Mercedes-Benz bulletin CL - 240401
What it saysIn our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA (MBUSA) is extending the coverage for the Fuel System Control… NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Apr 30, 2024, received May 1, 2024, about the electrical system. It names 17 model years (2019–2021). 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 communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA (MBUSA) is extending the coverage for the Fuel System Control Module (FSCM) software on your vehicle from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 1 S year: / 150,000 mile: (whichever occurs: first), and applies to the vehicle regardless of ownership. Why the warranty extension? On certain Model Year 2019 - 2021 A/CLA/ GLA/GLB/ GLE and GLS-Class vehicles, the FSCM software for the fuel pressure sensor and temperature plausibility checks may not meet specifications. As a result, the check engine Malfunction Indicator Lamp ('MIL') might illuminate. Any repair: under this warranty extension must be performed by an authorized Mercedes-Benz dealership. If your preferred authorized Mercedes-Benz dealership performs a diagnosis and confirms that your vehicle has the issue, the repair will be performed at no cost to you. This extended warranty does not apply to any other components or conditions beyond the ones mentioned above, and standard warranty terms apply, including the exclusions with respect to extra expenses, as identified in the Service and Warranty Information booklet. We hope you are enjoying your Mercedes-Benz vehicle and we apologize for any inconvenience this may have caused.
One of the 357 warranty extensions and special-coverage programs on file — every make, with the term each runs to.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| CL - 240401 | Service bulletin | Apr 30, 2024 | 10253708 | PDF, 356 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.
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What owners reported
Source: NHTSA complaint databaseOwners of the 17 model years this bulletin names have filed 643 complaints with NHTSA since 2015. 164 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.
On the 2020 Mercedes-Benz GLE-Class, the 13 owners who gave an odometer reading for Electrical System reported it at a median of 6,615 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
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
While driving my lease vehicle on two separate days, it completely shut down while in motion with no prior warning. The first incident occurred while crossing a MAX train intersection in downtown Portland. The engine stopped mid intersection, emitted a strong mechanical odor, ticking noises began, and dashboard alerts appeared.
2021 Mercedes-Benz A-Class · Electrical System · filed with NHTSA May 10, 2025
My turn signals are not working and warnings are showing up on my dashboard. My pillars are both wet on the drivers side and passenger side. My speed odometer and tachodometer are not working. The dash board iis showing the brake and high beams are on but they aren't on. I have fog on the front window when I get in the car.
2019 Mercedes-Benz GLA-Class · Electrical System · filed with NHTSA Oct 1, 2025
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 electrical system
Source: same model, same component group112 other manufacturer communications filed against these Mercedes-Benz models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI54.21-P-080326 | Service bulletin | Sep 9, 2026 | Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167, 465: SW has been released. Update the FSAM to th… |
| LI54.30-P-080709 | Service bulletin | Sep 5, 2026 | Complaint Display message in the instrument cluster for "Active Brake Assist Inoperative" or "DISTRONIC inoperative". AND Fault code C1100FC… |
| LI82.60-P-079747 | Service bulletin | Sep 4, 2026 | Complaint The Apple Music app is no longer available in the head unit apps menu after updating the software of the… |
| LI54.71-P-080956 | Service bulletin | Sep 4, 2026 | Complaint 174 with MB. OS 2.1.1 ‑ Driver Assistance System Limited in Instrument Cluster and Does Not Self‑Extinguish. When vehicle is shut… |
| LI27.19-P-080869 | Service bulletin | Aug 29, 2026 | Complaint Temporary no start condition with check engine light and multiple warning messages. When performing a quick test, the following fa… |
| LI54.71-P-080349 | 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-079104 | Service bulletin | Aug 22, 2026 | Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the foll… |
| LI82.85-P-079088 | Service bulletin | Aug 14, 2026 | Complaint The following most common complaints may be observed: • Brief connectivity interruptions when using Apple CarPlay over Wi-Fi • Aud… |
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 CL - 240401 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 CL - 240401 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.
Which vehicles does CL - 240401 cover?
The manufacturer filed it against 17 model years: 2021 Mercedes-Benz A-Class, 2020 Mercedes-Benz A-Class, 2019 Mercedes-Benz A-Class, 2021 Mercedes-Benz CLA-Class, 2020 Mercedes-Benz CLA-Class, 2019 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.