To update the navigation system on Your 2008 Toyota Avalon You will need a computer. Insert the SD card from Your vehicle into Your computer. Open the Map Update Toolbox from Your Applications folder. If an update is available, a button prompting to Download Latest Content will display. Select DOWNLOAD LATEST CONTENT to begin the process. Once completed, the toolbox will display SD Card is up-to-date. Select EXIT TOOLBOX. Properly eject the SD card from Your computer. Once removed, insert it back into Your vehicle. Having access to the most current maps will allow You to use Your navigation system more conveniently and accurately.
Steven T.
April 9, 2020
You can update your 2008 toyota avalon navigation system via an sd card. Login to your toyota account to download the update.
Jafo
December 28, 2022
Thereatr 3 different nav systemsfor the 2008 Toyota Avalon. It wasa changeover year so thete are 3 b*****d dash configurations.
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