key Fob issue

Hello all....anybody had issues with the key fob like i have now ?
My Landy Defender TD5 90 1999MY has within the last day or so developed a problem with the key fob....symptoms are...Unlock the drivers door, climb in, key to position 2 ready to crank the engine, turn to crank the engine and Red alarm lamp shows up on the cluster, horn beeps twice and the engine does NOT crank !!
So.....if i press the unlock on the key FOB one time only, she beeps the horn and then i can crank the engine and she starts as normal. Ive tried removing the battery for a new one and "pairing" to the vehicle and this worked as it should but the problem still exists? The FOB was repaired a year ago by one of the "on-line" repair services and apart from having to "pair" it to the car when i got it back it's been working fine. All i can think is i did drop the keys the other day on a hard surface but i wouldn't have thought that would have caused the issue?
I have tried the spare FOB for the Landy and this works as it should, so.... "Yes" it does point to a faulty FOB !! Before i go throwing money on repairing the FOB again, has anybody seen this problem and solved it?

If it is the fob with two side by side buttons then the battery holder can suffer from dry joints which can cause intermittent operation issues. There are three solder connections that hold the battery holder to the pcb but they also form part of one of the connections. Not sure if that would cause your issue but they may have been damaged when you dropped it. With the covers split and the battery removed make sure that the three solder joints are secure (no movement at all), if there is movement in any of them then resolder all three joints. HTH

OK....thats a new one for me...i'll try resoldering them...Thanks.

I had this fault with my 2005 TD5 Defender and bizarrely it was a failed return spring in the ignition switch.

Kwakerman said:

If it is the fob with two side by side buttons then the battery holder can suffer from dry joints which can cause intermittent operation issues. There are three solder connections that hold the battery holder to the pcb but they also form part of one of the connections. Not sure if that would cause your issue but they may have been damaged when you dropped it. With the covers split and the battery removed make sure that the three solder joints are secure (no movement at all), if there is movement in any of them then resolder all three joints. HTH

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100% correct diagnosis....one of the battery holder legs had detached /snapped from the circuit board...just finished resoldering it (leg snapped off so impovised), thank you for your help and hope this write up may help another owner in the future.......TS

smithtrevor said:

100% correct diagnosis....one of the battery holder legs had detached /snapped from the circuit board...just finished resoldering it (leg snapped off so impovised), thank you for your help and hope this write up may help another owner in the future.......TS

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No probs