Overview
The back glass wiper motor, also known as the rear window wiper motor or rear windshield wiper motor, is a crucial component in vehicles equipped with a rear wiper system. It powers the movement of the rear wiper blade across the back window, ensuring clear visibility in adverse weather conditions like rain, snow, or dust.
Common Symptoms of Failure
A malfunctioning back glass wiper motor can significantly impact rear visibility. Common signs of a failing rear wiper motor include:
Wiper Blade Doesn't Move: When the rear wiper switch is activated, but the blade doesn't move or respond.
Intermittent Operation: The rear wiper works sporadically or stops mid-swipe.
Unusual Noises: Grinding, whining, or clicking sounds emanating from the rear wiper area during operation.
Wiper Doesn't Park Correctly: The wiper blade doesn't return to its resting position when turned off.
Maintenance Tips
Proper upkeep of the back glass wiper motor can extend its lifespan:
Regular Use: Operate the rear wiper periodically to keep the motor components from seizing due to inactivity.
Keep Clean: Remove debris and dirt from the rear window and wiper blade to prevent strain on the motor.
Inspect Connections: Check electrical connections for signs of corrosion or loose wires.
Avoid Overloading: Don't force the rear wiper to operate on a dry or icy window, as this can overload the motor.
Installation Tips
When installing a new rear window wiper motor:
Safety First: Disconnect the vehicle's battery before beginning to prevent electrical shocks.
Follow Manufacturer Guidelines: Refer to the vehicle's service manual for specific instructions related to your model.
Proper Alignment: Ensure the wiper arm is correctly aligned with the motor shaft to facilitate smooth operation.
Test Before Finishing: Before reassembling all components, test the new motor to confirm it's working properly.
Importance of the Part
The rear windshield wiper motor is essential for:
Safety: It maintains clear visibility through the rear window, crucial for safe driving and maneuvering.
Vehicle Compliance: Ensuring the rear wiper system is functional may be required for vehicle inspections and regulations.
Preventing Damage: A properly functioning motor prevents potential damage to the wiper system and rear window caused by irregular wiper movements.
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