- #TOYOTA HIGHLANDER UNDER HOOD RATTLING NOISE BUMPY ROAD INSTALL#
- #TOYOTA HIGHLANDER UNDER HOOD RATTLING NOISE BUMPY ROAD PROFESSIONAL#
Not a huge prob or likely to break the bank. The genuine part has a cord impregnated into the rubber and it is when the wear gets down to this cord that the noise occurs. You could try greasing them to see if the noise disappears, although they are specified to be installed dry at factory most after market replacements are installed with grease. The good news is that they are quite inexpensive and easy to fit. They typically make the noise when diagonal obstacles are encountered as in the video, one wheel over the bump, the other not. They are often hard to diagnose because they become dry before wearing out, so appear perfectly ok when inspected, wrestling with the bar etc. Have someone put it up on a four post-drive on hoist and bounce it whilst listening underneath. In my experience the "D" bushes that mount the stabilizer bar to the chassis can make a noise like that and they can be difficult to diagnose because when the car goes in the air on a 2 post hoist, the wheels hang in an unnatural position. I tend to think the shocks/struts are simply tired but Toyota will not replace because there's no visible sign of oil leaking. One theory i've heard is worn suspension mounts.
#TOYOTA HIGHLANDER UNDER HOOD RATTLING NOISE BUMPY ROAD PROFESSIONAL#
I am a professional engineer and have excellent mechanical intuition. To go one step further, I would gladly meet with a Corporate Toyota rep at HQ in Torrence to demonstrate the issue (especially considering this seems to be a common complaint. I would happily take video or provide more information to help diagnose the issue. I already had the "Metallic Knocking" engine mount TSB done. The latter can induce a longer "groan" instead of a short knocking. I noticed that the "clunking/knocking" sound is more pronounced when the brakes are lightly applied (not gripping) while going over bumpy pavement at low speed (15-20 mph) and also when creeping askew over steep/sharp changes in vehicle pitch, such as rolling over a driveway apron and a single wheel momentarily suspends in air. The dealer has yet to acknowledge any issue, I usually get the "normal operation" response. Now at 78K miles and condition is slowly worsening. As an added bonus, you get to give your car’s interior a touch of style for under 20 bucks.My '07 has done this since 35K miles. This saves you the trouble of removing parts, and it “tightens up” the whole dash.
#TOYOTA HIGHLANDER UNDER HOOD RATTLING NOISE BUMPY ROAD INSTALL#
Install All-Fit gap trim in all the gaps in the dash.
It’s a better solution than just re-tightening the fasteners, but some people may find it a bit complicated and time-consuming. Replace the part and re-tighten the fasteners. Then add some double-sided adhesive tape to some out of sight places. If you feel that tightening the fasteners isn’t enough, you can remove the part. However, this solution is usually temporary because the fasteners came loose in the first place for a reason. You can attempt to tighten any fasteners that hold the plastic part in place. Once you have found the source, you have a few ways to stop the rattle: 1. Inspect the area to see if any fasteners are loose.When the rattle noise stops, then the spot where you’re pushing is where the rattle is coming from.While they are driving, firmly push with your hand on all of the places on the dash where you think you hear the rattle.Get a friend to drive your car on a bumpy road that will cause the rattle.
You just need a friend and a pair of hands. You don’t need any fancy tools to figure out where the rattle is coming from.
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