Mercedes-Benz bulletin LI18_40-N-080867_1_en
Mercedes-Benz filed this with NHTSA as a service bulletin dated Aug 5, 2026, received Sep 3, 2026, about the power train. It names 5 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.
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 | not yet checked |
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: 2026 Mercedes-Benz Sprinter 2500; 2026 Mercedes-Benz Sprinter 3500.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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.
Which vehicles does LI18_40-N-080867_1_en cover?
The manufacturer filed it against 5 model years: 2025 Mercedes-Benz Sprinter, 2024 Mercedes-Benz Sprinter, 2023 Mercedes-Benz Sprinter, 2026 Mercedes-Benz Sprinter 2500, 2026 Mercedes-Benz Sprinter 3500. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.