What Causes the Steering Gear Failure in BYD Tang?

[Edmund]

The steering gear failure in BYD Tang is caused by loose or detached connectors. Below are relevant details about the steering gear failure in BYD Tang: Symptoms of BYD Tang steering gear failure include: difficulty in steering wheel returning to center; steering wheel shaking or veering off; uneven steering wheel resistance (heavy on one side, light on the other); steering gear oil leakage; and abnormal noises from the steering gear. The steering gear amplifies the force transmitted from the steering wheel to the steering linkage and alters the direction of force transmission. It can be classified into various types based on structural design. Taking the BYD Tang 2021 2.0T Automatic Flagship model as an example, its body dimensions are 4870mm in length, 1940mm in width, and 1720mm in height, with a wheelbase of 2820mm. It features front-wheel drive, a front MacPherson independent suspension, and a rear multi-link independent suspension. Solution: First, check if the connectors are loose or detached, particularly the motor and ECU connectors. Upon inspection, the connectors were found to be normal and fault-free. Then, use VDS1000 to check for any motor-related upgrade items. After scanning, three fault codes were detected in the electronic power steering system: torque sensor fault; steering angle signal fault; and motor overcurrent fault. Analyze the commonalities among these three faults. From the third fault, it appears to be caused by poor grounding. By consulting the circuit diagram, it was found that these three faults intersect. Upon locating the motor grounding point, it was discovered that the presence of electrocoating at the screw caused poor grounding. After grinding and reassembly, the fault persisted. Upon re-reading the fault codes, the motor overcurrent fault still existed. Initially thought to be a motor fault, but upon rechecking the grounding point, a protrusion was found at the grounding weld point. Further inspection revealed only one contact point on the wire clamp's attachment surface, confirming poor grounding.

[KateLee]

I've been driving the BYD Tang for a while now, and the steering gear malfunction is really annoying. The most common cause is an issue with the electric power steering system, such as a burned-out motor or sensor failure. A sensor losing signal can make the steering wheel heavy or stuck, which is especially noticeable during high-intensity driving. Unstable battery voltage is also a potential hazard, as BYD's hybrid system sometimes causes insufficient power assistance in low-power states. I've also encountered software bugs in the control module, which required a program update at the 4S store to fix. It's recommended that owners avoid keeping the steering wheel turned in place for too long and regularly check the steering gear connection points to prevent corrosion. Once a malfunction occurs, slow down and pull over immediately—don't force it to drive. Safety first. Paying attention to tire pressure and suspension can also reduce steering burden.

[DavidFitz]

As a Tang owner, I've noticed that steering gear issues often stem from daily usage habits. Applying excessive force when turning the wheel for prolonged periods can trigger the power assist motor's overheating protection, causing the steering wheel to suddenly stiffen. Aging wiring or loose connectors are also common culprits, especially when frequently driving on bumpy roads where connections may come undone, interrupting signals. On the power supply side, if the battery is undercharged or the alternator malfunctions, the EPS system may fail due to insufficient power. I recommend cultivating good habits: steer gently and avoid jerking the wheel too hard when parked. Regularly inspect wiring harnesses for integrity and check that relevant fuses in the fuse box haven't blown. When issues arise, try turning the engine off and restarting first; if that doesn't work, seek professional repair instead of attempting DIY fixes. Maintaining proper wheel alignment and chassis balance can also help prevent steering gear wear.

[VonMiranda]

Power steering failures are quite common in BYD Tang models. I believe the root causes mostly lie in the electronic systems, with EPS motor damage, sensor failures, or control unit errors being the primary culprits. Dirty or waterlogged sensors can affect readings, and motor burnout from overload is the most frequent issue. Short circuits or poor connections in wiring also occur frequently, especially in humid regions. It's recommended that owners regularly visit 4S shops for steering system diagnostics and sensor probe cleaning. When initial symptoms appear, don't panic - safely pull over and inspect. EPS maintenance is simple, just check the connectors once a year.

[LeilaRose]

It's really frustrating when the steering occasionally fails while I'm driving this car. It may suddenly become heavy due to overheating of the power steering motor or abnormal power supply. Sensor failures, such as dust blockage, can send erroneous signals, and control module bugs were only resolved after system updates. Wiring issues, like aging or loose connectors, are often the trigger, especially after water exposure. It's recommended to check the power steering fluid level and motor seals during routine maintenance. Don't delay if problems are found; take safety measures by pulling over and turning on hazard lights to reduce accident risks. Regularly study the steering maintenance section in the vehicle manual to prevent minor faults from becoming major issues.

[LaEdward]

The steering gear failure of BYD Tang is often related to the electric power steering system. Motor overheating protection activation can make the steering wheel heavy and powerless, while sensor errors reduce steering accuracy. Poor battery condition leading to insufficient power supply is another factor, and control software errors improve after updates. Line corrosion or poor connections are especially common on uneven roads. I recommend that owners pay attention to driving habits, avoiding sharp turns and heavy steering loads. Regularly inspect the steering system connections and address any abnormalities early. Periodic professional ECU scans can prevent failures, ensuring safe and smooth driving.