Dorman 973-242 HVAC Blower Motor Resistor - Front

Reliable HVAC Blower Motor Resistor for Mercedes-Benz Models

The Dorman 973-242 HVAC blower motor resistor is designed to restore proper blower motor function in select Mercedes-Benz vehicles. Engineered with precise specifications, this resistor ensures consistent airflow control for your vehicle's heating and cooling system.

• Compatible with Mercedes-Benz E55 AMG, E63 AMG, E280, E300, E320, E350, E500, E550, ML55 AMG, ML320, ML350, and ML500 models
• Features 2 bolt holes for secure mounting
• Equipped with a single square female connector housing 4 male blade terminals
• Does not include wiring harness or mounting hardware
• Includes blower motor resistor and installation instructions

Technical Details and Specifications

This Dorman HVAC blower motor resistor (part number 973-242) is designed with a square-shaped female connector that contains four male blade terminals, ensuring a reliable electrical connection. The resistor mounts securely using two bolt holes, providing stable installation within the HVAC system. While the product does not include a wiring harness or mounting hardware, it comes with clear instructions to assist with installation. This component is essential for regulating the blower motor speed in your Mercedes-Benz, maintaining optimal climate control performance.

Common Applications and Problem Resolution

This blower motor resistor is compatible with a range of Mercedes-Benz models, including the E-Class and ML-Class variants listed above. It addresses several HVAC system issues such as:

• Inconsistent blower motor speeds or loss of certain fan speed settings
• Blower motor not operating at all or only running on high speed
• Intermittent airflow problems within the vehicle cabin
• Electrical resistance failures causing HVAC system malfunctions

Installation Notes and Tips

• Ensure the vehicle ignition is off and the battery is disconnected before installation
• Locate the blower motor resistor within the HVAC housing, typically near the blower motor assembly
• Remove the old resistor by unscrewing the two mounting bolts and disconnecting the electrical connector
• Install the new Dorman 973-242 resistor by securing it with the two bolts and reconnecting the square female connector
• Verify proper blower motor operation across all speed settings after installation

Quality Assurance and Warranty Information

Dorman manufactures this blower motor resistor to meet or exceed OEM standards for fit, form, and function. The part number 973-242 undergoes rigorous quality control to ensure durability and reliable performance in Mercedes-Benz HVAC systems. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.