Mercedes-Benz bulletin LI77.25-P-076544
What it saysRear spoiler sporadically remains in opened or closed position and a fault message appears in the instrument cluster. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Feb 14, 2024, received Jul 3, 2023, about the structure — 3 documents under this number. It names 5 model years (2022–2024). 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 communicationRear spoiler sporadically remains in opened or closed position and a fault message appears in the instrument cluster. The rear spoiler can then no longer be actuated manually using the button. The function of the rear spoiler is re-established after an ignition reset and the fault message is no longer present in the instrument cluster. Software of the AMG DRIVE UNIT. All vehicles of model series 232 with M177 (SL55/63) from start of production - end of modification year 22/1 - manufacturing date before April 21, 2023: --> Perform software update of the AMG DRIVE UNIT N145/1 to Latest SW Available. All vehicles of model series 232 with M177 (SL55/63) from start of modification year 22/2 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1. Valid for all vehicles of model series 232 with M139L (SL43) from start of modification year 22/1 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1.All vehicles of model series 232 with M177 (SL55/63) from start of production - end of modification year 22/1 - manufacturing date before April 21, 2023: --> Perform software update of the AMG DRIVE UNIT N145/1 to Latest SW Available. All vehicles of model series 232 with M177 (SL55/63) from start of modification year 22/2 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1. Valid for all vehicles of model series 232 with M139L (SL43) from start of modification year 22/1 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI77.25-P-076544 | Service bulletin | Feb 14, 2024 | 10251119 | PDF, 77 KB |
| LI77.25-P-076544 | Service bulletin | Aug 18, 2023 | 10241517 | PDF, 39 KB |
| LI77.25-P-076544 | Service bulletin | Jun 20, 2023 | 10238420 | PDF, 38 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| A 001 902 49 02 | — | — | |
| A 000 902 61 96 | — | — |
Read by machine from the document NHTSA serves (2 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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the software for the 2024 SL-Class →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2022 Mercedes-Benz AMG SL43; 2024 Mercedes-Benz AMG SL63 S E.
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 3 model years this bulletin names have filed 10 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 mom and I were in her car brand new Mercedes adaptive cruise was on the car started to act up with all the warning lights again, which shut all safety systems down air back seatbelts, adaptive cruise, Tronics and the engine wall between 18 wheeler and the freeway wall slammed the vehicle into the freeway hall causing about $5000 worth…
2023 Mercedes-Benz SL-Class · Electrical System · filed with NHTSA Jan 21, 2025 · ODI 11637467
The contact owns a 2022 Mercedes-Benz AMG SL55. The contact stated that upon entering the vehicle, the vehicle failed to detect the presence of the key, after which the vehicle failed to start. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to determine the cause of the failure.
2022 Mercedes-Benz SL-Class · Electrical System · filed with NHTSA Aug 19, 2024 · ODI 11609466
The electrical systems drains the two batteries after the car sits idle for a few hours. If it can be started, many of the safety features are inoperable until the car is driven for 30 or 40 minutes. I've had it to multiple Mercedes dealers and all they do is re-charge the battery and told me to get a trickle charger.
2022 Mercedes-Benz SL-Class · Electrical System · filed with NHTSA Sep 10, 2025 · ODI 11686246
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 structure
Source: same model, same component group11 other manufacturer communications filed against these Mercedes-Benz models under the same component group (structure), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI82.62-P-078631 | Service bulletin | Sep 14, 2026 | Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all rem… |
| LI72.20-P-075746 | Service bulletin | Aug 24, 2026 | Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EX… |
| PSL-NCU Return Parts 7/3 | Other | Jul 3, 2026 | Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be ret… |
| LI88.50-P-080263 | Service bulletin | Jul 1, 2026 | Complaint The trunk lid does not open or close completely and must be operated manually by the customer. The following fault codes are store… |
| LI67.30-P-080343 | Service bulletin | Mar 11, 2026 | Complaint Wind noises in the area of the mirror triangle on the front doors/side window panes Cause Potential causes: • Adjustment of the si… |
| LI61.20-P-077105 | Service bulletin | Sep 3, 2025 | Complaint Cracking/clicking noise from underbody when driving slowly (around curves); see attachment. Cause Potential causes: • Assembly of… |
| LI72.10-P-074316 | Service bulletin | Oct 23, 2024 | Complaint • The flush-mounted door handle could jam when it is pulled out and may move in a jerky manner when doing so. • In the area of the… |
| LI98.00-P-078106 | Service bulletin | Sep 10, 2024 | Complaint Damage or discoloration to paint protection films on vehicle. Cause Chip protection films are a wear item that may need to be repl… |
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 LI77.25-P-076544 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 LI77.25-P-076544 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 LI77.25-P-076544 cover?
The manufacturer filed it against 5 model years: 2024 Mercedes-Benz SL-Class, 2023 Mercedes-Benz SL-Class, 2022 Mercedes-Benz SL-Class, 2022 Mercedes-Benz AMG SL43, 2024 Mercedes-Benz AMG SL63 S E. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.