Mercedes-Benz bulletin LI54.71-P-079104
Mercedes-Benz filed this with NHTSA as a service bulletin dated Aug 22, 2026, received Apr 15, 2025, about the electrical system — 7 documents under this number. It names 91 model years (2016–2026). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationComplaint 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 Do not replace parts. Please open a TIPS case to the Body/Chassis/Entertainment inbox but read the below carefully: • The vehicle must be exhibiting the concern as shown in the attachment videos. • The vehicle DOES NOT need to be at the dealer, nor does it need to be brought into the dealership. • If the geographic location is known, it is very important that it is provided. • Provide any pictures or videos, if available. A new software for the head unit is scheduled for tentative release in Q2 2026.
Documents filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| LI54.71-P-079104 | Service bulletin | Aug 22, 2026 | 11036608 |
| LI54.71-P-079104 | Service bulletin | Jul 9, 2026 | 11035016 |
| LI54.71-P-079104 | Service bulletin | Apr 14, 2026 | 11031389 |
| LI54.71-P-079104 | Service bulletin | Apr 2, 2026 | 11031255 |
| LI54.71-P-079104 | Service bulletin | Feb 28, 2026 | 11029094 |
| LI54.71-P-079104 | Service bulletin | Dec 11, 2025 | 11026608 |
| LI54.71-P-079104 | Service bulletin | Apr 7, 2025 | 11017037 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. Quote it at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themand 24 more model years on this site.
Also filed against model years this site has no page for: 2022 Mercedes-Benz AMG C63 S; 2024 Mercedes-Benz AMG C63 S E; 2024 Mercedes-Benz AMG C63 S E 4MATIC+; 2026 Mercedes-Benz AMG C63 S E Performance 4MATIC+; 2025 Mercedes-Benz AMG E 53 4MATIC+ Wagon; 2025 Mercedes-Benz AMG E 53 E 4MATIC+; 2023 Mercedes-Benz AMG GT 63 S E Coupe; 2024 Mercedes-Benz AMG GT53E; 2022 Mercedes-Benz AMG GT63; 2024 Mercedes-Benz AMG GT63 S E; 2024 Mercedes-Benz AMG GT63 S E Performance; 2026 Mercedes-Benz AMG GT63 S E Performance 4MATIC+; 2023 Mercedes-Benz AMG S 63 E; 2024 Mercedes-Benz AMG S 63 E; 2026 Mercedes-Benz AMG S 63 E 4MATIC+; 2024 Mercedes-Benz AMG SL63 S E; 2024 Mercedes-Benz AMG SL63 S E Performance 4MATIC+; 2026 Mercedes-Benz AMG SL63 S E Performance 4MATIC+; 2024 Mercedes-Benz E 450 4MATIC ALL-Terrain; 2025 Mercedes-Benz E 450 4MATIC ALL-Terrain; 2026 Mercedes-Benz E 450 4MATIC ALL-Terrain; 2026 Mercedes-Benz E53 E 4MATIC+ ALL-Terrain; 2024 Mercedes-Benz Redundant EQE 350; 2023 Mercedes-Benz Redundant EQE 350 4MATIC; 2023 Mercedes-Benz Redundant EQS 450; 2024 Mercedes-Benz Redundant EQS 450; 2020 Mercedes-Benz S 550.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Common questions
Source: NHTSA, 49 CFR 579.5Is Mercedes-Benz LI54.71-P-079104 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the LI54.71-P-079104 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does LI54.71-P-079104 cover?
The manufacturer filed it against 91 model years: 2026 Mercedes-Benz AMG GT, 2025 Mercedes-Benz AMG GT, 2024 Mercedes-Benz AMG GT, 2023 Mercedes-Benz AMG GT, 2021 Mercedes-Benz AMG GT, 2020 Mercedes-Benz AMG GT and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.