2019 Mercedes-Benz G 550 technical service bulletins
146 technical service bulletins and manufacturer communications cover the 2019 Mercedes-Benz G 550, including 5 warranty extensions.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz...
- Fuel/propulsion system
- In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the...
- Engine
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the...
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9G‑TRONIC automatic...
- Noises in the steering column area when steering
- Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is...
- Only vehicles with a variable transfer case are affected
- Clanking noise from the area of the speakers in the doors
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G‑TRONIC automatic...
- Consistently reproducible erroneous parktronic warnings from front with every key cycle
- 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active...
- Oil leaks found on M176 or M177 engines diagnosed to be from the cylinder head cover area
- A popup is seen on the HU with the message "data connection temporarily not available". Potentially...
- This document is intended as a pre-case diagnostic reference for transmission related concerns
- Mercedes-Benz USA is currently experiencing limited availability of transmission fluid specification ATF...
- Check Engine Light ON with DTC P012800 "The Coolant Temperature is Below the Specified Temperature" active...
- Engine
- Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed,...
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Service code B1 displayed in the customer menu does not match the workshop code displayed in the workshop...
- After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the...
- Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed,...
- Harsh upshifts, downshifts, or jolting in lower gears when accelerating
- The part numbers listed in the chart below should no longer be installed, and any existing stock must be...
- Water ingress in the load compartment between the C and D pillars
- The intent of
- CEL ON with DTC P012800 "The Coolant Temperature is Below the Specified Temperature" active and stored in...
- Headlamp, front fog lamp leaky or fogged
- Headlamp, front fog lamp leaky or fogged
- 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active...
- Engine
- After removing the transport protection from new vehicles, localized cloudy spots or streaks may appear on...
- Water ingress at the sliding sunroof can lead to moisture in the interior
- Check engine light on with the following fault is current in the VGS Control Unit: P084300 Oil pressure...
- CEL on with Code P012800 "The Coolant Temperature is Below the Specified Temperature"
- Customer states check engine light on in the dash
- Customer states the AC either does not cool/has poor performance or heat is insufficient
- Customer reports illuminated CEL. Additionally no start condition, lack of power, failure to recover from...
- (Original LI document #: LI27.35-P-079039) Clicking noises from the electro-hydraulic control unit (EHS)...
- Possible complaints about shift quality, issues with learning the park lock, and slipping/rinse entries in...
- USB port not functioning properly
- At low speeds and light brake pressure, brakes will make a groaning or honking noise
- Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick...
- Customer complains of oil use, oil leaking or oil smell
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the...
- After a software update of HERMES communication module N112/9 has been performed on a gray import vehicle,...
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- The result from the XENTRY battery test does not match the current state of the battery
- Headlamp, front fog lamp leaky or fogged
- Headlamps leaking or fogged
- A popup is seen on the HU with the message "data connection temporarily not available". Potentially...
- A clicking/ticking/taping noise from underneath the vehicle with engine off during ECO stop event or after...
- During a phone call, the called party has difficulty understanding/cannot understand the driver, or...
- Electrical system
- On certain Model Year 2019
- Electrical system
- The
- Play noticeable in the height adjustment of the steering column
- After a control unit replacement of "N112/9
- Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick...
- Only vehicles with a variable transfer case are affected
- Engine
- Washer fluid system leaks
- White plastic insert present on microphone assembly
- When unpacking vehicles with magno night black paint (code 056U) from the full transportation packaging,...
- "Active Distance Assist currently unavailable" and "Active Brake Assist functions currently limited" are...
- Customer states check engine light is on. Cause Software needs to be updated
- Engine does not restart after ECO stop
- Damage or discoloration to paint protection films on vehicle
- Headlamp or front fog lamp leaky or fogged
- To insure vehicle down time is kept at a minimum and all required information is available when case is...
- Rear lamps fogged up/not leaktight
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G-TRONIC automatic...
- The customer complains of a check engine light (CEL) on. May also complain of the engine running roughly...
- Electrical system
- The steering wheel generates grinding noises between the steering wheel and steering column switch module...
- Noises in the steering column area when steering
- Electrical system
- Crease formation on genuine leather seat covers in vehicles with low mileage ⢠Objects left on the seats...
- The "SOS nonfunctional" message appears sporadically in the instrument cluster of the vehicle
- Electrical system
- Customer reports illuminated CEL. Additionally no start condition, lack of power, failure to recover from...
- Tailgate opens unintentionally
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- Customer may have one or more of the following complaints: • Vehicle location is shown incorrectly in the...
- Engine does not restart after ECO stop
- Difficult to open the rear-end (tailgate) door with the door handle
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the...
- Customer reports a warning message in red in the instrument cluster: "Water fording not possible! Service...
- Creaking noise from the upper area of the instrument panel when driving off-road (see Video 1). This noise...
- A metallic buzzing/background noise in the door whenever the sound system is active may be heard
- Windshield heater not activating when expected
- It may not be possible to unlock the vehicle with the key
- Customer states Check Engine Light is on. Related to alternator and charge status of battery
- MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 – Boost Pressure is Too High"" "
- Creaking or scratching noise heard through speakers during gear shifts "
- New service campaign launch information.
- The mobile phone address book may not be transferred completely to the multimedia system COMAND, Audio 20,...
- Water entry at sliding sunroof.
- When driving over speed limiters, speed bumps or rough roads;knocking noises may be heard from the rear...
- Free browsing, Internet access via Wi-Fi hotspot and Internet radio nonfunctional"
- An engine misfire may be detected due to engine software coding error
- When accelerating at low speeds (slow roll at < 9 mph, 2nd gear), the engine limp-home mode may be...
- When accelerating at low speeds (slow roll at less than 9 mph, 2nd gear), the engine limp-home mode may be...
- G-MOPF2018
- Fuel system, gasoline
- Replace exhaust gas cleaning information label
- Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect...
- Information Label on Tire Sealant
- Vehicle interior whistling noises (even at stand-still) and high cabin interior pressure
- Update Powertrain Control Unit (PTCU) Software
- Outside mirror folding out/in nonfunctional
- Head-up display (HUD) code 463 ? lines on the display, display flickers
- G - my 19
- Windshield wiper motor makes noise
- G Facelift 2018: Knocking noises from rear area on rough roads
- Whistling noise in interior (even at standstill) / high internal cabin pressure
- Carbon fiber repair on fender flares
- Anti-theft protection activated".
- Gasket may settle causing a slight oil leak.
- Engine diagnosis warning lamp lights up
- Metadata loss- Please reimport all media data".
- The COMAND unit does not start or the display remains dark.
- Customer experiences low battery conditions, resulting in jump starts, and eventually requiring battery...
- The COMAND unit does not start or the COMAND display remains dark
VIN decoder
See the problems and recalls for an exact car
Buying a used 2019 Mercedes-Benz G 550?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history