Over-the-air update OTA - 20250627
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Over-the-air update |
|---|---|
| NHTSA id | 11019782 |
| Published by NHTSA | 2025-06-27 |
| Manufacturer's number | OTA - 20250627 |
| Manufacturer's date | 2025-06-28 |
| NHTSA component | LANE DEPARTURE: ASSIST; LANE DEPARTURE: WARNING; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; ELECTRICAL SYSTEM |
NHTSA's summary
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has updated driver assistance system SCN coding available for certain subject vehicles. The updated SCN coding improves system stability and enhances the availability of driver assistance features. MBUSA will conduct an OTA service campaign. Remote SCN coding updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Driver assistance, Electrical system, Adaptive cruise control, Lane departure and lane keeping
| MERCEDES-BENZ AMG C43 | 2021 to 2024 |
|---|---|
| MERCEDES-BENZ AMG C43 4MATIC | 2023 |
| MERCEDES-BENZ AMG C63 | 2021 |
| MERCEDES-BENZ AMG C63 S | 2021 to 2023 |
| MERCEDES-BENZ AMG C63 S E | 2023 to 2024 |
| MERCEDES-BENZ AMG CLE53 | 2024 |
| MERCEDES-BENZ AMG CLE63E S | 2024 |
| MERCEDES-BENZ AMG EQE | 2023 to 2024 |
| MERCEDES-BENZ AMG EQE 53 4MATIC | 2023 to 2025 |
| MERCEDES-BENZ AMG EQE SUV 4MATIC | 2024 to 2025 |
| MERCEDES-BENZ AMG EQE SUV 53 4MATIC | 2024 to 2025 |
| MERCEDES-BENZ AMG EQS | 2022 to 2024 |
| MERCEDES-BENZ AMG EQS 53 | 2022 to 2023 |
| MERCEDES-BENZ AMG EQS 53 4MATIC | 2023 to 2024 |
| MERCEDES-BENZ AMG GLC43 | 2021 to 2024 |
| MERCEDES-BENZ AMG GLC63 | 2021 to 2022 |
| MERCEDES-BENZ AMG GLC63 S E | 2024 |
| MERCEDES-BENZ AMG GT43 | 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| MERCEDES-BENZ AMG GT55 | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| MERCEDES-BENZ AMG GT63 | 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| MERCEDES-BENZ AMG GT63 S | 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| MERCEDES-BENZ AMG GT63S | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| MERCEDES-BENZ AMG S 63 E 4MATIC+ | 2023 to 2025 |
| MERCEDES-BENZ AMG S63 | 2021 |
| MERCEDES-BENZ C 300 | 2021 to 2025 |
| MERCEDES-BENZ CLE 300 | 2023 |
| MERCEDES-BENZ CLE 300 | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| MERCEDES-BENZ CLE 450 | 2023 |
| MERCEDES-BENZ CLE 450 | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| MERCEDES-BENZ E 350 | 2021 to 2025 |
| MERCEDES-BENZ E 350 4MATIC | 2025 |
| MERCEDES-BENZ E 450 | 2021 to 2024 |
| MERCEDES-BENZ E 450 4MATIC | 2025 |
| MERCEDES-BENZ E 450 4MATIC ALL-TERRAIN | 2025 |
| MERCEDES-BENZ EQE 350 4MATIC | 2023 to 2025 |
| MERCEDES-BENZ EQE 350+ | 2023 to 2024 |
| MERCEDES-BENZ EQE 500 | 2023 to 2024 |
| MERCEDES-BENZ EQE 500 4MATIC | 2023 to 2024 |
| MERCEDES-BENZ EQE SUV 350 4MATIC | 2023 to 2025 |
| MERCEDES-BENZ EQE SUV 350+ | 2023 to 2025 |
| MERCEDES-BENZ EQE SUV 500 4MATIC | 2023 to 2025 |
| MERCEDES-BENZ EQS 450 | 2022 |
| MERCEDES-BENZ EQS 450 4MATIC | 2023 to 2024 |
| MERCEDES-BENZ EQS 450+ | 2022 to 2024 |
| MERCEDES-BENZ EQS 580 | 2022 to 2024 |
| MERCEDES-BENZ EQS 580 4MATIC | 2022 to 2023 |
| MERCEDES-BENZ EQS SUV 450 4MATIC | 2023 to 2025 |
| MERCEDES-BENZ EQS SUV 450+ | 2023 to 2025 |
| MERCEDES-BENZ EQS SUV 580 4MATIC | 2023 to 2025 |
| MERCEDES-BENZ GLC 300 | 2021 to 2025 |
| MERCEDES-BENZ GLC 300 4MATIC | 2023 to 2025 |
| MERCEDES-BENZ GLC 300E | 2025 |
| MERCEDES-BENZ GLC 350 E | 2021 |
| MERCEDES-BENZ GLC 350 E 4MATIC | 2025 |
| MERCEDES-BENZ REDUNDANT AMG GLC43 4MATIC | 2024 to 2025 |
| MERCEDES-BENZ S 500 | 2021 |
| MERCEDES-BENZ S 500 | 2023 |
| MERCEDES-BENZ S 500 4MATIC | 2022 to 2024 |
| MERCEDES-BENZ S 580 | 2021 |
| MERCEDES-BENZ S 580 | 2023 |
| MERCEDES-BENZ S 580 4MATIC | 2022 to 2024 |
| MERCEDES-BENZ S 580 E | 2023 |
| MERCEDES-BENZ S 580 E 4MATIC | 2023 to 2025 |
| MERCEDES-BENZ redundant EQE 350 | 2024 |
| MERCEDES-BENZ redundant EQE 350 4MATIC | 2023 |
| MERCEDES-BENZ redundant EQS 450 | 2023 to 2024 |
| MERCEDES-MAYBACH EQS SUV 680 4MATIC | 2024 to 2025 |
| MERCEDES-MAYBACH S 580 | 2021 |
| MERCEDES-MAYBACH S 580 4MATIC | 2022 to 2024 |
| MERCEDES-MAYBACH S 680 | 2023 to 2024 |
| MERCEDES-MAYBACH S 680 4MATIC | 2022 to 2023 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| LI46.10-P-078012 | 2025-08-01. Service bulletin. Complaint Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy In the event of a customer complaint and fault code in IDC control unit: U186B29 in IDC223 or fault code U0429E0, U042941, U042929, U042902, U0429E1 in IDC213 or fault code in HOSWD control unit: B1E7614 Test: Please perform the new SCN coding for HOSWD control unit (N179/1) (available since May 2025). Please flash the IDC (N62/4) software A223 902 75 37 (only applies to HOSWD223). Erase fault memory Remedy: Switch on ignition without touching the steering wheel. If after 10 seconds without touching the steering wheel, one of the two fault messages appears in the IC: Please check contacts and feed lines in the steering wheel by means of visual inspection for damage, crimped connections, loose connections, etc. (example in picture 2 and 3). If there is visible damage -> replace steering wheel electronics or feed lines. If there is no visible damage -> Proceed to replace the steering wheel. If no yellow message appears in the instrument cluster within 10 seconds: Please grab the steering wheel all the way round, including the 6 o'clock chrome molding, with both hands (see picture 1). If the fault is triggered by grabbing the steering wheel rim or pressing on the 6 o'clock clasp, check contacts and feed lines in the steering wheel by means of visual inspection for damage, crimped connections, loose connections, etc. (example in picture 2 and 3). Check ground connections (screw connections and cable to steering wheel rim); if necessary tighten screws/bolts and check for corrosion (Picture 4). If there is visible damage -> replace steering wheel electronics or feed lines. If no fault is visible -> Proceed to replace the steering wheel. In the event of a customer complaint and further fault code in HOSWD: B1E7713: Check ground connections (screw connections and cable to steering wheel rim); if necessary tighten screws/bolts and check for corrosion (Picture 4). B1F1F04: Check hand detection system control unit; if necessary swap with donor vehicle (ensure that the HW part numbers are identical). |
|---|---|
| OTA - 20250725 | 2025-07-29. Over-the-air update. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has updated driver assistance system software available for certain subject vehicles. The updated software improves system stability and enhances the robustness of the driver assistance system. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit. |
| LI46.10-P-078012 | 2025-05-09. Service bulletin. Complaint Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy In the event of a customer complaint and fault code in IDC control unit: U186B29 in IDC223 or fault code U0429E0, U042941, U042929, U042902, U0429E1 in IDC213 or fault code in HOSWD control unit: B1E7614 Test: Please perform the new SCN coding for HOSWD control unit (N179/1) (available since May 2025). Please flash the IDC (N62/4) software A223 902 75 37 (only applies to HOSWD223). Erase fault memory Remedy: Switch on ignition without touching the steering wheel. If after 10 seconds without touching the steering wheel, one of the two fault messages appears in the IC: Please check contacts and feed lines in the steering wheel by means of visual inspection for damage, crimped connections, loose connections, etc. (example in picture 2 and 3). If there is visible damage -> replace steering wheel electronics or feed lines. If there is no visible damage -> Please create TIPS case! If no yellow message appears in the instrument cluster within 10 seconds: Please grab the steering wheel all the way round, including the 6 o'clock chrome molding, with both hands (see picture 1). If the fault is triggered by grabbing the steering wheel rim or pressing on the 6 o'clock clasp, check contacts and feed lines in the steering wheel by means of visual inspection for damage, crimped connections, loose connections, etc. (example in picture 2 and 3). Check ground connections (screw connections and cable to steering wheel rim); if necessary tighten screws/bolts and check for corrosion (Picture 4). If there is visible damage -> replace steering wheel electronics or feed lines. If no fault is visible: Please open a TIPS case! In the event of a customer complaint and further fault code in HOSWD: B1E7713: Check ground connections (screw connections and cable to steering wheel rim); if necessary tighten screws/bolts and check for corrosion (Picture 4). B1F1F04: Check hand detection system control unit; if necessary swap with donor vehicle (ensure that the HW part numbers are identical). |
| LI46.10-P-078012 | 2025-02-07. Service bulletin. Complaint Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy Test Procedure: Perform an initial quick test with freeze frame data. Save the N179 - Hand detection system (HE) and N62/4 - Driver assistance system (SG-FAS) control unit logs. Note the fault frequency of fault codes set. Delete the N179 and N62/4 fault memory. Using both hands, "scan" the steering wheel all the way round, including the chrome molding at 6 o'clock (see Picture 1). Read out fault memory and follow steps below for any faults set. Remedy: Vehicles with control unit N179 - Hand detection system (HE): B1E7614: Check contacts and wiring harness in steering wheel by carrying out a visual check for damage, pinched areas, loose connections, etc. (examples in Figs. 2 and 3); If no damage is noted replace the N135 - Steering wheel electronics (LRE) and reassess. If fault code returns replace the steering wheel. B1E7713: Please check the wires and connections in the steering wheel. Afterwards, please check whether the complaint is caused by over torqued screws on steering wheel trim pieces. To do this, please loosen the screws slightly and reevaluate the situation. (Picture 4). P164456: Perform SCN coding. P1CA000: Perform an initial start-up on the N179 hand detection control unit. Faults in N62/4 - Driver assistance system (SG-FAS) control unit with U186B29, U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the N179 control unit: Scan steering wheel as indicated in the test procedure and check whether the fault is reproducible. If no fault code is stored in the hand detection control unit, the fault codes in the driver assistance systems control unit are precautionary messages. Software for the N62/4 - Driver assistance system (SG-FAS) is now available for Star 3 vehicles only. Fault in IDC223 control unit: U186B29: Delete fault memory and flash the new IDC (N62/4) software A223 902 75 37. If the software update is not available, or the problem persists, create a TIPS case. Fault in IDC213 control unit: U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the HOSWD control unit then scan the steering wheel and check whether the fault is reproducible. If reproducible: Create a TIPS case, adding the note "reproducible". If no fault code is stored in the hand detection control unit, the fault codes in the driver assistance systems control unit are precautionary messages. New coding parameters (SCN) will be available in Q2/2025 for the HOSWD control unit. |
| LI46.10-P-078012 | 2025-01-10. Service bulletin. Complaint Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy Test Procedure: Perform an initial quick test with freeze frame data. Save the N179 - Hand detection system (HE) and N62/4 - Driver assistance system (SG-FAS) control unit logs. Note the fault frequency of fault codes set. Delete the N179 and N62/4 fault memory. Using both hands, "scan" the steering wheel all the way round, including the chrome molding at 6 o'clock (see Picture 1). Read out fault memory and follow steps below for any faults set. Remedy: Vehicles with control unit N179 - Hand detection system (HE): B1E7614: Check contacts and wiring harness in steering wheel by carrying out a visual check for damage, pinched areas, loose connections, etc. (examples in Figs. 2 and 3); If no damage is noted replace the N135 - Steering wheel electronics (LRE) and reassess. If fault code returns replace the steering wheel. B1E7713: Please check the wires and connections in the steering wheel. Afterwards, please check whether the complaint is caused by over torqued screws on steering wheel trim pieces. To do this, please loosen the screws slightly and reevaluate the situation. (Picture 4). P164456: Perform SCN coding. P1CA000: Perform an initial start-up on the N179 hand detection control unit. Faults in N62/4 - Driver assistance system (SG-FAS) control unit with U186B29, U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the N179 control unit: Scan steering wheel as indicated in the test procedure and check whether the fault is reproducible. If no fault code is stored in the hand detection control unit, the fault codes in the driver assistance systems control unit are precautionary messages. Software for the N62/4 - Driver assistance system (SG-FAS) is now available for Star 3 vehicles only. Fault in IDC223 control unit: U186B29: Delete fault memory and flash the new IDC (N62/4) software A223 902 75 37. If the software update is not available, or the problem persists, create a TIPS case. |