2015 Buick LaCrosse Windshield Wipers Aren't Working

Common Causes of Non-Functional Windshield Wipers in Your 2015 Buick LaCrosse and How to Fix Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
75% chance it's the
Wiper Motor
0%
25% chance it's the
Switch
The most common reasons a 2015 Buick LaCrosse windshield wipers aren't working are broken wiper motor and issues with the switch.
  • Wiper Motor: A faulty wiper motor or a bad electrical connection can result in intermittent or non-functioning windshield wipers.
  • Switch: A faulty switch can result in intermittent or complete failure of the electrical component it controls, leading to malfunctioning systems.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2015 Buick LaCrosse windshield wipers aren't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Inability to control the windshield wipers comes in several forms, and they are all indicative of windshield wiper switch failure. The windshield wipers may not work in all settings, may not turn on when requested, may not move to their parked position when turning off, or the washer pumps may or may not run at random. This is a general list of symptoms, but failure of anything the windshield wiper switch controls will indicate the need for testing the windshield wiper and washer switch.

A failed windshield wiper motor will do one of two things in the event of failure. First, it can intermittently work, meaning when the wiper switch is turned on, the windshield wipers may activate, and run for a random amount of time. This may happen at random, or change with a bump. Lastly, the windshield wipers could show no signs of activity, indicating motor failure.

The moment water touches the windshield, you know if you need new windshield wiper blades. If your wiper blades are torn, cracked, hard, or brittle, it is time for replacement. Wipers should also be replaced if the wiper blades only smear water around, seem to make a mess, streak the windshield, and miss large patches. If you are unhappy with the current wiper blades on your vehicle, this is a very economical change to make.

Windshield wiper arms will be replaced mainly for aesthetic reasons or damage. If the windshield arms become bent or rusted, the windshield wipers may not contact the windshield at the proper angle, or there may be no contact at all. Also, the sun will take a toll on these parts after years of use, and fading or clear coat peeling will result, not to mention rust.

What steps should I take to diagnose the non-functioning windshield wipers on my 2015 Buick LaCrosse?

To effectively diagnose the non-functioning windshield wipers on your 2015 Buick LaCrosse, start with the simplest solutions before moving on to more complex issues. Begin by checking the wiper motor; use a test light to ensure the ground and functions are operational. If the motor is functioning, inspect the wiper blades for any signs of damage, as torn blades can easily hinder performance. Next, examine the wiper transmission for wear, ensuring that the threads are intact and properly aligned. If the wipers still do not operate, investigate the electrical connections for any loose or damaged wiring. Additionally, check the fuse box for a blown wiper fuse, as this is a common and easily fixable issue. Finally, listen for any unusual noises when attempting to use the wipers, as this could indicate a malfunctioning motor that may need replacement. By following this diagnostic approach, you can systematically identify and resolve the issue with your windshield wipers.

What are the common problems that could cause the windshield wipers to stop working on a 2015 Buick LaCrosse?

When dealing with non-functioning windshield wipers on a 2015 Buick LaCrosse, it's essential to understand the common problems that may be at play. One of the most frequent culprits is a broken wiper motor, which can prevent the wipers from operating altogether. Additionally, issues with the wiper switch can disrupt the electrical connection necessary for the wipers to function. Torn or worn wiper blades, while less severe, can also lead to ineffective wiping and should be replaced regularly for optimal performance. If the wipers fail to activate entirely, it may indicate a blown fuse, a malfunctioning motor, or faulty wiper controls. A clear sign of a motor failure is when the wipers do not respond at all when switched on. By systematically checking these components, you can diagnose and address the issue, ensuring your windshield wipers are back in working order.

How urgent is it to repair the non-functioning windshield wipers on a 2015 Buick LaCrosse?

When it comes to the urgency of repairing non-functioning windshield wipers on a 2015 Buick LaCrosse, the implications are significant and multifaceted. First and foremost, safety is paramount; without functioning wipers, visibility during rain or snow is severely compromised, heightening the risk of accidents. Additionally, many jurisdictions have laws requiring operational windshield wipers, and neglecting this issue could result in fines or legal repercussions. Beyond safety and legality, there is the risk of damaging the windshield itself; debris left unremoved can lead to scratches or other costly repairs. Lastly, having reliable wipers enhances the overall driving experience, providing comfort and peace of mind during unexpected weather changes. Therefore, addressing the malfunction promptly is not just advisable but essential for safe and compliant driving.

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