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Key fob battery charger
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Albert0109
 


Member Since: 15 Aug 2012
Location: Sunny Essex
Posts: 404

England 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3
Key fob battery charger

With all of the intelligent people on here, has anyone come up with a means of
Charging your key fob up remotely (not in the ignition) Question Question
I wonder if you could use an electric toothbrush charging station or such like as these use
An inductive charging method Question
  
Post #9740006th Sep 2012 11:08 am
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dsd1036
 


Member Since: 27 Feb 2010
Location: Surrey
Posts: 2692

United Kingdom 2005 Discovery 3 TDV6 S Auto Zambezi SilverDiscovery 3

Hmm,

A rather innovative idea Albert Thumbs Up Not sure or heard of anyone doing this but maybe someone that loves a bit of electrickary such as "wiggs"can advise!

rgds

Darrell.

TBH,if you swap and use keys regular in the car,i think the keys with decent battery cells in are supposed to hold up for around 6 months
  
Post #9740346th Sep 2012 1:22 pm
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bookert
 


Member Since: 21 Nov 2005
Location: North East Somerset
Posts: 33

United Kingdom 2006 Discovery 3 TDV6 S Manual Buckingham BlueDiscovery 3

Funnily enough I was thinking of this myself today and in trawling the net for information I've come across your post. My car gets driven intermittently and can stand for several weeks, and after, it only gets short drives. I suspect both my keys have discharged and don't get long enough in the ignition to recharge in the car.

Did you ever try using a electric toothbrush charger to recharge the ignition key, and if so did it work?

I've been looking around for an off vehicle charging solution to keep the keys topped up. After a period on no use the key will not operate the remote locking, or possibly only if standing right next to the car. They start the car fine and after being in the ignition will operate the remote locking. To me its sounds like the batteries are discharged and never have long enough to recharge, hence looking for an off vehicle solution.

Tim
  
Post #110730522nd May 2013 6:54 pm
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DiscoDunc
 


Member Since: 08 May 2006
Location: Bristol
Posts: 16390

England 2010 Discovery 4 3.0 SDV6 HSE Auto Aintree GreenDiscovery 4

I never used my spare key on the D3 for 6 years, and when I did it worked fine.. so I cant see the problem - perhaps there is more fundamental issue with your keyfob Question
 Duncan
-----------------------------------------------------
If I'd known I was going to be so thirsty this morning I'd have drunk more beer last night.
FFRR Autobiography 4.4 SDV8 MY17
D4 HSE MY13 SOLD
FFRR 3.6 Vogue TDV8 SOLD
D4 HSE MY10 SOLD
D4 SE TECH MY15 SOLD
D4 XS MY12 SOLD
D4 HSE MY10 SOLD
D3 HSE MY06 - Re-Cycled Worldwide 
 
Post #110737522nd May 2013 8:35 pm
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bookert
 


Member Since: 21 Nov 2005
Location: North East Somerset
Posts: 33

United Kingdom 2006 Discovery 3 TDV6 S Manual Buckingham BlueDiscovery 3

Yes, its possible there is something more fundamental; there's several possibilities mentioned in the forum. Trouble is fault finding and intermittent problem can be a bit hit and miss.

As I said after the keys have been in the car they work fine...so long as I keep using them. After a few weeks of non use they don't unlock the car.

I'm sure there's a raft of possibilities, its just a case of hitting on the right one!
  
Post #110738022nd May 2013 8:45 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8223

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

I think a better investment would be new batteries, my spare key gets minimal use, some times as long as 6 months and then only on a short journey.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #110738822nd May 2013 9:13 pm
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Robjturner
 


Member Since: 11 Sep 2013
Location: Pattingham
Posts: 2

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Indus SilverDiscovery 3

I took my key apart to solder in a new battery bought from CPC.co.uk (£2.30)

Unless the battery is somehow induction charged like a toothbrush (which I doubt) then the key cannot charge the battery as the key blade is not connected to the circuit board !!

One thing ! Do I need to take the key to dealer to get it matched to my car ?
  
Post #115597311th Sep 2013 11:56 am
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Tufty
 


Member Since: 13 Jul 2010
Location: UK
Posts: 481

England 2009 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

It is induction charged. The coil I believe sits behind the plastic cover round the ignition switch.
  
Post #115597611th Sep 2013 12:02 pm
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Bushwanderer
 


Member Since: 27 Nov 2007
Location: Northern Rivers, NSW, Australia
Posts: 2050

Australia 2005 Discovery 3 TDV6 S Manual Buckingham BlueDiscovery 3

Rob,
It's best to not display your ignorance so confidently. Thumbs Up
 The Bearded Dragon  
Post #115629711th Sep 2013 11:34 pm
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Robjturner
 


Member Since: 11 Sep 2013
Location: Pattingham
Posts: 2

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Indus SilverDiscovery 3

Oh Censored !
My spare key was also dead which is the one I have replaced the battery in. It didn't even start the car despite turning the barrel.
Would I need to take it to dealer to have it remapped ?
  
Post #115634212th Sep 2013 6:42 am
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ChrissyboyD3
 


Member Since: 01 Apr 2012
Location: Stoneleigh, Surrey
Posts: 12

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Alveston RedDiscovery 3

Hi all. Great Forum with loads of useful information.
My spare key packed up altogether last week. I opened the fob and with a soldering iron replaced the VL2330 rechargeable battery, which has worked on previous occasions, but the fob still didn’t work. Completely dead.
I bought a £15 replacement form well known website with 433MHZ frequency and blank HU101 key blade. I swapped the blank blade with my spare (there are plenty of tutorials on YouTube showing you how to extract the blade locking pin). I connected my GAP IID app on iPhone with IID in the car and followed the Body Control / key programming process. It did take 2 attempts (probably operator error on my part) but on the second attempt everything worked, and I have a replacement spare costing £15 compared with humongous amount Jaguar Land Rover dealer would charge. On this and other forums there is discussion on how the fob battery charges up when inserted into the ignition, because if you open the fob up, there is no electrical connection between the key blade and the PCB. Apparently, the answer is that the Disco has an induction loop surrounding the ignition barrel which charges the fob battery in exactly the same way a cordless toothbrush is charged up. If you open the fob or check the attached pic, you can see on the PCB next to the blade pivot, a long black circuit device labelled L1 which would be the device closest to the ignition barrel. This I believe is the corresponding induction loop in the key fob, which absorbs the energy from the ignition barrel induction loop.
 All LED interior
IID 
 
Post #238054329th Oct 2024 3:40 pm
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HairyFool
 


Member Since: 04 Jan 2023
Location: North Essex
Posts: 672

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto ZanzibarDiscovery 4

When I bought my D3 it came with 3 key, one completely mullered and scrap, one a bit tired but worked.

The third needed a new case but the pcb itself looked ok. I bought a new case, swapped over PCB and key stem but the car was unresponsive.

Left it for a day sitting on the wifes toothbrush charger and it worked perfectly, opened doors at range and started the car with no errors. Still worked fine 9 months later but I did used to swap them about.

So I can say with absolute certainty that if the only problem is the battery then the toothbrush charger trick works.
 A visitor from the dark side, my other vehicle is an is still an EV. Strictly speaking its SWMBO.  
Post #238057729th Oct 2024 10:19 pm
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