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Do you check Acura transmission fluid with a car running?

To check the transmission fluid level in an Acura vehicle, it is recommended to do so with the engine running. This ensures an accurate reading of the fluid level and allows you to identify any potential issues with the transmission system.


Why Check Transmission Fluid with the Engine Running?


Checking the transmission fluid level with the engine running serves several important purposes:



  • Accurate Fluid Level Reading: The transmission fluid needs to be circulating and at operating temperature to get an accurate reading of the fluid level. With the engine running, the fluid is being pumped through the system, providing a more precise measurement.

  • Identifying Potential Issues: Checking the fluid level with the engine running can help detect any issues with the transmission, such as leaks or excessive fluid consumption. If the level is low or the fluid appears discolored or contaminated, it may indicate a problem that requires further investigation.

  • Following Manufacturer Recommendations: Acura and other automakers typically recommend checking the transmission fluid level with the engine running to ensure the most accurate and reliable results. Following the manufacturer's instructions helps maintain the vehicle's warranty and ensures proper maintenance.


By checking the transmission fluid level with the engine running, you can ensure the health and proper operation of your Acura's transmission system.


How to Check Acura Transmission Fluid with the Engine Running


To check the transmission fluid level in an Acura with the engine running, follow these steps:



  1. Park the vehicle on a level surface and apply the parking brake.

  2. Start the engine and let it run for a few minutes to allow the transmission fluid to reach operating temperature.

  3. Locate the transmission fluid dipstick, which is usually located near the front of the engine compartment.

  4. Carefully remove the dipstick and wipe it clean with a lint-free cloth.

  5. Reinsert the dipstick fully, then remove it again to check the fluid level.

  6. The fluid level should be within the "hot" range indicated on the dipstick. If the level is low, add the recommended transmission fluid until it reaches the proper level.

  7. If the fluid appears discolored, contaminated, or the level is significantly low, it may indicate a problem with the transmission that requires further diagnosis and repair.


Following these steps will help ensure your Acura's transmission fluid is at the correct level and in good condition, maintaining the health and performance of this critical component.

Am I supposed to check my transmission fluid with the car running?


Yes, for automatic transmissions, you should check the transmission fluid with the car running. It's crucial to let the engine warm up first, then shift through all the gears while keeping the brake pressed, and finally check the fluid level while the engine is in park or neutral. Checking while the engine is on ensures the fluid is circulating properly and the torque converter is full, giving a more accurate reading. 
This video demonstrates the importance of checking transmission fluid while the engine is running: 59sOBD InsightsYouTube · Sep 3, 2024
Why check with the engine running

  • Accurate reading: The fluid circulates through the transmission, including the torque converter, while the engine is running. This prevents a false high reading that can occur if the fluid has drained back into the pan when the engine is off. 
  • Hot fluid: Checking the fluid when the engine is warm gives the most accurate reading because transmission fluid expands as it heats up. Your dipstick often has separate "hot" and "cold" markings. 
  • Functionality: The engine needs to be running to activate the transmission and its internal parts, which is necessary for a proper check. 

How to check automatic transmission fluid
  1. Make sure the car is on a level surface and set the parking brake. 
  2. Start the engine and let it run until it reaches normal operating temperature. 
  3. Press the brake pedal and slowly shift the gear selector through all the gears (P, R, N, D, etc.), pausing for a few seconds in each. 
  4. Return the gear selector to the park (P) position. 
  5. Locate the transmission fluid dipstick, pull it out, and wipe it clean with a rag. 
  6. Re-insert the dipstick completely, then pull it out again to check the fluid level against the "hot" marks. 

You can watch this video for a step-by-step guide on checking transmission fluid: 52sJiffy LubeYouTube · Jun 29, 2015
Important considerations
  • Consult your owner's manual: The specific procedure can vary between vehicles. Some modern vehicles may not have a dipstick, or some may have different checking procedures. 
  • Manual transmissions: The procedure for checking manual transmission fluid is different and typically requires the engine to be off and the vehicle to be on a lift. 
  • Safety: Be careful when working around a running engine. Some sources recommend using wheel chocks for added safety. 



How to check transmission fluid on an Acura?


How to Check Your Transmission Fluid

  1. Let your engine run for 10 minutes before proceeding, the engine must be warm to get an accurate reading.
  2. Find the transmission fluid dipstick.
  3. Remove the dipstick and touch the fluid.
  4. Use a rag to wipe off the dipstick.
  5. Use a funnel to bring the fluid level up to the proper level.



How do you check the transmission fluid level on a 2017 Acura RDX?


Typically, it's located to the right of the oil dipstick on front-wheel-drive cars. Remove the dipstick and assess the fluid's condition by rubbing the fluid around between your thumb and forefinger. Transmission fluid should be nearly clear with a pink hue.



Does a Nissan have to be running to check transmission fluid?


First, put the gearshift in either neutral or park, leave your parking brake active, and turn on your engine. Your engine needs to be warm when checking your transmission fluid and should remain on during this process.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.