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What Causes the Abnormal Noise in Tang DM on Bumpy Roads?

1 Answers

JesseLynn

07/29/25 6:54pm

The abnormal noise in Tang DM on bumpy roads can be caused by various reasons, such as loose screws or issues with the steering column. Below is an analysis of the potential causes: 1. Loose related screws: During the test drive, the noise originated from the steering column and steering wheel area, suspected to be transmitted from the chassis to the column. All chassis screws were checked and tightened, with no looseness found. 2. Steering column issue: After removing the main airbag, instrument panel, combination switch, clock spring, and column cover, and only installing the steering wheel for a test drive, the fault persisted. 3. Steering gear problem: Upon removing the related decorative panels near the column, it was discovered that the reserved knee airbag connector of the instrument wiring harness was tightly pressed against the instrument panel body, suspected to cause impact noise when driving on bumpy roads. 4. Interference with related components: After securing the knee airbag connector and its main wiring harness with tape, the test drive confirmed the fault was resolved.

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