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    VW Sharan 1998 ADY 2.0L intermittant non start. Archived Message

    Posted by Peter Holland on June 16, 2008, 8:56 am

    I've had this car for two weeks now and I'm seriously fed up with it. Siemens 5WP4 161 engine ECU. No fault codes stored, immobiliser light on the door goes out as it should after a few seconds, if it doesn't start you loose injector pulse and signal to ignition amplifer. Fuel and injection relays are still energised. All power supplies including cranking signal from switch and earth to ECU checked, crank and cam signals checked. When it does n't start you can hear 5 beeps coming from the fusebox when you release the key from cranking. If it starts it doesn't beep.

    I think it has something to do with the immobiliser, but all live data from the immobilser seems ok, it recognises the key etc. I just don't know what this beeping is all about as it is definitely connected to the non start fault.

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