SFI System: Precaution: Precaution

WARNING: This page is about a different car, the 2011 Lexus IS 350C. However, it is still accessible from the selected car via links, so may be relevant.

INITIALIZATION
NOTE:
Perform the Registration (VIN registration) when replacing the ECM. Refer to REGISTRATION .

HINT:

Reset memory or initialization cannot be completed by only disconnecting and reconnecting the cable of the negative (-) battery terminal.
FOR USING TECHSTREAM
WARNING:
Observe the following items for safety reasons:
- Before using the Techstream, read the instruction manual.
- Prevent the Techstream cable from being caught on the pedals, shift lever or steering wheel when driving with the Techstream connected to the vehicle.
- When driving the vehicle for testing purposes using the Techstream, 2 persons are required. One is for driving the vehicle, and the other operates the Techstream.

DISCONNECTING AND RECONNECTING NEGATIVE BATTERY CABLE

Fig 1: Disconnecting Battery Cable

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Before performing work on electronic components, disconnect the cable from the negative (-) battery terminal to prevent damage to the electrical system or electrical components.

TEXT IN ILLUSTRATION

*1	Negative (-) Battery Terminal
*2	Cable

Before disconnecting and reconnecting the battery cable, turn the engine switch off and the headlight switch off. Then loosen the terminal nut completely. Do not damage the cable or terminal.
When the battery cable is disconnected, the clock and radio settings and stored DTCs are cleared. Therefore, before disconnecting the battery cable, make a note of them.
NOTE:
When disconnecting and reconnecting the cable of the negative (-) battery terminal, the cowl top ventilator louver must also be removed and installed. Be sure to install the cowl top ventilator louver properly. If it is not installed properly, water may enter the engine compartment and cause malfunctions.