2020 Mercedes-Benz GLC 350 technical service bulletins
121 technical service bulletins and manufacturer communications cover the 2020 Mercedes-Benz GLC 350, including one warranty extension.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the...
- Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is...
- Clanking noise from the area of the speakers in the doors
- Mercedes-Benz USA is currently experiencing limited availability of transmission fluid specification ATF...
- • Always use the latest XENTRY Diagnosis software release with all available add-ons
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper...
- 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...
- Check engine light on with the following fault is current in the VGS Control Unit: P084300 Oil pressure...
- Activating Navigation Please Wait" message seen on central display
- Only vehicles with a variable transfer case are affected
- Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious
- The shift from 1st to 2nd gear may be uncomfortable under light load
- Possible complaints about shift quality, issues with learning the park lock, and slipping/rinse entries in...
- MBUX head unit display with red text box "System Inoperative". ONLY for vehicles with SA code (549+21U) or...
- The following most common complaints may be observed: • Brief connectivity interruptions when using Apple...
- In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the...
- Load compartment cover generates a creaking noise during driving when pulled out to covering position
- 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
- Headlamps leaking or fogged
- Instrument cluster message for rear turn signal lamp despite functioning rear lamp
- Rear cross traffic activation without obvious
- Complaint
- The luggage compartment lighting switches off and back on erratically if the tailgate is opened with the...
- Electrical system
- During a phone call, the called party has difficulty understanding/cannot understand the driver, or...
- MBUX headunit display with red text box "System Inoperative". ONLY for vehicles with SA code (549+21U) or...
- Paint damage on door paneling in area of door handle (see picture 1).
- Fuel door may require several attempts to open
- Sliding sunroof panel of panoramic sliding sunroof reverses (temporarily, once, multiple times) during...
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Customer states CEL is on. Cause Quick test shows FC P0A7F00 The state of health limit of the...
- Washer fluid system leaks
- Check engine light on. One of the below fault codes is current in the engine control module (N3/10)
- Headlamp or front fog lamp leaky or fogged
- Rear lamps fogged up/not leaktight
- Noticeable vibrations at the steering wheel: • At speeds between 40mph and 75mph • On straight stretches...
- The driver's seat memory settings do not synchronize with the driver's user profile as described in the...
- Tailgate opens unintentionally
- Always use the latest XENTRY Diagnosis software release with all available add-ons
- Electrical system: software
- 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
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the...
- Electrical system
- Electrical system
- Crease formation on genuine leather seat covers in vehicles with low mileage ⢠Objects left on the seats...
- Electrical system
- Wheezing noises from the front shock absorbers when passing over surface undulations and rough road
- The "SOS nonfunctional" message appears sporadically in the instrument cluster of the vehicle
- Sliding sunroof panel of panoramic sliding sunroof reversed (temporarily, once, multiple times) during...
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the...
- Electrical system
- The Mercedes me connect services cannot be activated
- Visibility
- In the MBUX weather app, the temperature is displayed in the wrong unit (Fahrenheit instead of °C, or vice...
- Complaint
- Tailgate opens unintentionally
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- Staining on door trim strips and top and bottom trim elements on rear side windows
- 1. Vibrations noticeable at steering wheel when front axle is excited when driving at a speed between 65...
- Staining on door trim strips and top and bottom trim elements on rear side windows
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- Malfunction of the electric steering column adjustment
- Customer states after a bus sleep the SiriusXM category changes from "My Favorites" to "All...
- In an initial quick test, DTC B238A00 "Fan 2 of the control unit has malfunctioned" may be active...
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- Thumping noise on rear axle shock absorber on rough road
- Electrical system
- 1. Vibrations noticeable in steering wheel when front axle is excited while driving at a speed above 40...
- Fault message (yellow) in instrument cluster and TPM warning lamp
- The result from the XENTRY battery test does not match the current state of the battery
- The following complaints may be noted by the customer: • Upon selecting navigation, the central display...
- The garage door hand transmitter cannot be initialized with the integrated garage door opener in the...
- The range of the integrated garage door opener (GTO) is too short
- MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 – Boost Pressure is Too High"" "
- MBUX multimedia system: Map data does not match with your system/the navigation system cannot be activated
- Upon selecting navigation, the central display may show the following message: "Map data does not match...
- The mobile phone address book may not be transferred completely to the multimedia system COMAND, Audio 20,...
- On vehicles with code 077 HERMES dummy module the following functions are restricted, unavailable.
- Fuel filler flap opens slowly/switch flashes/tank is bleeding instrument cluster warning
- The customer may note that the Dashcam feature is inoperable with one of the following complaints.
- The customer may note that the Dashcam feature is inoperable with one of the following complaints
- Launch EW NCU
- Coolant warning in instrument cluster
- Free browsing, Internet access via Wi-Fi hotspot and Internet radio nonfunctional"
- Vehicle does not start after charging process
- Remote start causing CEL and U012600.
- For plug in hybrid and electric variants: Complaints about the electric range
- With engine M17x the ME Control Unit: "The Coolant Temperature is Below the Specified Temperature"
- Message (yellow) in IC "Active Brake Assist currently restricted, see operator's manual, Remedy:...
- Engine switches off again when re-attempting Remote Start via Mercedes me App. This only occurs if the...
- Steering wheel heater and/or Distronic cannot be activated
- After ignition ON, the following message is shown on the instrument cluster
- Fault in 12 V interlock circuit
- In XENTRY diagnosis, the message "MBUX multimedia system control unit is defective (hard drive, internal...
- If the exhaust flap is operated or the drive program is changed within 10 seconds of the engine being...
- The customer complains that when the ignition is switched on, pulsating buzzing noises which fluctuate in...
- The following complaints may be noted by the customer
- Navigation system permanently displays "Activating".
- Reset the customer-specific data and perform a software update of the AUDIO20 control unit.
- Traffic information service and posibly the voice control, nonfunctional after navigation software update.
- Cd/dvd
- High voltage battery warning message in instrument cluster.
- Gasket may settle causing a slight oil leak.
- Operation complaints for LED headlamps.
- Noises when opening and closing automatic liftgate.
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