Hyundai Tucson (LM) 2010-2015 Owners Manual: Active ECO system
Active ECO operation
Active ECO helps improve fuel efficiency by controlling the engine and transaxle.
Fuel-efficiency is determined by the driver's driving habits and road conditions.
When the Active ECO button is pressed the ECO indicator (green) will illuminate
to show that the Active ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Troubleshooting
Trouble Symptom Charts
Trouble Symptom 1
Trouble Symptom 2
Trouble symptomProbable causeRemedyThe set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed sensor circuitRepair the veh ...