Why does the steering wheel make noise when the air conditioner is on and the car is stuck in traffic?

[LaAlana]

Reasons for the noise from the steering wheel when the air conditioner is on and the car is stuck in traffic: friction noise from the steering wheel horn electrode, noise from the steering wheel return lever. Friction noise from the steering wheel horn electrode: This type of noise is common in cars without airbags, where there is only a horn button on the steering wheel. In this case, the fixed electrode needs to be removed, and the contact point should be polished to make the contact surface smooth, which can eliminate the noise. Noise from the steering wheel return lever: This is not a malfunction, and experienced drivers are familiar with it. The turn signal has an automatic return function. When the turn signal is turned on and the steering wheel is turned, the steering column hitting the return lever will produce a clicking sound, which is not a malfunction.