Meter / Gauge System: Precaution

WARNING: This page is about a different car, the 2006 Lexus IS 350 and 2006 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

REMOVAL AND INSTALLATION OF THE BATTERY TERMINAL

Before performing electrical work, disconnect the battery negative (-) terminal in order to prevent a short in the system.
When disconnecting and reconnecting the battery terminal, engine switch and lighting switches off and loosen the terminal nut completely. Perform these operations without prying on the terminal.
When the battery terminal is disconnected, the memories of the clock, radio, DTCs, etc. are erased. Before disconnecting the terminal, check and make a note of them.

Fig 1: Identifying Battery Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: When disconnecting the battery negative (-) terminal, initialize the following system after the terminal is reconnected.

SYSTEM NAME DESCRIPTION

System Name	See Procedure
Power Window Control System	INITIALIZATION