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I need help. I swapped my old radio for a newer one today. Same brand (Sony) I put the previous one in no problem. Now, the car won't start and I'm getting an"airbag failure " warning. Everything lites up, battery is strong but nothing happens not even a click. The car locks with the key remotely, but will not unlock remotely. All computer functions seem normal please help.

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Sorry 02 996. I saw a similar post on here but no one had responded. When I say it doesn't turnover , I mean it acts like the battery is dead but all the lites are on. After the computer runs its ck it tells me the airbag failure message.

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Take a stab at disconnecting the neg of the battery for 5 minutes and let the memory clear out then give it a crank. Question, did you re-wire this new Sony or was it just a plug it in swap considering you went from Sony to Sony?

What about the ground wire from the original factory radio chassis that works with the factory alarm system, is it taped up.

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I had the battery cables disconnected all nite. I wasn't a plug and play. When I bought the car four years ago it had a jvc stereo in it. The volume wasn't working well so I installed the Sony. They had the ground wire attached to the ground from the radio so I did the same. I just went one by one swapping the speaker wires and everything worked fine for several years. One thing. Every time I locked the car remotely it beeped once. Until reading on this forum, I thought that was normal. It's never had any problems starting previous to yesterday. Yesterday I did the same thing that I did years ago when swapping radios. I moved the car at one point prior to this happening. I'm wondering if one of the speaker wires was actually a wire that makes the loop to check the system and I might have been confusing it with a speaker wire and shorted something. I never had the speakers working at all, but moved the car an hour or so after working on the speakers. I'm concerned a fried my ecu. I'm still getting the airbag failure warning What about the immobilizer? I guess I'll have to tow it to my mechanic tomorrow.

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On my 2000 996, there was one wire, brown I think, that had to be attached to the frame of the stereo. When I did my swap out to an aftermarket unit I didn't ground that brown wire initially and got the horn honk when locking. Maybe something with alarm module immobilizing the car? I would double check all the wiring.

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I finally figured it out. It was a 7.5 amp fuse. I think it was e1. At any rate it now works. Strange thing is while it wasn't working my doors lock and alarm set as normal, but now that is fixed it once again beeps once when locked. I can live with it I guess

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I finally figured it out. It was a 7.5 amp fuse. I think it was e1. At any rate it now works. Strange thing is while it wasn't working my doors lock and alarm set as normal, but now that is fixed it once again beeps once when locked. I can live with it I guess

A single beep when locking means an alarm zone is open.

Two beeps means their is a fault in the alarm system.

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I guess the open zone is the radio. The alarm thinks its gone. It's strange. When I take the yellow wire(battery) off the continuous hot, it locks normally when I put it back on , the beep returns. Is there a way to bypass the radio part of the alarm?

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Cant say for sure. i never saw the factory radio. I think that's the wire that was causing my problems with the speakers not working. They only work when I plug in the amp wire to that wire I don't think there is an alternative, but not sure. I just copied what the guy before me had done I have the yellow battery (memory) wire tied into the thick black/red and the red acc wire tied into the orange wire. Can I possibly put the amp wire with the red acc wire? Leaving the brown/ blue to be cut?

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