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What have they tried so far?
It's probably the key sensor in the ignition lock. They fail a lot. You can either change the ignition lock, which comes with a sensor or you can measure the resistance of the key chip and buy a resister of the same value and solder it in place of the sensor to eliminate reading the key alltogether.
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I just saw your post and wanted to let you know that the 3 responses includes the one you already got and your reply. You can see them all here:
Sorry about the confusion,
Andy (the Admin)