How to Fix the Sunroof Rattle in Sonata VIII?
4 Answers
Solutions for the sunroof rattle in Sonata VIII are as follows: 1. If the rattle is caused by gaps in the sunroof, applying tape or 3M adhesive can solve the issue. 2. The rattle might be due to dirt in the sunroof tracks, damaged or aged seals around the sunroof, or loose components. It is recommended to clean the dirt, replace any damaged or aged seals, and secure any loose parts. Additional Information: The Sonata VIII is a mid-size sedan under Beijing Hyundai, featuring a MacPherson strut front suspension and a multi-link rear suspension. In terms of dimensions, the Sonata VIII measures 4955mm in length, 1860mm in width, and 1445mm in height, with a wheelbase of 2890mm. For powertrain, the Sonata VIII is equipped with a 1.5T turbocharged engine paired with a 7-speed dual-clutch transmission.
My Sonata's sunroof used to squeak annoyingly too. I figured out a solution—first wiped the dust and sand particles off the tracks with a towel, then sprayed some specialized sunroof lubricant bought online, and the effect was immediate. If this doesn't work for you, chances are the sliding rail has aged, and you'll need to spend around a hundred bucks to replace the rubber seal. I also noticed the sunroof tends to squeak more after rain, so now I make sure to dry the track gaps every time after washing the car—it hasn't given me any trouble for over two years. If you're DIY-ing, remember to have a pair of needle-nose pliers handy to tighten the screws, but don't overdo it.
An experienced auto repair master once told me that if the sunroof of a Sonata 8 is making strange noises, it's most likely due to insufficient lubrication on the sliding rails. There are two things you can do yourself: First, grab a bottle of silicone-based lubricant spray and give the sunroof rails a few quick sprays, then open and close the sunroof three or four times to evenly distribute the lubricant. Another key point is the sunroof rubber seal—if it's aged, it can creak like a worn-out tire. You can temporarily fix it by wiping the seal with a soft cloth dipped in rubber protectant, but if it's cracked, you'll need to replace it entirely. If the rails are deformed, it's more troublesome—last year, I spent over 200 yuan at a repair shop to have the positioning bolts adjusted. Before you start, it's best to remove the reading light cover panel to check if any screws are loose.
Just fixed the sunroof rattle on my Sonata 8 last week. Only needed three tools: WD-40 silicone lubricant, a toothbrush, and wet wipes. After lifting the sunroof, used the toothbrush to clean out all the dust from the track grooves, wiped it clean with a wet cloth, then applied the lubricant. The key is to spray it on the metal tracks on both sides, avoiding the plastic parts. The noise stopped immediately after treatment, and it's been quiet for half a month now without recurrence. If the noise persists, consider adjusting the frame or replacing the seals, and it's recommended to go directly to a 4S shop. Avoid parking under direct sunlight to slow down rubber seal aging.
