2017 Mercedes-Benz GLS 550 technical service bulletins
82 technical service bulletins and manufacturer communications cover the 2017 Mercedes-Benz GLS 550, including one warranty extension.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Visibility/wiper
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9G‑TRONIC automatic...
- 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...
- During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time
- 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...
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements...
- The customer requests deactivation of the N112/9 HERMES communication module Note: Deactivation of the...
- 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,...
- The part numbers listed in the chart below should no longer be installed, and any existing stock must be...
- Headlamp, front fog lamp leaky or fogged
- Headlamp, front fog lamp leaky or fogged
- Headlamps leaking or fogged
- Check engine light on with the following fault is current in the VGS Control Unit: P084300 Oil pressure...
- (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...
- 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)
- Headlamp, front fog lamp leaky 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...
- Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements
- Fuel door may require several attempts to open
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- The flap of the reversing camera opens and closes by itself during forward travel several times during the...
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- The flap of the reversing camera opens and closes by itself during forward travel
- 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
- Washer fluid system leaks
- Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements
- 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...
- Headlamps fogged or droplets forming
- Electrical system
- In our continuing efforts to ensure the proper performance and quality of your vehicle, we are writing to...
- Rear lamps fogged up/not leaktight
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G-TRONIC automatic...
- This is to notify you of an Emission Service Campaign launch to update the Engine Control Unit software on...
- 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
- MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 – Boost Pressure is Too High"" "
- Model series 167 noise on B/C/D pillars.
- For plug in hybrid and electric variants: Complaints about the electric range
- Model indicator index.
- Electrical system: software
- Creaking noise from fixed glass section of panoramic roof in area of rear passenger compartment grab handles
- Replace tank filler recess and information labels
- To enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its...
- Information Label on Tire Sealant
- 167 GLS headlight low beam fault
- Vehicle does not start, battery discharged.
- Fault message "AIRMATIC" or "Active Curve System" in instrument cluster
- Correct Torque of Front Left and Right Torsion (Stabilizer) Bar Linkage Nut
- Replace Fasteners for Rear Axle Camber Adjustment
- Ticking or pulsing noise from high-pressure pump and/or fuel injectors.
- Engine fan runs continuously, a/c inoperable or, engine light illuminates sporadically.
- Gasket may settle causing a slight oil leak.
- Minor leaks at the oil duct of the left or right cylinder head of engines 157, 276 and 278
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