What is the reason why the sunroof of the eighth-generation Accord can open but not close?
3 Answers
It is because the car's anti-pinch function is activated; simply turn off the anti-pinch function. Below are some related additional details: 1. The function of power windows: On one hand, it is to reduce the labor intensity of the driver and passengers, making operation very convenient; on the other hand, the rising speed of power windows is relatively fast, which may lead to accidents where passengers could get pinched. The anti-pinch function of power windows can safely address the potential hazards caused by power windows. When a car window encounters an obstacle while rising, it can automatically retreat to the bottom, preventing accidents. Many window anti-pinch functions use Hall sensors to determine the position of the glass. During the process of the car window glass rising, if something blocks the glass from rising, it will immediately stop rising. 2. The principle of the anti-pinch function: An additional set of current sensors is installed, with Hall sensors continuously monitoring the motor's speed. When the power window rises and the motor speed slows down, the Hall sensor detects the change in speed and reports it to the ECU. The ECU then sends instructions to the relay, causing the current to reverse, which stops or reverses (lowers) the motor. As a result, the window stops moving or lowers, providing a certain degree of anti-pinch functionality.
I've been driving an eighth-generation Accord for nearly ten years and have encountered the issue of the sunroof opening but not closing several times. The reasons are mostly due to aging switches or poor button contact—either the button doesn't respond when pressed or the signal fails to reach the control module. Additionally, dust buildup in the sunroof tracks or leaves getting stuck can easily cause the motor to jam, allowing it to open but not close. Once, during a rainy day, I was in a real panic. Eventually, at the repair shop, they found that the motor gear was worn out, and replacing it solved the problem. For regular maintenance, pay attention to cleaning the track grooves and periodically spray lubricant to prevent rust. Such malfunctions are common in older cars—don't try to force the window shut yourself, as it can easily break the glass or damage the motor. Getting it professionally fixed is safer and more hassle-free.
My Accord's sunroof sometimes acts like this too—opens smoothly but won't close, possibly due to inaccurate button presses or the anti-pinch feature activating. Check if the button feels sluggish or has abnormal travel, as dust buildup can slow its rebound and affect control signals. Also, debris like small stones or paper scraps stuck in the window tracks can hinder sliding and prevent closing—I often use a flashlight to inspect and clean them. Additionally, loose wiring connections might cause the motor to be unresponsive; try gently wiggling the connectors first. Prevention is key: a monthly wipe-down of the tracks helps avoid minor issues escalating—it works wonders.
