Mercedes-Benz bulletin LI46.35-P-077076
What it saysControl unit N68 - electric power steering Fault P063544 - The electric power steering has a malfunction. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Dec 4, 2023, received Jan 3, 2024, about the steering. It names 25 model years (2021–2024). 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 communicationControl unit N68 - electric power steering Fault P063544 - The electric power steering has a malfunction. There is a fault in the data memory. with fault freeze frame data "Mon_ID 320" in the "stored" status stored in the fault memory of control unit N68. No functional restrictions of the electric power steering or warning messages are visible. Faults occur in the event of a software update or when initializing the control unit for the electric power steering N68. The fault code can be ignored and the fault memory of the control unit for the electric power steering N68 can be deleted. It is not necessary to replace the electric power steering.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI46.35-P-077076 | Service bulletin | Dec 4, 2023 | 10248157 | PDF, 38 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: 2022 Mercedes-Benz AMG C63 S; 2024 Mercedes-Benz AMG GT53E; 2022 Mercedes-Benz AMG SL43; 2024 Mercedes-Benz AMG SL53E; 2024 Mercedes-Benz AMG SL63 S E.
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 20 model years this bulletin names have filed 471 complaints with NHTSA since 2015. 3 of them name Steering — 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.
While driving, the vehicle’s lane keeping system applied an unintended and aggressive steering input during a lane change. I was merging left when the system suddenly forced the steering sharply to the right without driver command.
2024 Mercedes-Benz EQS · Steering · filed with NHTSA Nov 18, 2025 · ODI 11700001
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 steering
Source: same model, same component group16 other manufacturer communications filed against these Mercedes-Benz models under the same component group (steering), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI46.10-P-080896 | Service bulletin | Sep 26, 2026 | Complaint Slight creaking noises when steering. Cause Noises may come from one or more sleeves of the horn contact plate. Remedy Remove the… |
| LI46.10-P-077314 | Service bulletin | Sep 25, 2026 | Complaint Noises in the steering column area when steering. See example file in the attachments area: "MRSM‑Schleifgeräusch_SCCMGrindingNois… |
| LI46.35-P-067339 | Service bulletin | Aug 28, 2026 | Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time. OR Rattling, hummi… |
| LI46.80-P-080662 | Service bulletin | Jun 1, 2026 | Complaint Rattling/knocking noise from the rear axle steering is audible when driving on rough terrain or cobblestones. Large play in the re… |
| LI46.15-P-070510 | Service bulletin | May 22, 2026 | Complaint Noises from the area of the steering column. - Creaking - Squeaking - Chattering - Humming - Grinding Cause At present, there are… |
| LI46.80-P-079280 | Service bulletin | Mar 27, 2026 | Complaint Rattling/knocking noise from the rear axle steering is audible when driving on rough terrain or cobblestones. Excessive radial pla… |
| LI82.90-P-080159 | Service bulletin | Feb 28, 2026 | Complaint Stored DTC C220564 - "There is an internal fault in the steering angle sensor. There is an implausible signal." In the quick test… |
| LI46.15-P-076223 | Service bulletin | Aug 14, 2025 | Complaint: Creaking or humming noise during adjustment of the electric steering column, see video. Cause: The noises occur due to insufficie… |
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 LI46.35-P-077076 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 LI46.35-P-077076 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 LI46.35-P-077076 cover?
The manufacturer filed it against 25 model years: 2024 Mercedes-Benz AMG GT, 2024 Mercedes-Benz C-Class, 2023 Mercedes-Benz C-Class, 2022 Mercedes-Benz C-Class, 2024 Mercedes-Benz CLE-Class, 2024 Mercedes-Benz E-Class and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.