Mercedes-Benz bulletin LI42.10-P-076753
What it saysComplaint Brake squeal Cause Frictional vibrations. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Jul 28, 2023, received Aug 2, 2023, about the service brakes. It names 3 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 communicationComplaint Brake squeal Cause Frictional vibrations. There is no effect to braking capability. Remedy >> Refer to LI42.10-P-063502. If bedding in the brakes does not remedy the issue: a) If the noises are coming from the front axle => Affix linings with biadhesive film (see attachments for front axle) 1. Remove brake linings of front axle 2. Cleaning all contact points on brake lining and brake caliper/carrier 3. Apply an adhesive film to the backplate of the piston-side brake lining (only in the area of the center piston) 4. Position and affix brake pad foil as per the attachment (clean bonding surface) 5. After installing the brake linings, actuate the brake for 30 seconds b) If the noises are coming from the rear axle => Grease the lining as per the specification (see attachments for rear axle) 1. Remove brake pads of rear axle 2. Cleaning all contact points on brake lining and brake caliper/carrier 3. Grease contact points (red areas) between brake lining and guide of brake caliper with heat-resistant lubricating paste A001 989 87 51 4. Be absolutely certain to not allow paste between friction surfaces of the pad and disc! If no remedy is possible with these measures, please create a TIPS case.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI42.10-P-076753 | Service bulletin | Jul 28, 2023 | 10240155 | PDF, 415 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| A 190 423 32 00 | — | — | eBay Motors → |
| A 000 989 8751 | — | — | eBay Motors → |
Read by machine from the document NHTSA serves (3 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: 2022 Mercedes-Benz AMG SL43.
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 2 model years this bulletin names have filed 9 complaints with NHTSA since 2015.
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 service brakes
Source: same model, same component group2 other manufacturer communications filed against these Mercedes-Benz models under the same component group (service brakes), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI42.10-P-063502 | Service bulletin | Sep 1, 2026 | Complaint Noises/ squealing from the service brake in various driving situations and ambient conditions. Cause Frictional vibrations Remedy… |
| EW - Pressure Trans M157 | Warranty extension | Mar 13, 2026 | In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Merce… |
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 LI42.10-P-076753 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 LI42.10-P-076753 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 LI42.10-P-076753 cover?
The manufacturer filed it against 3 model years: 2023 Mercedes-Benz SL-Class, 2022 Mercedes-Benz SL-Class, 2022 Mercedes-Benz AMG SL43. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.