What Causes the Abnormal Noise in Alphard at High Speed?

[RebeccaDella]

Alphard high-speed abnormal noise causes: friction between plastic parts, abnormal noise from the steering wheel, aging of the steering tie rod ball joint. Friction between plastic parts: Since the steering wheel is usually made of plastic components, if the temperature drops, the plastic may harden, naturally leading to friction noise. Abnormal noise from the steering wheel: If the abnormal noise comes from the steering wheel, the issue is most likely caused by the clock spring inside the steering wheel. Remove the steering wheel clock spring and apply some grease to see if the noise persists. If it does, replace the clock spring as it may be damaged. Be gentle when removing the steering wheel or disconnect the airbag fuse to prevent the airbag from deploying. Aging of the steering tie rod ball joint: If the steering tie rod ball joint is aging, it can cause the car's steering wheel to shake and produce noise. In such cases, it is usually necessary to replace the steering tie rod ball joint and perform a four-wheel alignment after replacement.

[AniyahLee]

As an enthusiast who frequently researches automotive issues, I can say that abnormal noises during high-speed driving are quite common with the Alphard. First, it could be a drivetrain issue, such as worn universal joints on the drive shaft or damaged transmission bearings, which may produce clicking or humming sounds under high-speed loads. Second, loose suspension components, like aged shock absorbers or broken bushings, can cause squeaking noises when encountering uneven road surfaces. Another possibility is interior body issues, such as detached door panel clips or aged sunroof seals, which may generate vibrations and noise under windy conditions. For safety reasons, I recommend that owners first try to locate the noise source by driving at low speeds and not ignore the risk that abnormal noises could lead to more serious failures. It's important to promptly visit a professional workshop for a comprehensive inspection, with special attention paid to the chassis and drivetrain components, to avoid compromising driving safety. Don't underestimate this issue—delaying repairs could result in higher costs later.

[EstherFitz]

I've driven an Alphard for several years, and there was a buzzing noise at high speeds. That time it was due to worn wheel hub bearings, and the mechanic said it was caused by insufficient lubrication. Another time, it was uneven tire wear leading to tire noise and wind howling. From daily experience, loose suspension bolts can also cause a clunking sound. I usually do a self-check first, seeing if the tire pressure is normal, and crawling under the car to check if the exhaust pipe joints are loose. It's safer to pull over and check after slowing down on the highway. Although the Alphard is a luxury MPV, these issues can easily arise without regular maintenance, so it's good to develop a habit of checking the bolts monthly.

[DelConnor]

Buddy, the high-speed noise issue with the Alphard is usually pretty straightforward. When I had front-row noise, it was due to loose engine mount screws—just tightening them fixed it. For rear-row noises, it's often the trunk lock mechanism or soundproofing padding coming loose. At high speeds, wind pressure can make loose interior components especially noticeable. Try tapping around the car body edges to locate the source. Don't delay—small issues can turn into big problems. A quick 30-minute check at the repair shop should solve it.