Charging System: Precaution

WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

Check that the battery cables are connected to the correct terminals.
Disconnect the battery cables when the battery is given a quick charge.
Do not perform tests with a high voltage insulation resistance tester.
Never disconnect the battery while the engine is running.