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Directed 556H / 556HW

Honda Accord / Civic Bypass Module

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The 556H allows you to use Remote Start on select Honda and Acura models without having to leave a key in the ignition.

Learn more about the dei-556h

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The Honda/Acura Immobilizer anti-theft system uses a low-power transponder mounted in the head of the ignition key. When the vehicle is started the Key Cylinder Module converts the transponder signal and sends a secure, coded signal to the Engine Control Module. If the signal to the Engine Control Module is correct, the vehicle will start.

The 556H uses a unique auto-program sequence to learn the secure code from the Key Cylinder Module and repeats it when remote start is activated, eliminating the need to leave a key in the vehicle.

The 556H Honda/Acura Immobilizer Bypass Module integrates into the wiring for the Honda/Acura immobilizer anti-theft system to allow remote start capability, while still allowing normal function of the factory immobilizer anti-theft system.

  • Compatible with:
  • Honda Accord 1998-2004
  • Honda CRV 1998-2004
  • Honda Civic 2001-2004
  • Honda Element 2003-2004
  • Honda Odyssey 1998-2003
  • Honda Pilot 2003
  • Acura RSX 2002-2004
  • Acura TSX 2004
  • Acura TL 1998-2002
  • Acura TL 2004
  • Acura MDX 2001-2003
  • Acura 1.7EL 2001-2004
  • Acura Integra 2000-2002
  • Acura 1.6EL 1998-2000
  • 1-year SonicElectronix.com warranty

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Item Details


Manufacturer:

Model Number:

556H

Weight:

0.90lbs

Internal SKU:

dei-556h

Internal Product ID:

8018

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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.