The simple rule is that if byte 18 is 00 then modifying byte 18 is a seriously bad idea - because you don't know what the hidden code is, which means you can't go back to it.if the code of byte 18 is masked behind 00 so how can I know the original code ???
The simple rule is that if byte 18 is 00 then modifying byte 18 is a seriously bad idea - because you don't know what the hidden code is, which means you can't go back to it.
Hi Tommy,
The vast majority that are masked by 00's can be resolved by entering the proper value (providing that value is known) to restore all lighting. In this case I don't know what his would be. This car is very similar to a NAR NMS but that coding didn't work.
There however were some RoW market models where pre-ODIS required a GFF parameter test plan and current day ODIS does something similar because there wasn't an actual coding value (between HEX 01 and FF) that would fix them. If memory serves those were the late production 2009 (technically MY 2010) Skoda Octavias with PQ35 BCMs and that type would fall into your custom explanation if someone tinkered with it.