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Immobiliser key fob code #648742
05/07/20 10:31 AM
05/07/20 10:31 AM
Joined: Jun 2012
Posts: 1,395
United Kingdom, Lincolnshire
planenut Online NoMood OP
Has a lot to Say!
planenut  Online NoMood OP
Has a lot to Say!

Joined: Jun 2012
Posts: 1,395
United Kingdom, Lincolnshire
I have recently found out that the standard fit M3W immobiliser key fob can loose its code if not used periodically, there is no battery in the fob. A spare key fob that had not been near the car for a year or so was tried and wouldn't deactivate the immobiliser. The fob normally used to start the car worked fine.

The supplier was contacted and was more than happy to replace the fob for about £50. Not so much an issue if you have lost or damaged one but there was nothing physically wrong with it. Eventually they conceded that the fob could loose its code if not used occasionally and that it could be re-coded from the transponder under the steering cowl. There is a rather involved procedure for this that I can pass on if you PM me, it will be on the MTWC website soon. You do need to have at least one working fob for this to work. I suggest it would be a good idea to use all your fobs to start the car every 3 or 4 months.

If all this fails you can always remove the immobiliser from the system by making and fitting an immobiliser jumper plug, as detailed on page 66 of the M3W parts list Ver 5.2 item C-47 on the RH side. You will also need an AMP Multilock 070 12 way male plug and pin set. Morgan could supply these at one time but don't seem to be able to now. I got my plug from www.simtekuk.co.uk and they were very helpful. With the jumper fitted the immobiliser is out of the system, handy for diagnosis as well as a small, light item to carry in your spares bag that may just come in useful one day?


Last edited by planenut; 05/07/20 10:34 AM.
Re: Immobiliser key fob code [Re: planenut] #648752
05/07/20 11:23 AM
05/07/20 11:23 AM
Joined: Feb 2019
Posts: 2,399
Port Orchard, WA.
LightSpeed Offline
Talk Morgan Expert
LightSpeed  Offline
Talk Morgan Expert

Joined: Feb 2019
Posts: 2,399
Port Orchard, WA.
Glad I did not get the Immobiliser.


Stephen
2019 M3W piling on the Covid miles

Re: Immobiliser key fob code [Re: planenut] #648757
05/07/20 11:43 AM
05/07/20 11:43 AM
Joined: May 2011
Posts: 1,209
Near Windsor Berkshire
R
Rog G Online content
Has a lot to Say!
Rog G  Online Content
Has a lot to Say!
R

Joined: May 2011
Posts: 1,209
Near Windsor Berkshire
Had me worried for 5 minutes, I have never used my spare key in 7 years, started car OK though.


2013 M3W
1971 4/4 2 Seater
1934 Sports
Re: Immobiliser key fob code [Re: Rog G] #648764
05/07/20 12:26 PM
05/07/20 12:26 PM
Joined: Jun 2012
Posts: 1,395
United Kingdom, Lincolnshire
planenut Online NoMood OP
Has a lot to Say!
planenut  Online NoMood OP
Has a lot to Say!

Joined: Jun 2012
Posts: 1,395
United Kingdom, Lincolnshire

Well they didn't say it would loose the code, just that it could. Just nice to know that they can be re-programmed if they do fail. This wasn't actually my car, both my fobs worked OK as well but I have heard of a few that have died.

Re: Immobiliser key fob code [Re: planenut] #648789
05/07/20 02:29 PM
05/07/20 02:29 PM
Joined: May 2012
Posts: 1,586
Gods own county! Oop north
D
Dab of oppo Offline
Talk Morgan Enthusiast
Dab of oppo  Offline
Talk Morgan Enthusiast
D

Joined: May 2012
Posts: 1,586
Gods own county! Oop north
+1 LightSpeed, it was just something else to go wrong. Who is going to steal it anyway.


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