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Old Oct 18, 2006 | 10:27 PM
  #1  
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ady4526
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Default 2 fobs into 1

I have my key with the remote central locking on 1 fob and another fob for my cobra alarm

Anybody know if I can get it all onto 1 fob

ta Ady
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Old Oct 20, 2006 | 10:11 AM
  #2  
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Are you saying that the cobra alarm doesnt operate the central locking ?
Most scoobies use the sigma alarms, these not only operate the central locking, but you can buy a remote which clips into the top of the key, makes for a totally standard look.
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Old Oct 24, 2006 | 11:48 AM
  #3  
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From: Sigma Technical
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From 2001 the vehicle's central locking control was built into the ignition key. This "2 button" ignition key is still used on non-UK vehicles and is designed solely for convenience to lock/unlock the doors, with little thought to security. It does not utilize the necessary random encryption transmission required by Thatcham to switch a Category 1 alarm system.

When this "2 button" ignition key was first introduced in the UK a separate Sigma Radio Key was supplied to securely switch the alarm system and meet Thatcham approval (any euro imports with an aftermarket Cat 1 should also have a separate radio Key - such as your Cobra system)
The batteries were deliberately removed from the early UK "2 button" ignition keys to prevent them from working - if the vehicle were locked with the separate Radio Key and then unlocked with the "2 button" ignition key the vehicle would unlock, but with the alarm still armed, leading to a trigger when the door was opened and then confusion over which button to press!

For convenience on UK vehicle's from 2001 the Sigma Radio Key's transmitter was redesigned to fit inside the Subaru ignition key housing, whilst retaining the necessarry Thatcham encryption.
As the Sigma transmitter utilizes a single button to both lock/unlock the vehicle, a new top section for the ignition key was manufactured in the UK for the single button.

If you have an early 2001MY UK car (with a "disabled" 2-button ignition key and the separate Sigma Radio Key with the Blue Subaru decal) or an import with a Sigma M30, then the re-designed Sigma transmitter and single button key housing can be purchased from Subaru and programmed to your system.
The part number is SACC 3507 for these parts and should cost around £40.
Don’t pay over the odds for programming, as this can be done yourself using the keypad in a couple of minutes, provided you have the system's PIN code or an existing working Radio Key.

With regard to other aftermarket alarm systems, such as your Cobra system, there are Thatcham approved variants that are designed to be switched from a vehicle’s original equipment transmitter, but their Thatcham approval is granted only on the understanding that they are fitted to vehicles whose existing transmitters have secure encryption that has been tested to Thatcham's specification.
However, as most manufacturers (Subaru included) now use transponder technology to switch their standard immobiliser systems, there is no need for them to produce an encrypted transmitter just to operate the vehicles locking - there are no requirements in this area.
Any alarm system fitted to an imported Subaru that arms/disarms from the original "2 button" ignition key will no longer be Thatcham approved as the transmission is susceptible to code scanning and grabbing.

On a separate note, there are also aftermarket Thatcham 2 to 1 upgrade alarm systems that are designed to be fitted to vehicles with an existing Category 2 immobiliser, but their Thatcham approval is granted only on the understanding that they are fitted to vehicles whose existing immobilization system carries Thatcham Category 2 approval.
Unfortunately, the standard Subaru transponder immobiliser has not been tested on its own by Thatcham and so does not carry Category 2 approval.
Any Thatcham 2 to 1 upgrade alarm system fitted to an imported Subaru that utilizes the existing Subaru transponder immobiliser will no longer be Thatcham category 1 approved.

I hope that may have explained things, rather than confuse you further!
In short, if you have an imported vehicle:

1. Ensure you have a full Category 1 alarm system with two circuit passive arming immobilisation fitted - not a 2 to 1 upgrade.

2. Ensure your system is armed/disarmed by a separate Radio Key (only the Sigma M30 can be armed/disarmed from the built-in "single button" UK ignition key) – not from the original “2 button” type

If you need a Thatcham Category 1 alarm but dont want a separate remote in addition to the existing key, then a Sigma system is the only way to go. You have two options:
A. If you can find a Sigma M30 in the after market (not the newer S30 - as the transmission encryption is different) then this can be installed and then you can purchase the parts to build the transmitter into the ignition key from a Subaru dealer (see above text).
B. The Sigma S30 superceded the M30 sometime ago now, so this is the latest specification system with additional outputs and features such as Key Theft Protection etc. This sytsem will become standard fit to UK Subaru models from 2008MY and, although not currently available from a Subaru dealer, similar transmitter parts will be available from summer 2007 to enable the transmitter tio be integrated into the ignition key (the transmitter PCB is different for the S30 system, although the key housing shape will remain the same for 2008MY UK vehicles). Provided that you can make do with a separate Radio key for 6 months or so, then this is the best option.

As ever, maybe a little more in depth than you'd hoped, but I hope that explains the situation.

SS

Last edited by Sigma Sam; Oct 24, 2006 at 11:52 AM.
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Old Oct 24, 2006 | 02:04 PM
  #4  
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Sigma Sam is Back!!!!!
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Old Oct 24, 2006 | 06:06 PM
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False Advertising Sigma-sam. tsk tsk

Sigma is not the only company to offer remote controls that can have a key built into them.

Clifford have a remote available for the Concept 650 and Intelliguard 950 that allows you to fit a key into it. It can be seen on this image: http://www.clifford.com/uk/images/gp1000t.jpg (its the upper out of the 2 remotes)

It is the same remote that is shipped with the Cat1 bike alarm.

I am sure that i have seen a similar idea from Meta or Gemini.

Last edited by evolutionice.com; Oct 24, 2006 at 06:09 PM.
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Old Oct 24, 2006 | 06:23 PM
  #6  
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Holy **** !!!! that was an answer and then some- cheers dude
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Old Oct 25, 2006 | 10:28 AM
  #7  
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From: Sigma Technical
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Originally Posted by evolutionice.com
False Advertising Sigma-sam. tsk tsk

Sigma is not the only company to offer remote controls that can have a key built into them.

I am sure that i have seen a similar idea from Meta or Gemini.

Ok, I'll clarify further...

The Sigma transmitter is the only one designed specifically to fit within the the existing, original, Subaru ignition key.
This is because we work directly with Subaru Japan during vehicle development and have to adapt our systems for Original Equipment fitment.

Other alarm manufacturers may offer a "universal" remote into which a keyblade can be inserted, but where the key-blade is moulded into the original key housing (as is the case with Subaru and most manufacturers) these "universal" remotes require the key-blade to be cut out of the original housing and then fixed inside their remote housing, along with the transponder chip.
I can't comment on any of the brands that you mention, but the usual problem is that certain manufacturer's key-blades can be located more reliably than others.
From working with the Subaru ignition key, there is very little "T" within the moulding and it would be a difficult blade to secure reliably and offer anything like the same level of durability as the original Subaru key

Due to the universal nature of these aftermarket remotes, the finished item is usually larger to allow for a secure fixing and to accomadate any number of key-blade and transponder types.
Additionally, the finished "universal" remote will not have been submitted for testing to ensure that it conforms to EC directive 2000/4/EC relating to the safety of interior fittings.

It is another option I suppose, but not to the same standard as using the existing ignition key housing.
Always the customers choice however.

SS

Last edited by Sigma Sam; Oct 25, 2006 at 10:04 PM.
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