bring key #2 (normal key) and do the same, then bring new key, do the same. All that within a specific period of time, sometimes with "wait 15 seconds between step n and n+1"... Someone with a factory / dealer manual should be able to find the info to program a new key. And it's either something you can do yourself like that, or the need to connect a diagnostic tool with codes only the dealer has.
Note that the DIY sequences always require at least one good key, to prevent thieves from programming their own key. i.e. if you already have one valid key, you are not stealing the car.
Clarifying my post.
The key transmits some code. Maybe a rotating code, maybe a constant code. In either case, the car is programmed to recognize that code (or rolling code) as a valid key. The key itself always does its thing and is not programmed in any way. Only the dealers can program the car, UNLESS this car has a user sequence that can be used. When it's available (like to program RFID keys on some GM cars) it's something along the lines of: use key #1 (normal key already programmed) to turn on ignition but not start the engine. Then turn off, then bring key #2 (normal key) and do the same, then bring new key, do the same. All that within a specific period of time, sometimes with "wait 15 seconds between step n and n+1"... Someone with a factory / dealer manual should be able to find the info to program a new key. And it's either something you can do yourself like that, or the need to connect a diagnostic tool with codes only the dealer has.
Note that the DIY sequences always require at least one good key, to prevent thieves from programming their own key. i.e. if you already have one valid key, you are not stealing the car.
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