V40 Immobiliser light stays on

dr007 · Mar 11th, 2008, 11:04

The Immobiliser light on the dash board came on and stayed on so I stopped driving the car. A few days later I switched it back on and the light is not constantly on.
Do I need to be overly concerned about this and what is likely to happen if I continue to drive?
I am driving to Gigha, Scotland with a heavily loaded car a week on Thursday!
First time to this forum and any help would be appreciated.

Multiplex · Mar 11th, 2008, 18:57

The codes really need to be read from the vehicle to pinpoint the route cause.

There is a modification that can be carried out to some vehicles (dependant on chassis number) that involves fitting a relay to the ignition wiring to prevent the immobilizer warning staying on after a successful start.

Best to call into your local dealer.

SilverGhost40 · Aug 27th, 2008, 22:58

The immobiliser light staying on is supposed to indicate a fault with the immobiliser (on my 1997 V40). I ignored mine and now it doesn't come on and my engine management light flashes (indicating a communication problem between the Immobiliser and the Engine Management System), and car won't start - which is why I'm here.

I know need to get my car to a garage so they can look at it

Mar 11th, 2008, 11:04	#1
dr007 New Member Last Online: Mar 7th, 2020 23:46 Join Date: Mar 2008 Location: sheffield	V40 Immobiliser light stays on The Immobiliser light on the dash board came on and stayed on so I stopped driving the car. A few days later I switched it back on and the light is not constantly on. Do I need to be overly concerned about this and what is likely to happen if I continue to drive? I am driving to Gigha, Scotland with a heavily loaded car a week on Thursday! First time to this forum and any help would be appreciated.

Mar 11th, 2008, 18:57	#2
Multiplex Senior Member Last Online: Jan 29th, 2019 22:42 Join Date: Dec 2001 Location: North West	The codes really need to be read from the vehicle to pinpoint the route cause. There is a modification that can be carried out to some vehicles (dependant on chassis number) that involves fitting a relay to the ignition wiring to prevent the immobilizer warning staying on after a successful start. Best to call into your local dealer.

Aug 27th, 2008, 22:58	#3
SilverGhost40 New Member Last Online: Sep 22nd, 2008 20:45 Join Date: Aug 2008 Location: Otley	The immobiliser light staying on is supposed to indicate a fault with the immobiliser (on my 1997 V40). I ignored mine and now it doesn't come on and my engine management light flashes (indicating a communication problem between the Immobiliser and the Engine Management System), and car won't start - which is why I'm here. I know need to get my car to a garage so they can look at it

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