Symptoms of low transmission fluid. When the fluid in your transmission gets too low, numerous problems can occur. Since the fluid in the transmission is responsible for lubricating the transmission, powering the transmission and cooling the transmission, you can run into situations where the fluid overheats because there is not enough of it. The vehicle will not move because there's not enough fluid to propel it, or the vehicle vehicle will start to see failures internally such as bearing failures and gear set failures because it has insufficient lubrication. What this means to the driver is that the vehicle will either fail to move on its own. If you are going up or down a severe incline or going around a sharp corner, you might find the the vehicle stops moving because the fluid has sloshed away from the pickup tube. You might notice the fluid itself is getting burnt because it's getting too hot and causing too much friction in the transmission or ultimately may no longer be driveable because the fluid is too low. It is always a good idea to check your fluid on a regular basis. The fluid needs to be hot and the vehicle needs to be running in order to get an accurate measurement. And you can consult your owners manual to get details on this. And you want to be very careful when you add fluid that it is clean because the slightest contaminant in transmission fluid can cause other problems such as debris in the valve body.