Mercedesbenz B1e9e2a -

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specifically indicates that the "Favorites" button is sticking or jammed , resulting in a missing or unchanged electronic signal. In modern Mercedes-Benz vehicles—such as the C-Class, E-Class (W213), and GLC-Class—the "Favorites" button (star icon) acts as a physical or touch-sensitive shortcut key to quickly access preferred navigation destinations, radio stations, or vehicle settings. When this button becomes physically lodged or suffers an internal short circuit, the onboard diagnostic system logs DTC B1E9E2A as an active/current fault.

Here is a detailed breakdown of what this code means, its causes, symptoms, and how it is typically resolved. mercedesbenz b1e9e2a

Press the button rapidly dozens of times to work the alcohol down into the housing and dissolve the sticky residue.

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Verified against OEM parts catalog – matches A 223 900 78 01 . No update required.

What and class (e.g., 2018 E300, 2021 C300) you drive? roughly "The 'Favorites' button is stuck.

: A four-digit security PIN is used for sensitive remote functions like locking/unlocking doors via the Mercedes me app .

Mercedes-Benz models such as the W212 and S205 have documented this code. The description for has been consistently reported as: "Die Taste 'Favoriten' klemmt. Eine Signaländerung ist nicht vorhanden" or in English, roughly "The 'Favorites' button is stuck. No signal change is present." Similar findings from diagnostic sessions using tools like "SmartDigi" report the code as "B1E9E2A Клавиша 'Фавориты' заедает. Изменение сигнала отсутствует" (The 'Favorites' button is sticking. No signal change).