Mercedes-Benz bulletin LI49.10-N-080528
What it saysOM642 DPF Filter Cracked or Broken Complaint Vehicle will not start or exhibits noisy exhaust. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Jun 3, 2026, received Jul 2, 2026, about the fuel/propulsion system. It names 11 model years (2016–2023). 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 communicationOM642 DPF Filter Cracked or Broken Complaint Vehicle will not start or exhibits noisy exhaust. Check Engine Lamp (CEL) is on. Multiple control unit communication and system faults may be present, including but not limited to: 134800, 134900, 11B300, 11EC00, 15E100, 155700, 162500. Additional events codes may include: 134300, 102200, 163400, 16CE00. In many cases, multiple unrelated faults are stored due to electrical disruption from wiring damage rather than indivi-dual component failure. Cause The DPF filter is cracked, broken, or leaking, allowing hot exhaust gas to escape from the exhaust system. Depending on the location of the break or leak, hot exhaust gas may be directed toward the main wiring harness and/ or the SCR (Selective Catalytic Reduction) dosing valve assembly. This heat exposure can result in: • Internal melting of wiring insulation within the harness • Short to ground conditions and loss of communication between control units • Damage to the dosing valve and/or heated AdBlue line Damage to the wiring harness may not be visible externally, as the outer tape can remain intact while the internal wires are melted and fused together. Remedy Inspect the DPF assembly for cracks, separation, or leakage. Do not proceed with further diagnosis or component replacement until the exhaust leak source has been identified and confirmed. If any damage is found, replace the DPF filter assembly. Based on the location of the failure, inspect all components in the path of the exhaust leak, including the dosing valve assembly and main wiring harness. The wiring harness must be opened in any area exposed to the exhaust leak to visually inspect the individual wires. External inspection alone is not sufficient to determine harness condition. Repair or replace any damaged wiring in accordance with approved repair procedures. Replace any dosing system components that show signs of heat damage. Failure to identify and repair all heat-affected components will result in repeat faults or no-start conditions.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI49.10-N-080528 | Service bulletin | Jun 3, 2026 | 11034416 | PDF, 753 KB |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| A9064905581 | Exhaust System DPF / O2 Ca | — | eBay Motors → |
Read by machine from the document NHTSA serves (8 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 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 11 model years this bulletin names have filed 370 complaints with NHTSA since 2015. 45 of them name Fuel/Propulsion System — 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.
On the 2016 Mercedes-Benz Metris, the 22 owners who gave an odometer reading for Fuel/Propulsion System reported it at a median of 35,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Recently took my vehicle in to get the brakes check and inspected. Technician at Mercedes Benz noticed a fuel leak in the upper fuel line. We both thought was very odd because the vehicle only has 35k miles on it and the line is visibly in great condition. I did a little research and found that there was a recall for this exact issue.
2022 Mercedes-Benz Metris · Fuel/Propulsion System · filed with NHTSA Sep 10, 2025 · ODI 11686351
My 2022 Mercedes-Benz Metris recently experienced a sudden onset of engine issues, triggering the Check Engine Light. Diagnostic data retrieved from the vehicle (via onboard telematics) revealed the following error codes via onboard OBD GPS Bouncie: P0300: Random/Multiple Cylinder Misfire Detected P0301: Cylinder 1 Misfire Detected…
2022 Mercedes-Benz Metris · Fuel/Propulsion System · filed with NHTSA Nov 25, 2025 · ODI 11701543
The contact owns a 2022 Mercedes-Benz Metris. The contact received notification of NHTSA Campaign Number: 23V881000 (FULL SYSTEM, GASOLINE); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair.
2022 Mercedes-Benz Metris · Fuel/Propulsion System · filed with NHTSA Oct 7, 2024 · ODI 11618579
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 fuel/propulsion system
Source: same model, same component group11 other manufacturer communications filed against these Mercedes-Benz models under the same component group (fuel/propulsion system), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI07_02-N-079573_2_en | Service bulletin | Aug 5, 2026 | Oil Leak at Crankcase Near the High-pressure Fuel Pump OM654 Complaint Visible oil leak at the crankcase near the mounting area of the high‑… |
| LI07.16-N-080732 | Service bulletin | Jun 18, 2026 | Complaint The customer reports that the engine cranks but does not start, or only starts after extended cranking. A check engine light may… |
| LI47_00-N-069565 | Service bulletin | Jun 16, 2026 | Fuel Level Unchanged After Refueling Complaint The customer reports that the fuel gauge shows inaccurate readings or remains unchanged after… |
| LI49.20-N-078466_4 | Service bulletin | May 8, 2026 | Check engine light with fault code P3005CA in MRD1 (CDI) Complaint The check engine light is on, with a possiblility in a reduction of power… |
| LI47.50-N-072080_4 | Service bulletin | May 7, 2026 | Check engine light on and FC P146264 stored in engine and fuel pump control units Complaint Check engine light active and FC P146264 Temp. a… |
| LI4700N069565 | Service bulletin | Apr 29, 2026 | Complaint The customer reports that the fuel gauge shows inaccurate readings or remains unchanged after refueling. Cause A. The Fuel Supply… |
| LI49-20-N-080376 | Service bulletin | Mar 23, 2026 | The check engine light is illuminated, or the AdBlue warning is active, with recorded faults related to AdBlue quality or concentration. Com… |
| LI49.20-N-078838 | Service bulletin | Mar 23, 2026 | Check engine light or Adblue warning with fault codes P206B31, P203B31, or P300494 present in AdBlue (SCR) control unit (N118/5) Complaint T… |
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 LI49.10-N-080528 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 LI49.10-N-080528 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 LI49.10-N-080528 cover?
The manufacturer filed it against 11 model years: 2023 Mercedes-Benz Metris, 2022 Mercedes-Benz Metris, 2021 Mercedes-Benz Metris, 2020 Mercedes-Benz Metris, 2019 Mercedes-Benz Metris, 2018 Mercedes-Benz Metris and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.