Here's a breakdown of the blower motor location and troubleshooting steps:
Location:
* The blower motor is located behind the glove box on the passenger side of the dashboard.
* It's usually mounted to the firewall and connected to a duct system that distributes air throughout the cabin.
Troubleshooting:
1. Check the fuse: The blower motor is usually protected by a fuse. Check the fuse box (typically under the hood or in the passenger compartment) for a blown fuse related to the blower motor.
2. Inspect the blower motor resistor: The resistor controls the different fan speeds. It might be located near the blower motor or within the blower motor housing. Check for any burnt or broken connections.
3. Test the blower motor: If the fuse and resistor are intact, you can test the motor itself. Disconnect the electrical connector leading to the motor. Use a multimeter to check for continuity between the motor terminals. If there's no continuity, the motor might be faulty.
4. Inspect the wiring: Inspect the wiring harness connecting the blower motor to the resistor and fuse box for any loose connections, broken wires, or corrosion.
5. Check the blower motor control switch: This switch on the dashboard controls the fan speeds. It can be faulty and prevent the motor from working. Try switching between different fan settings to see if it makes any difference.
6. Consider professional assistance: If you're not comfortable with electrical work, it's best to consult a qualified mechanic. They have the experience and tools to diagnose and repair the issue effectively.
Additional Tips:
* Start with the simplest checks first: Start by inspecting the fuse and checking for any obvious wiring problems before diving into more complex testing.
* Use a multimeter: A multimeter is an essential tool for troubleshooting electrical components.
* Be careful with electrical systems: Always disconnect the battery before working on any electrical components in your vehicle.
* Refer to the owner's manual: The owner's manual can provide helpful information about your specific vehicle's blower motor system.
Remember: These steps are a general guide. Specific locations and components may vary depending on the exact year and model of your 1985 Mercedes 380 SE. Consulting a repair manual or a qualified mechanic is recommended for detailed information and accurate diagnostics.
