Mercedes-Benz bulletin LI54.70-P-079322
What it saysComplaint Red park ring around vehicle without anything in proximity. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Oct 7, 2025, received Oct 8, 2025, about the back over prevention. It names 6 model years (2024–2025). 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.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationComplaint Red park ring around vehicle without anything in proximity. Consistently reproducible. No DTC in the PARK control unit. Vehicle is a GLC 254 OR 2024 or later 167 GLE/GLS with exterior AMG line (option codes 772 & P31). Cause 254 GLC models or facelifted 167 GLE/GLS models (model year 2024 and on) have a re-designed front AMG bumper. Sensor position 2 and 5, front bumper park ultrasonic sensors ("USS") are occasionally interpreting the AMG bumper overhang as an object in immediate proximity or is detecting as implausible data. When this occurs, the red ring will activate in the head unit. NOTE: Other reasons can also induce the "red ring". Since current park sensor stock is still mixed "Q" levels, it is recommended to verify the concern prior to ordering and replacing. See Remedy section for verification. Remedy Verify concern is rectified via the felt tape method prior to ordering new park sensors. See attachment "Felt Tape Verification" for location of modification. Recommended felt tape part number is A0009838910 and needs to be applied to both left and right side of the vehicle. Fixes Concern: Remove the felt tape and order 2 sensors for the vehicle from the below part numbers that are applicable to the subject vehicle. Please note that if the sensors removed from the vehicle are from when it was built, the aftersales part numbers will be different, please check EPC. Valid part numbers are listed below. Replace only sensor position 2 and 5 (see attachment "Park Sensors to be Replaced"). To get the proper "Q" level sensors: 1. Check parts in current dealer inventory. Recommend to separate stock at dealer level between Q7 and earlier variants. To identify the Q level of the part, see picture "Distance Sensor Q Level". 2. If proper Q level is not found in inventory and parts need to be ordered, please order a few extras to get Q7 level. Parts that are non-Q7 are still valid for other repairs outside of this concern. 3. If dealer does not receive a Q7 sensor in their first order, please open a Star Support Ticket. Part Numbers: • A2239050005 9999 Q07 • A2239054000 9999 Q07 Does NOT Fix Concern: Please perform additional diagnostics or open a TIPS case to the Body, Chassis, Entertainment inbox.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI54.70-P-079322 | Service bulletin | Oct 7, 2025 | 11024178 | PDF, 741 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| A0009838910 | — | — | |
| A2239050005 | — | — | |
| A2239054000 | Does NOT Fix Concern: Please perform additional diagnostics or open a TIPS case to… | — | eBay Motors → |
Read by machine from the document NHTSA serves (4 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.
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 warnings for the 2025 GLC-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 themAlso filed against model years this site has no page for: 2024 Mercedes-Benz Redundant AMG GLC43 4MATIC; 2025 Mercedes-Benz Redundant AMG GLC43 4MATIC.
A 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 4 model years this bulletin names have filed 109 complaints with NHTSA since 2015.
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 back over prevention
Source: same model, same component group2 other manufacturer communications filed against these Mercedes-Benz models under the same component group (back over prevention), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI54.65-P-080529 | 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… |
| LI54.71-P-078778 | Service bulletin | Apr 4, 2025 | Complaint Rear cross traffic activation without obvious cause. Cause Verify customer concern with the assistance of the Operator's Manual: •… |
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 LI54.70-P-079322 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 LI54.70-P-079322 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 LI54.70-P-079322 cover?
The manufacturer filed it against 6 model years: 2025 Mercedes-Benz GLC-Class, 2024 Mercedes-Benz GLC-Class, 2025 Mercedes-Benz GLS-Class, 2024 Mercedes-Benz GLS-Class, 2024 Mercedes-Benz Redundant AMG GLC43 4MATIC, 2025 Mercedes-Benz Redundant AMG GLC43 4MATIC. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.