Question about 2004 Mazda 3
Switched engine, computer and harness now ignition key will not crank engine over. What to do about immobilizer
Posted by Anonymous on
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Posted on Jan 02, 2017
i hope this helps.http://townhall-talk.edmunds.com/direct/view/.f174532!make=Mazda&model=RX-8&ed_makeindex=.f174532 . if not try this one http://townhall-talk.edmunds.com/WebX?ed_displayMakeModelRelatedDiscussions@@.ef14c39!make=Mazda&model=RX-8 .good luck.
Posted on Oct 29, 2008
Only after market systems have valet over ride switches.
From what you said, the RX8 is shut down from
the factory immobilizer,
The IM05 bypass module is designed to circumvent this
but it's dependent on you having the original
programmed ignition key to do it.
Also, the system must not be damaged, or the code
lost from the keys or it won't do that.
Mazda may also need to reprogram the immobilizer code
for you to procede. Have that bit of info looked at
Posted on Oct 29, 2008
The immobilizer essentially is a relay they spliced in series between the ignition lock and starter solenoid. All you have to do is jumper these 2 wires back together again. You can test wich wire to the immobilizer is from the ignition by watching a test light probed to the contacts when someone cranks the engine. The solenid wire is easier to trace because you can follow it from the starter.
Posted on Apr 12, 2010
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You have an electronic immobilizer key recognition problem. Your key chip is not recognized by the transponder antenna fitted on the ignition switch barrel. Do you have this warning symbol lightning on the dashboard?
This warning lamp indicates that the engine is locked by the immobilizer system, and the engine start sequence must be repeat again.
From year 1995 in Audi-VW (VAG) cars is used engine immobilizer. The VAG group immobilizer system consists of an immobilizer ECU which controls the recognition of keys and the Engine Management ECU system. Immobilizer is activated when the ignition key is removed and, together with the engine control unit, largely prevents unauthorized starting of the engine. The system uses a transmitter and receiver unit in the ignition key (transponder). Whenever an attempt is made to start the engine, it transmits a new code to the car's electronics. The immobilizing is only cancelled and car motor electronic receives permission to start engine if the key sends a right authorization code.
Use another ignition key that you have, and start the engine.
You will need to programm all ignition keys using suitable diagnostic equipment (VAS, VAG-Com) connected to the data link connector of the car.
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