
The reasons why the Vellfire's power sliding door is not working automatically are as follows: 1. First, check whether there are any abnormal looseness, corrosion, or poor connections in the fuse, control switch, and wiring harness connectors; 2. There may be an issue with the controller. In this case, it is recommended to have it inspected at a 4S shop. Additional information: Automotive power doors can be categorized by their opening and closing mechanisms into sliding doors, swing doors, and revolving doors. 1. Sliding doors: These can be further divided into single-opening, double-opening, overlapping single-opening, overlapping double-opening, and curved doors. Curved doors slide smoothly along curved tracks and can be classified as semi-curved single-direction, semi-curved double-direction, or fully curved double-direction. To maximize the entrance width, some sliding (telescoping) automatic doors can be designed to overlap with a fixed panel at the end of their travel and then open manually, which is also classified as a sliding automatic door; 2. Revolving doors: These can be further categorized into central-axis type, circular-track suspended type, and central-display-area type; 3. Swing doors: These can be subdivided into single-leaf single-direction, double-leaf single-direction, single-leaf double-direction, and double-leaf double-direction.

After driving a Vellfire for several years, I've also encountered issues with the automatic sliding doors not working. Once, the door suddenly stopped functioning, and after some troubleshooting, I identified several common causes. The most likely culprit was insufficient battery voltage - if the power supply is unstable after starting the vehicle, the door system may fail. Dirty sensors can also cause trouble; when the detectors near the door get blocked by dust or mud, they might falsely detect obstacles and disable the automatic function. Occasionally, the control module may malfunction and require a reboot or software update. Other possibilities include jammed door tracks or excessive motor load due to aging components. At the repair shop, the mechanic mentioned that fuses often blow and suggested checking the fuse box for DIY replacement. Neglecting these issues can be quite troublesome - making entry/exit inconvenient and causing delays. Regular cleaning of door tracks and sensors is recommended for prevention. Addressing these problems early saves both time and effort.

Electric door malfunctions are mostly due to electrical faults. I often discuss this with friends. First, check if the relevant fuse in the fuse box has blown—fuses can easily break due to excessive current or aging. Poor circuit contact or short circuits can also interrupt signal transmission. A faulty relay prevents control signals from reaching the motor. Worn-out switch buttons can also affect responsiveness. When the battery is weak, door functionality is given lower priority. For simple self-checks, wipe the sensor area clean with a cloth and test. It significantly impacts convenience—manually opening or closing the door in the rain or while carrying items is frustrating. Just visit a professional shop to have the system tested with tools.

As a parent who frequently picks up and drops off kids, it's really frustrating when the door stops working automatically. Manually pulling the door is not only laborious but also unsafe, especially for shorter individuals who can't reach it. Common causes include sensors being blocked by debris and malfunctioning, or the vehicle's battery running low after prolonged parking, leading to module failure. Try cleaning the detection area around the door edge yourself. Regularly keeping the tracks clean can help reduce malfunctions. Prompt repairs are essential to avoid dangerous situations.


