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09 mondeo won't start shows engine malfunction active immobiliser

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Hi, was your battery going flat?

And did you try jump starting by any chance?

If the answer is yes. this is what you have to do

1 charge your battery

2Remove the abs module multi plug

3 connect the battery back up only temporary

4connect an OBD READER PREFERABLY with FORSCAN. Clear all the codes, remove battery "again" reconnect the abs multi plug, reconnect battery for the last time 

Then you should be able to start your car

Hope this helps

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