How to Reset Check Engine Lights on Toyota Tundra

by Katebo

Your Toyota Tundra is equipped with an On-Board Diagnostics (OBD) computer system that reads trouble codes from sensors positioned throughout the vehicle. When the computer receives a trouble code pertaining to the engine, the check engine light will illuminate. If you take your Tundra to an auto parts store they can read the code for you for free using a special scanner. After you know what the problem is, take the vehicle to a qualified mechanic to have any necessary repairs made. Then you can manually reset the check engine light yourself at home.

Use OBD Code Scanner

Step 1

Find a port under the steering column that is the same size and shape as the connector on the OBD code scanner. Plug the scanner into the port.

Step 2

Put the key into the ignition and turn it to the "on" position. Wait while the code scanner reads the trouble codes.

Step 3

Find the "Delete" button on the faceplate of the scanner and press it. If there is no delete button, scroll through the menu options on the scanner using the arrow keys and select "Erase Codes." The check engine light will shut off.

Disconnect Battery

Step 1

Pop the hood of your Toyota and find the battery. Locate the negative terminal, which has a black cable and a negative sign on top of it.

Step 2

Loosen the nut attached to the negative battery cable clamp using pliers. Lift the clamp off the battery.

Step 3

Wait about 10 minutes. Reconnect the negative battery cable clamp to the negative terminal of the battery. Tighten the nut with pliers.

Step 4

Put the key into the ignition and start the engine of your Tundra. Look on the instrument panel to make sure the check engine light has turned off.

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