Coolant: Service and Repair

FA20 COOLING: COOLANT: REPLACEMENT; 2013 MY FR-S [03/2012 -]

1. DRAIN ENGINE COOLANT

NOTICE:
Do not remove the radiator cap, cylinder block drain cock plugs and radiator drain cock plug while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.

HINT
Collect the coolant in a container and dispose of it according to the local regulations.

(a) Remove the service hole cover from the front bumper under cover.





(b) Connect a hose with an inside diameter of 8 mm (0.315 in.) to the drain plug.

(c) Loosen the radiator drain cock plug.





(d) Remove the radiator cap and drain the coolant.

2. ADD ENGINE COOLANT

HINT
Before replenishing the coolant, turn the A/C switch off.

(a) Tighten the radiator drain cock plug.

(b) Pour in coolant of the specified density until it reaches the base of the entrance to the water inlet.

HINT
* The coolant contains anti-freeze and anti-rust agents for use with engines with aluminum cylinder blocks. Using other than the specified coolant may cause rust, so be sure to use Toyota SLLC 50 Blue.
* Crimp the inlet and outlet radiator hoses several times by hand, and add water if the water level in the entrance water inlet drops.
* The coolant quantity includes the quantity in the reserve tank.

(c) Open the air bleed plug on the heater hose side.





(d) If the water level in the entrance to the water inlet drops, pour coolant in until it reaches the base of the entrance to the water inlet.

(e) Close the air bleed plug when the coolant begins to come out of the air bleed valve on the heater hose side.

(f) Pour in coolant of the specified concentration until it reaches the "FULL" level of the radiator reserve tank.

(g) Close the radiator cap. [*1]

(h) Start the engine, race it 5 to 6 times at under 3000 rpm or less, and then stop the engine. [*2]

HINT
Finish this operation within 40 seconds.

(i) 1 minute after stopping the engine, remove the radiator cap and pour coolant in if the water level in the entrance to the water inlet has dropped. [*3]

(j) Repeat operations [*1], [*2], and [*3] until the water level in the entrance to the water inlet does not drop.

HINT
Perform before the engine warms up, as the air that comes out of the inlet radiator hose will travel to the radiator side when the engine warms up and the thermostat opens.

(k) Close the radiator cap and the radiator reserve tank cap.

(l) Start the engine, set the heater on full warm, and then run it with the blower speed set to "LO".

(m) Run the engine at 2000 rpm or less until the radiator fan starts and stops. [*4]

HINT
To prevent overheating, pay attention to the water temperature.

(n) Stop the engine and wait until the coolant temperature drops to 30 °C (86 °F) or less. [*5]

(o) Remove the radiator cap and, if the volume of coolant has dropped, pour coolant in until it reaches the base of the entrance to the water inlet and until it reaches the "FULL" level in the radiator reserve tank. [*6]

(p) Close the radiator cap. [*7]

(q) Set the heater to full warm, and, with the blower speed set to "LO", race the engine at 3000 rpm or less. [*8]

(r) At this point, if the engine coolant can be heard flowing in the heater core, repeat operations [*4], [*5], [*6], [*7], and [*8].

(s) When the water level no longer drops, adjust the water level so that the water level in the radiator reserve tank reaches the "FULL" line.





3. INSPECT FOR COOLANT LEAK Testing and Inspection