Mercedes-Benz bulletin LI54.10-P-076742
What it saysThe red battery light in the instrument cluster lights up while driving. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Jul 27, 2023, received Aug 2, 2023, about the electrical system. It names 9 model years (2016–2021). 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.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThe red battery light in the instrument cluster lights up while driving. Voltage drop in alternator / battery / chassis main circuit.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI54.10-P-076742 | Service bulletin | Jul 27, 2023 | 10240161 | PDF, 308 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| A0009826205 | Starter battery 1 X | — | eBay Motors → |
| A0009061705 | Alternator 1 X | — | eBay Motors → |
| A2125407150 | Fuse box (F32/3) 1 X | — | eBay Motors → |
Read by machine from the document NHTSA serves (6 pages), read Sep 30, 2026. A part number is shown only where it matches Mercedes-Benz’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. 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. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2017 Mercedes-Benz AMG GT C Roadster; 2020 Mercedes-Benz AMG GT S; 2018 Mercedes-Benz AMG GTA.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 6 model years this bulletin names have filed 27 complaints with NHTSA since 2015. 5 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
My 2021 Mercedes-Benz AMG GT 43, VIN , has had a recurring safety issue with the transmission wiring harness and connector X279. Mercedes-Benz said this connector can let water in, which can cause a short circuit, overheating, and a fire risk while the car is parked and off.
2021 Mercedes-Benz AMG GT · Electrical System · filed with NHTSA May 25, 2026 · ODI 11739859
There is no later record of the recall ever being completed. After the recall was marked “Completed,” multiple paid repairs were performed in the same system, including extensive electrical and engine-related work, totaling several thousand dollars.
2019 Mercedes-Benz AMG GT · Electrical System · filed with NHTSA Nov 14, 2025 · ODI 11699400
The contact owns a 2020 Mercedes-Benz AMG GT53. The contact stated that while driving at an undisclosed speed, the check engine warning illuminated. Additionally, while depressing the accelerator pedal, there was a misfire coming from the engine.
2020 Mercedes-Benz AMG GT · Electrical System · filed with NHTSA Sep 17, 2026 · ODI 11765097
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the electrical system
Source: same model, same component group73 other manufacturer communications filed against these Mercedes-Benz models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI54.71-P-079104 | Service bulletin | Sep 11, 2026 | Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the foll… |
| LI54.21-P-080326 | Service bulletin | Sep 9, 2026 | Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167, 465: SW has been released. Update the FSAM to th… |
| LI54.65-P-080132 | Service bulletin | Aug 12, 2026 | Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist… |
| LI54.10-P-080880 | Service bulletin | Aug 12, 2026 | Complaint Customer Complaint: - AC charging is not possible. - The departure time, charging pause, location-based charging or target SOC lim… |
| LI82.60-P-080806 | Service bulletin | Aug 4, 2026 | Complaint After an "Over the Air" update (OTA), FM or SDARS radio reception is limited; only a few stations are found. Cause The firmware in… |
| LI46.10-P-078012 | Service bulletin | Jul 17, 2026 | Complaint Hand detection system – malfunction / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist no… |
| LI00.20-P-077615 | Service bulletin | Jul 1, 2026 | The following symptoms may be present in the instrument cluster: 1. "Perform vehicle handover" in the workshop menu to start the maintenanc… |
| LI54.10-P-080053 | Service bulletin | Jun 16, 2026 | Complaint Discharge of 12 V battery in the event of a longer non-operational time - model series 232 and model series 192 Cause Increased qu… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Mercedes-Benz, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Mercedes-Benz LI54.10-P-076742 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 LI54.10-P-076742 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. Every Mercedes-Benz warranty extension on file lists the ones Mercedes-Benz has filed.
Which vehicles does LI54.10-P-076742 cover?
The manufacturer filed it against 9 model years: 2021 Mercedes-Benz AMG GT, 2020 Mercedes-Benz AMG GT, 2019 Mercedes-Benz AMG GT, 2018 Mercedes-Benz AMG GT, 2017 Mercedes-Benz AMG GT, 2016 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.