Mercedes-Benz bulletin LI82.62-P-076756
What it saysPerceptible volume jumps at 15 and 10 mph. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Jul 28, 2023, received Aug 2, 2023, about the equipment. It names 2 model years (2022–2023). 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 communicationPerceptible volume jumps at 15 and 10 mph. When reducing the speed of the vehicle, the volume is reduced in clearly perceptible jumps. This is particularly perceptible at a moderate basic volume (i.e. lower than typical levels of household noise). Software in sound control unit SND7 (N40/3) Currently no remedy available. Replacing the hardware will not remedy the problem! Remedy will be available with next software version for sound control unit (Q4/2023)
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI82.62-P-076756 | Service bulletin | Jul 28, 2023 | 10240159 | PDF, 38 KB |
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.
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Model years it names
Source: as the manufacturer filed themA 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 2 model years this bulletin names have filed 128 complaints with NHTSA since 2015.
The contact owns a 2023 Mercedes-Benz GLC300 4Matic. The contact stated that while driving at various speeds and coming to a stop, the vehicle skidded or slid and felt like it had been rear-ended. There was no warning light illuminated. The vehicle was taken to the dealer, but the failure could not be duplicated.
2023 Mercedes-Benz GLC-Class · Equipment · filed with NHTSA Sep 5, 2025 · ODI 11685231
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 equipment
Source: same model, same component group2 other manufacturer communications filed against the Mercedes-Benz GLC-Class under the same component group (equipment), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| NCU - 2024030010 | Service bulletin | Mar 22, 2024 | This is to notify you of the Service Campaign Launch to update the digital and replace the printed operators manual in 39 Model Year (MY) 20… |
| LI82.70-P-076832 | Service bulletin | Aug 21, 2023 | Phone call log is not shown in the MBUX display. If the telephone connects with the head unit again, the call log may not be sent. Curre… |
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 LI82.62-P-076756 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 LI82.62-P-076756 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 LI82.62-P-076756 cover?
The manufacturer filed it against 2 model years: 2023 Mercedes-Benz GLC-Class, 2022 Mercedes-Benz GLC-Class. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.