Technical Service Bulletins (TSBs) for the 2011 C300 are official communications between Mercedes-Benz & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.

    STEERING

    • TSB #LI46-35P059241

      Date Announced:
      JUN 20, 2014
      NHTSA ID:
      #10056472

      XENTRY (MERCEDES): AFTER ENGINE HAS STARTED, SEVERAL ISSUES OCCURS, AN ACOUSTIC WARNING SOUNDS IS HEARD, THE INSTRUMENT CLUSTER DISPLAYS WARNING MESSAGE POWER STEERING MALFUNCTION, SERVICE REQUIRED. STEERING SYSTEM IS SLUGGISH. Read More »

    • TSB #LI46.15-P-058505

      Date Announced:
      FEB 25, 2014
      NHTSA ID:
      #10167002

      Creaking noise when making vertical or longitudinal adjustment to electrical steering column Read More »

    • TSB #LI46.35-P-058063

      Date Announced:
      FEB 18, 2014
      NHTSA ID:
      #10167003

      Fault code U41600 logged in 'ES' (electric steering) control unit after software update or steering gear replacement. Note: Fault code U41600 means: Implausible data were received from the control unit "Traction system". Read More »

    • TSB #LI33.30-P-056665

      Date Announced:
      JUL 18, 2013
      NHTSA ID:
      #10167550

      Single, 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). Read More »

    • TSB #20-P-053398

      Date Announced:
      MAR 12, 2012
      NHTSA ID:
      #10044181

      XENTRY: RATTLING/THUMPING NOISES FROM THE AREA OF THE STEERING ON ROUGH ROADS OR WHEN DRIVING OVER ROAD UNDULATIONS. NO MODEL YEARS GIVEN. ALSO INCLUDED MODELS 168 AND 172. *JS Read More »

    STEERING:HYDRAULIC POWER ASSIST SYSTEM

    • TSB #LI46.35-P-059989

      Date Announced:
      OCT 10, 2014
      NHTSA ID:
      #10135621

      Red display message in instrument cluster "Power Steering Malfunction - See Owner's Manual" Read More »

    STEERING:ELECTRIC POWER ASSIST SYSTEM

    • TSB #LI46.35-P-059989

      Date Announced:
      OCT 16, 2014
      NHTSA ID:
      #10135638

      Red display message in instrument cluster "Power Steering Malfunction - See Owner's Manual" Read More »

    SUSPENSION

    SUSPENSION:FRONT

    • TSB #LI32.25-P-061137

      Date Announced:
      MAR 24, 2015
      NHTSA ID:
      #10135599

      Clunking noise from front axle suspension strut or rear axle shock absorber on short strokes of the damper Read More »

    SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY:U-BOLT, LEAF SPRING TO AXLE

    • TSB #LI33-15-P047471

      Date Announced:
      DEC 04, 2013
      NHTSA ID:
      #10051975

      XENTRY (MERCEDES): WITH STEERING AT FULL LOCK, NOISE CAN BE HEARD, LIKE KNOCKING AND/OR CREAKING, COMING FROM AREA OF FRONT AXLE WHEN MANEUVERING. Read More »

    SUSPENSION:FRONT:MACPHERSON STRUT

    • TSB #LI32.25-P-061137

      Date Announced:
      MAR 24, 2015
      NHTSA ID:
      #10135599

      Clunking noise from front axle suspension strut or rear axle shock absorber on short strokes of the damper Read More »

    SUSPENSION:REAR:SHOCK ABSORBER

    • TSB #LI32.25-P-061137

      Date Announced:
      MAR 24, 2015
      NHTSA ID:
      #10135599

      Clunking noise from front axle suspension strut or rear axle shock absorber on short strokes of the damper Read More »

    SERVICE BRAKES, HYDRAULIC

    • TSB #LI42.47-P-067502

      Date Announced:
      DEC 09, 2020
      NHTSA ID:
      #10186135

      If the customer brakes sharply from a speed of > 30mph, without ABS intervention, there is a single cracking noise from the area of the ESP hydraulic unit Read More »

    ENGINE (PWS)

    • TSB #LI05 20-P-067123

      Date Announced:
      OCT 09, 2017
      NHTSA ID:
      #10158329

      Oil in engine wiring harness Read More »

    • TSB #LI-47-40-P053871

      Date Announced:
      AUG 13, 2013
      NHTSA ID:
      #10044601

      XENTRY (MERCEDES): CHECK ENGINE LIGHT (CEL) IS ACTIVATED; STORED IN ENGINE CONTROL UNIT IS VERY FINE LEAK. AUTOMATIC FUEL TANK LEAK TEST SOFTWARE IS SENSITIVE AND CAN PRODUCES AN ERRONEOUS DIAGNOSIS. Read More »

    • TSB #2012120002

      Date Announced:
      APR 18, 2013
      NHTSA ID:
      #10059560

      SUMMARY TO BE PROVIDED ON A FUTURE DATE. Read More »

    ENGINE AND ENGINE COOLING

    • TSB #LI4245P073405

      Date Announced:
      AUG 02, 2021
      NHTSA ID:
      #10205790

      After starting the engine, the instrument cluster shows the "EBD not available, diagnosis/test stand" message in yellow. Read More »

    • TSB #LI07 70-P-066276

      Date Announced:
      MAR 12, 2018
      NHTSA ID:
      #10144075

      Check Engine Light is on with DTC P030185/ P030685 for misfire cylinder 1 and 6. Read More »

    • TSB #LI14.20-P-052079

      Date Announced:
      FEB 06, 2014
      NHTSA ID:
      #10166978

      Engine diagnosis warning lamp lights up - Fault code entry (FC) 14A600 or 14A700 Read More »

    • TSB #LI47.40-P-053871

      Date Announced:
      JUL 10, 2013
      NHTSA ID:
      #10167554

      Engine diagnosis warning lamp activated. Fault code P045600 "Very fine leak" or P044200 "Fine leak" stored in engine control unit. Read More »

    ENGINE AND ENGINE COOLING:ENGINE

    • TSB #10-P-053538

      Date Announced:
      APR 05, 2012
      NHTSA ID:
      #10044201

      XENTRY: MERCEDES BENZ: VEHICLE DOES NOT PERFORM AUTOMATIC ENGINE STOP ALTHOUGH THE ECO FUNCTION WAS ACTIVATED VIA THE ECO BUTTON. NO MODEL YEARS GIVEN. ALSO INCLUDED MODEL 169 AND F CELL. *JS Read More »

    FUEL SYSTEM, GASOLINE

    • TSB #ELW-Fuel Filter

      Date Announced:
      NOV 03, 2023
      NHTSA ID:
      #10246055

      In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA (??A?A?MBUSA??A?A?) is extending the warranty coverage on the fuel filter unit for ... Read More »

    POWER TRAIN

    • TSB #LI27.50-P-071658

      Date Announced:
      SEP 30, 2020
      NHTSA ID:
      #10181124

      Harsh engagement when changing gear range from P to D or R Read More »

    • TSB #LI35 30-P-058566

      Date Announced:
      AUG 05, 2019
      NHTSA ID:
      #10164811

      Throttle lift-off clunking noises at drive shafts of rear axle Read More »

    • TSB #LI54.15-P-057373

      Date Announced:
      FEB 28, 2014
      NHTSA ID:
      #10167510

      The 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. Read More »

    • TSB #LI35.30-P-058566

      Date Announced:
      FEB 25, 2014
      NHTSA ID:
      #10166994

      Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). Heard once when changing from forward to reverse (and vice versa) Read More »

    • TSB #LI27.20-P-055758

      Date Announced:
      JUL 30, 2013
      NHTSA ID:
      #10167546

      FC 2783 (Friction power of torque converter lockup clutch is too high) or FC 0741 (Actuation of torque converter lockup clutch not possible) stored in transmission control unit. Read More »

    ELECTRICAL SYSTEM

    • TSB #LI68.05-P-060306

      Date Announced:
      JAN 27, 2022
      NHTSA ID:
      #10207198

      Complaint The garage door hand transmitter cannot be initialized with the integrated garage door opener in the inside rearview mirror. Cause 1. Read More »

    • TSB #LI68.05-P-060307

      Date Announced:
      JAN 09, 2022
      NHTSA ID:
      #10207199

      Complaint The range of the integrated garage door opener (GTO) is too short. Cause 1. Vehicles equipped with infrared windows and/or a heated windshield may suffer from complaints involving low transmission power. 2. Read More »

    • TSB #LI54.30-P-072145

      Date Announced:
      DEC 10, 2020
      NHTSA ID:
      #10186141

      NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock Read More »

    • TSB #LI54.15-P-057373

      Date Announced:
      FEB 28, 2014
      NHTSA ID:
      #10167510

      The 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. Read More »

    • TSB #LI49.20-P-056353

      Date Announced:
      FEB 25, 2014
      NHTSA ID:
      #10167007

      Engine diagnosis warning lamp active. Fault code 20BE1B and/or 20BD1B (The heating element of the AdBlue tank has a malfunction) is logged in the Blue-Tec control unit. Read More »

    • TSB #LI54.10-P-054089

      Date Announced:
      FEB 25, 2014
      NHTSA ID:
      #10167009

      Battery discharged, vehicle does not start. Read More »

    • TSB #LI49.20-P-056353

      Date Announced:
      FEB 12, 2014
      NHTSA ID:
      #10167006

      Engine diagnosis warning lamp active. Fault code 20BE1B and/or 20BD1B (The heating element of the AdBlue tank has a malfunction) is logged in the Blue-Tec control unit. Read More »

    • TSB #LI54.25-P-056472

      Date Announced:
      FEB 10, 2014
      NHTSA ID:
      #10167015

      The 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. Read More »

    • TSB #S-SC- 2013090008

      Date Announced:
      FEB 01, 2014
      NHTSA ID:
      #10167040

      This Service Campaign has been initiated because Daimler AG (DAG), the manufacturer of Mercedes-Benz vehicles, has determined that the mbrace software does not correspond to current production configuration. Read More »

    • TSB #LI54.65-P-058105

      Date Announced:
      DEC 12, 2013
      NHTSA ID:
      #10167016

      The Parktronic system switches to malfunction. The driver notices a fault message (4 red LEDs and 2 sec continuous signal). Read More »

    • TSB #LI8285P055695

      Date Announced:
      AUG 05, 2013
      NHTSA ID:
      #10205237

      The COMAND unit does not start or the display remains dark. Read More »

    • TSB #LI82.95-P-056655

      Date Announced:
      JUL 12, 2013
      NHTSA ID:
      #10167564

      Customer experiences low battery conditions, resulting in jump starts, and eventually requiring battery replacement. Read More »

    • TSB #LI82.85-P-055695

      Date Announced:
      JUL 08, 2013
      NHTSA ID:
      #10167563

      The 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). Read More »

    • TSB #LI46.35-P-055485

      Date Announced:
      JUN 28, 2013
      NHTSA ID:
      #10167552

      Engine does not start, or various fault messages in instrument cluster immediately after engine start and servo assistance is reduced. Read More »

    ELECTRICAL SYSTEM:12V/24V/48V BATTERY

    • TSB #S-B-54.10/243A

      Date Announced:
      MAY 30, 2013
      NHTSA ID:
      #10059825

      SUMMARY TO BE PROVIDED ON A FUTURE DATE. Read More »

    • TSB #10-P-053538

      Date Announced:
      APR 05, 2012
      NHTSA ID:
      #10044201

      XENTRY: MERCEDES BENZ: VEHICLE DOES NOT PERFORM AUTOMATIC ENGINE STOP ALTHOUGH THE ECO FUNCTION WAS ACTIVATED VIA THE ECO BUTTON. NO MODEL YEARS GIVEN. ALSO INCLUDED MODEL 169 AND F CELL. *JS Read More »

    ELECTRICAL SYSTEM:WIRING

    • TSB #SC-2012070002

      Date Announced:
      NOV 01, 2012
      NHTSA ID:
      #10048279

      MERCEDES: CAMSHAFT ADJUSTMENT SOLENOID MAY LEAK OIL DUE TO SETTLING PROPERTIES OF SEAL AND THE ENGINE WIRING HARNESS WILL BE RETROFITTED WITH FOUR ADAPTER HARNESSES AS A PRECAUTIONARY MEASURE. Read More »

    ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

    • TSB #LI4245P073405

      Date Announced:
      AUG 02, 2021
      NHTSA ID:
      #10205790

      After starting the engine, the instrument cluster shows the "EBD not available, diagnosis/test stand" message in yellow. Read More »

    • TSB #LI54.30-P-072145

      Date Announced:
      DEC 10, 2020
      NHTSA ID:
      #10186141

      NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock Read More »

    • TSB #LI46-35P059241

      Date Announced:
      JUN 20, 2014
      NHTSA ID:
      #10056472

      XENTRY (MERCEDES): AFTER ENGINE HAS STARTED, SEVERAL ISSUES OCCURS, AN ACOUSTIC WARNING SOUNDS IS HEARD, THE INSTRUMENT CLUSTER DISPLAYS WARNING MESSAGE POWER STEERING MALFUNCTION, SERVICE REQUIRED. STEERING SYSTEM IS SLUGGISH. Read More »

    ELECTRICAL SYSTEM:SOFTWARE

    • TSB #LI8270P056963

      Date Announced:
      AUG 21, 2013
      NHTSA ID:
      #10205234

      Software update of COMAND Online control unit. Read More »

    • TSB #LI8270P055572

      Date Announced:
      AUG 05, 2013
      NHTSA ID:
      #10205233

      Mobile phone cotacts are not transferred completely. Read More »

    • TSB #LI54-71-P055558

      Date Announced:
      JAN 22, 2013
      NHTSA ID:
      #10051976

      XENTRY (MERCEDES): DISPLAYED IN MULTIFUNCTION "LANE KEEPING ASSIST IS INOPERATIVE AND ACTIVE LANE KEEPING ASSIST IS INOPERATIVE" WHEN DRIVING OVER LANE MARKING. MODELS 204 (C300, 350, 63, 250). Read More »

    EXTERIOR LIGHTING

    LIGHTING (PWS)

    • TSB #LI82.10-P-064766

      Date Announced:
      JUN 30, 2020
      NHTSA ID:
      #10177571

      Lamp unit fogged or droplets forming. Due to the vent openings, the lamp unit is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate it. This can result in deposits on the diffuser and lens. Read More »

    EXTERIOR LIGHTING:HEADLIGHTS

    EXTERIOR LIGHTING:HEADLIGHTS:CONCEALMENT DEVICES

    • TSB #LI82.10-P-064766

      Date Announced:
      JUN 30, 2020
      NHTSA ID:
      #10177571

      Lamp unit fogged or droplets forming. Due to the vent openings, the lamp unit is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate it. This can result in deposits on the diffuser and lens. Read More »

    EXTERIOR LIGHTING:TURN SIGNAL

    • TSB #LI-72-19-P053604

      Date Announced:
      APR 18, 2012
      NHTSA ID:
      #10044603

      XENTRY (MERCEDES): THE SIGNAL LIGHT FOR RIGHT REAR TURN IS INOPERATIVE. FAULT MESSAGE DISPLAYED. *PE Read More »

    VISIBILITY

    AIR BAGS

    • TSB #TakataRecall

      Date Announced:
      FEB 26, 2016
      NHTSA ID:
      #10235996

      Additional information around the recent recall announcement affecting approximately 705,983 Mercedes-Benz passenger vehicles involving Takata driver-side airbags containing PSDl-5 type inflators Read More »

    • TSB #RecallUpdate

      Date Announced:
      FEB 11, 2016
      NHTSA ID:
      #10235978

      Recall Campaign announcement for Takata driver airbags. Read More »

    SEAT BELTS

    • TSB #LI91 45-P-066075

      Date Announced:
      JUL 23, 2018
      NHTSA ID:
      #10151959

      Seat belt extender toothed rack sluggish or makes noises Read More »

    • TSB #40-P-052794

      Date Announced:
      APR 20, 2012
      NHTSA ID:
      #10044222

      MERCEDES BENZ: FRONT OR REAR SEAT BELT DOES NOT ROLL UP CORRECTLY. DIRT DEPOSITS ON THE SEAT BELT GUIDE DUE TO SOILED SEAT BELT. ALSO INCLUDED MODELS 169, F CELL, 246, AND 231. NO MODEL YEARS GIVEN. Read More »

    STRUCTURE

    • TSB #ELW-RearSubframe

      Date Announced:
      MAR 10, 2023
      NHTSA ID:
      #10233780

      Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 20 years/unlimited miles, and applies to the vehicle ... Read More »

    • TSB #ELW-RearSubframe

      Date Announced:
      FEB 10, 2023
      NHTSA ID:
      #10232321

      Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 20 years/unlimited miles, and applies to the vehicle ... Read More »

    • TSB #P-SC-2014020003

      Date Announced:
      FEB 01, 2014
      NHTSA ID:
      #10167038

      This Service Campaign has been initiated because Daimler AG (DAG), manufacturer of Mercedes-Benz vehicles, has determined that the seam seal at the spare tire well may not be to specification. Read More »

    TIRES

    • TSB #C1A-130501

      Date Announced:
      JUL 01, 2013
      NHTSA ID:
      #10167536

      Model X204 (GLK 250 BT) with AMG Styling Package 321. Model Year 2013 Install Tire Fit Kit, Replace Monroney Label Read More »

    TIRES:TEMPORARY/EMERGENCY SPARE TIRE

    • TSB #P-SC-2014020003

      Date Announced:
      FEB 01, 2014
      NHTSA ID:
      #10167038

      This Service Campaign has been initiated because Daimler AG (DAG), manufacturer of Mercedes-Benz vehicles, has determined that the seam seal at the spare tire well may not be to specification. Read More »

    TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS

    • TSB #15-P-053382

      Date Announced:
      MAR 15, 2012
      NHTSA ID:
      #10044168

      XENTRY: DISPLAY MESSAGE 'TIRE PRESSURE MONITOR INOPERATIVE' THE SIGNAL LEVEL DIFFERENCE BETWEEN FRONT AND REAR AXLES IS MARGINAL. THEREFORE NO PERMANENT ASSIGNMENT CAN BE MADE. NO MODEL YEARS GIVEN. Read More »

    SEATS

    • TSB #LI91.18-P-077075

      Date Announced:
      DEC 04, 2023
      NHTSA ID:
      #10248162

      Crease formation on genuine leather seat covers in vehicles with low mileage ??A?A? Objects left on the seats for extended periods of time (pressure marks). ??A?A? Objects wedged between the seat backrest and seat cushion (e.g. Read More »

    • TSB #LI91.10-P-048411

      Date Announced:
      JUL 12, 2014
      NHTSA ID:
      #10166080

      The pneumatic 4-way lumbar support fails. Lumbar support pockets cannot be filled up or they drain. Read More »

    • TSB #LI91.10-P-059387

      Date Announced:
      JUL 12, 2014
      NHTSA ID:
      #10166093

      Noises from flat spring core in backrest Read More »

    • TSB #LI91.25-P-059380

      Date Announced:
      JUL 10, 2014
      NHTSA ID:
      #10166099

      Pneumatic comfort systems with insufficient performance, entirely inoperative or leaky. Read More »

    ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)

    • TSB #LI42.47-P-067502

      Date Announced:
      DEC 09, 2020
      NHTSA ID:
      #10186135

      If the customer brakes sharply from a speed of > 30mph, without ABS intervention, there is a single cracking noise from the area of the ESP hydraulic unit Read More »

    LANE DEPARTURE

    • TSB #LI54 71-P-056477

      Date Announced:
      AUG 07, 2019
      NHTSA ID:
      #10164813

      All MB cars with code 234 (Blind Spot Assist) or code 237 (Active Blind Spot Assist) Read More »

    EQUIPMENT

    • TSB #LI82.10-P-064766

      Date Announced:
      JUN 30, 2020
      NHTSA ID:
      #10177571

      Lamp unit fogged or droplets forming. Due to the vent openings, the lamp unit is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate it. This can result in deposits on the diffuser and lens. Read More »

    • TSB #NCU - HVAC Warra

      Date Announced:
      MAY 21, 2020
      NHTSA ID:
      #10176670

      To enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its core businesses, Mercedes-Benz USA, LLC (MBUSA) has entered into a settlement regarding claims relating to alleged mold and mildew ... Read More »

    • TSB #P-B-82.85-703

      Date Announced:
      MAR 10, 2014
      NHTSA ID:
      #10167532

      A production fault means that the telematics DVD A 166 827 14 00 cannot be used. Because of this the previous telematics DVDs A 204 827 03 65 and A 204 827 10 65 must continue to be used for control unit programming. Read More »

    • TSB #LI82.85-P-058582

      Date Announced:
      MAR 03, 2014
      NHTSA ID:
      #10167525

      Apple 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. Read More »

    • TSB #S-B-54.10/243A

      Date Announced:
      MAY 30, 2013
      NHTSA ID:
      #10059825

      SUMMARY TO BE PROVIDED ON A FUTURE DATE. Read More »

    EQUIPMENT:ELECTRICAL

    • TSB #C1A140101

      Date Announced:
      FEB 11, 2014
      NHTSA ID:
      #10166975

      This Customer 1 Action has been initiated because certain mbrace subscribers were recently contacted by mbrace informing them that they need to have an i-button call performed to ensure their mbrace device has registered with the ... Read More »

    EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES

    EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

    • TSB #ELW-Fuel Filter

      Date Announced:
      NOV 03, 2023
      NHTSA ID:
      #10246055

      In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA (??A?A?MBUSA??A?A?) is extending the warranty coverage on the fuel filter unit for ... Read More »

    • TSB #CL-ELWSubframe

      Date Announced:
      MAR 31, 2023
      NHTSA ID:
      #10233796

      Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 20 years/unlimited miles, and applies to the vehicle ... Read More »

    • TSB #ELW-RearSubframe

      Date Announced:
      MAR 10, 2023
      NHTSA ID:
      #10233780

      Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 20 years/unlimited miles, and applies to the vehicle ... Read More »

    EQUIPMENT ADAPTIVE/MOBILITY