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Mazda CX-9 Keyless Entry (card) problems

11 messages,  Last post on Aug 15, 2009 at 9:15 AM

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#7 of 11 Re: Mazda CX-9 Keyless Entry (card) problems [ceric] by prd3 May 20, 2009 (9:11 am)
Replying to: ceric (May 15, 2009 2:17 pm) Thanks again. I am still waiting for my dealer to get back to me. He says they are stumped and are awaiting directions from MAZDA main office in Toronto. Replies to this message: prd3 (Jun 12, 2009 1:48 pm) ceric (Jun 12, 2009 2:23 pm) prd3 (Jun 12, 2009 3:27 pm)
#8 of 11 Re: Mazda CX-9 Keyless Entry (card) problems [prd3] by prd3 Jun 12, 2009 (1:48 pm)
Replying to: prd3 (May 20, 2009 9:11 am) Well I am back with two new keyless cards (supplied by the dealer) which seem to be working so far. They were never able to clarify the problem for me and they acknowledged they were stumped. However, while I was waiting for the new cards to arrive I experimented with my old ones making sure they were not in close contact with any metal objects and wireless transmissions (coins, keys, pocket knives cell phones etc). Well this seemed to make the trick because the card started working normally again without a hitch. So I am following this practice with the new cards and keeping them separate. I believe that having them on a key chain is asking for trouble in the long run because the problem doesn't manifest itself right away. The troubleshooting section for the keyless card in the manual does mention the possibility of interference from metal objects and the such. One of these days I will pick up enough courage to confirm my observations and put the card back on a key chain.   Thanks for your help   Peter Replies to this message: ceric (Jun 12, 2009 2:23 pm) prd3 (Jun 12, 2009 3:27 pm)
#9 of 11 Re: Mazda CX-9 Keyless Entry (card) problems [prd3] by ceric Jun 12, 2009 (2:23 pm)
Replying to: prd3 (Jun 12, 2009 1:48 pm) So, you got two brand new keycards from dealers under warranty, correct?   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. Replies to this message: prd3 (Jun 12, 2009 3:27 pm)
#10 of 11 Re: Mazda CX-9 Keyless Entry (card) problems [ceric] by prd3 Jun 12, 2009 (3:27 pm)
Replying to: ceric (Jun 12, 2009 2:23 pm) Thanks for your prompt reply. You are correct I got them under warranty. Yes you are right about the area of keys etc on a chain being too small to block emf from the card. However the card EMF could be generating spurious fields on the keys over time that would eventually partially interfere with the card field????????????
#11 of 11 Mazda CX-9 Keyless Entry (card) problems by deenams Aug 15, 2009 (9:15 am)
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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