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TSB List for the 2009 Mercedes-Benz GL450

Technical Service Bulletins (TSBs) for the 2009 GL450 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.

  • SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM
  • SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION:LINES AND FITTINGS
  • SUSPENSION:FRONT:SHOCK ABSORBER
  • SUSPENSION:FRONT:WHEEL BEARING
  • SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM
  • SUSPENSION:REAR:SHOCK ABSORBER
  • ENGINE AND ENGINE COOLING
  • ENGINE AND ENGINE COOLING:ENGINE
  • ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
  • FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM
  • POWER TRAIN
  • POWER TRAIN:AUTOMATIC TRANSMISSION
  • ELECTRICAL SYSTEM
  • ELECTRICAL SYSTEM:12V/24V/48V BATTERY
  • ELECTRICAL SYSTEM:STARTER ASSEMBLY
  • ELECTRICAL SYSTEM:IGNITION:MODULE
  • ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
  • ELECTRICAL SYSTEM:SOFTWARE
  • EXTERIOR LIGHTING:HEADLIGHTS
  • VISIBILITY:WINDSHIELD WIPER/WASHER
  • VISIBILITY:REAR WINDOW WIPER/WASHER
  • AIR BAGS
  • SEAT BELTS:FRONT
  • STRUCTURE:BODY:DOOR
  • SEATS
  • SEATS:FRONT ASSEMBLY:POWER ADJUST
  • LANE DEPARTURE
  • INTERIOR LIGHTING
  • EQUIPMENT
  • EQUIPMENT:ELECTRICAL
  • EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
  • EQUIPMENT ADAPTIVE/MOBILITY
  • EQUIPMENT:APPLIANCE:AIR CONDITIONER
  • UNKNOWN OR OTHER
  • SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM

    • TSB #SB-32-25-82

      Date Announced:
      NOV 19, 2010
      NHTSA ID:
      #10037408

      MERCEDES-BENZ: SHOCK ABSORBER PROCEDURE. *RM Read More »

    • TSB #TB-P-047927

      Date Announced:
      SEP 17, 2009
      NHTSA ID:
      #10032727

      MERCEDES: FOLLOWING FAULT CODES ARE ENTERED IN THE CONTROL UNIT AND DISPLAYED-FC5320 DRAIN VALVE:OPEN CIRCUIT OR INSUFFICIENT VALVE CURRENT IN MODELS SERIES 211, 219; FC5260 DRAIN VALVE OPEN CIRCUIT OR INSUFFICIENT VALVE CURRENT IN MODEL ... Read More »

    SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION:LINES AND FITTINGS

    • TSB #TB-P-047927

      Date Announced:
      SEP 17, 2009
      NHTSA ID:
      #10032727

      MERCEDES: FOLLOWING FAULT CODES ARE ENTERED IN THE CONTROL UNIT AND DISPLAYED-FC5320 DRAIN VALVE:OPEN CIRCUIT OR INSUFFICIENT VALVE CURRENT IN MODELS SERIES 211, 219; FC5260 DRAIN VALVE OPEN CIRCUIT OR INSUFFICIENT VALVE CURRENT IN MODEL ... Read More »

    SUSPENSION:FRONT:SHOCK ABSORBER

    SUSPENSION:FRONT:WHEEL BEARING

    • TSB #LI-33-25

      Date Announced:
      APR 09, 2013
      NHTSA ID:
      #10038955

      MERCEDES-BENZ: AT THE FRONT WHEEL BEARING THERE IS A LOUD KNOCK SOUND WHEN GOING AROUND A CORNER AT SLOW SPEEDS. THERE IS AN INSUFFICIENT FIT AT THE BEARINGS. *RM UPDATED 10/14/11. *PE UPDATED 6/19/13. Read More »

    SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM

    SUSPENSION:REAR:SHOCK ABSORBER

    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 »

    ENGINE AND ENGINE COOLING:ENGINE

    • TSB #LI-05-20-P

      Date Announced:
      MAY 31, 2011
      NHTSA ID:
      #10039256

      MERCEDES-BENZ: THE MALFUNCTION LIGHT IS ON WITH MULTIPLE POSSIBLE TROUBLE CODES STORED. THERE COULD BE A PROBLEM WITH THE CAMSHAFT AND/OR SCORING OF A PISTON. *RM Read More »

    • TSB #LI-07-08

      Date Announced:
      DEC 08, 2010
      NHTSA ID:
      #10038227

      MERCEDES-BENZ: THE STARTER CLICKS BUT DOES NOT CRANK WHEN TRYING TO START. A VOLTAGE DIP IS CAUSING THE IGNITION PROCEDURE TO FAIL. *RM Read More »

    • TSB #LI-58-40

      Date Announced:
      DEC 16, 2009
      NHTSA ID:
      #10033070

      XENTRY (MERCEDES): ENGINE WARNING LAMP IS CURRENTLY ON OR WAS ON AND A DELAY FAULT OF THE CAMSHAFT ADJUST TO CURRENT OR STORED IN THE ENGINE CONTROL UNIT. MODELS 171, 203, 209, 211, 219, 221, 216, 230, 164, 251, AND 403. Read More »

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

    FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM

    • TSB #LI-47-50

      Date Announced:
      MAR 09, 2011
      NHTSA ID:
      #10041024

      MERCEDES-BENZ: THE FUEL LEVEL INDICATOR IS WRONG. Read More »

    POWER TRAIN

    • TSB #LI27.20-P-059067

      Date Announced:
      MAY 16, 2014
      NHTSA ID:
      #10135970

      Delayed 2-3 Upshift 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 »

    POWER TRAIN:AUTOMATIC TRANSMISSION

    • TSB #LI-27-60-P049270

      Date Announced:
      APR 04, 2011
      NHTSA ID:
      #10038977

      MERCEDES-BENZ: THE AUTO-TRANSMISSION SWITCHES TO LIMP HOME MODE OR HAS NO POWER. THERE ARE MULTIPLE POSSIBLE FAULT CODES. A PISTON MAY BE DAMAGED. *RM 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 #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 »

    • TSB #LI-58-40

      Date Announced:
      DEC 16, 2009
      NHTSA ID:
      #10033070

      XENTRY (MERCEDES): ENGINE WARNING LAMP IS CURRENTLY ON OR WAS ON AND A DELAY FAULT OF THE CAMSHAFT ADJUST TO CURRENT OR STORED IN THE ENGINE CONTROL UNIT. MODELS 171, 203, 209, 211, 219, 221, 216, 230, 164, 251, AND 403. Read More »

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

    • TSB #P-049567

      Date Announced:
      JUN 07, 2010
      NHTSA ID:
      #10034152

      MERCEDES: BATTERY SYMBOL AND SERVICE REQUIRED (IN WHITE). FAULT MESSAGE IS DISPLAYED IF THE CHARGE LEVEL IS TOO LOW OR THE PARK PAWL ADDITIONAL BATTERY IS DEFECTIVE. Read More »

    ELECTRICAL SYSTEM:STARTER ASSEMBLY

    • TSB #LI-07-08

      Date Announced:
      DEC 08, 2010
      NHTSA ID:
      #10038227

      MERCEDES-BENZ: THE STARTER CLICKS BUT DOES NOT CRANK WHEN TRYING TO START. A VOLTAGE DIP IS CAUSING THE IGNITION PROCEDURE TO FAIL. *RM Read More »

    ELECTRICAL SYSTEM:IGNITION:MODULE

    • TSB #LI-07-08

      Date Announced:
      DEC 08, 2010
      NHTSA ID:
      #10038227

      MERCEDES-BENZ: THE STARTER CLICKS BUT DOES NOT CRANK WHEN TRYING TO START. A VOLTAGE DIP IS CAUSING THE IGNITION PROCEDURE TO FAIL. *RM Read More »

    ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

    • TSB #LI-47-50

      Date Announced:
      MAR 09, 2011
      NHTSA ID:
      #10041024

      MERCEDES-BENZ: THE FUEL LEVEL INDICATOR IS WRONG. Read More »

    • TSB #P-049567

      Date Announced:
      JUN 07, 2010
      NHTSA ID:
      #10034152

      MERCEDES: BATTERY SYMBOL AND SERVICE REQUIRED (IN WHITE). FAULT MESSAGE IS DISPLAYED IF THE CHARGE LEVEL IS TOO LOW OR THE PARK PAWL ADDITIONAL BATTERY IS DEFECTIVE. Read More »

    ELECTRICAL SYSTEM:SOFTWARE

    • TSB #LI30.30-P-055823

      Date Announced:
      FEB 11, 2014
      NHTSA ID:
      #10166988

      Collision Prevention Assist (CPA) may warn for no obvious reason (optical and/or acoustic warning message). Read More »

    • TSB #LI8270P055572

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

      Mobile phone cotacts are not transferred completely. Read More »

    • TSB #SCB-2010110005

      Date Announced:
      MAY 01, 2011
      NHTSA ID:
      #10041269

      MERCEDES BENZ: THERE IS A SOFTWARE PROBLEM RELATING TO THE TANK HEATER LINES. *RM Read More »

    • TSB #SB-20101100005

      Date Announced:
      DEC 01, 2010
      NHTSA ID:
      #10038218

      MERCEDES-BENZ: SOFTWARE UPDATE FOR HEATER LINES. *RM Read More »

    • TSB #SB-2009070002

      Date Announced:
      OCT 01, 2009
      NHTSA ID:
      #10032768

      MERCEDES: IT HAS BEEN DETERMINED THAT IN THE AFFECTED VEHICLES AN INCREASED NO LOAD CURRENT MAY OCCUR FROM REPEATED OPENING AND CLOSING OF THE LIFT GATE, USING THE KEY REMOTE, OR THE LIFT GATE LOCK SWITCH OVERSHOOTS THE SWITCHING RANGE. Read More »

    EXTERIOR LIGHTING:HEADLIGHTS

    VISIBILITY:WINDSHIELD WIPER/WASHER

    • TSB #SB-82-30-366E

      Date Announced:
      JUN 04, 2009
      NHTSA ID:
      #10033071

      MERCEDES BENZ: ADJUSTING WIPER ARMS. IF YOU RECEIVE REPORTS ON CERTAIN VEHICLES OF WIPERS CHATTERING/NOISY, PROCEED AS FOLLOWS: INSPECT WIPER BLADES/INSERTS FOR WEAR AND REPLACE; THOROUGHLY CLEAN WINDSHIELD; VERIFY USE OF CORRECT WASHER ... Read More »

    VISIBILITY:REAR WINDOW WIPER/WASHER

    • TSB #LI82-30-P-045348

      Date Announced:
      FEB 05, 2010
      NHTSA ID:
      #10034626

      MERCEDES (XENTRY): REAR WINDOW WIPER FAILS TO FUNCTION OR STOPS INTERMITTENTLY. LOW VOLTAGE CUTOFF RELAY IN THE REAR FUSE AND RELAY BLOCK (REAR (SRB). ONLY PART NUMBER A164 540 02 72 CAUSES THIS CONDITION. Read More »

    • TSB #SB-82-30-366E

      Date Announced:
      JUN 04, 2009
      NHTSA ID:
      #10033071

      MERCEDES BENZ: ADJUSTING WIPER ARMS. IF YOU RECEIVE REPORTS ON CERTAIN VEHICLES OF WIPERS CHATTERING/NOISY, PROCEED AS FOLLOWS: INSPECT WIPER BLADES/INSERTS FOR WEAR AND REPLACE; THOROUGHLY CLEAN WINDSHIELD; VERIFY USE OF CORRECT WASHER ... Read More »

    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 »

    • TSB #SB-91-60-193

      Date Announced:
      JUN 11, 2010
      NHTSA ID:
      #10034306

      MERCEDES: AIRBAG DURABILITY AND RELIABILITY. AIR BAG SRS CONTROL MODULE (N2/2) DOES NOT HAVE A SET SHELF LIFE AND WILL NORMALLY BE RELIABLE FOR THE LIFE OF A VEHICLE. Read More »

    SEAT BELTS:FRONT

    • TSB #LI-91-40-P050718

      Date Announced:
      APR 05, 2012
      NHTSA ID:
      #10042607

      XENTRY(MERCEDES): BULLETIN PROVIDED REGARDING CONTROL UNIT DETECTING AN UNDERVOLTAGE AFTER BUCKLING UP (BELT SLACK ELIMINATION) DURING SEAT BELT ADJUSTMENT SEQUENCE. *PE UPDATED 5/23/12. Read More »

    STRUCTURE:BODY:DOOR

    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 #LI91.22-P-059388

      Date Announced:
      JUL 12, 2014
      NHTSA ID:
      #10166097

      Electric motor for the folding rear backrest of the 3rd seat row is inoperative or makes noises during adjustment Read More »

    • TSB #LI91.12-P-059378

      Date Announced:
      JUL 09, 2014
      NHTSA ID:
      #10166096

      The release loop of the Easy Entry seat in the 2nd seat row is awkward to operate as it is difficult to access Read More »

    SEATS:FRONT ASSEMBLY:POWER ADJUST

    LANE DEPARTURE

    • TSB #LI30.30-P-055823

      Date Announced:
      FEB 11, 2014
      NHTSA ID:
      #10166988

      Collision Prevention Assist (CPA) may warn for no obvious reason (optical and/or acoustic warning message). Read More »

    INTERIOR LIGHTING

    EQUIPMENT

    • 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 #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 #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:OTHER:OWNERS/SERVICE/OTHER MANUAL

    • TSB #C1A140101

      Date Announced:
      FEB 07, 2014
      NHTSA ID:
      #10059536

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

    • TSB #SB-91-40-192

      Date Announced:
      MAR 16, 2010
      NHTSA ID:
      #10034104

      MERCEDES: REPLACING THE EMERGENCY TENSIONING RETRACTOR. WHEN REPLACING THE LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR (A76) OR THE RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR (A76/1), RETURN THE DAMAGED PART TO THE ... Read More »

    • TSB #TSB-2009020004

      Date Announced:
      MAR 01, 2009
      NHTSA ID:
      #10030665

      MERCEDES: IT HAS BEEN DETERMINED THAT THE TELE AID MAY NOT FUNCTION PROPERLY AS A RESULT OF A HARDWARE FAULT IN THE TELE AID CONTROL MODULE. Read More »

    EQUIPMENT ADAPTIVE/MOBILITY

    • TSB #LI-68-50

      Date Announced:
      DEC 10, 2010
      NHTSA ID:
      #10037985

      MERCEDES-BENZ: THE LOAD COMPARTMENT ROLLER BLIND HAS CATCH BOLTS LOOSE OR BROKEN FROM IMPROPER FORCE WHEN USING. *RM Read More »

    EQUIPMENT:APPLIANCE:AIR CONDITIONER

    • TSB #LI8330P0496447

      Date Announced:
      NOV 15, 2016
      NHTSA ID:
      #10205249

      No cooling output, fault code 9006 stored in air conditioning control unit. Read More »

    UNKNOWN OR OTHER

    • TSB #TSB-2009020004

      Date Announced:
      MAR 01, 2009
      NHTSA ID:
      #10030665

      MERCEDES: IT HAS BEEN DETERMINED THAT THE TELE AID MAY NOT FUNCTION PROPERLY AS A RESULT OF A HARDWARE FAULT IN THE TELE AID CONTROL MODULE. Read More »

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