Why can't the window of Bestune B70 be raised?
4 Answers
Bestune B70 window cannot be raised may be due to poor contact in the window switch, or the window circuit may be faulty, or the window regulator may be malfunctioning. One-touch window setting method: The one-touch window setting method for Bestune B70 is to hold the switch until the glass reaches the top and continue holding the switch for five seconds. Function of the window: The window is a crucial component of the entire car body, designed to meet the needs of interior lighting, ventilation, and ensuring clear visibility for the driver and passengers. Importance of the window: The design structure and quality of the window have a significant impact on ensuring the driver's visibility while driving, passenger comfort, aesthetic appearance, and air circulation.
When my Bestune B70's window won't roll up, it's most likely due to a faulty switch button. If pressing the button yields no response, it could be caused by aged contacts or dust accumulation inside, leading to poor conductivity. Another common culprit is the drive motor, which is responsible for moving the window up and down. If the motor fails or the coil shorts out, the window gets stuck. Alternatively, wiring issues like aged/broken wires or blown fuses can interrupt the current flow. Debris such as mud or leaves stuck in the window tracks can also obstruct movement, while insufficient lubrication increases resistance. I recommend first checking the fuse box—replace the corresponding fuse with a new one to test. Then visit a professional repair shop to avoid causing further damage by DIY attempts. Note that such issues frequently occur in rainy/humid regions where water intrusion after car washes corrodes wiring. Pay attention to unusual window noises for early intervention.
A malfunctioning window that won't roll up directly impacts safety, leaving the vehicle vulnerable to wind gusts or theft. The primary causes may include: a faulty switch where internal contacts are burnt out, resulting in no signal when pressing the button. A damaged drive motor may produce a humming sound without moving the window, indicating power supply issues. Short circuits or broken wires can interrupt power, with blown fuses near the battery being a common occurrence. Mechanical issues like jammed tracks due to accumulated dust or rust can obstruct movement. When encountering this issue, I immediately pull over to inspect, test the switch multiple times to rule out user error, then use emergency tools to close the window before ensuring safe driving conditions and seeking repairs. Such failures occur more frequently in older vehicles—regular maintenance can reduce risks, with simple track cleaning and lubrication preventing jams.
Fixing a car window yourself is quite convenient. Press the switch and listen for any motor sound; if there's no sound, check if the switch is faulty or the wire is broken. If there's sound but the window doesn't rise, the guide rail might be stuck or the motor could be weak. Locate the fuse box, pull out the corresponding fuse to see if it's blown, and replace it if necessary. Clean the guide rail and spray WD-40 for lubrication. Remove the door panel to check if the motor connector is loose. If you're replacing parts yourself, there are plenty of online tutorials, but proceed with caution. Simple issues can be resolved to save the hassle of visiting a technician, but complex problems like a faulty control module still require professional help. Always disconnect the power before working to avoid accidental electric shocks—safety first.
