I've owned a GS-911 since 2009: it's a useful tool, but a bit limited in some aspects.
I do all my own maintenance.
My last job was stripping down my HP2 to the bare engine.
And I don't have a wife or a dog, but I do have a sense of humor.
And thank you, I understand what CANbus is.
I was using the term loosely, and if one wants to be more technically correct, then I am saying that it would be very useful to be able to modify the values that the ZFE module looks up when it gets the resistance values back VIA the CANbus system.
Incidentally, if you buy aftermarket items, the manufacturer uses the term "CANbus" friendly: meaning they don't get an error message issued.
So that's why I use the term myself: it's the terminology people understand.
What I don't know specifically, and if you don't know either, join the club, is how the ZFE module decides that there is a lighting error: by using an LED instead of an OEM incandescent bulb.
When I last spoke to Stephen about modifying the system via the GS-911, he said that he was concerned that allowing that would allow too great a chance for a SNAFU and potentially scramble the modules if people messed it up.
That was specifically about changing from km to miles.
However I now see that you CAN do that.
Great: I've had to change mine twice: from miles to km and then back to miles.
And each time via the dealer.
I THINK the system measures the lighting resistance and if it is too low or too high it thinks it's a short, or open-circuit.
And issues an error message (via CANbus) to the other modules.
In my case to the instrument cluster module.
But HOW does it measure the resistance?
Is this firmware or hardware?
Like does it use the equivalent of a galvometer to measure the current to the specific item?
And is there ONE internal device for this?
Or perhaps are there a number of small resistors hardwired in the ZFE module so that when current goes to the specific pin (for the headlight it is pin 56 of the ZFE) the voltage drop is measured.
If so, this is a hardware thing and hard to change.
Anyways, I'll wait until Stephen is back and will email him directly about it.
Some Chinese manufacturers seem to have figured out how to do this, so I'm hoping Stephen "wil 'n Boer maak 'n plan".