Mercedes-Benz bulletin LI54.71-P-080315
What it saysComplaint Brief (a few seconds), self-healing "driver assistance systems unavailable" messages are expected and normal due to system limitations and environmental effects. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Feb 26, 2026, received Feb 28, 2026, about the forward collision avoidance. It names 1 model year (2026). 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 Brief (a few seconds), self-healing "driver assistance systems unavailable" messages are expected and normal due to system limitations and environmental effects. No case is necessary for these. Please refer to the Owner's Manual for driver assistance system limitations and environmental effects. If the vehicle is on MB. OS 1.3.0 or later and the "driver assistance systems unavailable" message displays in the instrument cluster and either: • DOES NOT clear within a few seconds OR • Appears on every key cycle and DOES NOT clear NOTE: To find the MB. OS version number: 1. Navigate to VeDoc. 2. Go to "Control Units" tab. 3. Find the header bar labeled "Vehicle Information for Control Units". 4. Locate "MB. OS car package release customer version". Cause Under Determination. Remedy Open a TIPS case to the Body/Chassis/Entertainment inbox based on the symptom below: If vehicle is still actively showing the white driver assist message: Do not shut off the vehicle and gather the following: • Quicktest • N62/5 Driver Assistance Control Unit Log with all sensors included. • Other control unit logs that are referenced in N62/5 DTC's. If the vehicle is not actively showing the white driver assist message: • Quicktest • N62/5 Driver Assistance Control Unit Log with all sensors included.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI54.71-P-080315 | Service bulletin | Feb 26, 2026 | 11029085 | PDF, 128 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.
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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 1 model year this bulletin names have filed 1 complaint with NHTSA since 2015. 3 of them name Forward Collision Avoidance — 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 at 50mph, the vehicle came to a full stop in 2 seconds by auto breaking (to avoid collision) when there was no object or vehicle in front of the car. I almost got rear-ended as stopping from 50mph to 0 mph on a highway was extremely dangerous but luckily the car behind me was able to use the lane to my right to avoid the…
2026 Mercedes-Benz CLA-Class · Forward Collision Avoidance · filed with NHTSA Aug 20, 2026 · ODI 11758250
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.
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 LI54.71-P-080315 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 LI54.71-P-080315 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 LI54.71-P-080315 cover?
The manufacturer filed it against 1 model year: 2026 Mercedes-Benz CLA-Class. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.