LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> GS 450h >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Cruise Control >> Cruise Control System >> Road Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Road Test

  1. INSPECT SET SWITCH 
    1. Push the main switch ON.
    2. Drive at a desired speed (40 km/h (25 mph) or higher).
      Fig 1: Pushing Main Switch ON
      G04951376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Press the control switch to SET / COAST.
    4. After releasing the switch, check that the vehicle cruises at the desired speed.
      Fig 2: Pressing Control Switch To SET / COAST
      G04951377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT "+" SWITCH 
    1. Push the main switch button ON.
    2. Drive at a desired speed (40 km/h (25 mph) or higher).
      Fig 3: Pushing Main Switch Button ON
      G04951376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Press the control switch to SET / COAST.
    4. Check that the vehicle speed increases while the control switch is pressed to RES / ACC, and that the vehicle cruises at the set speed when the switch is released.
      Fig 4: Pressing Control Switch To SET / COAST
      G04951377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Momentarily press the control switch to RES / ACC and then immediately release it. Check that the vehicle speed increases by about 1.6 km/h (1 mph) (Tap-up function).
      Fig 5: Pressing Control Switch To RES / ACC
      G04951380Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT "-" SWITCH 
    1. Push the main switch button ON.
    2. Drive at a desired speed (40 km/h (25 mph) or higher).
      Fig 6: Pushing Main Switch Button ON
      G04951376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Press the control switch to SET / COAST.
    4. Check that the vehicle speed decreases while the control switch is pressed to SET / COAST, and the vehicle cruises at the set speed when the switch is released.
    5. Momentarily press the control switch to SET / COAST, and then immediately release it. Check that the vehicle speed decreases by about 1.6 km/h (1 mph) (Tap-down function).
      Fig 7: Pressing Control Switch To SET / COAST
      G04951377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT CANCEL SWITCH 
    1. Push the main switch button ON.
    2. Drive at a desired speed (40 km/h (25 mph) or higher).
      Fig 8: Pushing Main Switch Button ON
      G04951376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Press the control switch to SET / COAST.
      Fig 9: Pressing Control Switch To SET / COAST
      G04951377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. When operating one of the following, check that the cruise control system is canceled.
      • Depressing the brake pedal
      • Pushing the cruise control main switch OFF
      • Pulling the cruise control switch to CANCEL
      • Moving the shift lever to any position except D (6t, 5th, and 4th gears)
        Fig 10: Checking Cruise Control System
        G04951387Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT RES (RESUME) SWITCH 
    1. Push the main switch button ON.
    2. Drive at a desired speed (40 km/h (25 mph) or higher).
      Fig 11: Pushing Main Switch Button ON
      G04951376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Press the control switch to SET / COAST.
      Fig 12: Pressing Control Switch To SET / COAST
      G04951377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. When operating one of the following, check that the cruise control system is canceled.
      • Depressing the brake pedal
      • Pulling the cruise control switch to CANCEL
      • Moving the shift lever to any position except D (6t, 5th, and 4th gears)
        Fig 13: Checking Cruise Control System
        G04951387Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Press the control switch to RES / ACC at a driving speed of more than 40 km/h (25 mph), check that the vehicle restores the speed before the cancellation.
    Fig 14: Pressing Control Switch To RES / ACC
    G04951380Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002