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Cruise Control System: Precaution

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: When disconnecting the negative (-) battery terminal, initialize the following system after the terminal is reconnected.
SYSTEM NAME REFERENCE

System Name See procedure
Lighting System INITIALIZATION
Sliding Roof Control System INITIALIZATION
Power Window Control System INITIALIZATION
Power Door Lock Control System INITIALIZATION
Power Back Door Control System INITIALIZATION
Back Door Closer System INITIALIZATION
Electrical Back Door Outside Handle System INITIALIZATION
SFI System INITIALIZATION
  1. HANDLING PRECAUTION FOR CRUISE CONTROL SYSTEM 
    1. Turn the cruise control main switch OFF when not using the cruise control system.
    2. Be careful as the vehicle speed increases when driving downhill with the cruise control system on.
    3. The RESUME/ACCEL operation changes according to the cruise control system status. When the cruise control system is operating, ACCEL operates. When the cruise control system is not operating, RESUME operates.
    4. When the cruise control system is operating and the CRUISE main indicator light blinks, turn the cruise control main switch OFF to reset the cruise control system. After the reset, if the cruise control main switch cannot be turned ON, or the cruise control system is canceled immediately after turning the cruise control main switch ON, the system may have a malfunction.
    5. Do not use the cruise control system where the road conditions are as follows:
      • Heavy traffic
      • Steep downhill
      • Roads with sharp turns
      • Icy or snowy roads
      • Slippery roads