Are automatic transmissions controlled by a computer?
Most, or perhaps all, late model automatic transmissions are computer controlled. Through sensors the computer knows what the accelerator position is, the car speed is, the engine speed is, the selector lever position is, and perhaps also other information. From that information it decides which gear to use.
How do automatics know when to shift?
An automatic transmission uses sensors to determine when it should shift gears, and changes them using internal oil pressure.
Why is electronic control used in automatic transmission?
The AT electronic control system, as the brain of the AT, is mainly to communicate with other VOBCs through various sensors to obtain real-time transmission, engine and vehicle operating state, achieve accurate shift control and clutch control according to the vehicle speed, accelerator pedal and other signals, free …
How does an automatic transmission decide to shift?
So say there is an automatic transmission in a car. Is there a computer inside the transmission that decides to change gears, or is there a computer in the car that tells the transmission to change gears? If the computer is in the transmission, how does it decide to shift? What about it’s in the car?
Which is the most dangerous automatic transmission problem?
In the automatic transmission problems list, gear shift lock is by far the most dangerous. Vehicle goes into the first gear but refuses to shift into another gear. This could be caused by the transmission shift solenoid.
When to get help for an automatic transmission problem?
If you are already feeling pretty jarring sensations when the car shifts, it’s time to get it in have us look at it. Normally when automatic transmissions have damaged gears they progressively get worse. Summary: This is a more serious problem and time is very important. Be sure to get your car to a qualified automatic transmission specialist soon.
What does the automatic transmission / automatic gearbox light do?
If the computer detects any abnormal readings from the sensors, a code will be stored and the automatic transmission indicator light will turn on to alert the driver of possible issues. Malfunctioning sensors will also give false readings causing the light to come on so always have the sensors tested again.