i dont have a manual for this car, and the error icon i am intermittenly recieving is not document on the 'quick reference' manual. it is yellowish, and resembles a finger pointing at something (a headlight perhaps?) i have noticed this occurance on grades generally. i suspect it is the xenon leveling 'thingy' but the icon is different than that fault's icon in the quick ref guide as well as a previous a6 i have owned (arrows / light bulb icon). is anyone familiar / can identify this error?