need help - PASS-key detection circuit??
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From: One Particular Harbour
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St. Jude Donor '08-'09-'10,-'13
I believe in the Beer Fairy
need help - PASS-key detection circuit??
...and yes I did a search.
Replaced the ignition in my car on Friday. Now the security light won't go off. Pulled codes only to see 'PASS-key detection circuit'. ( B2721 )
Any thought on what exactly this means? And how to fix it?
Car starts up just fine, but now I've got this code and another pesky light on the dash.
Replaced the ignition in my car on Friday. Now the security light won't go off. Pulled codes only to see 'PASS-key detection circuit'. ( B2721 )
Any thought on what exactly this means? And how to fix it?
Car starts up just fine, but now I've got this code and another pesky light on the dash.
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From: One Particular Harbour
Cruise-In 9-10-11 Veteran
St. Jude Donor '08-'09-'10,-'13
I believe in the Beer Fairy
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From: One Particular Harbour
Cruise-In 9-10-11 Veteran
St. Jude Donor '08-'09-'10,-'13
I believe in the Beer Fairy
Thread Starter
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From: One Particular Harbour
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St. Jude Donor '08-'09-'10,-'13
I believe in the Beer Fairy
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Thread Starter
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From: One Particular Harbour
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St. Jude Donor '08-'09-'10,-'13
I believe in the Beer Fairy
Dealership basically told me that without a new ignition in the exact pass code # it won't go away.
one step closer to a c6......
one step closer to a c6......
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Thread Starter
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From: One Particular Harbour
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St. Jude Donor '08-'09-'10,-'13
I believe in the Beer Fairy
That little chip in your key ranges from #1-15. I know my car is a 14. The new ignition and key I'm not sure about. But he's saying it's not the same number, which is causing the codes. But my security light was on with the last ignition, the final crank I got out of it before it seized. Maybe had it been replaced with an ignition / key of the same number the codes would clear.
Either way, I'm not spending another $100+ just to get rid of a light. It's just another one to pop up on the dash.
Either way, I'm not spending another $100+ just to get rid of a light. It's just another one to pop up on the dash.
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From: One Particular Harbour
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St. Jude Donor '08-'09-'10,-'13
I believe in the Beer Fairy
Le Mans Master
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That's your problem then, the key resistance is not the same one as what the computer remembers. I don't think the relearn will fix this, I think you need a trip to the dealer for some special time with the TechII.
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From: Van Buren Arkansas
Wounded Warrior Escort '11
If the BCM doesn't recognize the chip's resistance and it doesn't match what is in memory, the security light should be flashing and the car should not start up. If it is starting under these conditions, then something's been re-wired at the TDR relay. Pull your codes first and report what you find.
