Low battery or immobiliser?

[schnaarf]

Just tried to start the 36 after not using it for 4 days.

All dash lights come on and don't dim when turning the key (apart from the oil level light, which does dim)

Connected a volt meter to the terminals in the engine bay (battery in boot) and voltage showing 11v with no drop when the key is turned. (obc showing 13.5 v when running last weekend)

Immobiliser LED in the dash turns to green when unarmed and red when armed.

When the key is turned, nothing happens, not even a click.

Is it time to remove the toad alarm? I'll try a jump start over the weekend...

[Jhonno]

Low battery.

Should be 14v+ (iirc) when running.

Could be the alternator isn't charging properly.

[schnaarf]

Rats. Thanks Jhonno, I'll get it running and check the alternator output

[schnaarf]

No luck. Got the jump leads out but still nothing. Obc showing 13+ volts but not even a click.

Got to be the toad alarm hasn't it.

[schnaarf]

Would a buggered earth strap cause this problem? Took it off and put it back on between it starting and not, which is a bit of a coincidence. I'm not with the car at the moment so just pulling ideas together for when i get back later.

[Jhonno]

Yes it could I think.

[schnaarf]

Earth strap

Problem solved