Lexus IS250 · Service Manual CRUISE CONTROL SYSTEM

FAIL-SAFE CHART

System information

HINT:
If the following conditions are detected while the cruise control is in operation, the system clears the stored vehicle speed in the ECM and cancels the cruise control operation.

Vehicle Condition
 Auto Cancel Condition
 Re-operation Condition
CRUISE main indicator light blinks
  1. There is open or short in stop light switch circuit
  2. There is problem with vehicle speed signal
  3. There is problem with throttle position sensor and motor
 Turn cruise control main switch on again
CRUISE main indicator light blinks
  1. There is problem with input circuit of stop light switch circuit
  2. There is problem with cancel circuit
  1. Turn cruise control main switch on again
  2. Turn engine switch off then on again
CRUISE main indicator light goes off
  1. Vehicle speed is lower than low speed limit (approx. 40 km/h (25 mph)) while running with cruise control on
 Push cruise control main switch to + (ACCEL)/RES (RESUME)
  1. Vehicle speed is lower than stored speed by approx. 16 km/h (9.9 mph) or more
 Push cruise control main switch to - (COAST)/SET
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