| Ultraviolet exposure and heat |
Sunlight and high temperatures dry, harden, and crack the rubber edge over time. |
Splitting, surface cracks, stiffness, or a blade that no longer conforms to the windshield. |
Leaves unwiped areas and streaks, especially when glare or low sunlight makes contrast more difficult. |
Inspect regularly and replace the blade when the rubber becomes cracked, brittle, or uneven. |
High |
| Ice, frost, and freezing temperatures |
Frozen rubber can tear when the wipers are operated while bonded to the glass. |
Torn edges, missing sections, lifted rubber, or sudden scraping noises after a freeze. |
Creates large untreated sections and may cause the blade frame to contact the glass, reducing visibility and potentially scratching it. |
Freeze the windshield clear before use; lift the blades where appropriate and replace damaged rubber promptly. |
High |
| Dirt, sand, and road grit |
Particles trapped between the blade and glass act as abrasives during each sweep. |
Fine scratches, noisy operation, persistent streaks, or a rough wiping motion. |
Scattered streaks and haze can obscure pedestrians, lane markings, and vehicles during rain or spray. |
Clean the windshield and blade edge with clean water and a soft cloth; replace the blade if damage remains. |
High |
| Low washer-fluid use |
Dry wiping increases friction and accelerates wear on both the rubber edge and windshield surface. |
Chattering, squeaking, skipping, or visible drag across a dry windshield. |
Produces uneven cleaning and can rapidly create glare-producing smears. |
Use washer fluid before wiping dusty or dry glass; avoid operating the wipers on a dry windshield. |
Medium |
| Oil, wax, insects, and exhaust residue |
Contaminants reduce the blade's ability to maintain uniform contact with the glass. |
Smearing, hazy films, repeated streaks, or areas that appear clean only after several passes. |
Creates glare and reduces contrast, particularly at night or when facing headlights. |
Clean the glass thoroughly and remove residue from the blade; replace it if smearing continues. |
High |
| Incorrect installation or poor fit |
A loose adapter, incorrect size, or incompatible connector can prevent even pressure across the blade. |
Loose movement, uneven wiping, lifting at speed, rattling, or an exposed connector. |
May leave unwiped zones and can cause sudden loss of wiping performance during heavy rain. |
Confirm the correct blade length and connector; check that the adapter locks securely. |
High |
| Worn wiper arm or weak spring pressure |
A bent arm or weak spring fails to press the blade evenly against the windshield. |
One section wipes well while another skips, lifts, or remains wet. |
Reduces the driver's clear viewing area and can leave critical sight zones untreated. |
Inspect arm alignment and spring tension; repair or replace the arm if a new blade does not correct the issue. |
High |
| Frequent heavy rain, snow, and road spray |
High operating frequency and contaminated water increase friction and mechanical stress. |
Performance declines sooner than expected, with chatter, skipping, or uneven clearing. |
Visibility can deteriorate quickly during storms when continuous wiping is essential. |
Inspect before the wet season and replace blades when performance becomes inconsistent. |
Medium |
| Infrequent use and long-term storage |
Rubber can take a set, harden, or bond to the glass when left unused for extended periods. |
Flat spots, vibration, skipping, or a blade that does not return smoothly. |
Produces intermittent clear and blurred areas, making sudden weather changes more hazardous. |
Inspect after long storage and test the blades with washer fluid before driving in rain. |
Medium |
| Normal aging and repeated flexing |
Repeated movement gradually reduces rubber elasticity and edge sharpness. |
Streaks, skips, squeaks, chatter, or visible deterioration after months of service. |
Reduces clarity and increases driver workload because more frequent wiping is needed. |
Many wiper blades require replacement about every 6–12 months, but climate and use may shorten or extend this interval. |
Medium |
| Damaged or contaminated windshield |
Chips, pitting, rough glass, or embedded contaminants wear the rubber edge unevenly. |
New blades continue to streak, catch, skip, or produce a repeating mark in the same location. |
Persistent optical distortion and glare may remain even after blade replacement. |
Have the windshield professionally cleaned or inspected; repair eligible damage and replace severely worn glass. |
High |