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Confirmation Test (Road Test)

WARNING: This page is about a different car, the 2003 Lexus ES 300 and 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect the SET switch. See Fig 1. Push the main switch ON. Drive at a desired speed (25 mph (40 km/h) or higher). Press the control switch to the SET/COAST. After releasing the switch, check that the vehicle cruises at the desired speed.
  2. Inspect the ACCEL switch. Push the main switch ON. Drive at a desired speed (25 mph (40 km/h) or higher). Check that the vehicle speed increases while the control switch is turned to RES/ACC and that the vehicle cruises at the set speed when the switch is released. Momentarily press the control switch upward in the RES/ACC and then immediately release it. Check that the vehicle speed increases by about 1 mph (1.6 km/h) in the tap-up function.
  3. Inspect the COAST switch. Push the main switch ON. Drive at a desired speed (25 mph (40 km/h) or higher). Check that the vehicle speed decreases while the control switch is turned to SET/COAST and the vehicle cruises at the set speed when the switch is released. Momentarily press the control switch is turned to SET/COAST and then immediately release it. Check that the vehicle speed decreases by about 1 mph (1.6 km/h) in the tap-down function.
  4. Inspect the CANCEL switch. Push the main switch ON. Drive at a desired speed (25 mph (40 km/h) or higher). When operating one of the following, check that the cruise control system is cancelled and that the normal driving mode is reset.
    • Depress the brake pedal.
    • Shift to except D position (A/T).
    • Push the main switch OFF.
    • Pull the cruise control switch to CANCEL.
  5. Inspect the RESUME switch. Push the main switch ON. Drive at a desired speed (25 mph (40 km/h) or higher). When operating one of the following, check that the cruise control system is cancelled and that normal driving mode is reset.
    • Depress the brake pedal.
    • Shift to except D position (A/T).
    • Pull the cruise control switch to CANCEL.
    After the control switch is turned to RES/ACC at the driving speed of more than 25 mph (40 km/h), check that the vehicle restores the speed prior to the cancellation.
Fig 1: Inspecting Cruise Control Switch Operation
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