This listing is for a genuine Mercedes dipstick for hydraulic suspension systems (aka: ABC-Active Body Control).  These were used on vehicles from approximately 2001 through to the early 2010s.  Great system when it works, disaster and expensive when it doesn't.  This dipstick will help maintain correct fluid levels in your vehicle.  The german text on the dipstick is as follows:

MOTOR AN UNBELADEN-Engine on, unloaded

MOTOR AUS UNBELADEN-Engine off unloaded

These correspond to different levels on the dipstick.

Free and fast shipping from a Mercedes repair shop that's been working on these vehicles since 1985.  Feel free to send messages with any ABC-related questions and I will try to get back to you..