What Causes Door Squeaking When Driving Over Bumps?

[McVincent]

Here are the specific reasons for door squeaking when driving over bumps: 1. Worn Door Hinges: Wipe off surface dust with a cloth or tissue, then use a cotton swab lightly dipped in lubricating oil to repeatedly apply on the hinge and the marked area of the door limiter. Open and close the door repeatedly, reapplying oil and continuing the process until the noise disappears. Avoid excessive lubrication to prevent contamination of other door parts. If the issue persists, it may be due to wear and require replacement of new hinges and limiters. 2. Aging Door Seals: Check if the door seals are aging. Since seals are rubber products, regularly clean dust and rainwater from the seal gaps to prevent aging. As dust easily accumulates in the seal gaps, use a brush to frequently remove sand and dust, then apply a layer of highly permeable protective agent to prevent seal aging. If the seals are severely damaged or significantly aged, they need to be replaced with new ones.