Mercedes-Benz 6-Pin Wire Harness Connector – OEM 929149-1 / A0375453728

The OEM 929149-1 / A0375453728 is a 6-pin female connector used in Mercedes-Benz engine and body harnesses. Cross-referencing both TE Connectivity (929149-1) and Mercedes-Benz OEM (A0375453728) part numbers, this connector is used in sensor, actuator, and module wiring circuits on C-Class, E-Class, and S-Class platforms. Available bare or with 15cm pre-wired leads.

Key Specifications

Why Mercedes Harness Connectors Fail

Mercedes-Benz harness connectors in engine and body applications are exposed to heat, vibration, and moisture. Terminal corrosion or housing damage causes intermittent sensor faults, actuator circuit errors, or module communication failures. Symptoms include warning lights, fault codes, and intermittent electrical gremlins. Replacing the connector restores clean circuit continuity.

Variant Guide

• Female – Bare 6-pin housing with terminals
• Female 15CM – Pre-wired with 15cm leads for direct splice-in installation

Installation Steps

1. Disconnect the vehicle battery
2. Locate the 929149-1 / A0375453728 connector in the engine or body harness
3. Release the locking tab and unplug the original connector
4. Transfer terminals to the new housing or splice in the pre-wired variant
5. Reconnect and use XENTRY/DAS to clear fault codes and verify circuit function

Frequently Asked Questions

Q: What Mercedes-Benz models use OEM A0375453728 / 929149-1?
A: This connector is used on Mercedes-Benz C-Class (W203/W204/W205), E-Class (W211/W212/W213), and S-Class (W220/W221/W222) engine and body harnesses. Cross-reference your vehicle’s wiring diagram to confirm fitment.

Q: What fault codes indicate a failed harness connector?
A: Fault codes vary by circuit. Common symptoms include sensor circuit faults (P-codes), actuator errors, and U-codes for module communication failures on Mercedes XENTRY/DAS diagnostic systems.

Q: Are terminals included?
A: Yes, terminals are included with all variants.

Compatible Applications

• Mercedes-Benz C-Class W203/W204/W205 – Engine/body harness
• Mercedes-Benz E-Class W211/W212/W213 – Sensor/actuator connector
• Mercedes-Benz S-Class W220/W221/W222 – Module wiring circuit