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CatherineF



Member Since: 22 Nov 2014
Location: Wiltshire
Posts: 762

United Kingdom 
New Battery for Remote
The Battery in the remote has gone, so we have bought a new one. Hubby went out to try it and it's not operating. Any ideas, please don't tell me it needs re-setting at a dealer. 2015 Audi Q3 Quattro S Line Plus 184 TDI Stronic
2010 90 SMC Over Land Nero Edition - Santorini Black Metallic (Now Departed)
Post #424277 17th May 2015 7:54pm
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grafty99



Member Since: 15 Aug 2012
Location: North Devon
Posts: 4785

United Kingdom 2002 Defender 90 Td5 HT Caledonian Blue
I think you have to repeatedly press both lock and unlock together until it does something Thumbs Up 2002 90 Td5 Station Wagon
1990 Vogue SE
Triumph Tiger Explorer 1200
Td5 90 Thread http://www.defender2.net/forum/topic50767.html
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RRC Thread http://www.defender2.net/forum/topic54492.html
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Post #424283 17th May 2015 8:06pm
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558

England 
Just keep pushing the button til it works , sometimes 8 ish times just one button cant think if it matters which one

Last edited by munch90 on 18th May 2015 6:59am. Edited 1 time in total
Post #424284 17th May 2015 8:07pm
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Alien



Member Since: 18 Jan 2015
Location: Bacchus Marsh
Posts: 230

Australia 
The owners hand book has a section for the replacement procedure of the fob battery.
The gist of it is....
You have 5 minutes to do the change or you will need to enter the EKA code to synchronise the fob.

Procedure(basics)....
Insert key and turn to position II(ignition on).
Turn key to position O(Ignition off).
Remove the back of the fob and remove the battery.
Hold one button for minimum 5 seconds to drain any residual power in the fob.
Fit the new battery ensuring contacts are clean and polarity is correct.
Reassemble the fob.
From outside the car operate the LOCK button at least 4 times(this synchronises the fob).
Press unlock to unlock.
All done.


The above is from my Australian delivered unit but can't see why there would be a different else where.
I'd try doing the above before playing with the EKA codes.
Good luck and let us know how it goes. Cheers,
Kyle.
Post #424342 18th May 2015 4:21am
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Supacat



Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11018

United Kingdom 2013 Defender 110 Puma 2.2 XS DCPU Keswick Green
As above the LR one far more involved than others makes where you just change the battery and everything works!
Post #424483 18th May 2015 4:07pm
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ericvv



Member Since: 02 Jun 2011
Location: Near the Jet d'Eau
Posts: 5816

Switzerland 2009 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black
I replaced the battery once myself, took all together less than a minute, and everything worked thereafter as before from the first click, did not have to synchronise anything at all.
Now tell me, the fob itself does not have a memory I presume, so it will not remember that it has been briefly battery-less during the replacement. Maybe the reason why it was so trouble free with me was because I did the battery replacement far away from the truck. So if the fob itself has no memory as I believe is the case, the truck will never know.
Makes sense?
Eric You never actually own a Defender. You merely look after it for the next generation.
http://youtu.be/yVRlSsJwD0o
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Post #424500 18th May 2015 4:39pm
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stanley



Member Since: 18 Sep 2009
Location: Dorset /hampshire
Posts: 1032

United Kingdom 2011 Defender 110 Puma 2.4 USW Orkney Grey
Mine gets replaced at rather B service , I even get a reminder to take in the spare fob!
Post #424505 18th May 2015 4:58pm
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Lorryman100



Member Since: 01 Oct 2010
Location: Here
Posts: 2686

The fob needs to be re synced with the 10as whenever the battery has been removed. The reason for this is that each key fob that is learned to the 10as uses a rolling code as a defence against being cloned. When you remove the battery the fob loses this code and by pressing either button a number of times this re synchs the fob and 10as to the same rolling code. The number of times you press the buttons depends on how quickly the battery was replaced and whether or not another fob was used in the interim. FYI on the 10as 4 presses of lock is a full re synch as long as it has been enabled in the 10as settings menu with a diagnostic tool, (Plip presses for re synch)

If you look at the bottom of the below screen shot you will see that each fob has 4 rolling codes.


Click image to enlarge


Admin note: this post has had its images recovered from a money grabbing photo hosting site and reinstated Mr. Green
Post #424515 18th May 2015 5:35pm
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SteveK



Member Since: 21 Jan 2015
Location: Bromsgrove
Posts: 333

United Kingdom 2002 Defender 110 Td5 HT Rimini Red
ericvv wrote:
I replaced the battery once myself, took all together less than a minute, and everything worked thereafter as before from the first click, did not have to synchronise anything at all.
Now tell me, the fob itself does not have a memory I presume, so it will not remember that it has been briefly battery-less during the replacement. Maybe the reason why it was so trouble free with me was because I did the battery replacement far away from the truck. So if the fob itself has no memory as I believe is the case, the truck will never know.
Makes sense?
Eric


Never had to do anything other than press the buttons once or twice myself!
Post #424646 18th May 2015 10:13pm
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Supacat



Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11018

United Kingdom 2013 Defender 110 Puma 2.2 XS DCPU Keswick Green
stanley wrote:
Mine gets replaced at rather B service , I even get a reminder to take in the spare fob!


Just remember that they are charging you somewher ein the region of £8.96 for the batteries and labour at £2.00 a minute to do it!
Post #424701 19th May 2015 8:22am
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newhue



Member Since: 28 Apr 2014
Location: Brisbane
Posts: 351

Australia 
Um just wondering if someone has any further ideas. I have my immobiliser disarmed by land rover because of past headaches. I believe the alarm is still activated, and go goes off if a door is opened. I changed my battery today, well away from the car, and all within 1 minute. Of corse it did nothing when I went to try it.
So I have followed Alien's approach, and lorrymans, but still have nothing. I have no reason to think the replacement battery is flat, but I'm starting to wonder unless I have changed the 10as security system somehow. My Defender and travels


Last edited by newhue on 24th Sep 2015 6:49am. Edited 1 time in total
Post #456495 20th Sep 2015 7:58am
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newhue



Member Since: 28 Apr 2014
Location: Brisbane
Posts: 351

Australia 
phew, you can all stop panicking. New battery was the answer, the old new battery must have been stuffed. Nothing fancy with the installation, just swapped it over sitting in the car then pressed lock a few times on the fob and hey presto it came alive. Good thing really, using the key to lock and unlock the drivers door, the only one with a barrel was becoming a pain. My Defender and travels
Post #457665 24th Sep 2015 6:49am
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Djcla



Member Since: 29 Jul 2017
Location: Gloucestershire
Posts: 469

United Kingdom 
Anyone know what type of battery goes in these fobs?
Post #683004 30th Jan 2018 8:40pm
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Zed



Member Since: 07 Oct 2017
Location: In the woods
Posts: 3282

United Kingdom 2010 Defender 110 Puma 2.4 XS CSW Santorini Black
CR2032 in mine.
Post #683007 30th Jan 2018 8:51pm
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

^ Thumbs Up
Post #683008 30th Jan 2018 8:56pm
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