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Dan, ASE Certified Technician
Category: Mazda
Satisfied Customers: 1668
Experience:  Auto Technician
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Have a 2008 mazda 3 that has security light flashing .I

Customer Question

Have a 2008 mazda 3 that has security light flashing for imobilizer.I recently have had battery disconnected for 1 week.I also replaced instrument cluster and then reinstalled original one.I have a no start no crank due to security light.I have codes p1260,u0155,b2477,b1601.Looks like transponder key not registering? Im thinking the battery disconnected may be problem as pcm lost something? Is there a reboot of somekind
Submitted: 1 year ago.
Category: Mazda
Expert:  Dan replied 1 year ago.

The cluster is important to the security system. You may have lost key memory. You could call a mobile locksmith to reprogram the keys. They should have the right software. You could also have it towed to the dealer.

You could try disconnecting both battery cables and holding them together for a few minutes. That should clear all the memory from all the systems.

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