2012 Mercedes-Benz CLS550 service bulletins & manufacturer communications
108 manufacturer communications are on file with NHTSA for the 2012 Mercedes-Benz CLS550. TSBs are repair guidance for dealers — they are not recalls, and repairs are not automatically free.
Technical service bulletin 105Warranty extension 2Service campaign 1
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of trave…LI35.30-P-058566 · Technical service bulletin · Power Train · issued Jul 14, 2026
- Complaint After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the message "SOS - service not activated" appears on the instrument …LI82.85-P-080507 · Technical service bulletin · Electrical System · issued May 26, 2026
- Complaint The customer requests deactivation of the N112/9 HERMES communication module Note: Deactivation of the HERMES control unit (N112/9) is not supported for gray-market vehic…LI82.85-P-080559 · Technical service bulletin · Electrical System · issued May 26, 2026
- Complaint There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper blades squeaking, chattering, shuddering B: The windshield is not …LI82.30-P-059239 · Technical service bulletin · Visibility/wiper · issued May 19, 2026
- Complaint Headlamp, front fog lamp leaky or fogged. Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to a…LI82.10-P-078301 · Technical service bulletin · Exterior Lighting · issued Apr 16, 2026
- Complaint Headlamp, front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to an…LI82.10-P-078301 · Technical service bulletin · Exterior Lighting · issued Mar 9, 2026
- Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, …LI82.10-P-078307 · Technical service bulletin · Exterior Lighting · issued Feb 25, 2026
- Complaint Headlamp, front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to an…LI82.10-P-078301 · Technical service bulletin · Exterior Lighting · issued Feb 24, 2026
- Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, …LI82.10-P-078896 · Technical service bulletin · Exterior Lighting · issued Feb 24, 2026
- Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No ca mera image is displayed in the head unit. The rever…LI54.65-P-066284 · Technical service bulletin · Electrical System · issued Dec 18, 2025
- Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (…LI33.30-P-056665 · Technical service bulletin · Power Train · issued Nov 15, 2025
- Complaint Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick test and/or no communication possible with VGS. Cause Transmission…LI27.19-P-072588 · Technical service bulletin · Power Train · issued Sep 17, 2025
- Complaint Commissioning not possible after replacement of TRANSMISSION 722.9 or of electrohydraulic controller unit (EHS) or of repair kit controller unit (VGS). Cause The wrong ol…LI27.19-P-074985 · Technical service bulletin · Electrical System · issued Jul 16, 2025
- Complaint After a software update of HERMES communication module N112/9 has been performed on a gray import vehicle, the message "SOS - Service not activated" is displayed in the i…LI82.85-P-079271 · Technical service bulletin · Electrical System · issued May 22, 2025
- Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (…LI33.30-P-056665 · Technical service bulletin · Power Train · issued May 21, 2025
- Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, …LI82.10-P-078896 · Technical service bulletin · Exterior Lighting · issued Apr 28, 2025
- Complaint Headlamp, front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to an…LI82.10-P-078301 · Technical service bulletin · Exterior Lighting · issued Apr 28, 2025
- Complaint Vehicle with atypical reduced heat output. Cause Silicate granulate may have escaped from a damaged bag in the expansion reservoir (not visible), reducing the coolant flo…LI83.20-P-051802 · Technical service bulletin · Engine · issued Apr 1, 2025
- Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during …LI82.70-P-077433 · Technical service bulletin · Electrical System · issued Mar 5, 2025
- Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No camera image is displayed in the head unit. The revers…LI54.65-P-066284 · Technical service bulletin · Electrical System · issued Feb 24, 2025
- Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No camera image is displayed in the head unit. The revers…LI54.65-P-066284 · Technical service bulletin · Electrical System · issued Feb 24, 2025
- Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (…LI33.30-P-056665 · Technical service bulletin · Power Train · issued Jan 16, 2025
- Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing directio…LI35.30-P-058566 · Technical service bulletin · Power Train · issued Jan 15, 2025
- Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No camera image is displayed in the head unit. The revers…LI54.65-P-066284 · Technical service bulletin · Electrical System · issued Jan 15, 2025
- Complaint The flap of the reversing camera opens and closes by itself during forward travel. This happens several times during the trip. The customer notices the sound of opening a…LI54.65-P-066284 · Technical service bulletin · Electrical System · issued Nov 25, 2024
- Complaint Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick test and/or no communication possible with VGS. Cause Transmission…LI27.19-P-072588 · Technical service bulletin · Power Train · issued Nov 20, 2024
- Complaint Washer fluid system leaks Cause Various possible causes: 1. Washer fluid reservoir itself. 2. Seal on washer fluid pump/washer fluid reservoir. 3. Washer fluid pump. 3.1.…LI82.35-P-078467 · Technical service bulletin · Structure · issued Oct 23, 2024
- Complaint "Active Emergency Stop Assist Currently Unavailable" and "Active Steering Assist Inoperative" instrument cluster messages along with Tire Pressure Light on in Instrument …LI54.71-P-078498 · Technical service bulletin · Electrical System · issued Oct 16, 2024
- Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during …LI82.70-P-077433 · Technical service bulletin · Electrical System · issued Sep 28, 2024
- Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, …LI82.10-P-078307 · Technical service bulletin · Exterior Lighting · issued Sep 21, 2024
- Complaint Headlamps fogged or droplets forming. Cause Due to its outlet openings, the headlamp is an "open system". This means that acidic gases, moisture, dirt and exhaust gases c…LI82.10-P-078302 · Technical service bulletin · Exterior Lighting · issued Sep 10, 2024
- Complaint Headlamp or front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to …LI82.10-P-078301 · Technical service bulletin · Exterior Lighting · issued Sep 10, 2024
- Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) C-Class, E-Class, S-Class, G-Class, CL, CLS, ML, GL, GLE, GL…NCU - 2022080005 · Service campaign · Electrical System · issued Aug 10, 2024
- In our continuing efforts to ensure the proper performance and quality of your vehicle, we are writing to inform you that on certain Model Year 2011-2018 C-Class, E-Class, S-Class,…CL - 2022080005 · Technical service bulletin · Electrical System · issued Aug 9, 2024
- Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any …LI82.10-P-078069 · Technical service bulletin · Exterior Lighting · issued Jul 23, 2024
- Crease formation on genuine leather seat covers in vehicles with low mileage â ¢ Objects left on the seats for extended periods of time (pressure marks). â ¢ Objects wedged b…LI91.18-P-077075 · Technical service bulletin · Seats · issued Dec 4, 2023
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA ("MBUSA") is extending the …CL-Exhaust Valve Assembly · Technical service bulletin · Engine · issued Sep 6, 2023
- This NCU replaces the prior NCU issued on March 10, 2023, and contains clarification on reimbursement timeline and removal of damage codes related to intake valves/guide. In our co…EW-Exhaust Valve Assembly · Warranty extension · Engine · issued Sep 6, 2023
- The Mercedes me connect services cannot be activated. The remote status data does not update. Error in N112/9 - control unit for telematics services (HERMES). In the HERMES control…LI82.85-P-076799 · Technical service bulletin · Equipment · issued Aug 18, 2023
- This NCU replaces the prior NCU issued on May 11, 2023, and clarifies replacement part information. In our continuing efforts to assure the proper performance of Mercedes-Benz prod…ELW - M278 Cat · Technical service bulletin · Engine and Engine Cooling · issued Jul 27, 2023
- This extended warranty applies to the following condition that may necessitate the repair or replacement of the catalytic converter system and is related to: â ¢ A check engine Mal…ELW-M278Catalyst · Technical service bulletin · Engine and Engine Cooling · issued May 11, 2023
- Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles …CL-ELWSubframe · Technical service bulletin · Equipment · issued Mar 31, 2023
- 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 …CL-ELWExhaustVal · Technical service bulletin · Engine and Engine Cooling · issued Mar 30, 2023
- Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles …ELW-RearSubframe · Technical service bulletin · Structure · issued Mar 10, 2023
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (â MBUSAâ ) is extendi…ELW-ExhaustValve · Technical service bulletin · Engine and Engine Cooling · issued Mar 10, 2023
- Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles …ELW-RearSubframe · Technical service bulletin · Structure · issued Feb 10, 2023
- Complaint The garage door hand transmitter cannot be initialized with the integrated garage door opener in the inside rearview mirror. Cause 1. The integrated garage door opener (G…LI68.05-P-060306 · Technical service bulletin · Electrical System · issued Jan 27, 2022
- 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 …LI68.05-P-060307 · Technical service bulletin · Electrical System · issued Jan 9, 2022
- NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clockLI54.30-P-072145 · Technical service bulletin · Electrical System · issued Dec 10, 2020
- 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 unitLI42.47-P-067502 · Technical service bulletin · Electronic Stability Control · issued Dec 9, 2020
- 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 ca…EW - HVAC Service · Warranty extension · Visibility/wiper · issued Oct 29, 2020
- Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctionalLI82.85-P-071453 · Technical service bulletin · Equipment · issued Jul 31, 2020
- 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 particularl…NCU-2019080019 · Technical service bulletin · Steering · issued Jul 10, 2020
- 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. …LI82.10-P-064766 · Technical service bulletin · Exterior Lighting · issued Jun 30, 2020
- 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 settlemen…NCU - HVAC Warra · Technical service bulletin · Equipment · issued May 21, 2020
- Window lifter inoperativeLI72 40-P-069669 · Technical service bulletin · Equipment · issued Apr 25, 2019
- Update engine electronics (ME-SFI) control unit softwareSC-2019040001 · Technical service bulletin · Electrical System · issued Apr 11, 2019
- Thumping noises from rear axle shock absorberLI32 25-P-066246 · Technical service bulletin · Suspension · issued Apr 5, 2019
- Thumping noises from rear axle damperLI32-25-P-066246 · Technical service bulletin · Structure · issued Feb 1, 2019
- Model series 257: In the Edition 1, the Welcome graphic is not displayed in the instrument cluster with the specific Edition animation.LI54-30-P-068844 · Technical service bulletin · Electrical System · issued Jan 30, 2019
- ESP, BAS, PRE-SAFE - Fault message in instrument clusterLI5418P067550v5 · Technical service bulletin · Service Brakes · issued Jan 25, 2019
- ESP, BAS, PRE-SAFE - Fault message in instrument clusterLI5418P067550 · Technical service bulletin · Service Brakes · issued Jan 25, 2019
- Seat belt extender toothed rack sluggish or makes noisesLI91 45-P-066075 · Technical service bulletin · Seat Belts · issued Jul 23, 2018
- Inductive charging: iPhone is not reliably chargedLI82 70-P-067429 · Technical service bulletin · Equipment · issued Jul 12, 2018
- Warnings without obvious cause from front parking sensors in vehicles with AMG Styling Package (SA code 772)LI54 65-P-068316 · Technical service bulletin · Lane Departure · issued Jul 3, 2018
- Trunk lid cannot be closedLI80.61-P-068096 · Technical service bulletin · Structure · issued May 11, 2018
- Oil in engine wiring harnessLI05 20-P-067123 · Technical service bulletin · Engine · issued Oct 9, 2017
- Ticking or pulsing noise from high-pressure pump and/or fuel injectors.LI0702P0547173 · Technical service bulletin · Engine and Engine Cooling · issued Nov 14, 2016
- Traffic information service and posibly the voice control, nonfunctional after navigation software update.LI8285P0647651 · Technical service bulletin · Equipment · issued Aug 25, 2016
- "Anti-theft protection activated".LI8285P0581859 · Technical service bulletin · Equipment · issued Aug 16, 2016
- iPhone mobile phone: Various complaints after software update to iOS8LI82.70-P-060004 · Technical service bulletin · Equipment · issued Oct 14, 2014
- 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 e…LI-46-35P059463 · Technical service bulletin · Steering · issued Sep 22, 2014
- Dynamic seat control is not functioning correctly and/or air cushions do not inflate fully.LI91.10-P-059386 · Technical service bulletin · Seats · issued Jul 12, 2014
- The pneumatic 4-way lumbar support fails. Lumbar support pockets cannot be filled up or they drain.LI91.10-P-048411 · Technical service bulletin · Seats · issued Jul 12, 2014
- Pneumatic comfort systems with insufficient performance, entirely inoperative or leaky.LI91.25-P-059380 · Technical service bulletin · Seats · issued Jul 10, 2014
- Xentry (mercedes): after engine has started, several issues occurs, an acoustic warning sounds is heard, the instrument cluster displays warning message power steering malfunction,…LI46-35P059241 · Technical service bulletin · Steering · issued Jun 20, 2014
- Clearcoat peeling / flaking / bubblingLI98.00-P-058914 · Technical service bulletin · Structure · issued Jun 12, 2014
- Engine rattling noise after engine start for several secondsLI05.10-P-056435 · Technical service bulletin · Engine and Engine Cooling · issued Mar 21, 2014
- 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. R…LI01.30-P-058630 · Technical service bulletin · Fuel System, Gasoline · issued Mar 21, 2014
- ESP warning message in instrument cluster. One of the fault codes C219700 or 630900 is logged in the ESP control unit (N30/4).LI30.20-P-058689 · Technical service bulletin · Electrical System · issued Mar 13, 2014
- 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. *peLI-30-20P058689 · Technical service bulletin · Engine · issued Mar 13, 2014
- 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.LI82.85-P-058582 · Technical service bulletin · Equipment · issued Mar 3, 2014
- 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 display…LI54.15-P-057373 · Technical service bulletin · Power Train · issued Feb 28, 2014
- 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. …LI54-15-P057373 · Technical service bulletin · Electrical System · issued Feb 28, 2014
- Blind Spot Assist inoperative.LI54.71-P-056477 · Technical service bulletin · Lane Departure · issued Feb 25, 2014
- 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.LI49.20-P-056353 · Technical service bulletin · Electrical System · issued Feb 25, 2014
- Creaking noise when making vertical or longitudinal adjustment to electrical steering columnLI46.15-P-058505 · Technical service bulletin · Steering · issued Feb 25, 2014
- Surface damage on steering wheel trimLI46.10-P-057961 · Technical service bulletin · Steering · issued Feb 18, 2014
- 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.LI49.20-P-056353 · Technical service bulletin · Electrical System · issued Feb 12, 2014
- 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 e…C1A140101 · Technical service bulletin · Equipment · issued Feb 11, 2014
- 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…LI54.25-P-056472 · Technical service bulletin · Electrical System · issued Feb 10, 2014
- Message in instrument cluster "DISTRONIC PLUSCurrently Unavailable - See Owner's Manual"GI88.40-P-057430 · Technical service bulletin · Equipment · issued Feb 3, 2014
- 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 curren…S-SC- 2013090008 · Technical service bulletin · Electrical System · issued Feb 1, 2014
- Software update of COMAND Online control unit.LI8270P056963 · Technical service bulletin · Electrical System · issued Aug 21, 2013
- The COMAND unit does not start or the display remains dark.LI8285P055695 · Technical service bulletin · Electrical System · issued Aug 5, 2013
- "Metadata loss- Please reimport all media data".LI8285P053927 · Technical service bulletin · Electrical System · issued Aug 5, 2013
- 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. On…LI27.20-P-055758 · Technical service bulletin · Power Train · issued Jul 30, 2013
- 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, …LI27.50-P-056467 · Technical service bulletin · Power Train · issued Jul 26, 2013
- Customer experiences low battery conditions, resulting in jump starts, and eventually requiring battery replacement.LI82.95-P-056655 · Technical service bulletin · Electrical System · issued Jul 12, 2013
- Engine diagnosis warning lamp activated. Fault code P045600 "Very fine leak" or P044200 "Fine leak" stored in engine control unit.LI47.40-P-053871 · Technical service bulletin · Engine and Engine Cooling · issued Jul 10, 2013
- Glove box squeaks/rattles at top left mounting.LI68.10-P-056727 · Technical service bulletin · Equipment · issued Jul 9, 2013
- 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 inter…LI82.85-P-055695 · Technical service bulletin · Electrical System · issued Jul 8, 2013
- Outside mirror fogged.LI8870P056690 · Technical service bulletin · Visibility · issued Jul 3, 2013
- Summary to be provided on a future date.S-B-80.61/61A · Technical service bulletin · Electrical System · issued Apr 2, 2013
- Engine makes intermittent knocking noise, ticking/cracklingLI03.20-P-048278 · Technical service bulletin · Engine and Engine Cooling · issued Mar 26, 2013
- Summary to be provided on a future date.2012110003 · Technical service bulletin · Engine · issued Nov 21, 2012
- Summary to be provided on a future date.2012110003 · Technical service bulletin · Engine · issued Nov 1, 2012
- Xentry (mercedes): after taking vehicle out transport mode, instrument cluster displays message sos mbrace service not activated. Models 2013 166, 172, 204, 207, 212, 218, 231, 463…LI82-95-P054406 · Technical service bulletin · Electrical System · issued Aug 10, 2012