Sprwinautummer Voltage Converter Module A2059053414 - 12V Direct-Fit, 3‑Pin Plug for Mercedes-Benz C/E/S/GLE/GLS

Sprwinautummer auxiliary battery voltage converter module (part A2059053414) replaces the factory unit to restore proper 12V auxiliary battery charging and electrical control in compatible Mercedes-Benz models.

This direct-fit replacement module is designed for Mercedes-Benz C-, E-, S-, GLE- and GLS-class vehicles that use the A2059053414/A2059052809 family of parts. It supplies the vehicle's auxiliary battery system with regulated 12V conversion and connects via a three-pin connector — a compact, plug-and-play unit intended to match OEM specs. Before purchase, confirm fitment by providing your VIN or chassis number so you get the correct revision for your model year and equipment.

How will this module affect my vehicle’s electrical system?

Installing the voltage converter restores regulated 12V supply to the auxiliary battery circuit and associated control modules. That helps eliminate instrument-cluster warnings tied to auxiliary battery faults and supports systems that rely on backup voltage during engine-off states.

• Replaces factory part numbers A2059053414, A2059052809, A2054400073 and equivalents.
• Restores proper charging behavior for auxiliary battery subsystems.
• Three-pin connector and 12V rating match OEM specifications for plug-and-play fit.

What are the key installation and diagnostic steps?

The module does not require pairing; installation follows a straightforward electrical procedure and a diagnostic clear. After mounting and reconnecting the negative battery terminal, use a diagnostic scanner to clear any stored fault codes and perform ignition cycles or a short road test to verify the repair.

• Connect the module plug and secure it physically to the mounting point.
• Reconnect the vehicle's negative battery terminal and start ignition.
• Clear trouble codes with a diagnostic tool and confirm warnings are gone after test drive.

What troubleshooting tips should I check if the warning persists?

If an “Auxiliary Battery Failure” message remains after replacement, common culprits include an un-cleared fault record, blown fuses, or a poor harness connection — not usually the absence of module pairing. Inspect nearby fuses and wiring before assuming the new module is defective.

• Check fuse #448 (10A) near the trunk signal module; a blown fuse can cause module issues.
• Verify all harness plugs and ground connections for tightness and corrosion.
• Ensure main battery voltage is adequate; low main battery can affect auxiliary charging.

Which Mercedes-Benz models and part numbers are covered?

This replacement suits many W205 C-Class variants and selected GLE, GLS, S-Class, E-Class and CLS models across mid-2010s to mid-2020s production years. It covers multiple OEM references so you can match the part to your vehicle’s existing module label.

• Fits Mercedes C-Class W205 (C160, C180, C200, C220, C250, C300, C350 e, C400, C450, AMG C43) — 2013–2021 ranges.
• Compatible with GLE (V167) 2018–2023, GLS (X167) 2019–2026, S-Class W222/X222 and selected CLS/E-Class models.
• Cross-references include A2059053414, A2059052809, A2054400073 and numeric equivalents (2059053414, 2059052809).

Who is this module for? If your Mercedes-Benz shows auxiliary battery or related electrical warnings, or if you are replacing a blackened or scorched converter, this Sprwinautummer replacement is intended for technicians, independent shops, and DIY owners comfortable with basic vehicle electrical work. Provide your VIN for fit confirmation, follow the listed installation and diagnostic steps, and check fuses and connectors if problems persist. The package includes one auxiliary battery voltage converter module and is built to match OEM form, fit, and function for supported vehicles.