I used OBDEleven for the first time today it’s very cool. Using the same coding posted for the SQ5 I was able to dim the VC slightly. Haven’t driven with it yet but I could tell the guages got dimmer. Not sure why we need to order a special software tool to lower the brightness on the instrument cluster, but if anyone is interested I can post the coding.

Of course there is, I was lamenting the fact that the guages dont dim low enough (for my preferences) on the max VC dim setting through the MMI. Also the light sensor in the car affects brightness levels too much. In full sun the screens are too bright and then at dusk they get too dim. If there was a way to disable the light sensor (putting the driver in full control of brightness levels on all the screens) that would be ideal. The OBD dimming adjustment does help at night to get the guages to a level that’s easier on the eyes, but it doesn’t change much during the day because the light sensor takes over and brightens everything.

I found another setting in OBD under dim_lightsensor_src that changes the default light sensor from “outside” to “dashboard”. When I first made this change the VC and MMI dimmed WAY down. I then manually adjusted brightness accordingly and thought I had found a solution. But I came back to the car a little later and everything was super bright. I had to change it back to the factory setting. I’ll play around with the OBD some more and see what I can come up with, there’s a number of dimming settings listed.