Technical Service Bulletins (TSBs) for the 2011 CLS550 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 #LI46.10-P-057961

      Date Announced:
      FEB 18, 2014
      NHTSA ID:
      #10167000

      Surface damage on steering wheel trim Read More »

    STEERING:HYDRAULIC POWER ASSIST SYSTEM

    • TSB #LI46-35-P053719

      Date Announced:
      MAY 01, 2012
      NHTSA ID:
      #10044600

      XENTRY (MERCEDES): ASSISTANCE IS OFF FOR POWER STEERING AND FAULT MESSAGE, ON ENGINE START, POWER STEERING MALFUNCTION, SERVICE REQUIRED, IN INSTRUMENT CLUSTER. MODEL 218. NO MODEL YEAR. Read More »

    STEERING:ELECTRIC POWER ASSIST SYSTEM

    • TSB #LI46-35-P053719

      Date Announced:
      MAY 01, 2012
      NHTSA ID:
      #10044600

      XENTRY (MERCEDES): ASSISTANCE IS OFF FOR POWER STEERING AND FAULT MESSAGE, ON ENGINE START, POWER STEERING MALFUNCTION, SERVICE REQUIRED, IN INSTRUMENT CLUSTER. MODEL 218. NO MODEL YEAR. Read More »

    SUSPENSION

    SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM

    • TSB #LI32-22-P-051722

      Date Announced:
      NOV 14, 2011
      NHTSA ID:
      #10043810

      MERCEDES: AIRMATIC MALFUNCTION. LEAKING AIRMATIC SYSTEM AND NOT A FAULTY COMPRESSOR. *KB Read More »

    BRAKES (PWS)

    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 »

    PARKING BRAKE

    • TSB #LI54 65-P-068316

      Date Announced:
      JUL 03, 2018
      NHTSA ID:
      #10151926

      Warnings without obvious cause from front parking sensors in vehicles with AMG Styling Package (SA code 772) Read More »

    ENGINE (PWS)

    ENGINE AND ENGINE COOLING

    • TSB #ELW-M278Catalyst

      Date Announced:
      MAY 11, 2023
      NHTSA ID:
      #10237240

      This extended warranty applies to the following condition that may necessitate the repair or replacement of the catalytic converter system and is related to: a?? A check engine Malfunction Indicator Lamp (a??MILa??) may illuminate due to ... Read More »

    • TSB #CL-ELWExhaustVal

      Date Announced:
      MAR 30, 2023
      NHTSA ID:
      #10233794

      Why the warranty extension? On certain Model Year 2011-2016 CL/CLS/S/E/ML/SL/G/GL/GLE-Class vehicles with V8 engines, the exhaust valve assembly might not work properly and result in an engine misfire and potential illumination of the ... Read More »

    • TSB #LI05.10-P-056435

      Date Announced:
      MAR 21, 2014
      NHTSA ID:
      #10167488

      Engine rattling noise after engine start for several seconds 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 »

    • TSB #LI03.20-P-048278

      Date Announced:
      MAR 26, 2013
      NHTSA ID:
      #10135950

      Engine makes intermittent knocking noise, ticking/crackling Read More »

    ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL

    ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

    • TSB #ELW-M278Catalyst

      Date Announced:
      MAY 11, 2023
      NHTSA ID:
      #10237240

      This extended warranty applies to the following condition that may necessitate the repair or replacement of the catalytic converter system and is related to: a?? A check engine Malfunction Indicator Lamp (a??MILa??) may illuminate due to ... Read More »

    FUEL SYSTEM, GASOLINE

    • TSB #P-B-47.10-63c

      Date Announced:
      JUN 10, 2015
      NHTSA ID:
      #10135900

      Fuel Odor In the Area of the Fuel Tank Read More »

    • TSB #LI01.30-P-058630

      Date Announced:
      MAR 21, 2014
      NHTSA ID:
      #10167487

      Minor leaks at the oil duct of the left or right cylinder head of engines 157, 276 and 278. 1. Left cylinder head: Oil passage plug hole on left beside mechanical vacuum pump. 2. Read More »

    FUEL SYSTEM, GASOLINE:STORAGE:AUXILLARY TANK

    • TSB #P-B-47.10/63

      Date Announced:
      JUN 10, 2015
      NHTSA ID:
      #10058130

      MERCEDES-BENZ MODEL YEARS 2003-2009 MODEL 211, MODEL YEARS 2006-2011 MODEL 219: FUEL ODOR IN THE AREA OF THE FUEL TANK . WARRANTY EXTENSION HAS BEEN ISSUED ON FUEL TANK COMPONENTS FOR CERTAIN VEHICLES. *LJ UPDATED 10/6/15. Read More »

    POWER TRAIN

    • 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 #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 »

    • TSB #LI27.50-P-056467

      Date Announced:
      JUL 26, 2013
      NHTSA ID:
      #10167547

      Shift quality complaints and/or automatic transmission in limp-home mode in combination with one or more of the following fault codes: P060600, P072200, P072300, P072364, P072900, P073000, P073100, P073200, P073300, P073400, P073500, ... Read More »

    ELECTRICAL SYSTEM

    • 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 #LI54-30-P-068844

      Date Announced:
      JAN 30, 2019
      NHTSA ID:
      #10155126

      Model series 257: In the Edition 1, the Welcome graphic is not displayed in the instrument cluster with the specific Edition animation. Read More »

    • TSB #LI54 65-P-068316

      Date Announced:
      JUL 03, 2018
      NHTSA ID:
      #10151926

      Warnings without obvious cause from front parking sensors in vehicles with AMG Styling Package (SA code 772) Read More »

    • TSB #LI01.30-P-058630

      Date Announced:
      MAR 21, 2014
      NHTSA ID:
      #10167487

      Minor leaks at the oil duct of the left or right cylinder head of engines 157, 276 and 278. 1. Left cylinder head: Oil passage plug hole on left beside mechanical vacuum pump. 2. 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 #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 #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 »

    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 #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

    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: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:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH

    • TSB #LI-82-10P-053439

      Date Announced:
      SEP 13, 2013
      NHTSA ID:
      #10045029

      XENTRY (MERCEDES): MESSAGE WILL APPEAR INDICATING HIGH BEAM ASSIST IS ACTIVATED AND IS INOPERATIVE. MODELS 204, 212, 207, 221, 216, 218, AND 166. NO MODEL YEARS LISTED. *PE UPDATED 11/26/13. Read More »

    VISIBILITY

    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

    STRUCTURE:BODY

    STRUCTURE:BODY:TRUNK LID

    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-059386

      Date Announced:
      JUL 12, 2014
      NHTSA ID:
      #10166092

      Dynamic seat control is not functioning correctly and/or air cushions do not inflate fully. 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 »

    • TSB #LI91.29-P-050932

      Date Announced:
      JUL 10, 2014
      NHTSA ID:
      #10166103

      The controls on the partially electric seat adjustment switch stick or are loose or broken. 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 65-P-068316

      Date Announced:
      JUL 03, 2018
      NHTSA ID:
      #10151926

      Warnings without obvious cause from front parking sensors in vehicles with AMG Styling Package (SA code 772) 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 #LI72 40-P-069669

      Date Announced:
      APR 25, 2019
      NHTSA ID:
      #10160730

      Window lifter inoperative Read More »

    • TSB #LI82 70-P-067429

      Date Announced:
      JUL 12, 2018
      NHTSA ID:
      #10151941

      Inductive charging: iPhone is not reliably charged 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 #GI88.40-P-057430

      Date Announced:
      FEB 03, 2014
      NHTSA ID:
      #10166976

      Message in instrument cluster "DISTRONIC PLUSCurrently Unavailable - See Owner's Manual" Read More »

    • TSB #LI68.10-P-056727

      Date Announced:
      JUL 09, 2013
      NHTSA ID:
      #10167556

      Glove box squeaks/rattles at top left mounting. Read More »

    • TSB #LI-54-65P053709

      Date Announced:
      MAY 09, 2012
      NHTSA ID:
      #10044599

      XENTRY (MERCEDES): ON SOME VEHICLES, WHENEVER THE REVERSE GEAR IS ENGAGED, THE REVERSE CAMERA FAILS TO SHOW IN DISPLAY CENTRAL. *PE Read More »

    EQUIPMENT:ELECTRICAL

    • TSB #LI82 70-P-067429

      Date Announced:
      JUL 12, 2018
      NHTSA ID:
      #10151941

      Inductive charging: iPhone is not reliably charged Read More »

    • TSB #LI82.70-P-060004

      Date Announced:
      OCT 14, 2014
      NHTSA ID:
      #10135628

      iPhone mobile phone: Various complaints after software update to iOS8 Read More »

    • 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 ADAPTIVE/MOBILITY

    • TSB #LI-54-65P053709

      Date Announced:
      MAY 09, 2012
      NHTSA ID:
      #10044599

      XENTRY (MERCEDES): ON SOME VEHICLES, WHENEVER THE REVERSE GEAR IS ENGAGED, THE REVERSE CAMERA FAILS TO SHOW IN DISPLAY CENTRAL. *PE Read More »