I have a Vitz car and it comes with NDDN W58 audio unit. But recently without knowing I removed the battery and NDDN W58 became dead. So I needed to reboot it. After searching online I found a way to reboot it.

This is how I did it.

  • Download NDDN W58 Map disk here and burn it to CD.

  • Insert CD to audio unit

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  • ON/OFF parking lights 3 times while pressing the confirmation button as in the above image.

  • You will be navigating to following

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  • Then go to ERC menu.

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  • Download ERC decoder here and open it on a windows machine.

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  • Get the ERC and enter it and press done.

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  • After that it will automatically complete the booting and will eject the disk.

  • Now check everything, for me it worked perfectly.

Thanks.