What are the reasons for the BYD S7 transmission failure?
3 Answers
BYD S7 transmission failure may be caused by the following reasons: 1. Transmission: The transmission warning light indicates an internal fault in the transmission. A diagnostic tool can be used to read the fault code, and then the fault point can be identified based on the code. 2. Components: Possible causes include faults in the transmission control module, shift solenoid valve, internal gear wear, or internal friction plates. 3. Note: Factors such as high temperature, lack of lubrication, debris, or incorrect shift software logic can trigger this warning light. Once the warning light comes on, it is recommended to visit a repair shop immediately, as any of these issues can lead to significant problems.
I've been driving a BYD S7 for several years and have encountered transmission issues a few times, which is really frustrating. Common causes include dual-clutch wear, especially noticeable jerking after long-distance driving, or insufficient lubrication due to aging transmission fluid. Once, I checked it myself and found the fluid level was low—adding new fluid improved the situation. But sometimes it's the control module acting up, like a computer glitch, causing sluggish gear shifts. Mechanical parts like gears or bearings can also wear out, possibly from aggressive driving. I recommend regular maintenance at the 4S shop and not delaying oil changes too long, especially since SUVs are prone to issues under heavy loads. If you notice abnormalities like rough shifting or unusual noises, address them early to avoid costly repairs later.
The transmission issues in the BYD S7 are primarily related to its dual-clutch design, which is quite complex from a technical perspective. Common causes include electronic control unit failures, where circuit board malfunctions can lead to disorganized gear shifts, or oil passage blockages causing unstable hydraulic pressure that affects power transmission. The quality of transmission fluid is also crucial, as low-quality fluid or prolonged intervals between changes can corrode internal components. Software updates may also cause compatibility issues, with outdated system versions leading to jerky shifts. It's advisable to drive smoothly, avoiding sudden braking. If symptoms of malfunction appear, using a diagnostic tool to check error codes is a simple and convenient approach. Early professional diagnosis can save a lot of trouble.
