S40 V40 Cars: Immobilizer, no crank no start

[fin]

My V40 will not start. When I turn the key to position 2 the red light on the left speaker flashes rapidly for about 15 seconds. When I then turn the key to position 3, all dash lights go out.

Any ideas how to fix this? Here is a youtube video of the problem.

https://www.youtube.com/watch?v=eV_HIDz-Xc8

[DXMachina]

Originally Posted by fin

When I then turn the key to position 3, all dash lights go out.

Could the battery be dead? or the earth contract strip rotted through?
the lights shouldnt go out.... seems like its a failure of electrical supply

Or possibly a failed system master relay?

[V40DSchariot]

Yes I'd agree with DXMachina on the electrical fault. I'd check plugs around ignition area too. Give things a waggle whilst in ignition 3 position and see if any dash lights come on.

[Clan]

Originally Posted by fin

My V40 will not start. When I turn the key to position 2 the red light on the left speaker flashes rapidly for about 15 seconds. When I then turn the key to position 3, all dash lights go out.

Any ideas how to fix this? Here is a youtube video of the problem.

https://www.youtube.com/watch?v=eV_HIDz-Xc8

It is probably lack of a power supply to Immobiliser and ignition switch , The feed comes from the fuse box under the bonnet , down and under and across the beam under the radiator , back up and into the car near the bonnet pull . I would open up the loom under the radiator and check for swelling in any of the wires and make a repair .. It does happen , water can get in the loom and corrode the wires , they turn into white powder .
That is if you cant measure any voltage on any of the immobiliser pins or ignition switch ..

[gatos]

Check the 2 earth points from the battery to the gearbox and to the chassis under the battery tray. If they are fine, I would also tend to agree with the people above, that it may be the loom under the radiator. Had exactly the same symptoms with a GDI a few months ago and 4-5 cables in the loom under the radiator were completely corroded and broken

[fin]

Hello DXmachina, can you tell me where I can locate the system master relay? I have tested the battery leads, they are ok.

[fin]

Originally Posted by DXMachina

Could the battery be dead? or the earth contract strip rotted through?
the lights shouldnt go out.... seems like its a failure of electrical supply

Or possibly a failed system master relay?

Thanks for your reply DXmachina, could you tell me where the system master relay is located?