Visibility
Wiper blades
Streaking, chatter and torn edges, plus how to measure blade length and store wipers through winter.
Typical interval: Every 6 to 12 months
Wiper rubber hardens from sunlight and ozone whether or not it is used, so blades often fail on age rather than sweeps. Test on genuinely clean glass with fresh washer fluid, because grit on the windshield mimics a worn blade.
Streaking usually means a torn or hardened edge. Chatter across the glass points to a blade that has taken a set in one direction or an arm that no longer sits square to the windshield.
In freezing climates, lift blades away from ice rather than running the motor against a frozen blade, and clear the base of the windshield so the arms can travel their full path.
What to check
- Measure driver and passenger blades separately
- Clean the glass before judging blade condition
- Replace in pairs so wear stays even
- Free blades from ice before switching the motor on
Also worth knowing
- Testing blades with clean glass and fresh fluid
- Winter versus all-season blade construction
- Protecting the arm spring during ice removal
AutoLab Maintenance publishes general vehicle maintenance information. Our guides, checklists and reminders are informational only and do not replace your owner's manual or the judgment of a qualified technician. Always follow the manufacturer service schedule for your specific vehicle.