Windshield wipers and washers
The federal wiper rule, and NHTSA's winter checks.
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The federal rule
FMVSS 104 says: "This standard specifies requirements for windshield wiping and washing systems." It says: "Each vehicle shall have a power-driven windshield wiping system."
Two speeds
FMVSS 104 says each windshield wiping system "shall have at least two frequencies or speeds."
Washers
FMVSS 104 says: "Each passenger car shall have a windshield washing system." It sets a separate washer rule for multipurpose passenger vehicles, trucks, and buses.
Blades
NHTSA says: "Make sure defrosters and all windshield wipers work and replace any worn blades."
Washer fluid in winter
NHTSA says: "You can quickly go through a lot of windshield wiper fluid in a single snowstorm." It says to keep your reservoir full of winter fluid with de-icer before winter weather hits.
Replacing blades
We give no blade replacement steps. Your owner's manual describes your vehicle. Use a qualified professional.
FAQ
General information only. We are not a glass shop, insurer, or agent, and we do not schedule, quote, or refer. Whether your policy covers glass damage, and what you would pay, depend on your policy and your insurer; read your policy and ask your insurer or agent. If your vehicle has driver assistance features, follow your vehicle maker's instructions and owner's manual on any calibration after glass work.
Next: defrosting and defogging
The federal rule, and your controls.
