Toyota Highlander Service Manual: Cooling system (3MZ-FE)

Overhaul

1. REMOVE DRAIN PLUG (a) Remove the drain plug. (b) Remove the O-ring. 2. ASSEMBLE SST SST 09230-01010 (a) Install the claw to the overhaul handle, inserting it in the hole in part A as show ...

On-vehicle inspection

1. INSPECT COOLING SYSTEM FOR LEAKS (a) Remove the radiator cap. CAUTION: Do not remove the radiator cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam ...

More about Toyota Highlander:

If your vehicle overheats
The following may indicate that your vehicle is overheating. The needle of the engine coolant temperature gauge Enters the red zone or a loss of engine power is experienced. (For example, the vehicle speed does not increase.)  Steam comes out from under the hood. Correction proced ...