Wiper Motor Struggling in Cold Weather? Here’s Why

Winter driving presents unique challenges, and one common frustration is a struggling wiper motor. When your wipers move sluggishly or fail to clear the windshield effectively in cold weather, it’s not just an inconvenience; it can be a safety hazard. Several factors contribute to this issue, all stemming from the impact of low temperatures on the components of your car. Understanding these reasons can help you take preventive measures and keep your wipers functioning optimally throughout the winter months.

Thickened Wiper Fluid and Ice Buildup

The most immediate issue in cold weather is the increased viscosity of wiper fluid. Standard wiper fluid can thicken significantly as temperatures drop, making it harder for the pump to push the fluid through the lines and onto the windshield. This reduced flow can lead to incomplete cleaning and streaking, putting extra strain on the wiper motor. Additionally, ice and snow buildup on the windshield and wiper blades create added resistance. The motor must work harder to overcome this friction, potentially leading to slow movement or even stalling.

Motor Lubrication and Battery Performance

The internal lubrication of the wiper motor itself can also be affected by cold temperatures. Grease and other lubricants become thicker in the cold, increasing friction within the motor’s moving parts. This added resistance requires more power to operate the motor at its usual speed. Furthermore, cold weather reduces battery performance. Car batteries struggle to deliver sufficient current in low temperatures. A weaker battery can mean the wiper motor isn’t receiving the power it needs to operate effectively, especially when combined with the increased resistance from thickened fluids and ice buildup. For making sure of the proper maintenance, using the Auto Repair in Chesapeake, VA based service would be essential.

Wiper Blade Condition and Linkage Issues

The condition of your wiper blades themselves plays a significant role. Old, worn, or cracked blades are less effective at clearing the windshield, regardless of the weather. In winter, the problem is compounded as the brittle rubber struggles to maintain contact with the glass in the cold, causing streaks and inefficiency. Additionally, the wiper linkage, which connects the motor to the blades, can become stiff or corroded over time. Cold weather can exacerbate these issues, making it harder for the motor to move the blades smoothly and efficiently.

Preventative Measures for Optimal Winter Wiper Performance

To combat these issues, there are several steps you can take. Firstly, use a winter-specific wiper fluid that’s formulated to remain fluid even in sub-freezing temperatures. This will ensure proper fluid flow and cleaning. Secondly, regularly clear ice and snow from your windshield and wiper blades before starting the car. This reduces the initial strain on the wiper motor. You should also ensure your car battery is in good condition. A battery test can determine its cold-cranking amps and overall health. Finally, consider replacing your wiper blades with winter-specific blades that are designed to resist ice buildup and maintain flexibility in cold conditions. Periodically lubricating the wiper linkage can also help ensure smooth operation.