Why doesn't the window roll up when holding down the lock button on CT5?
2 Answers
The reason why the window doesn't roll up when holding down the lock button on the car key is that the window hasn't been initialized. The failure of the one-touch window roll-up/down feature can cause this issue. When the one-touch window function malfunctions, it can be reset, and after resetting, you can hold down the lock button to close the window. Below is relevant information about the remote key: 1. Principle: The remote control works by the owner pressing a button on the key, which sends a signal containing corresponding command information. The car's antenna receives the radio signal, and after authentication by the Body Control Module (BCM), the actuator performs the lock/unlock action. 2. Functions: (1) After turning off the engine, holding down the lock button can close the windows. (2) Pressing the horn button on the key can alert the owner to the vehicle's location. (3) Holding down the trunk unlock button can automatically open the trunk. (4) Pressing the unlock button on the remote key once opens only the driver's door; pressing it twice opens all four doors.
I recently dealt with an issue on the Cadillac CT5 where the windows wouldn't roll up when the lock button was held down—a fairly common problem. Usually, it's due to the one-touch window-up feature not being activated or a malfunction in the control module. The vehicle needs a reset procedure: sit in the driver's seat, close the door, and hold the window-up button for 15 seconds without releasing it—the system will then reset. Sometimes, dust stuck in the window tracks or poor sensor contact can also cause this issue. In winter, freezing conditions may affect window operation. I recommend first checking the battery voltage, as low power can interfere with electronic systems. If resetting doesn’t work, it’s best to visit a 4S dealership to scan the module codes with a diagnostic tool, avoiding tampering with wires to prevent short circuits and bigger troubles. Safety comes first—address the issue promptly to prevent rainwater from damaging the interior.
