Immobiliser ‘key’

Moderators: theelanman, dapinky, Dave Eds, Nige, DaveT, Sy V, Elanlover, muley, Enright, algirdas, nitroman, clemo, Specky, GeoffSmith

Immobiliser ‘key’

Postby AllenG » Fri 26.07.2019, 11:35

Hi guys. Been enjoying the lotus in this fine weather, however becoming paranoid that I only have one immobiliser ‘key’. Does anyone know if I can buy a second one or if there is a way to do some thing which removes the need for it. Worried that if it gets lost I’m stuck!. It’s the type that you plug into a hole near the ignition switch then remove and start the car with the ignition key. It looks like a jack plug.
Last edited by AllenG on Fri 26.07.2019, 18:32, edited 1 time in total.
AllenG
Newbie
 
Posts: 14
Joined: Tue 11.06.2013, 12:06
Location: Ayr, Scotland

Re: Immobiliser ‘key’

Postby RonR » Fri 26.07.2019, 11:48

If it's the standard S2 alarm, have a look at AVS-Gemini Here
User avatar
RonR
Enthusiast
 
Posts: 147
Joined: Mon 22.08.2016, 20:25
Location: Bromley

Re: Immobiliser ‘key’

Postby AllenG » Fri 26.07.2019, 13:38

Thanks RonR, none of those. This seems to be an immobiliser ‘key’, I have a separate alarm key. Have tried to upload a photo of the ‘key’ but file too big. As I said, it looks like a jack plug similar to what would be on older headphones or for plugging an electric guitar into the amp, with a little plastic key fob, no battery needed.
AllenG
Newbie
 
Posts: 14
Joined: Tue 11.06.2013, 12:06
Location: Ayr, Scotland

Re: Immobiliser ‘key’

Postby Brit-Car-Nut » Fri 26.07.2019, 16:28

Here is a picture of his key:
Immobiliser-key.jpg
You do not have the required permissions to view the files attached to this post.
Please contact me via eMail, not by PM
Lotus Manuals
Brit-Car-Nut
God
 
Posts: 4552
Joined: Tue 03.07.2007, 17:07
Location: Charlotte, NC USA

Re: Immobiliser ‘key’

Postby John_W » Fri 26.07.2019, 23:21

Where did that come from? Never seen one of them in me puff. Is it an S2 thing.
John
User avatar
John_W
Heid-bummer
 
Posts: 3780
Joined: Mon 21.04.2003, 12:31
Location: Aberdeen

Re: Immobiliser ‘key’

Postby woody » Sat 27.07.2019, 06:25

No, not an S2 thing. Must be a custom made immobiliser. We used to fit similar immobiliser keys to Landrovers, when we used them underground in Gypsum, and Potash Mines.
Cheers,
Woody
User avatar
woody
Fanatic
 
Posts: 455
Joined: Thu 04.03.2004, 17:38
Location: Nottingham,UK

Re: Immobiliser ‘key’

Postby Saltire » Sat 27.07.2019, 07:23

This isn’t an SE or S2 standard fit ‘key’; I would think it’s a third party add-on.

If there’s no battery, that suggests it’s a dumb key, which is just making a circuit by connecting (or disconnecting) two parts of the the plug together. As a matter of interest, do you have to leave it in the dash in order to drive the car, or is it “push in and remove” to energise?

The plugs themselves are widely available; for example here on eBay. if my suspicions are right, buying one of those and bridging two of the plug terminals would give you a spare key. You’d need to experiment with a multimeter or dismantle the existing plug (if it comes apart) to find out which two terminals.
Jonathan

1995 Elan S2 no 512, BRG/magnolia, last of 4 UK S2 to this spec
2020 Volvo XC40 T4 AWD
User avatar
Saltire
God
 
Posts: 1417
Joined: Sun 05.04.2015, 22:27
Location: Left foot in Wiltshire, right foot in Gloucestershire, heart in Scotland

Re: Immobiliser ‘key’

Postby AllenG » Sat 27.07.2019, 08:54

Thanks Guys, the car is an 92 SE Turbo. To make the ignition work, you push this into a fitting which has been mounted just forward of the ignition switch, then remove it, insert ignition key and start as normal so yes it is a “dumb key”. It doesn’t come apart the plastic is a one piece moulding. If you don’t follow this procedure and just go straight to ignition key the car is dead, nothing happens. Will look at getting a jack plug from eBay and having a play. As I said in the original post everything works fine I’m just paranoid about losing this thing and not having a spare. Cheers :D
AllenG
Newbie
 
Posts: 14
Joined: Tue 11.06.2013, 12:06
Location: Ayr, Scotland

Re: Immobiliser ‘key’

Postby dapinky » Sat 27.07.2019, 11:38

I remember having one of these on one of my old cars (Can't remember which one, but it was one of the Sprints)....

... IIRC it was more than just a totally dumb connection, but I can't recall what it consisted of, how it worked or what was needed to replicate it.....

.... so, I'm not really much help here!
Dave

Just the one now, but this one's mine! - and it will be finished eventually.....

go on - click this link - you know you want to!
User avatar
dapinky
LEC Administrator
 
Posts: 8577
Joined: Sun 15.10.2006, 12:54
Location: As far west as you can get in West Wales before you become Irish (Pembroke Dock).

Re: Immobiliser ‘key’

Postby KenCarson » Sat 27.07.2019, 12:05

Are you sure it is a totally 'dumb' key? I have an Autowatch immobiliser, the touch key has no battery but has to be programmed to the immobiliser code. The code will be on the brain of the alarm (although I have no idea where that is on mine!) Abacus Alarms https://abacuscaralarms.co.uk/ may be able to advise.
KenCarson
Newbie
 
Posts: 22
Joined: Mon 06.08.2018, 12:07
Location: Warwickshire

Re: Immobiliser ‘key’

Postby Jamie N » Sat 27.07.2019, 12:20

I have encountered a couple of these on the dash looms when doing Honda engine conversions, they are pretty simple and easily bypassed, if you lost the only key you have it wouldn't be very difficult to remove the complete thing and put the wiring back to standard.

There is an even better solution... Get a company to fit an up to date alarm / immobiliser to your Elan, they will remove the antiquated set up
you currently have, providing you with far better security with up to date technology, along with spare fobs, job done.

Might even reduce your insurance premium. ;-)
User avatar
Jamie N
Seal God
 
Posts: 973
Joined: Wed 21.12.2005, 18:49
Location: Fife...but not a Fifer !.

Re: Immobiliser ‘key’

Postby AllenG » Sat 27.07.2019, 16:24

Thanks everyone, I’ll keep enjoying it through the summer and I think I’ll go with Jamie’s suggestion of getting a modern alarm/immobiliser fitted
AllenG
Newbie
 
Posts: 14
Joined: Tue 11.06.2013, 12:06
Location: Ayr, Scotland

Re: Immobiliser ‘key’

Postby Saltire » Sat 27.07.2019, 22:18

Jamie N wrote:I have encountered a couple of these on the dash looms when doing Honda engine conversions, they are pretty simple and easily bypassed, if you lost the only key you have it wouldn't be very difficult to remove the complete thing and put the wiring back to standard.

There is an even better solution... Get a company to fit an up to date alarm / immobiliser to your Elan, they will remove the antiquated set up
you currently have, providing you with far better security with up to date technology, along with spare fobs, job done.

Might even reduce your insurance premium. ;-)

:agree: with Jamie. I have done this (on an S2) and it’s much better than OEM. It links into the central locking, provides alarm and immobiliser, gives me a remote boot release and even auto window closure - all working off the key fob. Best of all, you can program up to 4 fobs yourself for added peace of mind.
Jonathan

1995 Elan S2 no 512, BRG/magnolia, last of 4 UK S2 to this spec
2020 Volvo XC40 T4 AWD
User avatar
Saltire
God
 
Posts: 1417
Joined: Sun 05.04.2015, 22:27
Location: Left foot in Wiltshire, right foot in Gloucestershire, heart in Scotland

Re: Immobiliser ‘key’

Postby John_W » Sun 28.07.2019, 10:39

What's the make and model, Jonathan?
User avatar
John_W
Heid-bummer
 
Posts: 3780
Joined: Mon 21.04.2003, 12:31
Location: Aberdeen

Re: Immobiliser ‘key’

Postby Saltire » Sun 28.07.2019, 22:33

John_W wrote:What's the make and model, Jonathan?

Sorry, should have said; too much Bunnahabhain last night :oops:

Toad Ai606T2
Jonathan

1995 Elan S2 no 512, BRG/magnolia, last of 4 UK S2 to this spec
2020 Volvo XC40 T4 AWD
User avatar
Saltire
God
 
Posts: 1417
Joined: Sun 05.04.2015, 22:27
Location: Left foot in Wiltshire, right foot in Gloucestershire, heart in Scotland

Re: Immobiliser ‘key’

Postby John_W » Mon 29.07.2019, 13:28

Thanks - It’s always good to get a recommendation from somebody who’s fitted a piece of kit they find is good!
User avatar
John_W
Heid-bummer
 
Posts: 3780
Joined: Mon 21.04.2003, 12:31
Location: Aberdeen

Re: Immobiliser ‘key’

Postby Saltire » Mon 29.07.2019, 19:06

If you’re seriously considering it, drop me a PM. I have all the details of how I did it in electronic format suitable to go on a USB stick (too much to email).
Jonathan

1995 Elan S2 no 512, BRG/magnolia, last of 4 UK S2 to this spec
2020 Volvo XC40 T4 AWD
User avatar
Saltire
God
 
Posts: 1417
Joined: Sun 05.04.2015, 22:27
Location: Left foot in Wiltshire, right foot in Gloucestershire, heart in Scotland

Re: Immobiliser ‘key’

Postby AllenG » Sun 11.08.2019, 17:03

:roll: As per one suggestion I got a standard quarter inch jack plug, tried that and not surprisingly the car didn’t start. Tried again with the proper key (jack plug) ......car didn’t start. Disconnected car battery and reconnected, car started. Then discovered car can be started without first inserting/removing the immobiliser key! So I’ve killed the immobiliser :? . Not too concerned as I no longer need worry about the loss of the key.
AllenG
Newbie
 
Posts: 14
Joined: Tue 11.06.2013, 12:06
Location: Ayr, Scotland

Re: Immobiliser ‘key’

Postby Tuga2112 » Mon 12.08.2019, 13:04

the simplest way to confirm if its a "dumb key" would be to just put a multimeter across the 2 sections and check for continuity.
from the description i've read it does not sound like a "dumb key" design, i suspect theres an integrated circuit chip inside that connectes to the alarm giving the password required to authorise the +ign connection to establish.
1991 elan se
1991 elan se project
91 MR2 Turbo (import) project
94 Celica GT4 (Import)
94 4Runner
98 Celica SR

too many projects. not enough sunny days :(
User avatar
Tuga2112
God
 
Posts: 1245
Joined: Fri 12.09.2014, 22:54
Location: Walsall

Re: Immobiliser ‘key’

Postby RonR » Mon 12.08.2019, 15:16

The plug in the supplied photo is a "Stereo" version, which has 3 connections (L, R and Gnd)
If a 2 connection "Mono" plug was used to test, it would short out 2 of the 3 connections, even if no wiring was attached.
User avatar
RonR
Enthusiast
 
Posts: 147
Joined: Mon 22.08.2016, 20:25
Location: Bromley

Next

Return to Electrical / Electronics / Stereo / Lights etc.

Who is online

Users browsing this forum: No registered users and 1 guest