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SUVs Mazda CX-9 Mazda CX-9 Keyless Entry (card) problems
11 messages, Last post on Aug 15, 2009 at 9:15 AM
You are in the Mazda CX-9 Forum. Your Hosts are steve_ & tidester
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Replying to: prd3 (May 13, 2009 2:08 pm) First, there is a central unit. Second, there are several sensors in doors, hatch and ceiling. Third, the fob. It seems to me, the fob is not the problem ('cause your dealer has changed that.). To rule out the sensors, try to unlock from both front doors and the hatch. Do they all have the same problem? If yes, then the central unit needs to be replaced. If no, one of the sensors is bad. According to your description, "open or close the doors or even start", it seems that the chance of multiple sensor failure simultaneously is very small. Therefore, I am betting on the central unit. Dealer has the workshop manual to diagnose the issue, step by step. Mazda provides a very thorough procedure for debugging SmartKey. I think your dealer is a bit on the lazy side. If I were you, I would go to another dealer if another one is closeby.  Cell phone is known to interfere with SmartKey. It is not a myth. Certain places also have strong interence (such as radio stations, airport, etc.) Your SmartKey may behave strangely. However, this does not seem to apply to you. |
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Replying to: prd3 (May 13, 2009 2:08 pm) - Turn the ignition to ON position - Verify the security light (the red key-shape light between the round meters) - If there is any malfunction > After any malfunction is detected, the security light will function as follow for approx. 1 minute <> DTC 16 and lower (error code): Flashes <> DTC 21 and higher: Illuminated - If there is no malfunction > The security light illuminates for approx 3 seconds and goes out So, please follow the procedure to see if there is any malfunction that the system self-detects. If yes, there is another table showing the flash patterns (like Morse codes) and their corresponding problems. Here is a list. Legend: P means a flash. S means no flash. PSPSSSSSS -> No detected communication with coil antenna PSPPSSSSS -> Coil malfunction PSPPPSSSS -> key ID data cannot be read/key ID registration error PSPPPPSSS -> keyless control module cannot read key ID number data normally PSPPPPPSS -> keyless control module has detected unregistered key ID number PSPPPPPPS -> communication error between keyless control module and the PCM (mismatched conditions) PPSPSSSSS -> only one key ID number is registered PPSPPSSSS -> communication error between keyless control module and the PCM (data transfer error) PPSPPPSSS -> ID number data in the PCM and the keyless control module do not match -> keyless control module malfunction Hope this helps you.
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Replying to: ceric (May 14, 2009 12:40 pm) Thanks |
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Replying to: ceric (May 14, 2009 12:40 pm) By the way what is the "fob" ?
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Replying to: prd3 (May 15, 2009 9:47 am) So, if all doors and hatch behave similarly and there is no abnormal flashing of the dash light, it leaves with two possibilities - Keyless Control Module & Coil Antenna. Anyway, this what the workshop manual suggests. Dealer would probably have to replace either of the two and try. Replacing the KCM is more troublesome since one needs to reprogram all the keycards. If I were the mechanic, I would probably try the Coil Antenna first. 
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Replying to: ceric (May 15, 2009 2:17 pm)
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Replying to: prd3 (May 20, 2009 9:11 am) Thanks for your help Peter
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Replying to: prd3 (Jun 12, 2009 1:48 pm) I knew that SmartKey interferes with cell phones and have troubles working in high EMF areas (such as near airports or radio stations). I have no trouble with my SmartKey on keychains. Metals may cause EMF bounce and may attenuate the signal a bit. However, I don't think there are enough area of metal to completely block the EMF from reaching your car's sensors. Interferences from cell phones is, however, not a myth. It has been reported frequently. I have SmartKey on my 2005 Prius as well. You can say that I have been using this technology since end of 2004 w/o issues. For me, I keep on cell on my belt, and keychain in the pocket. No problem of interference.
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Replying to: ceric (Jun 12, 2009 2:23 pm) |
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| Each of the keys have fallen out (and are gone) of the card (2007 CX-9). My dealer tested another key in each card and said that they were "not loose". I am furious--this should not happen! Despite the fact that the keys are no longer under warranty I think Mazda should cover the replacement cost, but the dealer (Wellesley Mazda, Wellesley, MA) refuses to do so. | |
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