2012 Mercedes-Benz B246

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 10167577Since 12/2012 (model 166) and since 06/2013 (model 242) the glass breakage loops are no longer in the side windows and rear window. Suitable interior protection ensures that the interior monitoring function continues to operate correctly.
• 10167564Customer experiences low battery conditions, resulting in jump starts, and eventually requiring battery replacement.
• 10167563The COMAND unit does not start or the COMAND display remains dark. The COMAND unit cannot be operated. Note: The problem disappears after a lengthy idle period (>6h) or after interrupting the power supply (circuit 30).
• 10167551Vehicle wanders to the left or right.
• 10167550Single, throttle lift-off, clunking noise from the side shaft when starting off (audible at the wheel). The clunk is heard once when changing from forward to reverse (and vice versa).
• 10167529White stains occur on the Dinamica covers in the areas of the cushion cover and backrest cover.
• 10167525Apple products (iPhone or iPod) are not charged via the serial USB interface of the COMAND Online control unit (A40/3) in the stowage compartment of the center console.
• 10167517The center stowage compartment does on close or open smoothly.
• 10167512ESP, BAS, PRE-SAFE, HOLD function, Hill-Start Assist and ESP trailer stabilization are unavailable due to a malfunction. Also the adaptive brake lights, Adaptive Brake Assist and/or ATTENTION ASSIST may have failed or be deactivated. The brake system continues to operate with normal effectiveness. The support functions listed may have failed, but are available again after an ignition off/on cycle. One or more of the faults relating to the accelerator pedal (B37) listed under 'Control unit / Fault code' are stored in the engine control unit. Consequential faults may be stored in the ESP; see also under 'Control unit / Fault code'.
• 10167511Engine diagnosis warning lamp is active. One or more of the faults listed under 'Control unit / Fault code' relating to the throttle valve actuator (M16/6) and/or oxygen sensor (G3/1 and/or G3/2) are stored in the engine control unit.
• 10167510The vehicle cannot be started The vehicle may start by itself shortly after the startup attempt with a delay, as the relay can be late closing. and/or The gear selection is displayed, but no gear is engaged. Gear selection is not possible. and/or Rear window wiper inoperative. and/or Various fault codes concerning disrupted communication paths are stored and/or the corresponding control units are not displayed in the quick test. Affected control units include the transmission control unit, electronic ignition lock, driver SAM, engine control unit, Lane Keeping Assist, Distronic.
• 10167497Transmission intermittently fails to shift, vehicle jolts in higher gears. The dual clutch transmission (DKG) control unit contains the stored FC 92177 or FC 92100 ("The shift valve of the internal shaft has a malfunction. The commanded position cannot be reached"). In the extended fault freeze frame data it can be seen that this fault was set in 7th gear - see Figure 1 in attachment.
• 10167019Blind Spot Assist inoperative.
• 10167015The key is not recognized in the electronic ignition switch, the vehicle cannot be started and/or the automatic transmission may perform an "Automatic P function" at speeds below 6 km/h.
• 10166987Transmission intermittently fails to shift, vehicle jolts in higher gears. The dual clutch transmission (DKG) control unit contains the stored FC 92177 or 92100 - The shift valve of the internal shaft has a malfunction. The commanded position was not reached. In the extended fault freeze frame data it can be seen that this fault was set in 7th gear - see Figure 1 in attachment.
• 10166986Reverse gear cannot be engaged. The following fault code is stored in the dual clutch transmission (DKG) control unit: FC 074600 -> Pressure regulating valve 1 does not close or FC 077600 -> Pressure regulating valve 1 does not close In the extended fault freeze frame data it can be seen that both clutches are pressurized when the fault code 074600 or 077600 occurs - see Figure 1 in attachment.
• 10166976Message in instrument cluster "DISTRONIC PLUSCurrently Unavailable - See Owner's Manual"
• 10165847Diverse fault messages in instrument cluster. Distronic, ESP, tire pressure monitoring, engine indicator lamp Diverse CAN communication errors stored in quick test Possible malfunctions in Parktronic or Active Parking Assist. Possible malfunctions of PTC heater booster.
• 10162197"High-voltage battery warning message" in instrument cluster
• 10160622Audio 20: Apple CarPlay displays pixelated image
• 10158308COMAND Online: Some contacts on the telephone are not found via voice control.
• 10158285Noise complaints from backrest locks (2nd seat row)
• 10158269COMAND Online: After map update is aborted, navigation no longer functions
• 10158267COMAND Online: Some contacts on the telephone are not found via voice control.
• 10158255BR117, BR156, BR176, BR242, and BT246 - Vehicle does not start, battery discharged.
• 10158216Message "SOS - Service Not Activated" in instrument cluster
• 10158199Vehicle does not start, battery discharged.
• 10157073Vehicle does not start, battery discharged.
• 10155129Audio 20: Apple CarPlay displays pixelated image
• 10154028Audio 20: Apple CarPlay displays pixelated image
• 10154026Audio 20: Apple CarPlay displays pixelated image
• 10154010Engine diagnosis warning lamp activated - Fault code P012800
• 10152001NTG5*1, Audio 20 - after ECO start/stop, USB music stick is reloaded and music playback begins at track 1.
• 10151995Supplemental restraint system (SRS) lamp in instrument cluster lights up; fault code B000213 and/or B000113 is logged in the SRS control unit
• 10151963Info-Call/S24H-Call/MB Contact: Change of language setting at customer request
• 10151962Plastic element on release lever of manual steering column adjuster loose.
• 10151945Audio 20: Symbols in the status line in the central display can overlap
• 101519437G-DCT: Scratching noise when changing gear from D to R when transmission cold.
• 10144137Information on replacing the high-voltage battery
• 10144111NTG5*1, Audio 20 - after ECO start/stop, USB music stick is reloaded and music playback begins at track 1.

Every Mercedes-Benz B246 model year

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