I bought my 2006 Acura TSX used, so it didn't come with the manual or navi codes. I've checked in all the places suggested online (trunk light, sides of glove box, fuse boxes, etc.) but can't find any codes. The Serial Number for my Navi ECU is GKB28014712 (which I found by following your directions- thank you). Can you look up my 4 digit Navigation Code?
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