Mercedes-Benz bulletin LI32.25-P-076956
What it saysWheezing noises from the front shock absorbers when passing over surface undulations and rough road. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Oct 12, 2023, received Nov 2, 2023, about the suspension. It names 22 model years (2016–2024). 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 communicationWheezing noises from the front shock absorbers when passing over surface undulations and rough road. The noises may become more conspicuous with warm damper oil. The flow noises of the damper oil are currently being analyzed. The wheezing noises are currently considered standard for the series. Replacing the shock absorbers will yield no benefit and will not remedy the problem. Please report complaints regarding these wheezing noises via TIPS.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI32.25-P-076956 | Service bulletin | Oct 12, 2023 | 10244735 | 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 themAlso filed against model years this site has no page for: 2021 Mercedes-Benz AMG E53 S; 2022 Mercedes-Benz AMG E63; 2022 Mercedes-Benz AMG E63S; 2023 Mercedes-Benz CLE 300; 2023 Mercedes-Benz CLE 450; 2016 Mercedes-Benz CLE 63S.
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 16 model years this bulletin names have filed 559 complaints with NHTSA since 2015.
Uneven wear pattern. The wear often occurs on inner shoulder of the tires 5k to9k miles,which can be dangerous tire can wear down to belts on inside edge while the outer tread still looks fine. i have brought this to dealership multiple time with NO FIX but to sale me new tires and alignments.
2020 Mercedes-Benz C-Class · Suspension · filed with NHTSA Nov 5, 2025 · ODI 11697729
This 2021 Mercedes-Benz GLC 63 AMG has experienced repeated and escalating warranty defects involving engine performance, loss of acceleration, air suspension failure, and now inoperative advanced safety systems including blind spot and active brake assist.
2021 Mercedes-Benz GLC-Class · Suspension · filed with NHTSA Mar 18, 2026 · ODI 11725180
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 group12 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… |
| 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… |
| LI32.25-P-079706 | Service bulletin | Jan 30, 2026 | Complaint: Clattering noise from area of hood with steel suspension. Cause: Missing helical spring shim… |
| LI46.80-P-080054 | Service bulletin | Dec 6, 2025 | Complaint An instrument cluster message "Rear axle steering fault, stop immediately" is very briefly illuminated in the instrument cluster u… |
| LI42.15-P-079899 | Service bulletin | Oct 28, 2025 | Complaint Brake squeal on the front axle at slow speed and before coming to a stop. Cause Frictional vibrations Remedy Install new brake lin… |
| LI32.25-P-079707 | Service bulletin | Oct 27, 2025 | Complaint Wheezing noises/squeaking noises from the front shock absorbers when passing over surface undulations and rough road. Noise MUST m… |
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 LI32.25-P-076956 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 LI32.25-P-076956 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 LI32.25-P-076956 cover?
The manufacturer filed it against 22 model years: 2024 Mercedes-Benz C-Class, 2023 Mercedes-Benz C-Class, 2022 Mercedes-Benz C-Class, 2021 Mercedes-Benz C-Class, 2020 Mercedes-Benz C-Class, 2024 Mercedes-Benz CLE-Class and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.