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Symptom
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Diagnostic procedure
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Also check for
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Vehicle speed can be set, but there is no ACC indication on the MID
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Vehicle speed cannot be set when the SET switch is pressed (between 30 km/h (19 mph) and 180 km/h (112 mph))
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1.
2.
3.
4.
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Check for a short in the SCS line.
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Vehicle speed does not decelerate or accelerate accordingly when the set/resume switch is pressed
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Set speed does not cancel when the shift lever is in position N
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Test the transmission range switch:
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Set speed does not cancel when the brake pedal is pressed
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Set speed does not cancel when the adaptive cruise control (ACC) switch is turned off
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Set distance cannot be adjusted with the distance switch
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Vehicle speed can be set, but vehicle speed decelerates
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Faulty ETCS
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Senses a vehicle driving in another lane
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Does not sense the vehicle driving ahead
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Intermittently senses the vehicle driving ahead
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Adaptive cruise control (ACC) indicator (orange) does not come on
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Adaptive cruise control (ACC) indicator (orange) does not go off
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Adaptive cruise control (ACC) activation indicator (green) does not come on
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Adaptive cruise control (ACC) activation indicator (green) does not go off
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HDS does not communicate with the adaptive cruise control (ACC) unit or the vehicle
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