4WD Control System: Overview Hyundai Santa Fe II facelift

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Description

Four Wheel Drive (4WD) transfer mode selection

1. AUTO MODE: CAUTION: When driving in 4WD AUTO mode, the vehicle operates similar to conventional 2WD vehicles under normal operating conditions. However, if the system determines that there is a need for the 4WD mode, the engine's driving power is distributed to all four wheels automatically without driver intervention. When driving on normal roads and pavement, the vehicle moves similar to conventional 2WD vehicles.
2. LOCK MODE: CAUTION: This mode is used for climbing or descending sharp grades, off-road driving, driving on sandy and muddy roads, etc., to maximize traction. This mode automatically begins to deactivate at speeds above 30 km/h (19 mph) and is shifted to 4WD AUTO mode at speed above 40 km/h (25 mph). If the vehicle speed decelerates to below 30 km/h (19 mph), however, the transfer mode is shifted into 4WD LOCK mode again.

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1. Remove the 4WD ECU (C) after removing the nut (A-2ea) and the connector (B). Tightening torque: 9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)