2012 Mercedes-Benz CLS550 Technical Service Bulletins

111 technical service bulletins (TSBs) are on record for the 2012 Mercedes-Benz CLS550. 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.

• 10207199Jan 9, 2022Electrical system. 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. When comparing the range between the integrated GTO and the garage door hand transmitter, the garage door hand transmitter is tested outside the vehicle. 3. The garage door hand transmitter is being…
• 10186141Dec 10, 2020Electrical system. NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock
• 10186135Dec 9, 2020Brakes, Electronic stability control. 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
• 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.
• 10160730Apr 25, 2019Visibility (wipers, defrost, mirrors), Equipment. Window lifter inoperative
• 10160738Apr 11, 2019Electrical system, Engine. Update engine electronics (ME-SFI) control unit software
• 10160625Apr 5, 2019Suspension. Thumping noises from rear axle shock absorber
• 10155128Feb 1, 2019Body and structure. Thumping noises from rear axle damper
• 10155126Jan 30, 2019Electrical system. Model series 257: In the Edition 1, the Welcome graphic is not displayed in the instrument cluster with the specific Edition animation.
• 10154023Jan 25, 2019Brakes. ESP, BAS, PRE-SAFE - Fault message in instrument cluster
• 10154018Jan 25, 2019Engine, Brakes. ESP, BAS, PRE-SAFE - Fault message in instrument cluster
• 10151959Jul 23, 2018Seat belts. Seat belt extender toothed rack sluggish or makes noises
• 10151941Jul 12, 2018Equipment. Inductive charging: iPhone is not reliably charged
• 10151926Jul 3, 2018Electrical system, Lane departure, Brakes. Warnings without obvious cause from front parking sensors in vehicles with AMG Styling Package (SA code 772)
• 10144131May 11, 2018Body and structure. Trunk lid cannot be closed
• 10158329Oct 9, 2017Engine. Oil in engine wiring harness
• 10205147Nov 14, 2016Engine cooling. Ticking or pulsing noise from high-pressure pump and/or fuel injectors.
• 10205247Aug 25, 2016Equipment. Traffic information service and posibly the voice control, nonfunctional after navigation software update.
• 10205239Aug 16, 2016Equipment. "Anti-theft protection activated".
• 10135628Oct 14, 2014Equipment. iPhone mobile phone: Various complaints after software update to iOS8
• 10056476Sep 22, 2014Steering, Electrical system. Xentry (mercedes): power steering malfunction, service required, is displayed in instrument cluster, after engine has started, and have acoustic warning sounds at same time, with excessive resistance of steering. Model 242.
• 10166092Jul 12, 2014Seats. Dynamic seat control is not functioning correctly and/or air cushions do not inflate fully.
• 10166080Jul 12, 2014Seats. The pneumatic 4-way lumbar support fails. Lumbar support pockets cannot be filled up or they drain.
• 10166099Jul 10, 2014Seats. Pneumatic comfort systems with insufficient performance, entirely inoperative or leaky.
• 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.
• 10136016Jun 12, 2014Body and structure. Clearcoat peeling / flaking / bubbling
• 10167488Mar 21, 2014Engine cooling. Engine rattling noise after engine start for several seconds
• 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.
• 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.
• 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.
• 10167510Feb 28, 2014Transmission and drivetrain, Electrical system. 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. Gear selection is not possible. and/or Rear window wiper inoperative. and/or Various fault codes concerning disrupted communication paths are stored and/or the corresponding control units are not displayed in…
• 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.
• 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
• 10167000Feb 18, 2014Steering. Surface damage on steering wheel trim
• 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.
• 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.
• 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.
• 10205234Aug 21, 2013Electrical system. Software update of COMAND Online control unit.
• 10205237Aug 5, 2013Electrical system. The COMAND unit does not start or the display remains dark.
• 10205236Aug 5, 2013Electrical system. "Metadata loss- Please reimport all media data".
• 10167546Jul 30, 2013Transmission and drivetrain. 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. One possible additional customer complaint could be "poor acceleration" e.g. due to engine intervention. This can affect all NAT2FE+ (7G-TRONIC PLUS) vehicles with engines OM651, OM642LS and M278 in the production period from 04/2011 to…

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