Mercedes-Benz bulletin LI65.10-P-078300
What it saysComplaint Indentations in the roof paneling in row bow areas. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Sep 10, 2024, received Sep 13, 2024, about the structure. It names 4 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 communicationComplaint Indentations in the roof paneling in row bow areas. Note: This is within the surface area of the roof skin when no sunroof is applicable. See attached photo. Cause Flexibility of adhesive joint between roof bow and roof paneling. Remedy 1 - Remove headliner, see AR68.30-P-4300WT. 2 - Cut open adhesive bead in area of visible deformation in roof paneling using a cutting wire at the roof bows. *Caution: Do not damage coating on inside of roof paneling. 3 - Relieve tension of outer skin of roof by applying heat (sun or paint drying booth). 4 - Check again if indentations are still visible. If yes, continue cutting open bead. Otherwise, move on to the next point 5 - Only continue with further operations after roof paneling has cooled down. 6 - Touch up any paint damage on roof bow or inside of roof paneling using touch-up paint pen/primer stick. 7 - Finally, apply adhesive sealing compound using cartridge gun. Apply the material here to the cut open gap and flat onto the surrounding old adhesive sealing compound. Make sure that the adhesive sealing compound makes contact between the roof bow and the roof paneling. 8 - Install headliner, see AR68.30-P-4300WT. Disclaimer NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI65.10-P-078300 | Service bulletin | Sep 10, 2024 | 11007751 | PDF, 86 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| A 002 989 84 20 | Adhesive sealant 1 Teroson 9320 SF as alternative ad | — | eBay Motors → |
| A005 989 87 20 | Adhesive sealant 1 Sikaflex 515 as alternative adhesive | — | eBay Motors → |
| A012 989 14 71 | Adhesive sealant 1 Teroson MS 222 as alternative adhe | — | eBay Motors → |
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 body for the 2024 C-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: 2024 Mercedes-Benz AMG C63 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 67 complaints with NHTSA since 2015.
While driving at 60mph my panoramic sunroof completely shattered. Nothing at all hit the sunroof to cause it to shatter. If my sunshade cover had not been on, the glass would have fallen on me while operating my vehicle. This is not only dangerous but unacceptable. It was also a distraction that could have caused an accident.
2023 Mercedes-Benz C-Class · Structure · filed with NHTSA May 23, 2025 · ODI 11662742
While driving on the highway with the panoramic sunroof open, the glass suddenly shattered, sounding like a gunshot or an explosion. Shards of glass flew into the vehicle and rained down on me, creating a very hazardous driving situation. I did not observe any foreign object that could have caused the sunroof to break
2024 Mercedes-Benz C-Class · Structure · filed with NHTSA Mar 31, 2026 · ODI 11728393
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 group15 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… |
| LI77.30-P-070145 | Service bulletin | Apr 28, 2026 | Complaint Damaged cords/tensioning cables at the soft top interior trim with the following characteristics: - Cord/tensioning cable torn - C… |
| NCU - 2025120008 | Service campaign | Jan 10, 2026 | Additional loose or jammed fasteners may be present in the area between the front axle torsion bar and integral carrier, which might result… |
| LI72.12-P-076175 | Service bulletin | Sep 15, 2025 | Complaint Seal secured to B-pillar trim on rear doors cracked in upper area, see picture 1. Cause Production deviation at supplier of B-pill… |
| LI88.60-P-079592 | Service bulletin | Jul 31, 2025 | Complaint Fuel filler flap/socket flap sticks, cannot be opened Cause Under analysis. Remedy Create TIPS case with fault description and vid… |
| LI88.60-P-072093 | Service bulletin | Jan 24, 2025 | Complaint Fuel door may require several attempts to open. Please note that if the complaint "Fuel filler flap not opening" occurs, it is imp… |
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 LI65.10-P-078300 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 LI65.10-P-078300 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 LI65.10-P-078300 cover?
The manufacturer filed it against 4 model years: 2024 Mercedes-Benz C-Class, 2023 Mercedes-Benz C-Class, 2022 Mercedes-Benz C-Class, 2024 Mercedes-Benz AMG C63 S E. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.