Question about Hyundai Motor 2003 Elantra

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'03 Hyundai Elantra - Keyless entry remote not working

Just bought the car from dealership.
Keyless entry remote doesnt work.When pressed one of the buttons, both signal lights blinks twice. The other button does nothing.
Car does not lock or unlock. Need to do it manually.
Is it the car battery?
Thank you :)

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  • Anonymous Mar 13, 2014

    bought a new fob today and the dealership programmed it for me. The fob will not unlock however when the button is pressed the dome light comes on. THe lock and panic buttons do work. The dealership agree to look at the keyless entry module. IF that checks out where and what should I be looking for?

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  • Hyundai Master
  • 1,779 Answers

It wouldn't be the car battery, but since you just purchased the car, the dealership should correct the problem. Bring it to their attention right away. Did you get any kind of warranty? Most dealers have at least a 30 day warranty for things like this.

Posted on Apr 05, 2009

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TECHNICAL SERVICE BULLETIN

Group
90 - ELECTRICAL

Number
03-90-020

Date
October, 2003

Model
Elantra 2001-2004, Santa Fe 2001-2004, Sonata 2002-2004, Tiburon 2003-2004, XG(NNN) NNN-NNNNand XG(NNN) NNN-NNNN2004

Subject
SECURITY SYSTEM KEYLESS ADAPTER CABLE

This bulletin supersedes TSB # XXXXX
DESCRIPTION:
The security system keyless adapter cable (SPX/Kent-Moore P/N 09900-21300) is a special service tool (SST) that is used for programming new keyless entry remote transmitters to the factory security systems. The keyless adapter is used in conjunction with the Hi-Scan Pro (with Hi-Scan SOL Pro Software Version 09-29-03 or newer) and Data Link Connector (DLC) Cable.
SERVICE INFORMATION:
The keyless adapter cable can be used on the following vehicles:
^ 2001 -2004 Elantra
^ 2001-2004 SantaFe
^ 2002 - 2004 Sonata


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DESCRIPTION: The security system keyless adapter cable (SPX/Kent-Moore P/N 09900-21300) is a special service tool (SST) that is used for programming new keyless entry remote transmitters to the factory security systems. The keyless adapter is used in conjunction with the Hi-Scan Pro (with Hi-Scan SOL Pro Software Version 09-29-03
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NOTE
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PAGES

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KEYLESS ADAPTER CABLE INSTRUCTIONS:
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  2. Plug the keyless adapter into the vehicle's 10-pin multi-purpose connector located behind the driver's side lower instrument panel (next to the DLC). NOTE Sample vehicle shown is the Santa Fe.
    0390020c.gif
  3. Turn the Hi-Scan Pro ON
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    0390020d.gif
  4. Select option "HYUNDAI VEHICLE DIAGNOSIS"
    and press ENTER
    . 0390020e.gif
  5. Select vehicle model and press ENTER
    . 0390020f.gif
  6. Select option "TRANSMITTER CODE SAVING"
    and press ENTER
    . 0390020g.gif
  7. Ensure that the key has been removed from the ignition cylinder before proceeding. 0390020h.gif
  8. Follow the steps noted on the Hi-Scan Pro screen to program the remote(s). NOTE The factory security system can only be programmed to accept two remote transmitters and MUST be programmed for both remote transmitters at the same time.
    0390020i.gif
  9. Press ESC
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  10. Turn the Hi-Scan Pro OFF
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