Vehicle cooling and heating Toyota Highlander 1 (XU20)

General information about the cooling and heating system
Engine cooling system All vehicles covered by this manual use a sealed engine cooling system with thermostatically controlled coolant circulation (Fig. 1.1). Coolant is circulated through the engine by a centrifugal...

Antifreeze — General Information
Warning! Do not allow antifreeze to come into contact with your skin or paintwork. Wash away splashes immediately with plenty of water. Do not leave coolant in open containers or puddles where children and pets can...

Thermostat — Checking and Replacing
Caution: Do not attempt to remove the radiator cap, drain the coolant, or remove the thermostat until the engine has cooled completely. General check 1. Before blaming the thermostat for problems in the slavery of the...

Engine cooling fans — removal and installation
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...

Radiator and expansion tank — removal and installation
Caution: 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...

Coolant pump — check
1. A faulty coolant pump can cause serious engine damage due to engine overheating. 2. There is a vent hole in the coolant pump. If the pump seal fails, coolant will leak out of this hole. In most cases, you will need a...

Coolant pump — removal and installation
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...

Coolant Temperature Gauge — Checking
Caution: Wait until the engine has cooled down completely before starting this procedure. 1. The coolant temperature gauge system consists of a temperature gauge on the instrument panel and a sensor mounted on the...

Electric blower fan — removal and installation
Warning! The models described in this manual are equipped with a Supplemental Restraint System (SPS), commonly known as the air bag system. To prevent accidental air bag deployment, which could result in injury, be sure...

Heater and air conditioner control unit — removal and installation
Warning! The models covered by this manual are equipped with a Supplemental Restraint System (SRS), commonly known as the "airbag system". To prevent accidental airbag deployment, which could result in injury, be sure...

Heater radiator — removal and installation
Front heater radiator Warning! The models covered by this manual are equipped with a Supplemental Restraint System (SRS), commonly known as the air bag system. To prevent accidental air bag deployment, which could...

Air conditioning and heating system — inspection and maintenance
Air conditioning system Caution! The air conditioning system is constantly under high pressure. Never disconnect refrigerant lines or remove system components without first draining the refrigerant from the system. The...

Air Conditioner Receiver-Dryer — Removal and Installation
Caution! The air conditioning system is constantly under high pressure. Never disconnect refrigerant lines or remove system components without first draining the refrigerant from the system. The draining of refrigerant...

Air Conditioning Compressor — Removal and Installation
Caution! The air conditioning system is constantly under high pressure. Never disconnect refrigerant lines or remove system components without first releasing the refrigerant from the system. Releasing refrigerant from...

Air Conditioner Condenser — Removal and Installation
Caution. The air conditioning system is constantly under high pressure. Never disconnect refrigerant lines or remove system components without first draining the refrigerant from the system. The refrigerant must be...

Cooling and Heating System Specifications
General information Radiator cap opening pressure - 93...122 kPa Thermostat characteristics Opening start - 80...84°C Full opening - 95°C Tightening torques of threaded connections Nm (unless otherwise stated) Radiator...

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