Post by dv52 (Australia) on Dec 12, 2016 6:49:21 GMT
Admin: First-off, I have to admit that there is much about OBD11 Apps that mystifies me! But clearly, where these Apps involve changes to Leuchte channels (in MQB platform vehicles ) there is an initial testing phase in which the software interrogates the existing settings in the car's adaptation channels to determine if the intended changes are appropriate. This is a good-thing, but there have been many recent posts from colleagues who have tried these Apps and have problems . From the information that these colleagues have posted, most have not succeeded in getting the App to proceed past the initial testing phase - this suggests that perhaps the compliance regime that OBD11 imposes might be a little too severe!!
So - I invite OBD11 to consider the following revised testing regime:
As Admin will be aware, the structure of a Leuchte-set (being the 19 x adaptation channels that control a single lamp on an MQB vehicle) is made-up of 5 x banks (or groupings). These groupings are:
- 1 x Bank consisting of 3 x Adaptation channels that define the primary set-up variables as follows:
- Lasttype channel that determines the lamp type (i.e. incandescent, or LED) and describes the general operation of the lamp
- 2 x channels for lamp monitoring and error reporting (not sure, but I suspect these are memory locations?)
- 4 x Banks, each consisting of 4 x adaptation channels that define the functions of the lamp via the settings in the 8 x Alpha channels as follows:
- First Alpha channel - lamp function
- 2nd Alpha channel - lamp function
- Dimming value for the Alpha-pair - value 0-100 for incandescent & 0-127 for LEDs (generally, but not always)
- Dimming Direction for the Alpha-pair - either maximum, or minimum
If the Apps in their current form test all 19 x adaptation channels in a Leuchte-set, then perhaps this is causing the problems that colleagues have reported. I have a data base of mk7 vehicles from around the world and I've noticed that even though the factory settings for Leuchte channels between countries are similar (notwithstanding NAR models where the rear tails are different fittings), there can be variances - mostly in the Dimmwert setting.
So I'm suggesting that Leuchte Apps DO NOT test the Dimmwert values before deciding to proceed with implementation. Dimmwert values purely establish the illumination level of the lamp - so any variance in these values between the factory setting and the car are trivial and should not stop an App from proceeding. I'm also not sure whether dimming direction channels should be tested by the App. In general (although not always the case) the dimming direction value follows the setting that is applied in the Alpha channels. There can be cases where (say) the Blinken Hellphase command applied to an Alpha-channel command can legitimately have a dimming direction of "minimize", but this is rare and it's generally not the case for factory settings to have anything other than the standard set-up. So I suspect that dimming direction channel should not be tested because it will add no value in the process (but I leave this matter to your discretion.
My suggested testing regime for OBD11 Apps that relate to Leuchte channels is summarised in the table below - please consider !!
Don
.