Simple Checks (Do these first!):
* Fuses: Check the fuse box (usually under the hood or dashboard) for blown fuses related to the wipers. Your owner's manual will show you the fuse diagram.
* Wiper Switch: Make sure the switch itself isn't faulty. Try wiggling it gently while trying to activate the wipers. A faulty switch is a common cause.
* Low Washer Fluid: While seemingly unrelated, some wiper systems won't work if the washer fluid reservoir is empty, as a low-fluid sensor might be preventing operation as a safety measure.
* Wiper Arms/Blades: Check to see if the wiper arms are stuck or if the blades are severely worn. Frozen wipers are a possibility in cold weather. Try manually moving the wiper arms to see if they're free. Replace worn blades.
More Involved Issues:
* Wiper Motor: The motor itself could be burned out or failing. This often requires replacement.
* Wiper Motor Linkage: The linkage that connects the motor to the wiper arms can become worn, broken, or disconnected. This requires inspection and potential repair or replacement.
* Wiring: A break or short in the wiring harness leading to the motor or switch could interrupt the electrical signal. This is often difficult to troubleshoot and may require professional help.
* Wiper Control Module (if equipped): Some vehicles have a separate control module for the wipers. A faulty module would need to be replaced. This is less common but possible.
* Ground Connection: A poor ground connection can prevent the circuit from completing, thus stopping the wipers. Inspect the ground wires to the motor and switch.
* Intermittent Switch Problem: If only the intermittent setting is not working, this points to a problem within the wiper switch itself.
Troubleshooting Steps:
1. Start with the simplest checks: Fuses, switch, fluid level, and wiper arms/blades.
2. Listen carefully: If you hear a clicking sound when you turn on the wipers, it might indicate a problem with the motor or a blown fuse.
3. Visual inspection: Look for any obvious damage to the wiring, linkage, or motor.
4. Use a multimeter: If you're comfortable with electrical testing, a multimeter can help you check for power at the motor and switch.
If you're not comfortable performing these checks yourself, it's best to take your Buick Century to a qualified mechanic for diagnosis and repair. They have the tools and expertise to pinpoint the exact problem and fix it efficiently.
