Hyundai Santa Fe: Automatic Transaxle Cooling System / ATF Warmer. Description and operation

Hyundai Santa Fe (TM) 2019-2025 Service Manual / Automatic Transaxle System (SBC) / Automatic Transaxle Cooling System / ATF Warmer. Description and operation

Description

The ATF warmer is mounted on the valve body cover to reduce oil viscosity friction by increasing oil temperature under cold condition, which in turn improves fuel efficiency. It is serial mounted on the entry of the Electronic Throttle Controller (ETC), as shown in the diagram, and minimizes the effects of cabin heating system.

•	Engine coolant is used for circulating heat in order to heat and cool the transaxle oil.

•	Rapidly elevates the transaxle oil temperature during the initial cold start of the engine.

•	Prevents over heating of the transaxle oil while the vehicle is moving.

•	Transaxle oil warm-up and cooling can be done with a single system.

•	The water coolant and oil are separate in order to exchange heat.

Oil Cooler. Repair procedures

Repair procedures • ATF cooler is a unit with the radiator, so refer to radiator removal/installation procedures in the engine section...

ATF Warmer. Repair procedures

Removal • Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift...

Other information:

Hyundai Santa Fe (TM) 2019-2025 Service Manual: Release residual pressure in fuel line

Release Residual Pressure in Fuel Line • There may be some residual pressure even after "Release Residual Pressure in Fuel Line" work, so cover the hose connection with a shop towel to prevent residual fuel from spilling out before disconnecting any fuel connection...

Hyundai Santa Fe (TM) 2019-2025 Owner's Manual: System settings

Setting functions for the system With the engine on, select ‘Driver Assistance → Driving Convenience → Auto Highway Speed Control (or Auto motorway speed control)’ from the Settings menu to turn on Navigationbased Smart Cruise Control and deselect to turn off the system...