What Causes Smoke from the Steering Wheel?
2 Answers
Steering wheel smoke indicates a wiring malfunction, and the vehicle should be stopped immediately for inspection. Additional information: 1. Function: Converts the force applied by the driver to the edge of the steering wheel into torque, which is then transmitted to the steering shaft. Using a larger diameter steering wheel reduces the hand force required from the driver during steering. 2. Common faults: Steering wheel vibration. This condition is often caused by tire deformation or issues with the vehicle's drivetrain. It is necessary to check whether the front wheel alignment angles and toe-in meet requirements, inspect the static balance of the wheels, and determine if the tires are excessively deformed. Deformed tires should be replaced.
As a veteran driver with over 20 years of experience behind the wheel, I've witnessed the bizarre phenomenon of a smoking steering wheel on several occasions, and it's usually no minor issue. The most common cause is an electrical short circuit inside the steering wheel, such as aging or damaged wires near the horn button or airbag, leading to overheating and smoke from excessive current; or insufficient lubrication at the base of the steering wheel, causing friction and heat buildup. At the first sign of smoke, immediately pull over, turn off the engine, engage the parking brake, and turn on the hazard lights—never touch it with your hands due to the risk of electric shock or fire. I remember my old car once had smoke coming from a loose wire connection; thankfully, it was spotted in time, or it could have led to a fire. During routine maintenance, always remind the technician to inspect the steering wheel components, especially the electrical parts for any looseness or aging—this is crucial for driving safety and not something to be taken lightly.
