Originally Posted by
pizzaguy
When you turn the D handle, the fingers of the D latch release the switch in the frame, this switch is wired to the Power Top Control Module (PTCM). When the PTCM gets this signal, it sends a command to the BOdy Control Module (BCM) to lower the windows. If the top module is not in the car, the windows will not go down.
Severe failures of the Power Top Control Module are rare, and failures of the pump are rare. Most problems are caused by the switches and sensors in the system.
The bad sound the top made when it quit working sounds like low fluid, caused by a leak. This might be due to a damaged or bad pump, but I think it was probably caused by low fluid.
When I heard that sound, I decided to take my car to the service immediately. When they returned the car to me, the red light was flashing on the top button. Now when they put the top module back on, the same situation continues. What does it mean if the light is constantly flashing? If it's missing fluid, I'll try to put fluid in my car and run the top. I have read your topic. After the put fluid, if i manually open and close the top 3 times while the car is running, is there any chance of improvement? How do i know if this is a top module malfunction or one of the sensors? Which one does the flashing button indicate?