Mercedes-Benz bulletin LI46.35-P-076566
What it saysComplaint A squeaking noise comes from the electric power steering; see video with example. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Mar 10, 2025, received Mar 14, 2025, about the suspension. It names 26 model years (2021–2024). 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 A squeaking noise comes from the electric power steering; see video with example. Cause Toothed rack in the area of the screw drive of the electric power steering needs additional grease. Remedy 1. Lift the vehicle and remove the center engine compartment lining; for basic data, see WIS AR61.20-P-1105S 2. Loosen the bellows of the electric power steering on the right of the steering gear and slide outward on the tie rod – the tie rods do not need to be removed! For basic data, see WIS AR46.40-P-9998S 3. Turn the wheels fully to the right. The screw drive of the rack-and-pinion steering becomes visible. See picture 1 of screw drive 4. Clean the screw drive with a clean cloth and remove the existing grease. See picture 2 of cleaned screw drive 5. Prepare a clean brush for greasing the screw drive and, if necessary, mask off the metal sleeve of the brush or similar components to avoid damage to the steering housing or to the screw drive of the toothed rack. See picture 3 with example brush 6. Apply a sufficient amount of long-life grease (A001 989 84 51 09) to the screw drive of the toothed rack with the brush, making sure that this is applied evenly all around; see picture 4 of greased screw drive 7. Reinstall the steering bellows, making sure to replace the inner clamp! Important: The contact surfaces of the bellows and the rack-and-pinion steering should be coated with a thin layer of Renolit (Renolit CX-FO 20, A094 989 38 00 11). For basic data, see WIS AR46.40-P-9998S 8. Move the rack-and-pinion steering several times from one steering limitation to the other to ensure that the grease is evenly distributed in the housing. 9. Assemble in the reverse order.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI46.35-P-076566 | Service bulletin | Mar 10, 2025 | 11015614 | PDF, 14,615 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.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2023 Mercedes-Benz AMG S 63 E 4MATIC+; 2024 Mercedes-Benz AMG S 63 E 4MATIC+; 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 19 model years this bulletin names have filed 468 complaints with NHTSA since 2015. 1 of them name Suspension — 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.
Mercedes-Benz S580 equipped with 21-inch wheels has experienced numerous tire blowouts over the course of ownership — too many to count. The blowouts occurred during normal driving on typical roads. Several blowouts caused rim damage and created a dangerous situation, including moments where I nearly lost control of the vehicle.
2022 Mercedes-Benz S-Class · Suspension · filed with NHTSA Dec 7, 2025 · ODI 11703501
While driving my 2024 Mercedes-Benz S580, I have experienced multiple serious safety issues affecting both the power train and the wheels/tires. 1.Power Train / Transmission Failure: On two separate occasions at freeway speeds, the vehicle suddenly lost all power and came to a complete stop in the middle of the lane.
2024 Mercedes-Benz S-Class · Suspension · filed with NHTSA Oct 22, 2025 · ODI 11694946
Dealership: Mercedes-Benz of Santa Fe, 2586 Camino Entrada, Santa Fe, NM 87507 I am filing this complaint regarding multiple unresolved safety defects in my 2024 Mercedes-Benz C300 persisting across numerous repair visits since February 2026.
2024 Mercedes-Benz C-Class · Suspension · filed with NHTSA Jun 11, 2026 · ODI 11743560
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 suspension
Source: same model, same component group19 other manufacturer communications filed against these Mercedes-Benz models under the same component group (suspension), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| PSL-NCU Return Parts 9/18 | Other | Sep 18, 2026 | Dear Dealer Partners, The part numbers listed in the chart below should no longer be installed and any existing stock must be returned to yo… |
| LI33.20-P-078406 | Service bulletin | Jul 8, 2026 | Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements and/or Creaking/crackling… |
| LI35.31-P-080609 | Service bulletin | Jun 13, 2026 | Complaint Consistent popping sound from rear of vehicle. AND Rear subframe manufactured on or after November 2025. Cause Under determination… |
| LI40.10-P-061032 | Service bulletin | May 15, 2026 | Complaint Noises at the front axle when cornering or maneuvering (video files attached) Note: Save video files locally and play them with Wi… |
| LI35.10-P-078931 | Service bulletin | May 13, 2026 | Complaint Potential corrosion on the rear axle carrier Cause Due to market-specific conditions such as moisture, ingress of dirt and/or envi… |
| LI32.35-P-079752 | Service bulletin | Feb 13, 2026 | Complaint Shock symbol in instrument cluster with "Do Not Drive Over 50MPH" message AND DTC's in A108/2 or A108/3: U013281 - Communication w… |
| LI32.34-P-080258 | Service bulletin | Feb 9, 2026 | Complaint "Do Not Drive Over 50MPH" Suspension Message in Instrument Cluster Possible DTC's in Quicktest: C128763 in N51/1 - "The pressure c… |
| LI32.25-P-079706 | Service bulletin | Jan 30, 2026 | Complaint: Clattering noise from area of hood with steel suspension. Cause: Missing helical spring shim… |
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 LI46.35-P-076566 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 LI46.35-P-076566 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 LI46.35-P-076566 cover?
The manufacturer filed it against 26 model years: 2024 Mercedes-Benz C-Class, 2023 Mercedes-Benz C-Class, 2022 Mercedes-Benz C-Class, 2024 Mercedes-Benz CLE-Class, 2024 Mercedes-Benz E-Class, 2024 Mercedes-Benz EQE and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.