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How to Activate Optional Functions via OBD on the Mercedes A-Class

Model: Mercedes Classe A W176 - Years 2012-2018
Part: Checks and maintenance

Video tutorial
Detailed instructions - This brief guide will show you the instructions to activate the optional functions of the Mercedes A-Class, as well as the B-Class and CLA. First, get in the vehicle on the driver’s side and plug the diagnostic tool into the OBD port located below; then turn on the ignition by pressing the start button once, as shown in the video. At this point, follow the indicated procedure by going to the hidden options, activating the hidden function from the computer; from here, you will be able to activate various functions!

Updated on 23 September 2026 by ScegliAuto


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