Mercedes-Benz service campaign NCU - 2024090001
What it saysMercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2024 GLB (247 platform) vehicles, the fuse assignment for the USB port in the rear passenger compartment does not… NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service campaign dated Sep 13, 2024, received Sep 17, 2024, about the electrical system. It names 1 model year (2024). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2024 GLB (247 platform) vehicles, the fuse assignment for the USB port in the rear passenger compartment does not correspond to current production specifications. It is possible that a 30 A fuse was installed instead of a 10 A fuse. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will replace the electrical fuse on the fuse and relay module.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| NCU - 2024090001 | Service campaign | Sep 13, 2024 | 11007860 | PDF, 633 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 1 model year this bulletin names have filed 6 complaints with NHTSA since 2015. 2 of them name Electrical 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.
Rear Camera malfunction The flap of the reversing camera opens and closes by itself during forward travel, making a loud thumb noise every time the car slows down to an intersection. No camera image is displayed in the head unit.
2024 Mercedes-Benz GLB-Class · Electrical System · filed with NHTSA Jul 28, 2025 · ODI 11676547
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 electrical system
Source: same model, same component group48 other manufacturer communications filed against the Mercedes-Benz GLB-Class under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI82.60-P-080383 | Service bulletin | Sep 15, 2026 | Complaint Radio station cover art does not refresh when switching stations. The UI continues to show the old station’s artwork instead of up… |
| LI54.21-P-080326 | Service bulletin | Sep 9, 2026 | Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167, 465: SW has been released. Update the FSAM to th… |
| LI27.19-P-080869 | Service bulletin | Aug 29, 2026 | Complaint Temporary no start condition with check engine light and multiple warning messages. When performing a quick test, the following fa… |
| LI54.71-P-080349 | Service bulletin | Aug 26, 2026 | Complaint Frequent rear view camera flap actuations and/or noise associated. NOTE: Rear view camera functions are NOT affected and still per… |
| LI54.65-P-080132 | Service bulletin | Aug 12, 2026 | Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist… |
| LI46.10-P-078012 | Service bulletin | Jul 17, 2026 | Complaint Hand detection system – malfunction / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist no… |
| LI00.20-P-080703 | Service bulletin | Jun 12, 2026 | Complaint Service code B1 displayed in the customer menu does not match the workshop code displayed in the workshop menu, e.g., 505 or 550A… |
| LI82.85-P-080507 | Service bulletin | May 26, 2026 | Complaint After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the message "SOS - service 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 NCU - 2024090001 a recall?
No. A service campaign 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 NCU - 2024090001 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does NCU - 2024090001 cover?
The manufacturer filed it against 1 model year: 2024 Mercedes-Benz GLB-Class. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.