2024 Mercedes-Benz E350 Technical Service Bulletins

163 technical service bulletins (TSBs) are on record for the 2024 Mercedes-Benz E350. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11038188Sep 26, 2026Steering. Complaint Slight creaking noises when steering. Cause Noises may come from one or more sleeves of the horn contact plate. Remedy Remove the horn contact plate and check the sleeves for noise; see attached video. If necessary, apply lubricant to the sleeves.
• 11038186Sep 22, 2026Brakes. Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. Cause Although the cause of the vibration is most likely due to excessive lateral runout on the rotor or hub/wheel bearing, the system as a whole needs to…
• 11038217Sep 14, 2026Body and structure. Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary, create a TIPS case with an informative video as an attachment.
• 11037834Sep 14, 2026Transmission and drivetrain. Complaint Whining / humming noises (described as foghorn‑like) from the drivetrain in the rear axle area during cornering. (figure 1) On the above‑mentioned vehicles with a mileage up to 15,000 km (about 9,300 mi), noises can occur from the rear axle differential. Cause Drivetrain resonance caused by the gear mesh of the ring and pinion in the rear axle differential in combination with installed damper elements on…
• 11037228Aug 28, 2026Steering. Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time. OR Rattling, humming, dry sliding/gravel noise from the electric steering system when steering (see attachment). Complaint does not impact the ability to safely steer or control the vehicle. Cause Ball screw drive (KGT) of electric steering damaged by: 1. External force due to: ‑ Hitting the…
• 11036511Aug 24, 2026Electrical system, Body and structure. Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EXAMPLE: when stored in trouser pocket, handbag etc. Remedy As of the 6th generation, the vehicle key can be recoded so that the tailgate no longer opens as a result of a long press on the button, but by double‑clicking on the button instead. This reduces the likelihood of the…
• 11036999Aug 15, 2026Fuel system. Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA is extending the warranty coverage for the Diagnostic Module for Tank Leakage Detection ("DMTL") on your vehicle from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 15 years/150,000 miles (whichever occurs first)…
• 11036142Aug 12, 2026Electrical system. Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics. Cause Various root causes Remedy See attached diagnostic guide.
• 11036101Aug 6, 2026Body and structure. Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary, create a TIPS case with an informative video as an attachment.
• 11035780Aug 4, 2026Other or unknown, Transmission and drivetrain. Complaint Mercedes-Benz USA is currently experiencing limited availability of transmission fluid specification ATF 236.17 due to a global supply constraint. 236.17 ATF 1L and 5L (PNs: A002989060312 and A002989060313) bottles are out of stock or in limited supply at Zep. This LI has been created with the following intention: - Provide dealers with additional workshop-focused guidance regarding the current ATF 236.17…
• 11035298Jul 27, 2026Fuel system. Complaint Audible "slurping" operating noise from the fuel tank Cause Conditions: • The fuel tank is around half full • The secondary chamber is almost empty. The suction jet pump suctions up small quantities of fuel and air. This results in vibrations and turbulence, which make noises. These noises may sound like slurping. The fuel pump and the drained secondary chamber amplify certain noises which can be loud or…
• 11035005Jul 14, 2026Transmission and drivetrain. Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to cracking of the microweld between the wheel bearing inner race and the joint…
• 11035016Jul 9, 2026Electrical system. Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a speed limit ("- -"). • Flashing when current vehicle speed is under speed limit. • Flashing between US speed limit symbol and European speed limit symbol. NOTE: • Verify that the concern falls under one of the attachment videos. If not…
• 11034983Jul 3, 2026Electrical system, Body and structure, Brakes. Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, July 23rd, 2026. After July 23rd, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return…
• 11035237Jul 2, 2026Electrical system. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, there is a new software update for the MBUX Infotainment System. An OTA update will further enhance functionality and stability of the MBUX Infotainment System. This OTA update will include New DIGITAL LIGHT projections for opening/closing the vehicle doors, Apple iPhone notifications synchronization, and…
• 11033935Jun 12, 2026Electrical system. Complaint The remaining time shown on the instrument cluster in the workshop menu (days to next due service) is implausible (>365 days) for the following conditions: • for the date of the vehicle handover • or the last conducted and confirmed Service A/B Cause Case 1: Observe the following on vehicles with a disconnected on-board electrical system battery (12V/48V): • The period in which the on-board electrical…
• 11033852Jun 12, 2026Electrical system. Complaint 1. "Perform vehicle handover" in the workshop menu to start the maintenance computer for service A/B cannot be carried out. 2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. 3. The service display in the instrument cluster permanently displays 365 days (remaining time) and does not change.
• 11033168Jun 1, 2026Steering. Complaint Rattling/knocking noise from the rear axle steering is audible when driving on rough terrain or cobblestones. Large play in the rear axle steering. Cause Diverse functional play in the rear axle steering. Remedy 1. Detach underfloor paneling under rear axle steering. 2. Unscrew both holders of the rear muffler on the exhaust system and lower the rear muffler 3. Remove heat shield. 4. Remove large clamps…
• 11033109May 30, 2026Brakes, Body and structure, Suspension. Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, June 18, 2026. After June 18th, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return…
• 11033164May 29, 2026Electrical system. Complaint 1. "Perform vehicle handover" in the workshop menu to start the maintenance computer for service A/B cannot be carried out. 2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. 3. The service display in the instrument cluster permanently displays 365 days (remaining time) and does not change.
• 11032890May 20, 2026Electrical system. Complaint 48V battery (A66) part numbers A 000 982 78 24, A 000 982 57 30, A 000 982 88 31, A 000 982 50 32, A 000 982 87 32) may trigger a fault message ("48 V Service Required" with fault codes P0ADA91, P0ADE91, P0AA100, P0ADD00 or P0AA000) in the instrument cluster. This fault message may prevent the 48 V battery contactors from opening automatically if the 12 V power supply is interrupted. In this case, the 48…
• 11032878May 19, 2026Seats. Complaint Play/noise at height adjuster or in seat guide rail on front seats Cause Tolerances and variations in the manufacturing process Remedy 1. Inspect Seat Height Adjuster Barcode Label (See Pic.1) • Locate the barcode label on the cross tube of the seat height adjuster. • In isolated cases, the barcode label may be located on the front side of the cross tube. If not visible, remove the seat cushion to access…
• 11032875May 19, 2026Visibility (wipers, defrost, mirrors). Complaint There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper blades squeaking, chattering, shuddering B: The windshield is not wiped completely (streaking) C: During the downward movement water is pulled back onto the windshield from the A-pillar (Figure 1) D: After windshield cleaning, water keeps spraying onto the windshield for several wipe cycles (Figure 2)…
• 11032704May 15, 2026Seats. Complaint One or more seat functions are restricted or inoperative. This may include: • Seat memory • Automatic seat adjustment • Easy Entry/Exit • Head restraint presetting • Collision avoidance with bench seat at rear • Actuation by other vehicle systems Seat normalization is missing, and fault code B228678 – “The control unit calibration has been lost or was not performed. Adaptation or adjustment is not…
• 11032599May 12, 2026Suspension. Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements and/or Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/ maneuvering. Sound file attached for comparison. MUST match noise for proper diagnosis. NOTE: Steering functionality is not affected. Cause Contact area between wheel bearing and steering knuckle.
• 11031556Apr 24, 2026Body and structure. Complaint Clattering sound in B-pillar trim Cause Play between substructure and B-pillar trim Remedy Installing a 70x15x3 mm felt strip next to the air duct under the substructure. The felt is supplied by the meter and must be cut to the specified dimension. Procedure: 1) Lift the substructure (black). 2) Install the felt lengthwise below the substructure on the B-pillar trim. Note: The felt must be installed as…
• 11031580Apr 16, 2026Exterior lighting. Complaint Headlamp, front fog lamp leaky or fogged. Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps: 1.
• 11030301Mar 25, 2026Other or unknown. Complaint The intent of this document is to provide workshops with helpful technical reference language. • Commonly used acronyms in LI's and TIPS cases. • Control unit names, numbers, and how to identify. • Network/wiring architecture groups to baumuster quick reference. • Platform to baumuster quick reference.
• 11029961Mar 9, 2026Electrical system, Seats. Complaint The seat may no longer be adjustable using the electric seat adjustment switch on the door module. No related error is stored in the quick test. Cause Under certain conditions, the electric seat adjustment switch may remain in sleep mode. It is then not possible to adjust the seat using this switch. This is a software error. Remedy To restore functionality, perform the following steps: 1. Remove the door…
• 11029927Mar 4, 2026Electrical system. Complaint Yellow information message in driver display (instrument cluster): "Switch on motor to charge the 12V battery" Cause The state of charge (SOC) of the 12V battery has dropped to 45% or less. Remedy This warning message appears as soon as the state of charge (SOC) of the 12V primary battery drops below 45%. This message is displayed to safeguard the vehicle's starting ability.
• 11029919Mar 2, 2026Steering. Complaint Noises from the area of the steering column. - Creaking - Squeaking - Chattering - Humming - Grinding Cause At present, there are no known noise problems with the steering column. Remedy Check surrounding area of the steering column for possible noises. • Instrument panel support • Steering column switch module If noise only occurs when adjusting the steering column via electric actuation please perform…
• 11029091Feb 28, 2026Steering. Complaint Stored DTC C220564 - "There is an internal fault in the steering angle sensor. There is an implausible signal." In the quick test, there are also no other DTC's in other control units that point to or reference N80 Steering Column Control Module ("SCCM"). There is no effect on any other components or vehicle functions and it does not cause an instrument cluster light. Cause The DTC only ever occurs during…
• 11029090Feb 27, 2026Body and structure. Complaint Please perform the corresponding remedy measures (points 1-4) depending on the determined problem (points 1-4): 1. KeylessGo sensor surfaces do not respond. Door handles can extend/retract if unlocked/locked using the key. No particular fault code. 2. Flush-fitting door handle does not extend and/or retract.
• 11029083Feb 25, 2026Body and structure, Electrical system. Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket, handbag etc. Remedy As of the 6th generation, the vehicle key can be recoded so that the tailgate no longer opens as a result of a long press on the button, but by double-clicking on the button instead. This reduces the likelihood of the button…
• 11028816Feb 13, 2026Electrical system. Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.
• 11028809Feb 13, 2026Other or unknown. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the TIREFIT sealant bottle may not meet specifications. The possibility exists that the sealant bottle may leak or may have otherwise been removed from the vehicle. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will replace the TIREFIT bottle in the trunk.
• 11028532Feb 3, 2026Electrical system. Complaint Red ring displayed around vehicle when front or rear camera door actuates. Please also see LI54.65-P-080132 for additional listed red ring causes. Cause EMF interference. Remedy Camera functionality is not affected. Cameras and displays operate normally. For vehicles with a front facing actuating camera and flap (223 and 297): • 223, 297 > Install clip on ferrite magnet on M35/1, pin 3.
• 11028531Feb 3, 2026Engine. Complaint Check engine light illuminate, or previously on One of the below Exhaust Flap fault codes stored in PTCU N127: P13C273 P13C278 P140473 Cause Various Remedy Model year 2024 254 and 167 with engine M254 -Update software of N127 PTCU. New software: 254- A2549022611 167- A2549022811 -Clear fault codes and check operation of the exhaust flap. Models with M256, or models with M254 after SW update -Check exhaust…
• 11027902Jan 31, 2026Exterior lighting, Electrical system. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the software for the Headlamp Range (HLI) control unit does not correspond to the latest series production configuration. As a result, adaptive lighting functions may not be available. Additionally, the following instrument cluster message may appear: "Adaptive High Beam Assist is not available" or…
• 11027905Jan 30, 2026Suspension. Complaint: Clattering noise from area of hood with steel suspension. Cause: Missing helical spring shim (blue part as shown in attached picture "Helical Spring Shim"). Remedy: Check whether the blue helical spring shim is installed. If NOT present: Install the spring shim. Replacement part is black. If present: Replace the blue shim with the aftersales part black shim. If noise is still not remedied after replacing…
• 11027904Jan 30, 2026Electrical system, Back-over prevention (rear camera). Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.
• 11027796Jan 23, 2026Steering. Complaint Noises from the area of the steering column. - Creaking - Squeaking - Chattering - Humming - Grinding Cause At present, there are no known noise problems with the steering column. Remedy Check surrounding area of the steering column for possible noises. • Instrument panel support • Steering column switch module If noise only occurs when adjusting the steering column via electric actuation please perform…
• 11027751Jan 16, 2026Visibility (wipers, defrost, mirrors). Complaint Customer states the AC either does not cool/has poor performance or heat is insufficient. Cause Many possible root causes Remedy *Note - This Li does not apply if there are other Li's that apply to your concern OR you have a fault and/or guided test that leads to a root cause. AC Diagnosis (General) Initial Steps Verify Customer Concern • Confirm the issue reported by the customer. Compare to Like Vehicle…
• 11026978Jan 5, 2026Electrical system. Complaint After updating the CIVIC206 control unit (A26/17), the front Parktronic beep is now only faintly audible and noticeably quieter than the rear beep when reversing. Cause SCN coding in CIVIC206 control unit A26/17 Remedy SCN code control unit A26/17 head unit.
• 11026833Dec 20, 2025Transmission and drivetrain. Complaint (Original LI document #: LI27.35-P-079039) Clicking noises from the electro-hydraulic control unit (EHS) when the vehicle is stationary and ECO Start/Stop is active (combustion engine is off). The noise is more noticeable outside the vehicle and in acoustically shielded areas such as closed rooms or garages. Cause The noise in the valve body (EHS) is caused by superimposed pressure peaks acting on the…
• 11026834Dec 18, 2025Electrical system. Complaint After the charging process is complete, an instrument cluster message with a charging error appears and FC P0CFE00 is stored in control unit "N83 - AC charger for high-voltage battery (SG-LG)". The fault message and the fault memory entry can also appear at the beginning of the charging pause during delayed charging. Both only occur in combination with active pre-entry climate control. Cause Software in…
• 11026607Dec 12, 2025Electrical system. Complaint The following most common complaints may be observed: • Brief connectivity interruptions when using Apple CarPlay over Wi-Fi • Audio cuts out • Device not recognized • No operation possible Cause There are multiple possible causes for an iPhone disconnecting from a vehicle’s head unit while using Apple CarPlay.
• 11026611Dec 11, 2025Electrical system. Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.
• 11026608Dec 11, 2025Electrical system. Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a speed limit ("- -"). • Flashing when current vehicle speed is under speed limit. • Flashing between US speed limit symbol and European speed limit symbol. Cause There are two identified reasons for this concern: 1. Country code information…
• 11026595Dec 6, 2025Suspension. Complaint An instrument cluster message "Rear axle steering fault, stop immediately" is very briefly illuminated in the instrument cluster upon vehicle start-up, prior to driving. No fault codes stored in the rear axle steering control unit N68/4. Cause Asynchronous start-up of control units in the vehicle. Remedy The message clears once the head unit receives the rear axle steering signal.

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