Question about Hyundai Motor 2003 Sonata

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Battery replacement I have replaced my battery,, now key remote radio & clock does not work.. thank you

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  • groberts72 Dec 04, 2008

    I have the same issue with my 2003. When I asked the dealer, they told me to "bring it in". A friend told me that sometimes you need to touch the positive and negative batter terminals toghether to fix this, but I do not want to do more damage. I'll bet that this is a simple fix that the dealer purposely put into place to generate business.

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Who ever replqaced your battery failed to do it properly. You have to supply a voltage (usually thru alligator clips to the battery cables) so the memory is not lost in the keyless entry system , dashboard, & radio which all now need to be reprogrammed by a Hyundai dealer

Posted on Jul 24, 2009

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Telephone: Fax: VAT Registration No.:
Infrared remote control
NOTE: Infrared emitter can be seen at front edge of key.
System operation
Switch ignition ON. Ensure clock LED illuminates for 3-5 seconds. Pressing key lock button once activates central locking and alarm. Pressing key lock button twice within 3 seconds activates double locking system.
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