Disco 3 - immobilizer

[Rmad12]

Hey Everyone

I am writing on behalf of my mother who has had her Disco 3 recently refuse to start ( after ongoing start issues, most likely regarding the immobiliser)

she's owned this car for 12 years and apart from this issue is in great condition

i've searched the forums but only seem to find some advice regarding D1 and D2s immobiliser problems

Reason i believe its immobiliser, is flashing red light on dash was like it wasn't being unlocked correctly (replaced authentic key fob and changed battery, problem remained)

my questions are , and sorry there are a few

can it be fixed?
How can it be Fixed?
Who can fix it?
How much is it going to cost?
Can you recommend anyone?

much appreciated for any replies as i'm not sure who else to ask ( local mechanic couldn't find anything wrong when the issue was intermittent , now its dead)

Regards
Richard

Model Specs
Land rover Disco 3 s
Auto , Deseil 2.7
180,000km
driven by a old lady

[PerthDisco]

Probably better in the D3 D4 section.

Are you sure the battery is not on the way out as many glitches stem from a failed or failing battery.

* Edit: sorry you checked battery.

Where’s it been serviced till now? They should be able to read any fault code to give a better clue.

[Tombie]

Probably better in the D3 D4 section.

Are you sure the battery is not on the way out as many glitches stem from a failed or failing battery.

* Edit: sorry you checked battery.

Where’s it been serviced till now? They should be able to read any fault code to give a better clue.

I'm betting it may be battery related - the vehicle battery.

[loanrangie]

Where does she live ?

[PerthDisco]

I'm betting it may be battery related - the vehicle battery.

Yes vehicle battery I meant as I think even with a dead key battery the fob will start the car when in the ignition.

[Rmad12]

Battery and Key Fob replaced in the last month

so the ignition will turn on but it wont crank

Lives eastern suburbs of melbourne

Thank you i will post in the D3 and D4 forum