Quote:
Originally Posted by TexBiker
No...disconnecting the battery of your Tundra is harmless. It's a standard step when doing quite a few maintenance/installation procedures.
The first time you crank the vehicle after disconnecting the battery, it will die immediately. Crank it again and everything returns to normal.
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Don't forget to loosen the muffler bearing for about 5 minutes before you disconnect the negative battery cable!