2020 Mercedes-Benz GLA 250 technical service bulletins
142 technical service bulletins and manufacturer communications cover the 2020 Mercedes-Benz GLA 250, including 2 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...
- 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
- Intermittent shift feel or thud/clunk noise perceived, such as a brief jerk or transmission reaction...
- A popup is seen on the HU with the message "data connection temporarily not available". Potentially...
- Hand detection system – malfunction / vehicles with code 266 Fault message in instrument cluster: "Active...
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed,...
- 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...
- Wind noises in area along the top of windshield at speeds above 60mph
- The intent of
- Headlamp, front fog lamp leaky or fogged
- Radio station cover art does not refresh when switching stations
- -Check engine light illuminated
- Headlamp, front fog lamp leaky or fogged
- Yellow information message in driver display (instrument cluster): "Switch on motor to charge the 12V battery"
- Engine
- Headlamps leaking or fogged
- Tailgate opens unintentionally
- Unknown or other
- 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active...
- Customer states the AC either does not cool/has poor performance or heat is insufficient
- Customer states the AC either does not cool/has poor performance or heat is insufficient
- Oil residue in connector of transmission control unit in dual-clutch transmission models 724.0 and 724.1.
- 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)
- USB port not functioning properly
- At low speeds and light brake pressure, brakes will make a groaning or honking noise
- To prevent the wiper motor from overheating, the wipe frequency is reduced automatically when a dry...
- Customer complaints regarding automatic transmission 724.1 (8FDCT & 8FDCT hybrid) For faster, more...
- Electrical system
- MBUX head unit display with red text box "System Inoperative". ONLY for vehicles with SA code (549+21U) or...
- In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the...
- The check engine light illuminates or the 48 V message is displayed in the instrument cluster
- After a software update of HERMES communication module N112/9 has been performed on a gray import vehicle,...
- Headlamp, front fog lamp leaky or fogged
- A popup is seen on the HU with the message "data connection temporarily not available". Potentially...
- The message "Device detected at diagnostics connection See Owner’s Manual" appears sporadically in the...
- Check engine light comes on when driving/starting the vehicle
- MBUX headunit display with red text box "System Inoperative". ONLY for vehicles with SA code (549+21U) or...
- Electrical system
- During a phone call, the called party has difficulty understanding/cannot understand the driver, or...
- Please note that the exact quick test conditions must be met as seen below
- The flap of the reversing camera opens and closes by itself during forward travel several times during the...
- Electrical system
- 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)
- Power train
- Service Campaign 2024110007: Please visit an authorized Mercedes-Benz dealer where they will replace the...
- Please visit an authorized Mercedes-Benz dealer where they will replace the rear axle flex disk, free of...
- 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...
- Rear lamps fogged up/not leaktight
- 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
- Headlamps fogged or droplets forming
- Noise can be heard coming from the air conditioning system at higher blower motor speeds
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the...
- This is to notify you of the Service Campaign OTA update for the MBUX system software in 750,313 Model...
- 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
- Structure
- Customer complains about anti-theft alarm system triggering without obvious cause when the vehicle is...
- Electrical system
- Electrical system
- Crease formation on genuine leather seat covers in vehicles with low mileage ⢠Objects left on the seats...
- Electrical system
- The "SOS nonfunctional" message appears sporadically in the instrument cluster of the vehicle
- Electrical system
- The Mercedes me connect services cannot be activated
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the...
- In the MBUX weather app, the temperature is displayed in the wrong unit (Fahrenheit instead of °C, or vice...
- Ambient lighting malfunctions sporadically, mainly in the Ocean Blue color value and with animation "ON"....
- Excessive resistance of door side windows when being raised/lowered, cracking and squeaking noises
- Squeaking noises from the front axle brakes when operating the brakes
- Power train
- 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
- Squeaking noise from area of input shaft of electric steering
- Chirping or tapping noise originating in area of front crankshaft pulley when engine cold
- Customer states after a bus sleep the SiriusXM category changes from "My Favorites" to "All...
- Vibrations in steering at speeds lower than 30 mph
- Complaint
- Noises from the area of the steering column
- The Apple Carplay interface cannot be controlled via the center console touchpad or the right-hand...
- Squeaking noise from area of input shaft of electric steering
- Volume and bass level too low
- Fault message (yellow) in instrument cluster and TPM warning lamp
- Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has produced certain MY 2021-2022 A-Class,...
- MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 – Boost Pressure is Too High"" "
- Coolant warning in instrument cluster
- Free browsing, Internet access via Wi-Fi hotspot and Internet radio nonfunctional"
- Launch NCU
- With engine M17x the ME Control Unit: "The Coolant Temperature is Below the Specified Temperature"
- New map data cannot be downloaded by the customer from the Mercedes me PortalNew map data cannot be...
- X247 code 233
- 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
- Humming noises or vibrations from the area of the rear axle when maneuvering or moving off at traffic...
- Noise from the front axle when steering while stationary or when steering at low speeds
- Slight grinding noise when steering is turned to full lock
- In XENTRY diagnosis, the message "MBUX multimedia system control unit is defective (hard drive, internal...
- The following complaints may be noted by the customer
- Air Conditioning System Occasionally Does Not Cool Correctly At Outside Temperatures Above 40°C
- Fault code for short circuit to ground stored in AW- D_MFA2
- Communication errors with control unit AWD_M- FA2
- Replace automatic transmission
- Humming/ vibrations/ noises from the area of the rear axle while maneuvering or when moving off
- BR167 / MFA2
- Service brakes, hydraulic: foundation components: disc: pads
- Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect...
- The mobile phone address book is not transferred completely to the multimedia system (COMAND or MBUX). In...
- Check engine indicator light active and fault code P261029/P02FF85/P02FF02 stored in engine control unit
- Information Label on Tire Sealant
- EASY-Pack liftgate does not fully open
- Traffic information service and posibly the voice control, nonfunctional after navigation software update.
- Clacking noises from the front axle area.
- Gasket may settle causing a slight oil leak.
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