2012 Mercedes-Benz ML350 Technical Service Bulletins

132 technical service bulletins (TSBs) are on record for the 2012 Mercedes-Benz ML350. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10184799Nov 11, 2020Engine cooling. Mercedes-Benz USA, LLC (?MBUSA?) has entered into an agreement with the United States Department of Justice (DOJ), the Environmental Protection Agency (EPA), the California Air Resources Board (CARB), and the California Attorney General?s Office (CA AG) regarding the emission control system in certain Mercedes-Benz diesel vehicles. As part of this agreement, MBUSA will offer field measures referred to as the…
• 11031656Nov 6, 2020Engine. Dear Mercedes-Benz Owner: The purpose of this letter is to advise you of additional benefits that Mercedes-Benz USA, LLC (“MBUSA”) is providing to you regarding your vehicle ownership. This warranty extension is fully independent of all provisions of the proposed settlements filed on September 14, 2020. Accepting this warranty extension does not affect your decisions, benefits, or rights under those proposed…
• 11031625Nov 6, 2020Engine. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2012-2016 Mercedes-Benz Model 212, 221, X204 and 166 vehicles (E250 BLUETEC, E250 4MATIC BLUETEC, E350 BLUETEC, S350 4MATIC BLUETEC, GLK250 4MATIC BLUETEC, ML250 4MATIC BLUETEC, ML350 4MATIC BLUETEC, GLE300 d 4MATIC and GL350 4MATIC BLUETEC), the warranty on the Pressure Sensor will be extended…
• 11031594Oct 29, 2020Visibility (wipers, defrost, mirrors). This NCU replaces the prior NCUs issued on May 18, June 25, 2020 and October 1, 2020 and contains important workshop instructions on how the HVAC Service Warranty repair must be carried out. 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…
• 10179966Jul 31, 2020Equipment, Other or unknown. Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctional
• 10178745Jul 10, 2020Equipment, Steering. The aluminum bolts of the steering gear housing cover and the aluminum bolts on the powerpack may corrode in corrosion-critical countries where exposed combination with particularly aggressive thawing agents (saltwater mixtures) in certain vehicles of the model series 166, 292, W/X 204, 212, 213, 205, 253, 218, 222, 217, 207. This fault pr expected in countries that do not use these thawing agents. In the case of…
• 10177571Jun 30, 2020Exterior lighting, Equipment. 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. Check housing cover of lamp unit for natural fogging or dew as per GI82.10-P-009047. . 1. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the…
• 10176670May 21, 2020Equipment. 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 type odors originating from the HVAC system in certain Mercedes-Benz vehicles.
• 10164811Aug 5, 2019Transmission and drivetrain. Throttle lift-off clunking noises at drive shafts of rear axle
• 10160738Apr 11, 2019Electrical system, Engine. Update engine electronics (ME-SFI) control unit software
• 10135598Mar 25, 2015Engine. Engine diagnosis warning lamp lights up in instrument cluster, fault code U145400: "Implausible data were received from the ethanol sensor"
• 10166104Jul 10, 2014Seats. The electric seat adjustment and/or the seat heater/seat ventilation or rear monitor is nonfunctional
• 10165840Jul 10, 2014Transmission and drivetrain. The 1-2, 2-3 and/or 3-4 acceleration upshift can be uncomfortable when the transmission oil is cold.
• 10165852Jul 9, 2014Equipment, Electrical system. Noise in center console area of W166.
• 10165851Jul 8, 2014Electrical system, Visibility (wipers, defrost, mirrors). Side windows may make noises when closing and opening, or reverse direction when closing.
• 10165850Jul 8, 2014Electrical system, Visibility (wipers, defrost, mirrors). Side windows may make noises when closing and opening, or reverse direction when closing.
• 10166077Jul 3, 2014Equipment. Oxidation products of the cavity preservation can enter the interior compartment via the air conditioning.
• 10165838Jul 2, 2014Fuel system. Fault code(s) 13BA00, 13BB00, 13BC00, 13BD00, 13BE00, 13BF00 - Maximum actuation period exceeded during zero quantity calibration for injector of cylinder x stored in engine control unit
• 10056472Jun 20, 2014Electrical system, Steering. 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. Model 117, 156, 176, 242, 246.
• 10167519Mar 25, 2014Body and structure. Belt holder/ retaining tab on side paneling in trunk is broken
• 10167502Mar 21, 2014Suspension. ACTIVE CURVE SYSTEM malfunction in instrument cluster in combination with the following fault codes in the ACS control unit: P100000: The oil pressure at the front axle is too low. (Veh. up to approx. 7/2012) P100200: The oil pressure at the rear axle is too low. (Veh. up to approx. 7/2012) P1C9C00: The oil pressure at the front axle is too low. (Current veh.) P1C9E00: The oil pressure at the rear axle is too low.
• 10167487Mar 21, 2014Fuel system, Electrical system. 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. Right cylinder head: Oil passage plug hole below high-pressure pump housing.
• 10167501Mar 20, 2014Suspension. Rumbling noises from the area of the front axle.
• 10167504Mar 14, 2014Transmission and drivetrain. Brake linings on rear axle exhibit differential wear
• 10167498Mar 13, 2014Electrical system. ESP warning message in instrument cluster. One of the fault codes C219700 or 630900 is logged in the ESP control unit (N30/4).
• 10056233Mar 13, 2014Vehicle speed control, Engine. Xentry (mercedes): in the instrument cluster, an esp warning due to implausible accelerator pedal signal received from engine control unit. Model 2012 172, 212, 218, 207, 204.
• 10167532Mar 10, 2014Equipment. 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. If required, these are still available for ordering. With XENTRY DVD 03/2014 a new telematics DVD with part number A 166 827 21 00 is being shipped. This telematics DVD replaces the previous telematics…
• 10167521Mar 4, 2014Visibility (wipers, defrost, mirrors), Body and structure. Cracking noises or squeaking noises at the doors in the area of the window frame while driving, especially when driving on rough roads.
• 10167513Mar 4, 2014Engine cooling. 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).
• 10167525Mar 3, 2014Equipment. 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.
• 10055333Feb 28, 2014Electrical system. 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. Model 2012-2013 204, 207, 212, 218, 231, 246, 176, 117, 172.
• 10167524Feb 27, 2014Equipment. Sound system: Intermittent loss of sound after engine start
• 10167019Feb 25, 2014Lane departure. Blind Spot Assist inoperative.
• 10167007Feb 25, 2014Electrical system. 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.
• 10167002Feb 25, 2014Steering. Creaking noise when making vertical or longitudinal adjustment to electrical steering column
• 10167042Feb 20, 2014Equipment. The complete headliner can no longer be replaced for loose headliner magnets. As described in AR68.30-P-4300GQ, 2-component adhesive A 005 989 09 71 is to be used for gluing on the headliner magnets. Any missing magnets can be reordered as of 03/2014.
• 10166999Feb 18, 2014Suspension. Cracking, clunking noise when braking the vehicle to a stop or when moving off, when the suspension compresses and rebounds at the front axle. Sometimes a single jolt can also be felt at the steering wheel.
• 10167014Feb 13, 2014Electrical system. The rear seat heating cannot be activated when the customer has set the ambiance illumination to "Neutral" and "Stage 1" or "Stage 2" in the instrument cluster.
• 10167006Feb 12, 2014Electrical system. 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.
• 10167041Feb 11, 2014Engine cooling. Oil spray or fouling on the ACTIVE CURVE SYSTEM is not related to leakage of the hydraulic pump.
• 10167012Feb 11, 2014Body and structure. The liftgate can no longer be opened when the ambiance illumination is set to stage 1 or 2.
• 10166975Feb 11, 2014Equipment. 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 Verizon Telematics systems. If the i-button call failed or if the customer was unable to perform the i-button call, the mbrace agent instructed the customer to make an appointment with…
• 10167015Feb 10, 2014Electrical system. 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.
• 10166980Feb 10, 2014Engine cooling. Traces of oil in area of oil cooler (inner V) on engine 642
• 10166978Feb 6, 2014Engine cooling. Engine diagnosis warning lamp lights up - Fault code entry (FC) 14A600 or 14A700
• 10166976Feb 3, 2014Equipment. Message in instrument cluster "DISTRONIC PLUSCurrently Unavailable - See Owner's Manual"
• 10167040Feb 1, 2014Electrical system. 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. An authorized Mercedes-Benz dealer will update the mbrace control module software at the next workshop visit.
• 10166990Dec 4, 2013Suspension. Thumping noises from front axle when driving over bumps on road.
• 10056064Dec 4, 2013Electrical system. Xentry (mercedes): between the front bumper to interior wiring harness, there may be corrosion at electrical connecting point.
• 10059574Sep 27, 2013Equipment, Electrical system. Summary to be provided on a future date.

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