Mercedes-Benz bulletin LI82.20-P-079313
What it saysComplaint The adaptive rear compartment lighting is sporadically inoperative. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated May 22, 2025, received May 28, 2025, about the exterior lighting. It names 6 model years (2022–2023). 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 adaptive rear compartment lighting is sporadically inoperative. In one or all rear interior lamps, one of the following specified fault codes (DTC) is stored. • E48/3 (Adaptive rear interior lamp, roof, left) / DTC B17D149 - The "Adaptive interior lighting" control unit for the rear left roof has malfunctioned. There is an internal electrical fault. • E48/4 (Adaptive rear interior lamp, roof, center) / DTC B17D349 - The "Adaptive interior lighting" control unit for the rear center roof has malfunctioned. There is an internal electrical fault. • E48/5 (Adaptive rear interior lamp, roof, right) / DTC B17D249 - The "Adaptive interior lighting" control unit for the rear right roof has malfunctioned. There is an internal electrical fault. Cause Software in the control units E48/3-5. Remedy Update the software of control units E48/3-5.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI82.20-P-079313 | Service bulletin | May 22, 2025 | 11018613 | 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 themAlso filed against model years this site has no page for: 2023 Mercedes-Benz AMG S 63 E 4MATIC+; 2023 Mercedes-Benz Redundant EQS 450.
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 171 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 exterior lighting
Source: same model, same component group11 other manufacturer communications filed against these Mercedes-Benz models under the same component group (exterior lighting), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI82.10-P-078301 | Service bulletin | Apr 16, 2026 | Complaint Headlamp, front fog lamp leaky or fogged. Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain cl… |
| LI82.10-P-078307 | Service bulletin | Feb 25, 2026 | Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic condi… |
| LI82.10-P-078896 | Service bulletin | Feb 24, 2026 | Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic condi… |
| LI82.20-P-073522 | Service bulletin | May 22, 2025 | Complaint It remains dark when switching on the rear passenger compartment interior lighting. Cause Coding of component part control unit N1… |
| LI54.30-P-079004 | Service bulletin | Apr 22, 2025 | Complaint The message "Device detected at diagnostics connection See Operator’s Manual" appears sporadically in the multifunction display of… |
| LI82.20-P-079002 | Service bulletin | Mar 10, 2025 | Complaint The luggage compartment lighting switches off and back on erratically if the tailgate is opened with the ignition switched off. Ca… |
| LI82.10-P-078070 | Service bulletin | Jan 24, 2025 | Complaint Digital light pop-up messages (warnings, notes, spotlight and dyn. low beam) appear in the instrument cluster… |
| LI82.10-P-078107 | Service bulletin | Nov 13, 2024 | Complaint • Transfer of selected user-defined scene/ animation (Mercedes-Benz Phone App) from HU to ECU software fails to start. • Charging… |
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 LI82.20-P-079313 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 LI82.20-P-079313 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 LI82.20-P-079313 cover?
The manufacturer filed it against 6 model years: 2023 Mercedes-Benz EQS, 2022 Mercedes-Benz EQS, 2023 Mercedes-Benz S-Class, 2022 Mercedes-Benz S-Class, 2023 Mercedes-Benz AMG S 63 E 4MATIC+, 2023 Mercedes-Benz Redundant EQS 450. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.