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  #21  
Old 01-10-2019, 07:14 PM
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I have heard of folk (on this forum) with an e53 where the sun-visor test DOES work - so it may be dependant on the exact fault...

Thinking about this issue, if there are electrical items that are running when the ignition switch is off (key out) then the ignition switch has to be the prime suspect. Any other explanation involves a much more complex electrical gremlin that seems unlikely.

In complex electrical systems most failures are connected to items that move, get hot or carry high voltage. If a component doesn't involve one or more of these conditions, it'll likely last a very long time.

In the case of the ignition switch (contacts module), it moves. It then wears and the connection resistances go up. If a connection is carrying high current and it goes up in resistance, then it can get hot. That's two....
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  #22  
Old 01-13-2019, 06:36 AM
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Thanks for everyone’s input. Having disconnected the battery twice, l have not been able to reproduce the original faults. “Inspection” is on the dash and stays on for approximately 5 seconds after engine start. The “i” warning light stays on and l can read error code E30.

This might not be related but l also found these faults:
1 central locking button on consol does not work
2 no interior lights when door opened
3 central locking on key does not work but it does open the rear hatch

I found a thread where it was said that the keys were low in charge and he charged car over night with the key in the ignition. In the morning, the central locking worked! I will try that but that does not explain the consol button and the interior lights. Fuses 20, 24 and 60 are fine.

I did previously swap out the immobiliser unit ECU 61356905666, in an attempt to see if it fixed it. BUT l got them mixed up and now don’t know if the original is in the car or the purchased one. Either way, could that be the cause?
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  #23  
Old 01-13-2019, 01:24 PM
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I was in the car just now and noticed that when I press the console lock button or the key remote, it activates the light near the gear stick. So at least that says a signal is getting through to the computer, right?
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