Mercedes-Benz bulletin LI18_40-N-080867_1_en
What it saysOM654 Engine Oil Consumption Complaint The customer may report repeated low engine oil level warnings in the instrument cluster. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Aug 5, 2026, received Sep 3, 2026, about the power train. It names 4 model years (2023–2026). 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 communicationOM654 Engine Oil Consumption Complaint The customer may report repeated low engine oil level warnings in the instrument cluster. The customer may also state that engine oil must be added between scheduled maintenance intervals. During diagnosis, oil residue may be observed at the oil filler neck, cylinder head cover, crankcase ventilation connection, charge air pipes, charge air cooler, intake tract, or turbocharger area. In some cases, the complaint may be accompanied by increased diesel particulate filter (DPF) regeneration frequency or aftertreatment‑related fault entries. Cause Increased engine oil consumption may be caused by external oil leakage, crankcase ventilation system concerns, reduced oil separation efficiency in the cylinder head cover, turbocharger oil leakage, charge air system oil accumulation, fuel dilution, vehicle operating profile, oil level sensor plausibility concerns, or internal engine mechanical damage. A measured engine oil consumption test is required before a repair direction is determined. Customer‑reported oil additions or instrument cluster oil level messages alone are not sufficient to determine the repair. Remedy 1. Perform the engine oil consumption measurement according to AR18.00‑D‑ 0025TSM. 2. If the measured oil consumption is within specification, no repair related to engine oil consumption is required. • Verify the correct engine oil specification and review the vehicle operating profile, maintenance history, idle time, and regeneration frequency. If the complaint is based mainly on an oil level message and measured oil consumption is not confirmed, verify oil level sensor plausibility before continuing with engine oil consumption diagnosis. 3. If the measured oil consumption exceeds specification, inspect the engine for external oil leaks. • Pay close attention to the oil filler neck, oil filler neck seal, cylinder head cover area, oil filter housing, crankcase ventilation connections, turbocharger oil supply and return areas, and other visible sealing points. 4. If an external oil leak is identified, repair the leak according to the applicable repair instructions. • Correct the engine oil level and repeat the oil consumption measurement if necessary. 5. Inspect the crankcase ventilation connection, turbocharger inlet and outlet, charge air pipes, and charge air cooler for oil accumulation. • A light oil film alone
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI18_40-N-080867_1_en | Service bulletin | Aug 5, 2026 | 11036851 | PDF, 43 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 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 4 model years this bulletin names have filed 58 complaints with NHTSA since 2015. 12 of them name Power Train — 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.
The High-Pressure Fuel Pump (HPFP) and corresponding fuel delivery pressure regulator/sensors have suffered an internal mechanical failure. The system intermittently fails to maintain commanded rail pressure, leading to critical engine cylinder misfires (P0302, P0304) and severe long-term fuel adaptation breaches (P00C600, P008992…
2023 Mercedes-Benz Sprinter · Power Train · filed with NHTSA Oct 11, 2026 · ODI 11770454
Subject: Transmission Failure Safety Complaint I am submitting a complaint regarding a serious transmission problem with my vehicle. While driving, the transmission suddenly failed, and the vehicle lost the ability to move properly. The car would not accelerate as expected and had difficulty.
2025 Mercedes-Benz Sprinter · Power Train · filed with NHTSA Apr 30, 2026 · ODI 11734794
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 power train
Source: same model, same component group12 other manufacturer communications filed against the Mercedes-Benz Sprinter under the same component group (power train), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI27_20_N_080998_1 | Service bulletin | Sep 25, 2026 | Sprinter 907 with 725.0 (NAG3 Classic) Transmission ‑ Shudder during acceleration Complaint Shudder may be felt in the following situations:… |
| LI28_00-N-079097_1_en | Service bulletin | Aug 26, 2026 | Complaint While driving through muddy / sandy/ off road terrain "4Matic Currently Unavailable" message on the dash Cause This vehicle is not… |
| LI20_10-N-080868_1_en | Service bulletin | Aug 6, 2026 | Complaint The coolant warning lamp may be displayed in the instrument cluster. The malfunction indicator lamp (MIL) may also be illuminated.… |
| LI33_30-N-080795 | Service bulletin | Jul 17, 2026 | Model 907 with all-wheel drive (A4M) – All-wheel drive inoperative Complaint The customer may report one or more of the following: • All-whe… |
| LI09_40-N-079144 | Service bulletin | Jun 29, 2026 | Complaint The check engine light is activated, accompanied by one or more of the following fault codes related to the Boost Pressure Positi… |
| LI00.20-N-080626 | Service bulletin | Jun 2, 2026 | Complaint ASSYST values in XENTRY actual values and workshop menu of instrument cluster are implausibly excessive. Infor-mation: According… |
| LI35.00-N-080267_1 | Service bulletin | May 26, 2026 | Sprinter 907 - Rear Axle Noise Diagnosis Best Practices Complaint Various noises from area of rear axle while driving Cause A: Howling Noise… |
| LI28.00-N-063339 | Service bulletin | Dec 1, 2025 | Clunking noise on load change or gear engagement Complaint Clunking noise can be heard on some load changes or when changing from N->R or N… |
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 LI18_40-N-080867_1_en 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 LI18_40-N-080867_1_en 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 LI18_40-N-080867_1_en cover?
The manufacturer filed it against 4 model years: 2026 Mercedes-Benz Sprinter, 2025 Mercedes-Benz Sprinter, 2024 Mercedes-Benz Sprinter, 2023 Mercedes-Benz Sprinter. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.