Mercedes-Benz bulletin LI54.71-P-077938
What it saysComplaint The following event codes are logged in control unit IDC213 - N62/4 (Intelligent Drive control unit): U0401FC and U0401FD. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Jun 12, 2024, received Jul 4, 2024, about the visibility/wiper. It names 10 model years (2020–2024). 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 communicationComplaint The following event codes are logged in control unit IDC213 - N62/4 (Intelligent Drive control unit): U0401FC and U0401FD. Cause Under analysis. Remedy Neither of the two event codes is relevant for the functioning of control unit IDC213 - N62/4 (Intelligent Drive control unit) and can be ignored.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI54.71-P-077938 | Service bulletin | Jun 12, 2024 | 11003211 | PDF, 35 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 10 model years this bulletin names have filed 484 complaints with NHTSA since 2015. 12 of them name Visibility/Wiper — 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 contact owns a 2022 Mercedes-Benz GLS450. The contact stated that while driving at an undisclosed speed, there was an abnormally loud sound coming from the roof of the vehicle. The vehicle was pulled over to the shoulder lane and the contact discovered that the sunroof glass had shattered. No warning lights were illuminated.
2022 Mercedes-Benz GLS-Class · Visibility/Wiper · filed with NHTSA Apr 16, 2026
The contact owns a 2021 Mercedes-Benz GLE350. The contact stated that while the vehicle was parked, there was condensation leaking from a hole near the trunk release button onto the pedal and the floor of the front passenger’s side of the vehicle. The vehicle was not diagnosed or repaired.
2021 Mercedes-Benz GLE-Class · Visibility/Wiper · filed with NHTSA Jul 2, 2025
Make & Model: 2024 Mercedes-Benz GLE350 Complaint Details: My driver side and passenger side , both sun visor’s factory plastic pivot hinge snapped apart under regular operation.
2024 Mercedes-Benz GLE-Class · Visibility/Wiper · filed with NHTSA Jul 3, 2026
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 visibility/wiper
Source: same model, same component group10 other manufacturer communications filed against these Mercedes-Benz models under the same component group (visibility/wiper), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI83.30-P-077763 | Service bulletin | Sep 2, 2026 | Complaint Customer concern of Air Conditioning not cooling. *NOTE ‑ Use of tracer DYE for leak checks is not approved. Only approved leak ch… |
| LI83.55-P-080937 | Service bulletin | Sep 1, 2026 | Cause Internal failure of the scroll wheel within the AC compressor. Remedy Check the compressor's index and part number Figure 1 against Ta… |
| LI82.30-P-059239 | Service bulletin | May 19, 2026 | Complaint There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper blades squeaking, chatteri… |
| LI82.30-P-078932 | Service bulletin | May 15, 2026 | Complaint Approx. A 5–10 cm wide unwiped strip remains in the area of the wiper blade attachment during the downward movement of the wiper o… |
| LI83.30-P-079850 | Service bulletin | Jan 16, 2026 | Complaint Customer states the AC either does not cool/has poor performance or heat is insufficient. Cause Many possible root causes Remedy *… |
| LI83.30-P-079081 | Service bulletin | Apr 21, 2025 | Complaint Random heating of air conditioning system. Cause Temperature sensor in overhead control panel (OCP) delivering incorrect values: T… |
| LI72.40-P-078535 | Service bulletin | Nov 1, 2024 | Complaint Automatic window raising function of side window inoperative. Cause Denormalization of the window lifter system. Remedy Update the… |
| 2024090008 | Service campaign | Sep 17, 2024 | 1. Replace left door window lifter. For basic data, see AR67.39-P-0013WEC. 2. Assemble in reverse order. |
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 LI54.71-P-077938 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 LI54.71-P-077938 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 LI54.71-P-077938 cover?
The manufacturer filed it against 10 model years: 2024 Mercedes-Benz GLE-Class, 2023 Mercedes-Benz GLE-Class, 2022 Mercedes-Benz GLE-Class, 2021 Mercedes-Benz GLE-Class, 2020 Mercedes-Benz GLE-Class, 2024 Mercedes-Benz GLS-Class and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.