Transmission fluid expands in heat and in order to receive accurate results, it must be under normal operating conditions. If the fluid is checked when the engine is cold, you may get false results indicating the fluid is low. Allow the engine to continue running while you check the level.
Do you check transmission fluid with the car running?
Step 1: Leave the engine running and open the hood to your car. The car must be warm when you check transmission fluid. Step 2: If you have an inline engine, look behind your oil dipstick, toward your windshield, to locate the transmission fluid dipstick.
What are the symptoms of low transmission fluid?
Signs of Low Transmission Fluid
- Noises. If your transmission is working properly, you shouldn’t hear any noise while you’re driving as it should transition smoothly. …
- Burning Smell. Any foul smell coming from your car should direct you to your nearest service center. …
- Transmission Leaks. …
- Slipping Gears.
What is the proper way to check transmission fluid level?
Check the Level
With the engine warmed up, leave the car idling in park on a level surface. Pull out the dipstick, wipe it clean, replace it slowly, and then pull it back out. Check the fluid level—how high the fluid comes up on the dipstick—against the “full” and “low” or “fill” marks on the dipstick.
Can I check transmission fluid after driving?
WARNING: Checking the transmission fluid level requires working under the hood of your car with the engine running. … The easiest way to do this is to check the fluid level right after driving the car for a while. Hold your foot on the brake, and work the shifter slowly through the gears.
Can you add transmission fluid when car is hot?
Pull out the transmission fluid dipstick.
On most cars, the car must idling in park with the parking brake on and the transmission hot. … The fluid level should be between two marks labeled either “Full” and “Add” or “Hot” and “Cold.” Usually, you should not have to add transmission fluid.
How long should a car run before checking transmission fluid?
Let it run for about 5 minutes so that it can warm up. Some car manufacturers will recommend you turn the engine off before checking the transmission fluid, but most don’t recommend this.
Will a transmission slip if it’s low on fluid?
If your transmission fluid is old, contaminated, and/or too low, it will speed up that wear on tear on your gears. This can cause them to not engage properly, leading to a slipping transmission.
How long should I let my transmission warm up?
Start the engine, allow it to stabilize and idle for perhaps 15 seconds, shift into gear, wait a few seconds for the transmission to fully engage then drive the vehicle up to temperature gently.
How do you read a transmission cold hot dipstick?
Pull the dipstick out again and check the fluid level. If the engine is cool, it should be at the upper end of the “COLD” mark. If the engine is hot, the level should be at the upper end of the “HOT” mark. If it’s lower, you should add some amount of automatic transmission fluid.