how long can the battery be disconnected before losing presets?

Keith Jahnke

Asked by Oct 31, 2015 at 05:22 PM about the 2007 Toyota 4Runner V-8 4x4 Sport Edition

Question type: Maintenance & Repair

want to replace battery and do not want to lose pre-sets.

2 Answers


As soon as the negative (-) battery cable is disconnected. But you can buy a memory saver device that plugs into the lighter or power port to save the radio presets and clock. We have them at NAPA. I'm sure other stores sell them as well. HTH. -Jim


Sometimes my car will hold the settings for a few seconds but buy a device that allows you to hook up a 9v battery to your cigarette lighter.

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