Mercedes-Benz bulletin LI40.15-P-073336
What it saysComplaint Front right tire pressure sensor sporadically or permanently not detected. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Mar 18, 2025, received Mar 21, 2025, about the wheels. It names 20 model years (2019–2025). 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.
Get the next Mercedes-Benz bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationComplaint Front right tire pressure sensor sporadically or permanently not detected. Applicable fault codes on front right tire pressure sensor, see table "Control unit/fault code". Cause Coaxial cable from instrument cluster to instrument cluster control unit (under driver's seat) damaged. Remedy Check coaxial cable from display cluster for head unit/instrument cluster (A26/17 or A40/16 - depending on equipment variant) to head unit/display cluster control unit (N133/1 or N166). If the plug contact of the coaxial cable or the connector housing connection is faulty, replace coaxial cable (see XPI).
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI40.15-P-073336 | Service bulletin | Mar 18, 2025 | 11015836 | PDF, 359 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.
Email me new Mercedes-Benz bulletins for one of these models
A weekly email, sent only in a week when Mercedes-Benz files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 20 model years this bulletin names have filed 311 complaints with NHTSA since 2015. 67 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.
During regular use my 2023, Mercedes Cla 250, had a fault in the instrument display in which the display shut off completely. Only the media display remained on, however the media display is completely useless in this scenario, only the instrument display can show the speed in which the vehicle is traveling and the Rpm range in which the…
2023 Mercedes-Benz CLA-Class · Electrical System · filed with NHTSA Oct 3, 2025 · ODI 11691317
this car really has a lot of issues and honestly if I didn’t know what to do last night and didn’t know about cars, it could have seriously cost me my life but luckily I was able to move out the way of a truck that was coming fast behind me while I was at a traffic light and when the light turned green the car would not start back up…
2022 Mercedes-Benz GLB-Class · Electrical System · filed with NHTSA Aug 10, 2024 · ODI 11607732
My back up camera badge located at the trunk has been permanently stuck open for a few months now when I put car in reverse the screen shows my camera for 2 seconds then disappears and goes back to my Home Screen I brought to the dealer and they told me I need a new battery I replaced my battery paid almost 400 dollars and it still…
2020 Mercedes-Benz CLA-Class · Electrical System · filed with NHTSA Sep 12, 2025 · ODI 11686937
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 wheels
Source: same model, same component group2 other manufacturer communications filed against these Mercedes-Benz models under the same component group (wheels), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI40.10-P-061032 | Service bulletin | May 15, 2026 | Complaint Noises at the front axle when cornering or maneuvering (video files attached) Note: Save video files locally and play them with Wi… |
| NCU-2023080001 | Service bulletin | Aug 10, 2023 | Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2023 CLA-Class (118 platform) vehic… |
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 LI40.15-P-073336 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 LI40.15-P-073336 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 LI40.15-P-073336 cover?
The manufacturer filed it against 20 model years: 2022 Mercedes-Benz A-Class, 2021 Mercedes-Benz A-Class, 2020 Mercedes-Benz A-Class, 2019 Mercedes-Benz A-Class, 2024 Mercedes-Benz CLA-Class, 2023 Mercedes-Benz CLA-Class and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.