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#545363 - 29/11/18 09:37 AM Re: Workshop Note: Immobiliser C.2016........... [Re: DaveW]
John V6 Offline

Member of the Inner Circle

Registered: 21/07/07
Posts: 12631
Loc: Suffolk
Dave,
that is what my Roadster does also.
John
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JohnV6
2006 Indigo Blue Roadster S1

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#545380 - 29/11/18 11:25 AM Re: Workshop Note: Immobiliser C.2016........... [Re: DaveW]
DaveW Offline
Roadster Guru
Member of the Inner Circle

Registered: 11/12/08
Posts: 16763
Loc: South Yorkshire
Here's an update, and this, apparently is how the Plus 4 GDI should behave.......(I've consulted my Guru).

Key into ignition.......two seconds and two flashes and it disarms.

Leave key in ignition without turning..............

Wait 30 seconds approx, and the light goes 'flashflash flaaaaash'
So dot dot dash......and this repeats every thirty seconds while the key is in the barrel but the engine not turned on.

Mine is now doing this, so hopefully it's sorted!
_________________________
DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) Plus 4

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#549848 - 23/12/18 03:34 PM Re: Workshop Note: Immobiliser C.2016........... [Re: DaveW]
DaveW Offline
Roadster Guru
Member of the Inner Circle

Registered: 11/12/08
Posts: 16763
Loc: South Yorkshire
Well, yes and no.........

It's sorted with a fully charged battery. I've tested most days since this upgrade and it's been fine. But over a week without charging the battery, and on a day when it was one degree C in the garage, it was slow to disarm. Leaving the key in place, I got one dot-dot-dash, then it rearmed.

A quick charge of the battery restored normal service.

So the voltage sensitivity is real, and just something to be aware of.

On my 2005 Roadster, the immobiliser light flashes until the ignition is switched on. This means that the sensor coil is not permanently live, and on this car there is no significant battery drain.
_________________________
DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) Plus 4

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#551581 - 03/01/19 08:15 PM Re: Workshop Note: Immobiliser C.2016........... [Re: DaveW]
DaveW Offline
Roadster Guru
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Registered: 11/12/08
Posts: 16763
Loc: South Yorkshire
Probably my final word on this. Over Christmas I've allowed the battery to slowly lose charge. I've tested response each day.
Today at 3 degrees C the immobiliser was sluggish. I put the multimeter on the battery and it's showing 12.18volts. Its now back on charge. From this I'm deducing that 12volts is the point at which things might get awkward.
But I carry a 12v booster pack when we're touring so I'm reasonably confident, now I understand what's going on.
_________________________
DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) Plus 4

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#551621 - 04/01/19 07:57 AM Re: Workshop Note: Immobiliser C.2016........... [Re: DaveW]
Graham, G4FUJ Online   content
Salty Sea Dog
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Registered: 03/07/07
Posts: 21419
Loc: Cheltenham, Glos. UK
If your battery is at 12V it's pretty flat already! smile
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Graham (G4FUJ)

D8921 L44FOR '93 4/4 Giallo Fly 2 seat smile
'90 LR 90 SW
'07 MINI Cooper

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#551626 - 04/01/19 08:38 AM Re: Workshop Note: Immobiliser C.2016........... [Re: DaveW]
Richard Wood Offline
Has a lot to Say!

Registered: 03/02/16
Posts: 1385
Loc: East Harling, Norfolk UK
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Richard

2018 Roadster - Red/Magnolia - "Morton"
1967 Land Rover series 2a SWB
1960 Velocette Venom

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#551723 - 04/01/19 04:10 PM Re: Workshop Note: Immobiliser C.2016........... [Re: DaveW]
DaveW Offline
Roadster Guru
Member of the Inner Circle

Registered: 11/12/08
Posts: 16763
Loc: South Yorkshire
Today after the charge it showed 13.10 Volts.......
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DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) Plus 4

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#551727 - 04/01/19 04:21 PM Re: Workshop Note: Immobiliser C.2016........... [Re: DaveW]
griffo Offline
Learner Plates Off!

Registered: 31/07/14
Posts: 388
Loc: Cornwall
My spies tell me the "reluctor" which picks up the signal from the key chip is just held on with a cable tie (try checking that) and it can work loose until it fails to detect the chip. Pip pip.
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www.griffopix.com

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#551738 - 04/01/19 05:41 PM Re: Workshop Note: Immobiliser C.2016........... [Re: DaveW]
DaveW Offline
Roadster Guru
Member of the Inner Circle

Registered: 11/12/08
Posts: 16763
Loc: South Yorkshire
Not even a cable tie griffo...see first post. Maybe there is now...
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DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) Plus 4

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#552055 - 06/01/19 10:03 AM Re: Workshop Note: Immobiliser C.2016........... [Re: DaveW]
griffo Offline
Learner Plates Off!

Registered: 31/07/14
Posts: 388
Loc: Cornwall
Thanks Dave,
I have to admit I had not read the first post. I've asked the computer gurus programming the the Ecoboost Plus 4 Plus to delete the immobiliser, which is apparently very easy. So no more chips falling out of keys and non starting issues. I will fit a "secret switch" on the power feed to the low pressure fuel pump instead.
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