Indicators not working well not on dash board and no sound but lights on indicators are working, then car immobiliser kicks in when i turn ignition off. Once i reset the immobiliser the car starts fine but indicators not work as stated before and sound systerm not working correctly as well as sat nav everything seems to be lagging. is indicator relay linked to immobilisor ? Any ideas ?
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these types of symptoms are usually caused by a faulty ignition switch, I would suggest you start there and be sure to check fuses if you have note.
the other possibility would be a failed control module somewhere on the vehicle which is causing interference for other systems. To diagnose this, either the vehicle will need to be scanned with a BMW scan tool, or you will need to start unhooking components one by one until the rest come back online.
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