I’m new here and I recently bought a used 2012 Audi A4 Quattro and the more I research this vehicle I read a lot about hidden features. Besides YouTube, can someone tell me where to locate all of these hidden features ? Thanks
I'm assuming what you mean with what you mean by hidden features is to reveal programming options with VCDS (VAG group software for service and diagnostics) where you can programme or code new things such as tachometer needle sweep on start up, enable rear light clusters to be on with front DRLs, nearside mirror dip on reverse, etc.
Avoid EBay for VCDS and buy the genuine article or find a forum member near you to help for a case of beer. The software is free as it periodically needs updated, but the genuine cable that's compatible is key. More details here: https://m.gendan.co.uk/vcds-hex-v2.php