Warning! Wait until the engine has cooled down completely before starting this procedure. Avoid contact of antifreeze with skin or paintwork. Wash off splashes immediately with plenty of water. Do not leave coolant in open containers or puddles where children and pets can get to it. The pleasant smell of this substance may attract their attention, but getting it inside can lead to death! Immediately clean up spilled antifreeze from the garage floor. Keep containers with antifreeze closed and eliminate leaks in the cooling system immediately upon detection. Dispose of used antifreeze in accordance with local rules and regulations. Never pour used antifreeze onto the ground or into a drain.
Warning! The models described in this manual are equipped with a Supplemental Restraint System (SPS), commonly known as the "airbag system". To prevent accidental deployment of the airbags, which could result in injury, be sure to disable the airbag system before working near the airbag components (see chapter 12).
Note: On most models, the manufacturer's procedure for removing the engine cooling fan involves removing the radiator and fan assembly and then separating them. It is possible to remove the engine cooling fans without removing the radiator.
1. Disconnect the ground cable from the battery (see paragraph 1 of chapter 5). Drain the coolant from the cooling system (see chapter 1), then disconnect the upper hose from the radiator.
2. On 2004 and later Lexus models, remove the air intake duct (see chapter 4), a plastic cover over the radiator support and a hood release latch (see chapter 11). Unscrew 6 bolts (two at each end and two in the middle) radiator supports and then remove the support.
3. Disconnect the electrical connections of both fan motors (fig. 4.3, a).
Application: On 2004 Lexus models, disconnect the electrical connectors from the electronic fan control module and all other electrical connectors on the fan shroud (fig. 4.3, b).
Fig. 4.3, a. Location of the engine cooling fan
1 - Fan motor electrical connectors
2 - Fan mounting elements (shown above, similar below)
Fig. 4.3, b. Disconnect the electrical connectors of the wiring harnesses on the fan shroud
4. Remove the fan/shroud mounting hardware from the radiator, remove any hoses or wiring harnesses that may be attached to it, and then remove it from the vehicle (fig. 4.3,8).
5. Hold the fan impeller and unscrew the fan mounting nut (Fig. 4.5).
Fig. 4.5. Remove the impeller from the electric motor
6. Unscrew the bolts and remove the fan motor from the casing (Fig. 4.6).
Fig. 4.6. Remove the screws and separate the electric motor from the casing
7. Installation is performed in the reverse order of removal. Tighten the radiator support mounting bolts to the specified torque specified in Specifications at the beginning of this chapter. Fill the cooling system (see chapter 1).
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