Toyota Tundra Troubleshooting: What to Do When Your Transmission is Slipping?

The Toyota Tundra has faced numerous challenges with its transmission system ever since the release of its second-generation model in 2007. Many Tundra owners have reported experiencing hesitation when shifting gears in their automatic transmission. (If you're curious about other types of transmissions, click here for information on sequential manual transmissions and continuously variable transmissions.)

tundra transmission
If you're encountering similar issues with your Tundra, consider the following steps:

Transmission Fluid

Are you noticing sluggish or hesitant gear changes from your automatic transmission? Do the RPMs rise before the transmission shifts to the next gear? The first step is to check the transmission fluid level and its condition. Toyota recommends maintaining the correct fluid level for smooth transmission operation. Transmission fluid serves to cool and lubricate the transmission, making it just as important as engine oil. Without proper fluid, excessive heat can lead to transmission failure.

To address potential fluid issues:

  • On older model Tundras, there's a dipstick for checking the transmission fluid level. If the fluid is low, top it up. If it appears discolored (fresh fluid is typically red) or smells burnt, it’s likely time for a transmission flush.
  • Newer models don’t have a dipstick due to their sealed transmissions. Contact your dealership to arrange for them to check and flush the transmission fluid once it reaches the appropriate temperature. Only a specific fluid, Toyota AT WS, should be used, which can only be obtained through a dealer. While Toyota claims the new automatic transmission doesn’t require servicing until 100,000 miles, many owners find this timeline inaccurate. Any transmission-related issues should be addressed by a professional to prevent severe damage and to ensure any applicable Technical Service Bulletins are applied to your vehicle.

Important Note: Avoid letting places like Jiffy Lube handle your Tundra’s transmission. Toyota has a precise method for refilling the transmission fluid, and they explicitly advise against flushing the transmission—only draining and refilling is recommended.

Torque Converter

  • The design of the torque converter can make it difficult for it to disengage after a gear shift, leading to a sensation of shuddering and jerky transmission behavior.
  • This problem has been acknowledged by Toyota through a Technical Service Bulletin. Notify your dealer about this issue immediately so they can assess whether the component needs replacement.

Looking Ahead

  • If you're still experiencing issues after addressing the above points, it would be wise to consult with a dealer to identify any other potential problems, particularly if you're seeing a check engine light or feeling unusual vibrations and noises.
  • Stay informed about Toyota’s Technical Service Bulletins. Toyota and its dealerships have been proactive in addressing issues related to the Tundra and will work with you to resolve any concerns.

For those interested in related topics, here are some additional articles you might find useful:

Remember, maintaining your vehicle properly can help prevent costly repairs down the road. Stay proactive and keep an eye on your vehicle’s performance to ensure a smooth driving experience.

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