2020 Mercedes-Benz E 450 technical service bulletins
240 technical service bulletins and manufacturer communications cover the 2020 Mercedes-Benz E 450, 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...
- Fuel/propulsion system
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9G‑TRONIC automatic...
- Slight creaking noises when steering
- Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is...
- Red coolant warning in instrument cluster
- 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
- Tailgate opens unintentionally
- 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...
- 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)
- Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements...
- Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed,...
- Service code B1 displayed in the customer menu does not match the workshop code displayed in the workshop...
- 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,...
- There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper...
- The part numbers listed in the chart below should no longer be installed, and any existing stock must be...
- Damaged cords/tensioning cables at the soft top interior trim with the following characteristics
- The intent of
- Headlamp, front fog lamp leaky or fogged
- Headlamp, front fog lamp leaky or fogged
- Yellow information message in driver display (instrument cluster): "Switch on motor to charge the 12V battery"
- This LI does Not apply to 223 or 206 which use a different generation of 48V systems
- Headlamps leaking or fogged
- Tailgate opens unintentionally
- Engine
- Unknown or other
- Check engine light on with the following fault is current in the VGS Control Unit: P084300 Oil pressure...
- Only vehicles with a variable transfer case are affected
- Red ring displayed around vehicle when front or rear camera door actuates
- 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
- (Original LI document #: LI27.35-P-079039) Clicking noises from the electro-hydraulic control unit (EHS)...
- ESP®, BAS, PRE-SAFE®, HOLD function, Hill-Start Assist, ESP® trailer stabilization, Adaptive Brake Lights,...
- The shift from 1st to 2nd gear may be uncomfortable under light load
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Possible complaints about shift quality, issues with learning the park lock, and slipping/rinse entries in...
- Electrical system
- At low speeds and light brake pressure, brakes will make a groaning or honking noise
- The result from the XENTRY battery test does not match the current state of the battery
- See Attachment
- Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick...
- After a software update from campaign 2025050001 of component LIB48_222
- After a software update of component LIB48_222
- Users report that the browser no longer supports search queries entered directly into the address bar
- No cooling output, compressor inoperative
- Electrical system
- Electrical system
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- 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...
- After a software update of HERMES communication module N112/9 has been performed on a gray import vehicle,...
- Electrical system
- Please note that the exact quick test conditions must be met as seen below
- Headlamp, front fog lamp leaky or fogged
- A popup is seen on the HU with the message "data connection temporarily not available". Potentially...
- Instrument cluster message for rear turn signal lamp despite functioning rear lamp
- Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument...
- A clicking/ticking/taping noise from underneath the vehicle with engine off during ECO stop event or after...
- MBUX headunit display with red text box "System Inoperative". ONLY for vehicles with SA code (549+21U) or...
- Rear side window reversed when opening/closing soft top
- The message "Device detected at diagnostics connection See Owner’s Manual" appears sporadically in the...
- Electrical system
- During a phone call, the called party has difficulty understanding/cannot understand the driver, or...
- Customer-perceived problem: • Fuel gauge reading implausible • MIL ON (market-dependent) N118/3 Fault...
- Electrical system
- Electrical system
- Electrical system
- Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements
- Noise from area of instrument panel Noise might occur in the following conditions
- Paint damage on door paneling in area of door handle (see picture 1).
- 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)
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Electrical system
- 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
- Only vehicles with a variable transfer case are affected
- Washer fluid system leaks
- Fuel/propulsion system
- Tension-releasing impact of the propeller shaft with the force-free in D "KID" function, after vehicle has...
- White plastic insert present on microphone assembly
- Headlamp or front fog lamp leaky or fogged
- Headlamps fogged or droplets forming
- To insure vehicle down time is kept at a minimum and all required information is available when case is...
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G-TRONIC automatic...
- 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...
- This is to notify you of the Service Campaign OTA update for the MBUX system software in 750,313 Model...
- Tailgate opens unintentionally
- The radio station favorites list is no longer present after bus idle Saving process during download...
- 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
- Electrical system
- 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
- Rear side window reversed when opening/closing soft top
- 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...
- Engine and engine cooling
- Loads induced at the steering wheel through pushing and pulling actions may
- Complaint
- This LI does Not apply to 223 or 206 which use a different generation of 48V systems
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- The trunk lid is not latching into the closed position with the help of the trunk lid power closing...
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- Customer states after a bus sleep the SiriusXM category changes from "My Favorites" to "All...
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- Thumping noise on rear axle shock absorber on rough road
- The Apple Carplay interface cannot be controlled via the center console touchpad or the right-hand...
- ESP®, BAS, PRE-SAFE®, HOLD function, Hill-Start Assist and ESP® trailer stabilization are unavailable
- Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has produced certain MY 2021-2022 A-Class,...
- 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
- Sporadic warning message in instrument cluster "Engine oil pressure stop switch off vehicle" (or similar)...
- The exhaust gas cleaning information label does not correspond to currently valid specifications
- 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
- Functional impairment of 48 V on-board electrical system "
- New service campaign launch information.
- 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,...
- The customer may note that the Dashcam feature is inoperable with one of the following complaints.
- If TRANSMISSION 725.1 9G TRONIC FACELIFT exhibits any "shift quality" concerns, vared diagnosis procedures...
- 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
- Intermittently after bus sleep the lower control panel LCP and upper control panel UCP may be panel UCP...
- Insufficient charging or no wireless charging with iPhone 12.
- The customer may note that the Dashcam feature is inoperable with one of the following complaints
- 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"
- 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
- Park Assist warnings (e.g. acoustic/visual warnings from parking sensors) without obvious
- Fault in 12 V interlock circuit
- When ordering the electrohydraulic controller unit (EHS) using the part number stated on the EHS, the...
- Fault message in instrument cluster to drive at max
- V5 SuperSport Steering Wheel
- 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...
- Complaint: Various causes are possible
- Air Conditioning Intermittently Does Not Cool
- Functional impairment of 48 V on-board electrical system
- Electrical system
- NTG5.5
- If the customer brakes sharply from a speed of > 30mph, without ABS intervention, there is a single...
- Unmotivated Reaction from Park Assist
- Fault Code U045A00 "Implausible Data Were Received From Control Unit 'Parking System'." Stored In Electric...
- Cracking/Creaking Noises Coming From The Area Of The Mechanical Steering Column
- Shifting complaints and transmission fault codes in vehicles with transmission 725.0
- Xentry Battery Tester results disagree with workshop assessment
- The front right inner door panel does not correspond with our specifications in the vehicles of the...
- Engine diagnosis warning lamp activated
- Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect...
- Hold detent for front door hinges
- Airmatic
- The mobile phone address book is not transferred completely to the multimedia system (COMAND or MBUX). In...
- The check engine indicator light in the instrument cluster may be illuminated with one of the following...
- When the dynamic seat is activated, the tensioning straps on the seat backrest frame may creak
- 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
- Window lifter reverses direction on reaching upper end position.
- Vehicle positioning inaccurate/implausible.
- Intial startup not possible after replacement of transmisson 725.0 or of electrohydraulic controller unit.
- Traffic information service and posibly the voice control, nonfunctional after navigation software update.
- Trunk lid difficult to close.
- Cellular telephone; Voice control system.
- Firewall grommet on assembly partition wall leaky.
- Fault message in instrument cluster(B178392).
- Wiper blades make noises.
- Gasket may settle causing a slight oil leak.
- Central display: Malfunctions temporarily.
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