3 Pin Auxiliary Battery Compatible With Mercedes-Benz

Part Number Details

Current Part Number:
A2059053414 (also listed as 2059053414, 205-905-34-14, A 205 905 34 14, MA2059053414)

Superseded Part Numbers:
A2054400073 (2054400073, 205-440-00-73)
A2059052809 (2059052809, 205-905-28-09)

OEM Quality and Fit
Designed as an OEM-recommended replacement to meet Mercedes-Benz factory specifications.
Ensures compatibility with the original factory-installed components.

Functionality
Integral to the Eco Stop/Start system.
Recharged by the vehicle's regenerative braking system, optimizing energy efficiency.

Location
Installed in the passenger-side footwell, beneath carpeting and a protective layer.
Replacement Steps:
Remove protective covers.
Shift the carpet slightly backward.
Locate the auxiliary battery voltage converter under the second protective layer.

Symptoms of Failure
Common signs of a failing voltage converter include:
Onboard error messages such as:
"Auxiliary Battery Malfunction."
"Stop vehicle, shift to P, leave engine running."
Diagnostic Note:
Replacing the voltage converter typically resolves these issues, making additional dealer diagnostics unnecessary.

Updated Part Information
Newest Part Number: MA2059053414

This part number supersedes the following older part numbers:
A2054400073
A2059052809

Installation Notes
No coding required for the new voltage converter module after installation.

Compatability:

2017 Mercedes-Benz Models
C300 4Matic Coupe (2-Door)
Engine: 2.0L 1991CC I4 GAS DOHC Turbocharged
C300 4Matic Sedan (4-Door)
Engine: 2.0L 1991CC I4 GAS DOHC Turbocharged
C300 Base Convertible (2-Door)
Engine: 2.0L 1991CC I4 GAS DOHC Turbocharged
C300 Base Coupe (2-Door)
Engine: 2.0L 1991CC I4 GAS DOHC Turbocharged
C300 Base Sedan (4-Door)
Engine: 2.0L 1991CC I4 GAS DOHC Turbocharged
C350e Base Sedan (4-Door)
Engine: 2.0L 1991CC I4 Plug-In Hybrid EV-GAS (PHEV) DOHC Turbocharged

2016 Mercedes-Benz Models
C63 AMG Base Sedan (4-Door)
Engine: 4.0L 3982CC V8 GAS DOHC Turbocharged
C300 4Matic Sedan (4-Door)
Engine: 2.0L 1991CC I4 GAS DOHC Turbocharged
C300 Base Sedan (4-Door)
Engine: 2.0L 1991CC I4 GAS DOHC Turbocharged
C350e Base Sedan (4-Door)
Engine: 2.0L 1991CC I4 Plug-In Hybrid EV-GAS (PHEV) DOHC Turbocharged
C450 AMG 4Matic Sedan (4-Door)
Engine: 3.0L 2996CC V6 GAS DOHC Turbocharged

2015 Mercedes-Benz Models
C63 AMG Base Coupe (2-Door)
Engine: 6.3L 6208CC V8 GAS DOHC Naturally Aspirated
C63 AMG Base Sedan (4-Door)
Engine: 6.3L 6208CC V8 GAS DOHC Naturally Aspirated
C63 AMG Edition 507 Coupe (2-Door)
Engine: 6.3L 6208CC V8 GAS DOHC Naturally Aspirated
C300 4Matic Sedan (4-Door)
Engine: 2.0L 1991CC I4 GAS DOHC Turbocharged
C300 Base Sedan (4-Door)
Engine: 2.0L 1991CC I4 GAS DOHC Turbocharged
C400 4Matic Sedan (4-Door)
Engine: 3.0L 2996CC V6 GAS DOHC Turbocharged

What's in the box
1 x Voltage Converter Battery