How to Solve B-Pillar Abnormal Noise?
2 Answers
Here are the solutions for B-pillar abnormal noise: 1. Passenger-side B-pillar noise: You can fasten the seat belt even when there is no passenger to check if it is caused by the metal buckle of the seat belt hitting the plastic panel below the B-pillar. 2. Loose clips inside the B-pillar plastic cover: If there is a gap between the inner side of the B-pillar plastic cover and the B-pillar steel plate causing impact noise, or if slight deformation of the B-pillar leads to friction noise between the plastic cover and the steel plate, inject cavity foam into the noisy area according to the manufacturer's measures. Alternatively, forcefully inject cavity foam into the B-pillar interior; apply 3M foam tape to the inner side of the B-pillar plastic cover. 3. Loose clips inside the B-pillar plastic cover: Disassemble and tighten them directly. 4. Front seat backrest noise mistaken for B-pillar noise: This is usually due to issues with the fit between the seat back frame pivot and the frame, such as excessive gaps or loose bolts, leading to abnormal noise. If under warranty, you can claim for replacement. If out of warranty, inject cavity foam into the gaps to resolve the issue.
My car had a squeaking noise from the B-pillar before, which was quite annoying. I looked into it and found that the most common causes are a loose seatbelt retractor or worn door latch striker. I'll start by giving the seatbelt a few strong tugs to check if it's securely fastened. If that's not the issue, I'll lubricate the door hinge and weatherstrip with some WD-40. If the noise persists, it might be due to wiring or plastic parts rubbing inside the B-pillar trim—applying some soundproofing felt should quiet it down. I remember one time the noise was caused by body shaking on bumpy roads, but that requires professional repair. A DIY fix takes about 20 minutes, so don't delay as it could affect driving safety. If you're not handy, it's better to take it to a repair shop for peace of mind.
