Keeping your car running smoothly isn’t just about changing the oil — the transmission fluid plays a major role too. If you’ve ever wondered how to check transmission fluid or noticed rough shifting, it’s time to learn how to properly inspect and maintain it. In this guide, we’ll walk you through how to check transmission fluid correctly, whether your car has a dipstick or not.
Why Checking Transmission Fluid Is Important
Your vehicle’s transmission fluid lubricates the gears, cools the transmission system, and ensures smooth shifting. When it runs low or becomes dirty, you may experience delayed gear changes, slipping, or even transmission damage. Learning how to check transmission fluid level helps you catch issues early and avoid costly repairs.
What You Need Before Checking Transmission Fluid
Before diving into how to check your transmission fluid, make sure you have a few things ready:
- Clean rag or paper towels
- Funnel (for adding fluid if needed)
- Owner’s manual (to find fluid type and dipstick location)
- Gloves (optional but recommended)
Once you’re prepared, let’s get into how to check automatic transmission fluid step-by-step.
Step 1: Warm Up the Engine
To get an accurate reading, your car should be warm. Turn on the engine and run it for five to ten minutes. As a result, the transmission fluid can circulate and return to its typical working temperature. Some vehicles require the engine to stay running while checking; others need it off — your owner’s manual will specify.
Step 2: Park on a Level Surface
Apply the parking brake after parking your car on a level surface. This step ensures the reading is precise. If you’re learning how to check transmission fluid levels, remember that even a small incline can give a false reading.
Step 3: Locate the Transmission Dipstick
In most cars, especially those with automatic transmissions, there’s a transmission dipstick similar to the one used for engine oil. It’s typically located near the back of the engine bay. Your manual will help you find it.
If you’re unsure how to check transmission fluid dipstick, look for a handle labeled “Transmission” or a red/yellow ring.
Tip: Some modern cars don’t have a dipstick — don’t worry, we’ll cover how to check transmission fluid without dipstick below.
Step 4: Remove and Clean the Dipstick
Pull out the transmission fluid dipstick and wipe it clean with a rag or paper towel. Reinsert it fully, then pull it out again to check the fluid level. You’ll see markings such as “Full” and “Low” or “Hot” and “Cold.”
Step 5: Inspect Fluid Level and Color
Now that you know how to check automatic transmission fluid level, take a close look at the fluid:
- Color: Fresh transmission fluid is pink or red. Dark brown or burnt-smelling fluid means it’s time for a change.
- Level: The fluid should be between the “Full” and “Low” marks. If it’s below the minimum line, you’ll need to add more.
Step 6: Add Fluid If Necessary
If you’re wondering how to properly check transmission fluid, always ensure your car’s in the correct gear (usually “Park” for automatics) and that the dipstick is clean before checking.
If the fluid level is low, use a funnel to pour the recommended transmission fluid type into the dipstick tube. Add small amounts and recheck frequently — overfilling can be just as harmful as running low.
How to Check Transmission Fluid Without a Dipstick
Many modern vehicles, especially newer automatic models, don’t have a dipstick. So how to check your automatic transmission fluid in these cases?
- Lift the vehicle using a jack and secure it on stands.
- Locate the transmission fill plug underneath the car (refer to the manual).
- With the engine running and transmission warm, remove the plug carefully.
- If fluid seeps slightly from the hole, it’s at the correct level. If not, add more until it does.
This process can be tricky, so if you’re not confident, visit a professional mechanic.
Signs You Should Check Your Transmission Fluid
Even if you’re familiar with how to check my transmission fluid, here are some warning signs that it’s time to do so right away:
- Difficulty shifting gears
- Slipping or jerky movements when driving
- Unusual noises during gear changes
- Transmission overheating
- Leaking red fluid under the car
Regularly checking your fluid prevents these problems and extends the lifespan of your transmission.
How Often Should You Check Transmission Fluid?
Experts recommend checking your transmission fluid level every month or at least every 5,000–10,000 miles. If you drive in heavy traffic, tow frequently, or live in hot climates, you should check it more often. Staying proactive about how to check transmission fluid levels ensures your transmission stays healthy for years.
Final Thoughts
Knowing how to check transmission fluid is a simple but vital part of vehicle maintenance. Whether you’re checking with a dipstick or without one, keeping your transmission fluid at the right level and in good condition helps your car perform smoothly and last longer.
If you’re unsure or uncomfortable doing it yourself, have a mechanic check it during your next service. But remember — the more you know about how to properly check transmission fluid, the better you can care for your vehicle.
