The following may indicate that your vehicle is overheating.
Correction procedures
1. Stop the vehicle in a safe place and turn off the air conditioning system, and then stop the engine.
2. If you see steam: Carefully lift the hood after the steam subsides.
If you do not see steam: Carefully lift the hood.
3. After the engine has cooled down sufficiently, inspect the hoses and radiator core (radiator) for any leaks.
If a large amount of coolant leaks, immediately contact your Toyota dealer.

4. The coolant level is satisfactory if it is between the "FULL" and "LOW" lines on the reservoir.

5. Add coolant if necessary.
Water can be used in an emergency if coolant is unavailable.

6. Start the engine and turn the air conditioning system on to check that the radiator cooling fan operates and to check for coolant leaks from the radiator or hoses.
The fan operates when the air conditioning system is turned on immediately after a cold start. Confirm that the fan is operating by checking the fan sound and air flow. If it is difficult to check these, turn the air conditioning system on and off repeatedly.
(The fan may not operate in freezing temperatures.)
7. If the fan is not operating: Stop the engine immediately and contact your Toyota dealer.
If the fan is operating: Have the vehicle inspected at the nearest Toyota dealer.
■When inspecting under the hood of your vehicle Observe the following precautions.
Failure to do so may result in serious injury such as burns.
High temperature steam or coolant could spray out.
■When adding coolant Add coolant slowly after the engine has cooled down sufficiently. Adding cool coolant to a hot engine too quickly can cause damage to the engine.
■To prevent damage to the cooling system Observe the following precautions:
If the vehicle battery is discharged
If the vehicle becomes stuckToyota CH-R Service Manual > Meter / Gauge System: Washer Fluid Level Warning Switch Circuit
DESCRIPTION
The combination meter assembly and level warning switch assembly are connected
via direct line. The combination meter assembly determines the washer fluid level
and outputs warning messages according to the washer fluid level warning switch
ON/OFF signal.
WIRING DIAGRAM
CAUTIO ...
Toyota CH-R Service Manual > Tire Pressure Warning System: Tire Pressure Monitor ECU Communication Stop (C2179/79)
DESCRIPTION
The main body ECU (multiplex network body ECU) sends signals to the tire pressure
warning ECU and receiver via a direct line.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
Note
C2179/79
T ...