Mercedes-Benz AMG C43 2022–2025 — technical service bulletin
Bulletin LI82.60-P-079138 · NHTSA communication 11018032 · issued May 1, 2025
Technical service bulletin
communication type
Electrical System
component
2022–2025
model years
26
vehicle entries
Official summary
Complaint In vehicles with the MBUX multimedia system Gen20x.i2 without premium sound system and external amplifier, the sound does not meet the customer's expectations. Changing the sound settings, for example for the bass, does not provide the desired effect. Cause Sound parameter software in the A26/17 - MBUX multimedia system + Instrument cluster (Head unit) control unit Remedy For vehicles with standard sound and Midline sound system (code 853), new sound parameters are available. V/X 254: A 254 903 94 03 C 254: A 254 903 97 03 V/W 206: A 206 903 20 04 S 206: A 206 903 21 04 A/C 236: A 23
Vehicles covered
- 2023 Mercedes-Benz AMG C43
- 2024 Mercedes-Benz AMG C43
- 2023 Mercedes-Benz AMG C43 4MATIC
- 2024 Mercedes-Benz AMG C63 S E
- 2024 Mercedes-Benz AMG CLE53
- 2025 Mercedes-Benz AMG E 53 4MATIC+ Wagon
- 2024 Mercedes-Benz AMG GLC43
- 2025 Mercedes-Benz AMG GLC63 S E
- 2025 Mercedes-Benz AMG GLC63 S E 4MATIC+ Coupe
- 2022 Mercedes-Benz C 300
- 2023 Mercedes-Benz C 300
- 2024 Mercedes-Benz C 300
- 2025 Mercedes-Benz C 300
- 2024 Mercedes-Benz Cle 300
- 2024 Mercedes-Benz Cle 450
- 2024 Mercedes-Benz E 350
- 2025 Mercedes-Benz E 350
- 2025 Mercedes-Benz E 350 4MATIC
- 2024 Mercedes-Benz E 450
- 2025 Mercedes-Benz E 450 4MATIC
- 2025 Mercedes-Benz E 450 4MATIC All-Terrain
- 2023 Mercedes-Benz GLC 300
- 2024 Mercedes-Benz GLC 300
- 2025 Mercedes-Benz GLC 300
- 2024 Mercedes-Benz GLC 300 Coupe
- 2025 Mercedes-Benz GLC 350 E 4MATIC
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.