Mercedes-Benz bulletin LI46.15-P-078766
What it saysComplaint Play noticeable in the height adjustment of the steering column. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Jan 8, 2025, received Jan 10, 2025, about the steering. It names 48 model years (2016–2025). 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 Play noticeable in the height adjustment of the steering column. See arrow direction in attached pictures. Cause Slipped thrust bearing ring on the height adjustment. Remedy Install repair kit for height adjustment of the steering column. For tightening torque, see attachment.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI46.15-P-078766 | Service bulletin | Jan 8, 2025 | 11012802 | PDF, 136 KB |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| A2054603803 | Repair kit for height adjust | — | 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 themand 2 more on this site: 2023 Mercedes-Benz SL-Class, 2022 Mercedes-Benz SL-Class.
Also filed against model years this site has no page for: 2024 Mercedes-Benz AMG C63 S E; 2024 Mercedes-Benz AMG SL63 S E; 2024 Mercedes-Benz Redundant EQE 350; 2023 Mercedes-Benz Redundant EQE 350 4MATIC; 2023 Mercedes-Benz Redundant EQS 450; 2024 Mercedes-Benz Redundant EQS 450.
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 42 model years this bulletin names have filed 1,098 complaints with NHTSA since 2015. 3 of them name Steering — 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.
GLS 450 of this model year were recalled for failing Steering Coupling Locking Screws. While my car was not recalled it is exhibiting similar symptoms involving creaking sounds at low speeds when the engine has warmed up. The recall should be expanded
2021 Mercedes-Benz GLS-Class · Steering · filed with NHTSA Oct 20, 2026 · ODI 11772417
While driving, the vehicle’s lane keeping system applied an unintended and aggressive steering input during a lane change. I was merging left when the system suddenly forced the steering sharply to the right without driver command.
2024 Mercedes-Benz EQS · Steering · filed with NHTSA Nov 18, 2025 · ODI 11700001
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 steering
Source: same model, same component group18 other manufacturer communications filed against these Mercedes-Benz models under the same component group (steering), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI46.10-P-080896 | Service bulletin | Sep 26, 2026 | Complaint Slight creaking noises when steering. Cause Noises may come from one or more sleeves of the horn contact plate. Remedy Remove the… |
| LI46.10-P-077314 | Service bulletin | Sep 25, 2026 | Complaint Noises in the steering column area when steering. See example file in the attachments area: "MRSM‑Schleifgeräusch_SCCMGrindingNois… |
| LI46.35-P-067339 | Service bulletin | Aug 28, 2026 | Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time. OR Rattling, hummi… |
| LI46.00-P-079786 | Service bulletin | Aug 28, 2026 | Complaint Noise from front end thought to be from steering gear. Cause During diagnostics of a front end noise, workshop is under the impres… |
| LI46.80-P-080662 | Service bulletin | Jun 1, 2026 | Complaint Rattling/knocking noise from the rear axle steering is audible when driving on rough terrain or cobblestones. Large play in the re… |
| LI46.15-P-070510 | Service bulletin | May 22, 2026 | Complaint Noises from the area of the steering column. - Creaking - Squeaking - Chattering - Humming - Grinding Cause At present, there are… |
| LI46.80-P-079280 | Service bulletin | Mar 27, 2026 | Complaint Rattling/knocking noise from the rear axle steering is audible when driving on rough terrain or cobblestones. Excessive radial pla… |
| LI82.90-P-080159 | Service bulletin | Feb 28, 2026 | Complaint Stored DTC C220564 - "There is an internal fault in the steering angle sensor. There is an implausible signal." In the quick test… |
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 LI46.15-P-078766 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 LI46.15-P-078766 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 LI46.15-P-078766 cover?
The manufacturer filed it against 48 model years: 2024 Mercedes-Benz AMG GT, 2024 Mercedes-Benz C-Class, 2023 Mercedes-Benz C-Class, 2022 Mercedes-Benz C-Class, 2024 Mercedes-Benz CLE-Class, 2025 Mercedes-Benz E-Class and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.