Universal Air SW11478C HVAC Blower Motor Resistor

Reliable HVAC Blower Motor Resistor for Mercedes-Benz Models

The Universal Air Blower Resistor SW11478C is designed to restore proper blower motor function in select Mercedes-Benz vehicles. This HVAC blower motor resistor ensures consistent airflow control for models including the C36 AMG, C220, and C280.

• Compatible with Mercedes-Benz C36 AMG, C220, and C280
• Part number SW11478C for precise identification
• Designed to regulate blower motor speeds effectively
• Direct replacement for HVAC blower motor resistor failures
• Manufactured by Universal Air for HVAC system components

About the Universal Air Blower Resistor Product Line

The Blower Resistor line from Universal Air focuses on components that control the speed of HVAC blower motors. This product line is engineered to provide reliable electrical resistance, enabling multiple fan speed settings in vehicle climate control systems. The SW11478C is part of this line, offering a direct fit solution for specific Mercedes-Benz models to maintain optimal HVAC performance.

Product Details and Functionality

The SW11478C blower motor resistor is an essential component in the HVAC system of Mercedes-Benz C36 AMG, C220, and C280 vehicles. It regulates the electrical current to the blower motor, allowing the fan to operate at different speeds. When this resistor fails, the blower motor may only work on one speed or not at all, affecting cabin comfort. This replacement part restores proper function and ensures consistent airflow control.

Common Issues Resolved by This Blower Motor Resistor

• Blower motor stuck on a single speed setting
• Intermittent or no airflow from HVAC vents
• HVAC blower motor not responding to speed controls
• Overheating or electrical resistance failure in blower circuit
• Reduced climate control efficiency in Mercedes-Benz C36 AMG, C220, and C280

Installation Notes and Tips

Installation of the SW11478C blower motor resistor requires access to the HVAC blower motor housing, typically located under the dashboard or behind the glove compartment. Disconnect the vehicle battery before beginning to avoid electrical shorts. Remove the faulty resistor carefully, noting the connector and mounting points, then install the new resistor ensuring a secure fit and proper electrical connection. Testing the blower motor speeds after installation is recommended to confirm correct operation.

Quality Assurance and Warranty Information

Universal Air manufactures the SW11478C blower motor resistor to meet OEM specifications for fit and function. While specific warranty details are not provided here, Universal Air products generally come with a limited warranty against defects in materials and workmanship. Proper installation and use in compatible Mercedes-Benz models such as the C36 AMG, C220, and C280 help ensure reliable HVAC system performance.