Cooling System Bleeding for MKV Supra

phm14

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Is there a special procedure for bleeding the 3 radiator system? Possibly in the service manual? Is the layout different to the Z4?
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A90313

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Yes,
open bleeder on overflow
fill overflow to top
close bleeder and replace overflow cap
close hood, make sure car is on ground (not on lift or jacks), apply parking brake
put car in diag mode (ht start button 3 times)
turn on low beam lights, and hazard lights
put heater control on max hot, blower on lowest
hold gas pedal down for 10 seconds (dont step on brake)
release gas pedal and start engine
instrument cluster displays message about service function starting
engine will rev up on its own for 11 minutes then return to idle
let engine cool all the way back off and check overflow tank
 

A90313

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One thing to be sure of. There are 2 separate cooling systems. Bleed procedure is different for each system. If you drain them both out do the low temp first. Then the high temp.
 

R0ME0

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One thing to be sure of. There are 2 separate cooling systems. Bleed procedure is different for each system. If you drain them both out do the low temp first. Then the high temp.
Did you have to step on the brake after letting off the gas pedal for 10 seconds in order to start the car? I followed the procedure to the T But canā€™t get the car to start after letting off the gas pedal for 19 seconds
 

A90313

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Is there a special procedure for bleeding the 3 radiator system? Possibly in the service manual? Is the layout different to the Z4?
Did you have to step on the brake after letting off the gas pedal for 10 seconds in order to start the car? I followed the procedure to the T But canā€™t get the car to start after letting off the gas pedal for 19 seconds
Yes. Step on brake and start car at the end
 

850_Supra

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Is the low temp just turn the temp to lowest setting? Canā€™t seem to get it to go into service in low temp
 

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Bump? The instructions were unclear if its low or high. How to enter high bleeding service function?
 
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If you donā€™t see the ā€œservice function startedā€ message you did not do the procedure correctly. The car will occasionally rev to around 3000 RPMs if you donā€™t have the revving, you didnā€™t do it right.
 
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And this is the message you get when the ā€œService Function is Completeā€. Note that at about 5 mins, the check engine light comes on. When you restart, it goes away.
BE034FE2-79A0-4D6D-98A0-6652F39CA3AF.jpeg
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