 | Home > Technical > Key fob, immobiliser, problem ? |
 
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| Scotm Member Since: 28 Feb 2014 Location: Aberdeenshire Posts: 672   
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If the horn sounds that could mean it is one of the door or bonnet switches showing as open?
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7th Jan 2021 4:47pm |
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| stew 46 Member Since: 26 Jan 2012 Location: Wadebridge ,cornwall . Posts: 561  
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But it do that if I’m trying to start it ? , I know it will if I'm Trying to lock her up .
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7th Jan 2021 6:07pm |
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| macfrank Member Since: 05 Nov 2015 Location: somewhere in the north Posts: 1098  
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Maybe just the fob's battery?
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7th Jan 2021 9:35pm |
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| Pat Member Since: 05 Dec 2016 Location: Somewhere new! Posts: 368 
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I have the same/similar problem.
I have two fobs: Fob 1. Works as it should. Fob 2. Works in the way described in the original post. I have tried and tried, but found no way of getting it to work as it should. I have just lived with it, but it is annoying. It started with a kiss, never thought it would come to this. SIII CSW Safari, limestone, (JAC 914N). Where is she now? It's not a car, it's a way of life! |
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8th Jan 2021 8:47am |
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| stew 46 Member Since: 26 Jan 2012 Location: Wadebridge ,cornwall . Posts: 561
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The most annoying thing is the horn going off twice every now and then and people think your trying to get there attention
The immobiliser lights flash different when it’s not going to start  |
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8th Jan 2021 9:21am |
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| ozy013 Member Since: 10 Feb 2014 Location: Melbourne Posts: 105  
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I had a similiar issue over Christmas, after returning from a Vic High Country trip. Car Battery is only 7 Months old and I replaced the fob battery when I serviced the Defender in November.
So I went to start the vehicle, dash lights came on, horn sounded once, but no start....nothing, not even an attempt to crank. Central locking was also not working, but would lock with the key. Put jump pack on battery, still no attempt to crank. Checked battery voltage, it showed perfectly healthy battery. Checked relays, and earth points, all good. Checked starter motor, when my mother tried to crank, there was no signal to the starter. It was then that I though  its the immobiliser or ignition barrel. However I always carry spare fob batteries, so I replaced the battery and hey presto up she fired. Hopefully your problem is as simple as changing the fob battery. I just figured that I must've had a dud fob battery since its was only replaced a couple of months prior.
I always replace both fob batteries once a year when I service the Defender. |
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9th Jan 2021 9:20am |
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| Julie Member Since: 07 Oct 2017 Location: Nantes Posts: 554 
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Did you rematch the fob with the ECM ? |
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9th Jan 2021 9:33am |
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| ARC99 Member Since: 19 Feb 2013 Location: North Yorkshire Posts: 1831  
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The Indy who service my 110 always asks for both fobs and changes the batteries annually. Last year I got the phone call to collet the vehicle , on arrival he said sorry it isn't ready I can't get the fobs to work and the vehicle won't start I have gone through twenty batteries and nothing changes and I don't know now which were the batteries that came out of the fobs. The batteries he had ben trying all came in a Land Rover blister pack. with a good expiry date. I sent SHMBO to a DIY store and told her to get some Duracell batteries, on her return he popped them in the fobs and just like magic they worked. Don't make old people mad.
We don't like being old in the first place, so it doesn't take much to us off.
Richard |
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9th Jan 2021 9:35am |
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| stew 46 Member Since: 26 Jan 2012 Location: Wadebridge ,cornwall . Posts: 561
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No I didn’t , is there a process ? Stew |
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9th Jan 2021 9:44am |
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