Why does the door unlock motor make a squeaking sound?
2 Answers
Door unlock motor squeaking is due to prolonged use, causing the hinges to make noise. At this time, adding lubricating oil can keep the pulley smooth and eliminate the noise. Additionally, the door and the car body are connected by a door stopper. Open the door to its maximum angle, clean the grease and dirt from the stopper arm, stopper pin shaft, and connecting bracket surfaces, then apply an appropriate amount of grease to the upper and lower surfaces of the arm to eliminate the noise. Also, check if the door seal has aged, as aging can cause friction noise. Cleaning the dust and rainwater from the seal gaps or replacing the seal can prevent aging.
The squeaking noise from the door unlock motor is usually caused by mechanical issues inside the motor. The most common reasons are gear wear or lack of lubrication grease - I often encounter this situation when repairing cars, as older vehicle motors naturally develop this problem with prolonged use. Additionally, dust or small stones stuck in the gears can also produce that harsh, annoying sound. Many people overlook that unstable voltage causing poor motor operation can also lead to squeaking, so it's best to check the wiring connections. If left untreated, worsening wear can cause the entire door lock system to fail, which would be troublesome when you can't open the door. I recommend first trying lubricant spray to see if it helps. If ineffective, quickly consult a professional mechanic for disassembly and repair to prevent damage to more expensive components. Small car problems accumulating can affect safety, so paying attention to these details during regular maintenance can save you a lot of trouble.
