# Service bulletin LI54.30\-P\-080649 A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned. - Type: Service bulletin - NHTSA id: 11034536 - Published by NHTSA: 2026\-07\-06 - Manufacturer's number: LI54.30\-P\-080649 - Manufacturer's date: 2026\-07\-01 - NHTSA component: ELECTRICAL SYSTEM; STRUCTURE:BODY ## NHTSA's summary Complaint General information on the operation of the PRE\-SAFE® Impulse system: The PRE\-SAFE® Side Impulse system is a preventive, i.e. pre\-collision occupant protection system. The task of the system is to provide additional protection to vehicle occupants when there is a risk of a side impact. It is not a restraint system component in the conventional sense and does not contain an detonator. A potential side\-impact situation is detected by radar sensors. If the system detects an existing likelihood of a side impact, a reversible air cushion in the outer seat side bolster is briefly inflated by opening a valve. The resulting pulse preemptively increases the distance between the door and the occupant in order to move the occupant out of the danger zone. If the system has been activated, the following message appears on the instrument cluster: PRE\-SAFE® Side Impulse inoperative. See Operator's Manual. Note: After system activation, diagnostic entry B1B3713 or B1B3813 is marked as active and stored in the ORC223 \(N2/5\) control unit. Cause After activation of the “PRE\-SAFE® Side Impulse” system, the function is no longer available. Remedy Please check the tight seating and possible damage of the radar sensors B29/11 or B29/12. Then replace the gas generator on the affected side \(R12/65 or R12/66\). After replacing the gas generator \(R12/65 or R12/66\), please perform commissioning and SCN coding of the radar sensors B29/11 or B29/12 to ensure they are up to date. Note: In principle, it is not necessary to replace the air cushion in the "PRE\-SAFE® Side Impulse" system, as it is designed for multiple activations \(up to 10\). Exception: After deployment of the sidebag \(e.g., following a crash\), exchange \(air cushion with gas generator\) of the "PRE\-SAFE ® Impulse Side" is required in all cases. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11034536-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11034536-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Body and frame, Electrical system ## Vehicles listed - 2023 to 2024 MERCEDES\-BENZ AMG C43 - 2023 to 2026 MERCEDES\-BENZ AMG C43 4MATIC - 2024 MERCEDES\-BENZ AMG C63 S E - 2024 to 2025 MERCEDES\-BENZ AMG C63 S E 4MATIC\+ - 2026 MERCEDES\-BENZ AMG C63 S E PERFORMANCE 4MATIC\+ - 2024 MERCEDES\-BENZ AMG CLE53 - 2026 MERCEDES\-BENZ AMG CLE53 4MATIC CABRIOLET - 2026 MERCEDES\-BENZ AMG CLE53 4MATIC COUPE - 2024 to 2025 MERCEDES\-BENZ AMG CLE53 4MATIC\+ - 2025 MERCEDES\-BENZ AMG CLE53 4MATIC\+ CABRIOLET - 2023 to 2025 MERCEDES\-BENZ AMG EQE - 2023 to 2026 MERCEDES\-BENZ AMG EQE 4MATIC\+ - 2024 to 2025 MERCEDES\-BENZ AMG EQE SUV 4MATIC - 2026 MERCEDES\-BENZ AMG EQE SUV 4MATIC\+ - 2022 to 2024 MERCEDES\-BENZ AMG EQS - 2023 to 2025 MERCEDES\-BENZ AMG EQS 4MATIC\+ - 2024 to 2026 MERCEDES\-BENZ AMG GLC43 - 2024 to 2026 MERCEDES\-BENZ AMG GLC43 4MATIC - 2024 to 2025 MERCEDES\-BENZ AMG GLC43 4MATIC COUPE - 2026 MERCEDES\-BENZ AMG GLC43 COUPE - 2025 to 2026 MERCEDES\-BENZ AMG GLC63 S E 4MATIC\+ - 2025 to 2026 MERCEDES\-BENZ AMG GLC63 S E 4MATIC\+ COUPE - 2024 to 2026 MERCEDES\-BENZ AMG S 63 E 4MATIC\+ - 2022 to 2026 MERCEDES\-BENZ C 300 - 2022 to 2026 MERCEDES\-BENZ C 300 4MATIC - 2024 MERCEDES\-BENZ CLE 300 - 2024 to 2025 MERCEDES\-BENZ CLE 300 4MATIC - 2024 to 2026 MERCEDES\-BENZ CLE 300 4MATIC CABRIOLET - 2026 MERCEDES\-BENZ CLE 300 4MATIC COUPE - 2024 MERCEDES\-BENZ CLE 450 - 2024 to 2025 MERCEDES\-BENZ CLE 450 4MATIC - 2024 to 2026 MERCEDES\-BENZ CLE 450 4MATIC CABRIOLET - 2026 MERCEDES\-BENZ CLE 450 4MATIC COUPE - 2025 to 2026 MERCEDES\-BENZ E 350 - 2024 to 2026 MERCEDES\-BENZ E 350 4MATIC - 2024 to 2026 MERCEDES\-BENZ E 450 4MATIC - 2024 to 2026 MERCEDES\-BENZ E 450 4MATIC ALL\-TERRAIN - 2026 MERCEDES\-BENZ E53 E 4MATIC\+ ALL\-TERRAIN - 2026 MERCEDES\-BENZ EQE 320 4MATIC - 2026 MERCEDES\-BENZ EQE 320\+ - 2023 to 2025 MERCEDES\-BENZ EQE 350 4MATIC - 2023 to 2026 MERCEDES\-BENZ EQE 350\+ - 2023 to 2025 MERCEDES\-BENZ EQE 500 - 2023 to 2025 MERCEDES\-BENZ EQE 500 4MATIC - 2026 MERCEDES\-BENZ EQE SUV 320 4MATIC - 2026 MERCEDES\-BENZ EQE SUV 320\+ - 2023 to 2025 MERCEDES\-BENZ EQE SUV 350 4MATIC - 2023 to 2025 MERCEDES\-BENZ EQE SUV 350\+ - 2023 to 2025 MERCEDES\-BENZ EQE SUV 500 4MATIC - 2022 MERCEDES\-BENZ EQS 450 - 2023 to 2026 MERCEDES\-BENZ EQS 450 4MATIC - 2022 to 2026 MERCEDES\-BENZ EQS 450\+ - 2022 to 2024 MERCEDES\-BENZ EQS 580 - 2022 to 2026 MERCEDES\-BENZ EQS 580 4MATIC - 2026 MERCEDES\-BENZ EQS SUV 400 4MATIC - 2023 to 2025 MERCEDES\-BENZ EQS SUV 450 4MATIC - 2023 to 2025 MERCEDES\-BENZ EQS SUV 450\+ - 2026 MERCEDES\-BENZ EQS SUV 550 4MATIC - 2023 to 2025 MERCEDES\-BENZ EQS SUV 580 4MATIC - 2023 to 2026 MERCEDES\-BENZ GLC 300 - 2023 to 2026 MERCEDES\-BENZ GLC 300 4MATIC - 2024 to 2026 MERCEDES\-BENZ GLC 300 4MATIC COUPE - 2024 MERCEDES\-BENZ GLC 300 COUPE - 2025 MERCEDES\-BENZ GLC 300E - 2025 to 2026 MERCEDES\-BENZ GLC 350 E 4MATIC - 2026 MERCEDES\-BENZ GLC43 4MATIC COUPE - 2021 MERCEDES\-BENZ S 500 - 2023 MERCEDES\-BENZ S 500 - 2022 to 2026 MERCEDES\-BENZ S 500 4MATIC - 2021 MERCEDES\-BENZ S 580 - 2023 MERCEDES\-BENZ S 580 - 2022 to 2026 MERCEDES\-BENZ S 580 4MATIC - 2023 MERCEDES\-BENZ S 580 E - 2023 to 2026 MERCEDES\-BENZ S 580 E 4MATIC - 2024 to 2026 MERCEDES\-MAYBACH EQS SUV 680 4MATIC - 2021 MERCEDES\-MAYBACH S 580 - 2022 to 2026 MERCEDES\-MAYBACH S 580 4MATIC - 2023 to 2024 MERCEDES\-MAYBACH S 680 - 2022 to 2023 MERCEDES\-MAYBACH S 680 4MATIC - 2025 to 2026 MERCEDES\-MAYBACH S 680 4MATIC ## Recalls for the same vehicles and component - [2026364](/recalls/tc/2026364.md), 2026-07-24: Structure - [26V281000](/recalls/nhtsa/26V281000.md), 2026-05-01: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL - [2025213](/recalls/tc/2025213.md), 2025-04-17: Electrical - [24V115000](/recalls/nhtsa/24V115000.md), 2024-02-16: ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS ## Other bulletins for the same vehicles and component - [LI82.62\-P\-078631](/bulletins/11038217.md), 2026-10-06, Service bulletin: STRUCTURE:BODY. 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. Note: Please refer to this document in the warranty claim and, once diagnosis is completed, select the damage code depending on the component part that is causing the issue. • If the noise stops when the door trim is removed, please proceed in accordance with LI72.10‑P‑067691. Information: In this case, do not use a damage code for the speakers in the warranty claim\! - [LI54.71\-P\-079104](/bulletins/11037806.md), 2026-10-02, Service bulletin: ELECTRICAL 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, then it is outside of the scope of this LI. • This also does not cover "Traffic Sign Inoperative" messages on the instrument cluster. Cause There are two identified reasons for this concern: 1. Country code information stored incorrectly at a particular geographic latitude range. 2. Incorrect reference data when the vehicle is started and a GPS signal is not immediately available. Remedy Update head unit software to latest version and the re‑check function in the same location. NOTE: Updated head unit software for AMG's has NOT been released yet. ETA 12/2026. If vehicle is still exhibiting one of the symptoms as described exactly as in the complaint section or as shown in the video attachments, open a TIPS case to the Body/Chassis/Entertainment inbox with the following: • Video of the concern. • Exact location \(latitude and longitude is best\) - [LI72.40\-P\-080776](/bulletins/11037738.md), 2026-10-02, Service bulletin: STRUCTURE:BODY. Complaint When using the one‑touch \(automatic\) window closing function on one or both front door windows, the customer may report one of the following concerns: • The window begins closing, then reverses direction before reaching the fully closed position. • The window loses normalization and can only be closed by pulling and holding the window switch until the window reaches the fully closed position. Cause Currently under investigation. Remedy Please submit a TIPS case to the Body/Chassis/Entertainment inbox and provide the following information: • A detailed description of the client's concern • Does the window reverse \(obstruction detection\) or has it lost normalization? • Is the condition reproducible? If yes, please provide a video demonstrating the concern • Initial Quick Test • Control Unit Log of the relevant Door Control Unit • Actual Values \> Power window Development data \(Reversal, Evaluation of window raising, \& Learned values\) - [LI82.60\-P\-079747](/bulletins/11037489.md), 2026-09-26, Service bulletin: ELECTRICAL SYSTEM. Complaint The Apple Music app is no longer available in the head unit apps menu after updating the software of the \(A26/17 ‑ MBUX multimedia system \+ instrument cluster \(head unit\)\) to E333.8 / A236 904 19 00. Cause Head unit software \(CIVIC206\) Remedy NOTE: Do not replace any component parts The new Apple Music app version is now available. The app should automatically be downloaded and available. If the app is not shown available, check via the Mercedes‑Benz App Store directly in the vehicle and download the app. NOTE: Please refer to this LI in the warranty claim in the "Notes" section\! - [LI54.71\-P\-079104](/bulletins/11036608.md), 2026-09-02, Service bulletin: ELECTRICAL 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, then it is outside of the scope of this LI. • This also does not cover "Traffic Sign Inoperative" messages on the instrument cluster. Cause There are two identified reasons for this concern: 1. Country code information stored incorrectly at a particular geographic latitude range. 2. Incorrect reference data when the vehicle is started and a GPS signal is not immediately available. Remedy Update head unit software to latest version and the re‑check function in the same location. If vehicle is still exhibiting one of the symptoms as described exactly as in the complaint section or as shown in the video attachments, open a TIPS case to the Body/Chassis/Entertainment inbox with the following: • Video of the concern. • Exact location \(latitude and longitude is best\) - [LI72.20\-P\-075746](/bulletins/11036511.md), 2026-08-31, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. 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 button being activated accidentally or unintentionally. The recoding can be carried out as follows: 1. Add SA Code O19 into VeDoc \(O for Oscar, not "zero"\) • an XSS ticket may be necessary to add the SA code 2. Perform SCN coding of EIS N73 control unit 3. Deactivate the vehicle key \(a successful deactivation is indicated by the LED lighting up 2x briefly and then 1x for a long period\). 4. Place the vehicle key in the storage compartment on the key symbol and turn on the ignition. IMPORTANT: all other vehicle keys must be outside the recognition range of the vehicle when doing this\! Perform steps 3 and 4 successively for all vehicle keys. Notes: 6th, 7th and 8th generation keys can be deactivated as follows: Up to modification year 22/1 by double clicking the "Lock button" As of modification year 22/1, by press and holding the “Lock button", then double‑click the “Unlock button" at the same time. On model series 167, the storage compartment with the key symbol is located in the armrest. The SCN coding from the EZS is only transferred correctly to the vehicle key under the following conditions: Only one vehicle key is located in the vehicle, this key has been deactivated and it is positioned on the marking in the storage compartment for the data transfer. The costs for this adaptation are to be borne by the customer. For the newer BR 174, 178, 244, 248, 520, and 540, a software update must be initiated, as there is no way to perform SCN coding. - [LI54.65\-P\-080132](/bulletins/11036142.md), 2026-08-12, Service bulletin: ELECTRICAL 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. - [LI82.62\-P\-078631](/bulletins/11036101.md), 2026-08-11, Service bulletin: STRUCTURE:BODY. 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. Information: Please refer to this document in the warranty claim and, after completing diagnosis, select the damage code corresponding to the component part that caused the problem. • If the noise stops when the door trim is removed, please proceed in accordance with LI72.10\-P\-067691. Information: In this case, do not use a damage code for the speakers in the warranty claim\! - [LI82.60\-P\-080806](/bulletins/11036091.md), 2026-08-11, Service bulletin: ELECTRICAL SYSTEM. Complaint DAB, FM, or SDARS radio reception is limited, only a few stations are found. Cause The firmware installation was incomplete. Remedy In the A26/17 control unit "MBUX multimedia system" \(head unit\), use XENTRY to carry out the special process "All Modules"; this will reinstall the firmware completely. - [LI80.35\-P\-080195](/bulletins/11035487.md), 2026-08-03, Service bulletin: ELECTRICAL SYSTEM. Complaint "Key Not Detected" message appears on the IC while driving even though the key is in the car and no doors have been opened. Cause EZS SW Remedy Confirm that the message is not due to the driver's door being opened and that the door latch is reading properly. For vehicles that do not have the above issues, EZS SW is released for option code 805 ONLY. For all other vehicles, the SW is still in development. Current workaround is to ensure that the key is left on the antenna in the storage compartment. JSON: [/v1/bulletins/11034536](/v1/bulletins/11034536) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20LI54.30-P-080649&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11034536&vehicle=Service%20bulletin%20LI54.30-P-080649)