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Haylands



Member Since: 04 Mar 2014
Location: East Yorkshire
Posts: 8509

England 2014 Range Rover Autobiography SDV8 Loire Blue
Sleeping battery....

Having an old L405, which JLR just don't care about, you have to do with other methods of making it hard to steal as no update is coming from JLR.

I've got a tracker and a separate immobilizer as well as a few other things which I'm not going into here...

I refuse to disable the keyless entry as I don't see why the scum should ruin my enjoyment of all the cars features...

I was looking into the sleeping batteries and the idea is excellent, shame you have to buy 2 for £95 and, according to a lot of info I read, they last about 3 months if you are lucky, then throw them away and buy another pair... That's £380 a year....!!!!

Anyway PowerfulUK to the rescue, they sell a wrap around for the key battery you use, and a faraday pouch for the spare. You buy it once at £55 and that's it...

I bought one a while ago and can confirm it works exactly as they say, to me it seems a no brainer to prevent relay theft.

I'm not saying this makes an early L405 unnickable but it helps....

This is what you get...




And this is where you get it from

https://www.powerfuluk.com/products/keyfob...amp;_v=1.0

I have no connection to PowefulUK apart from being a happy customer... Pete
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Post #714511 20th Mar 2025 6:43pm
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Haylands



Member Since: 04 Mar 2014
Location: East Yorkshire
Posts: 8509

England 2014 Range Rover Autobiography SDV8 Loire Blue

A slight word of warning with these and the battery ones as well...

Basically if you have the key in your pocket and you are sat waiting for your Mrs, the key will switch itself off and you have to do a little bum wiggle Shocked Whistle to get it going again to start the car.....

If you leave the engine running and sit still or have the key in the cup holder etc as you pull away it will bong and say "key not found"...

Not a big issue at all but it does get you when the bong of doom alerts you..... Thumbs Up Pete
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Post #715401 2nd Apr 2025 10:52am
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stan
Site Moderator


Member Since: 13 Jul 2010
Location: a moderate moderated moderator moderating moderately in moderation
Posts: 35598

United Kingdom 

are these batteries a gimmick or are they worth having.

surely switching off keyless entry is enough.. ... - .- -.




Y. O. L. O.
.

Post #715403 2nd Apr 2025 11:01am
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Haylands



Member Since: 04 Mar 2014
Location: East Yorkshire
Posts: 8509

England 2014 Range Rover Autobiography SDV8 Loire Blue

Stan,

Disabling keyless entry is one way of doing the same thing as these batteries, etc, do...

As I said above I'm not prepared to let the thieving scum dictate what features of my fatty I can use..

I love the keyless entry so don't want to turn it off...

These batteries, and part from Powerful, basically make the key unreadable after it switches off following three minutes of inactivity...

There is an argument that someone can read your key when they are close to you but I don't get close to that scenario so these work for me... Thumbs Up Thumbs Up Pete
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Post #715406 2nd Apr 2025 11:21am
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stan
Site Moderator


Member Since: 13 Jul 2010
Location: a moderate moderated moderator moderating moderately in moderation
Posts: 35598

United Kingdom 

didnt realise you like the keyless entry thing, having these batteries makes sense .. Thumbs Up ... - .- -.




Y. O. L. O.
.

Post #715414 2nd Apr 2025 12:42pm
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