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TSB List for the 2012 Mercedes-Benz S350

Technical Service Bulletins (TSBs) for the 2012 S350 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.

  • ENGINE (PWS)
  • ENGINE AND ENGINE COOLING
  • FUEL SYSTEM, GASOLINE
  • POWER TRAIN
  • ELECTRICAL SYSTEM
  • ELECTRICAL SYSTEM:12V/24V/48V BATTERY
  • ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
  • ELECTRICAL SYSTEM:IGNITION:SWITCH
  • ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
  • ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
  • ELECTRICAL SYSTEM:SOFTWARE
  • LIGHTING (PWS)
  • EXTERIOR LIGHTING:HEADLIGHTS
  • EXTERIOR LIGHTING:HEADLIGHTS:CONCEALMENT DEVICES
  • VISIBILITY:WINDSHIELD WIPER/WASHER
  • SEAT BELTS
  • STRUCTURE:BODY:DOOR
  • LATCHES/LOCKS/LINKAGES:DOORS:LATCH
  • TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS
  • SEATS
  • LANE DEPARTURE: BLIND SPOT DETECTION
  • INTERIOR LIGHTING
  • EQUIPMENT
  • EQUIPMENT:ELECTRICAL
  • EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES
  • ENGINE (PWS)

    • TSB #SC-2019040001

      Date Announced:
      APR 11, 2019
      NHTSA ID:
      #10160738

      Update engine electronics (ME-SFI) control unit software Read More »

    • TSB #LI54.10-P-060034

      Date Announced:
      OCT 17, 2014
      NHTSA ID:
      #10135639

      Vehicle cannot be unlocked (CL), engine does not start - 12V starter battery discharged 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 »

    ENGINE AND ENGINE COOLING

    • TSB #NCU-2023060005

      Date Announced:
      DEC 11, 2023
      NHTSA ID:
      #10248173

      Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (??A?A?MY??A?A?) 2009-2012 GL-Class, ML-Class, R-Class, and S-Class (164/166, 251, 221 platforms) vehicles, the coding for ... Read More »

    • TSB #NCU-2023060006

      Date Announced:
      DEC 11, 2023
      NHTSA ID:
      #10248178

      Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year ("MY") 2012 S-Class (221 platforms) vehicles, the injector codes might no longer be stored in the engine control unit ... Read More »

    • TSB #LI54.18-P-058597

      Date Announced:
      MAR 04, 2014
      NHTSA ID:
      #10167513

      The engine diagnosis warning lamp - check engine lamp (CEL) is active. One or more of the faults relating to the throttle valve actuator (M16/6) listed under 'Control unit / Fault' is/are stored in the engine control unit (N3/10). Read More »

    • TSB #LI18.30-P-055434

      Date Announced:
      FEB 10, 2014
      NHTSA ID:
      #10166980

      Traces of oil in area of oil cooler (inner V) on engine 642 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 #LI05.10-P-056435

      Date Announced:
      JUL 16, 2013
      NHTSA ID:
      #10167539

      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 »

    FUEL SYSTEM, GASOLINE

    • 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 »

    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 #LI27.60-P-071237

      Date Announced:
      MAY 01, 2020
      NHTSA ID:
      #10176661

      5 to 4 coasting downshift - shift quality concern with cold trans- mission oil on MODEL 217 or 222 in combination with ENGI- NE 278 and TRANSMISSION 722.9 without code 835/498 Read More »

    ELECTRICAL SYSTEM

    • TSB #NCU-2023060005

      Date Announced:
      DEC 11, 2023
      NHTSA ID:
      #10248173

      Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (??A?A?MY??A?A?) 2009-2012 GL-Class, ML-Class, R-Class, and S-Class (164/166, 251, 221 platforms) vehicles, the coding for ... Read More »

    • TSB #NCU-2023060006

      Date Announced:
      DEC 11, 2023
      NHTSA ID:
      #10248178

      Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year ("MY") 2012 S-Class (221 platforms) vehicles, the injector codes might no longer be stored in the engine control unit ... 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 #LI54.10-P-060034

      Date Announced:
      OCT 17, 2014
      NHTSA ID:
      #10135639

      Vehicle cannot be unlocked (CL), engine does not start - 12V starter battery discharged Read More »

    • TSB #LI91.25-P-048132

      Date Announced:
      JUL 10, 2014
      NHTSA ID:
      #10166098

      Multicontour system fails during air release procedure. The system becomes operational again after an ignition change. Fault code 9E8900 is stored. 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 #LI30.20-P-058689

      Date Announced:
      MAR 13, 2014
      NHTSA ID:
      #10167498

      ESP warning message in instrument cluster. One of the fault codes C219700 or 630900 is logged in the ESP control unit (N30/4). 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 #P-B-54.10-225d

      Date Announced:
      JUL 03, 2013
      NHTSA ID:
      #10167572

      If it is necessary to replace an HV battery, the return will only be accepted with the filled-out ?Analysis Sheet for Transportability of High-Voltage Batteries Form? accompanied by: , the removed part, the quick test printout, the BMS ... Read More »

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

    • TSB #SB-2011110013

      Date Announced:
      DEC 01, 2011
      NHTSA ID:
      #10043730

      MERCEDES: UPDATE HIGH VOLTAGE BATTERY SOFTWARE. MODEL 221 MODEL YEARS 2010-2012. *KB Read More »

    ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS

    • TSB #LI54-15-P057373

      Date Announced:
      FEB 28, 2014
      NHTSA ID:
      #10055333

      XENTRY (MERCEDES): THE FUSE AND RELAY BOXES (SRB) IN ENGINE COMPARTMENT OR REAR COMPARTMENT HAS A MALFUNCTION AND DISRUPTIONS TO COMMUNICATION PATHS CAUSING A NO START IN VEHICLE. Read More »

    ELECTRICAL SYSTEM:IGNITION:SWITCH

    • TSB #SCB-2011120005

      Date Announced:
      DEC 01, 2011
      NHTSA ID:
      #10043294

      MERCEDES: DURING THE PRODUCTION PROCESS OF SOME VEHICLES, THE ELECTRONIC IGNITION SWITCH WAS DAMAGED. *PE Read More »

    ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE

    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 »

    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

    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 »

    VISIBILITY:WINDSHIELD WIPER/WASHER

    SEAT BELTS

    STRUCTURE:BODY:DOOR

    • TSB #LI-72-10-P053599

      Date Announced:
      JUN 27, 2012
      NHTSA ID:
      #10045027

      XENTRY(MERCEDES): ON SOME VEHICLES, CAN NOT ENGAGE OR CLOSE FRONT DOOR PROPERLY. MODELS 197.377. NO MODEL YEARS LISTED. *PE Read More »

    LATCHES/LOCKS/LINKAGES:DOORS:LATCH

    • TSB #LI-72-10-P053599

      Date Announced:
      JUN 27, 2012
      NHTSA ID:
      #10045027

      XENTRY(MERCEDES): ON SOME VEHICLES, CAN NOT ENGAGE OR CLOSE FRONT DOOR PROPERLY. MODELS 197.377. NO MODEL YEARS LISTED. *PE Read More »

    TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS

    • TSB #2012010006

      Date Announced:
      SEP 05, 2014
      NHTSA ID:
      #10059557

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

    • TSB #SB-2012010006

      Date Announced:
      FEB 01, 2012
      NHTSA ID:
      #10043726

      MERCEDES: TIRE PRESSURE MONITORING CODING NEEDS TO BE CHECKED AND UPDATED IF NECESSARY. *KB 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-059389

      Date Announced:
      JUL 12, 2014
      NHTSA ID:
      #10166094

      Noises from lock of valuables/stowage compartment or from gap cover between seat and center tunnel. Read More »

    • TSB #LI91.25-P-059392

      Date Announced:
      JUL 12, 2014
      NHTSA ID:
      #10166102

      No inflation of one or more air cushions on the massage/multicontour/dynamic seat modules (driver, front passenger and rear) Bubble formation in one or more seats with massage/multicontour/dynamic seat modules (driver, front passenger ... Read More »

    • TSB #LI91.30-P-048290

      Date Announced:
      JUL 12, 2014
      NHTSA ID:
      #10166106

      Grinding noises can occur in the backrest on active multicontour seats with the backrest under load and the seat ventilation switched on Read More »

    • TSB #LI91.25-P-059382

      Date Announced:
      JUL 11, 2014
      NHTSA ID:
      #10166100

      Dynamic seat (DS) pneumatic pump / multicontour seat pneumatic pump makes noises. Read More »

    • TSB #LI91.10-P-047382

      Date Announced:
      JUL 10, 2014
      NHTSA ID:
      #10166079

      Creaking noises can occur when the side bolster bladders are inflated and deflated Read More »

    • TSB #LI91.10-P-048504

      Date Announced:
      JUL 10, 2014
      NHTSA ID:
      #10166086

      Squeaking/creaking noises from area of seat adjuster 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 »

    LANE DEPARTURE: BLIND SPOT DETECTION

    INTERIOR LIGHTING

    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 #2012010006

      Date Announced:
      SEP 05, 2014
      NHTSA ID:
      #10059557

      SUMMARY TO BE PROVIDED ON A FUTURE DATE. 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 »

    EQUIPMENT:ELECTRICAL

    • TSB #LI80.61-P-061174

      Date Announced:
      MAR 31, 2015
      NHTSA ID:
      #10135604

      Vehicle cannot be opened via Keyless-Go and radio remote control 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:ELECTRICAL:ANTI-THEFT DEVICES

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