What to Do If the Wiper Arm Fixing Screw Is Loose?
2 Answers
Turn on the car's power, move the wiper to the edge of the glass, then turn off the power. Open the hood and loosen the left wiper screw. Move the screw to the correct position, then tighten it and turn on the power until the wiper automatically returns to the lowest position. Loosen the right wiper screw, push the left wiper forcefully to the hidden position, then tighten the screw.
I've encountered loose wiper arm screws several times, and as someone who frequently tinkers with cars, the fix is straightforward. First, park the car on level ground and turn off the engine for safety. Pop the hood and locate the mounting screw at the base of the wiper arm—positions vary by model but it's usually beneath the windshield. I use a socket wrench (check the manual for size or test-fit the closest match) to carefully tighten the screw with moderate force—no excessive twisting to avoid stripping threads or damaging the arm. After tightening, wiggle the wiper arm to confirm it's secure. For rusted screws, spray a lubricant like WD-40, wait a few minutes, then proceed. If the screw hole is worn, a metal washer does the trick. Preventively, I check screw tightness quarterly and apply threadlocker to prevent loosening. Pre-rainy season inspections are mandatory to avoid wiper failure during heavy downpours, which compromises visibility and safety. Addressing minor issues promptly extends wiper lifespan and saves money.
