overcharging

(2003 2UZ-FE ROW LC100) Day 9 of a long road trip, this morning from a cold start the battery voltage around 13V and after ignition the voltmeter on the dash immideatly jumped to 16V then started increasing to 19V and can hear the fan blower motor begging for its life as well as the stereo...

This has been documented on a few other threads but I figured I would add a definitive OEM solution for this problem. Background: A few weeks ago my mother's 1998 LX470 started up with an illuminated battery light. I the volt-meter in the cluster read 18V+ so I used the spare tire kit (there's...