Mercedes-Benz bulletin PSL-NCU Return Parts 4/24
What it saysThe part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a manufacturer communication dated Apr 25, 2026, received May 8, 2026, about the visibility/wiper. It names 10 model years (2016–2026). A manufacturer communication 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 communicationThe part numbers listed in the chart below should no longer be installed, and any existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, May 14, 2026. After May 14th, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return. Please include a copy of this NCU as your authorization to return these parts. This procedure will not affect your return allowance. All returned parts will be replaced in accordance with the chart provided below.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PSL-NCU Return Parts 4/24 | Other | Apr 25, 2026 | 11032518 | PDF, 111 KB |
What the document itself lists
The manufacturer titles it “Notice to Return Parts DATE: April 24, 2026”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| A2957201500 | — | — | |
| A2957201600 | — | — | |
| A2957201700 | — | — | |
| A2957301500 | — | — | |
| A2957301600 | — | — | |
| A2957309400 | — | — | |
| A1773305602 | — | — | |
| A1773303503 | — | — | |
| A1672700801 | — | — | |
| A1672704601 | — | — | |
| A2232709000 | — | — | |
| A7252705509 | — | — |
Read by machine from the document NHTSA serves (2 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.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the body for the 2016 E-Class →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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 276 complaints with NHTSA since 2015. 25 of them name Structure, 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 center console display (MBUX) on this 2023 EQS 450 4MATIC fails while the vehicle is in use. There is no warning lamp, chime or message first. Sometimes it flickers on and off; other times it goes fully blank and stays blank, unresponsive to touch. Owner video shows the display working and then completely blank 0.4 seconds later.
2023 Mercedes-Benz EQS · Visibility/Wiper · filed with NHTSA Sep 5, 2026 · ODI 11762332
The contact owns a 2016 Mercedes-Benz E350. The contact stated that there was an oil burning odor present inside and outside of the vehicle. The vehicle was taken to the local dealer who diagnosed that the engine drive belts were faulty, and corrosion was present on the motor mounts. The vehicle was not yet repaired.
2016 Mercedes-Benz E-Class · Structure · filed with NHTSA Nov 12, 2021 · ODI 11440184
The contact owns a 2024 Mercedes-Benz EQE 350+. The contact stated that while her husband was driving at 75 MPH, the panoramic sunroof suddenly shattered without warning, producing a loud booming sound. The contact's husband pulled over and inspected the vehicle before driving back to the residence.
2024 Mercedes-Benz EQE · Visibility/Wiper · filed with NHTSA Jul 6, 2026 · ODI 11748503
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 group12 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 |
|---|---|---|---|
| LI83.55-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… |
| PSL-NCU Return Parts 6/19 | Other | Jun 19, 2026 | Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be ret… |
| LI83.70-P-078292 | Service bulletin | Jun 16, 2026 | Complaint Red warning message in instrument cluster: "Towing not allowed, see Operator's Manual, consult workshop without starting the engin… |
| 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… |
| LI77.21-P-080504 | Service bulletin | May 18, 2026 | Complaint The panoramic sliding sunroof operates in a stepped movement. The panoramic roof becomes denormalized without an apparent reason… |
| LI77.21-P-075806 | Service bulletin | Apr 20, 2026 | Complaint The sliding sunroof glass panel of the panoramic roof reverses during the closing process, either once or multiple times, without… |
| LI83.70-P-080411 | Service bulletin | Apr 13, 2026 | Complaint No heating output is available during electric driving operation. In conventional (combustion engine) driving operation, full heat… |
| 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 *… |
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 PSL-NCU Return Parts 4/24 a recall?
No. A manufacturer communication 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 PSL-NCU Return Parts 4/24 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 PSL-NCU Return Parts 4/24 cover?
The manufacturer filed it against 10 model years: 2016 Mercedes-Benz E-Class, 2026 Mercedes-Benz EQE, 2025 Mercedes-Benz EQE, 2024 Mercedes-Benz EQE, 2023 Mercedes-Benz EQE, 2026 Mercedes-Benz EQS and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.