How to Fix Heater blowing Cold - 2004 - 2009 Prius Error codes P1116 and P1150
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How to Fix Heater blowing
How to Fix Heater blowing Cold - 2004 - 2009 Prius Error codes P1116 and P1150
This is a step by step Diagnosis and how to fix and reset No Heat/Heater blowing Cold Air in 2004 to 2009 Toyota Prius.
If you get the error codes P1116 and P1150 together with your heater blowing cold, please watch the video to the end.
2004 2005 2006 2007 2008 2009 Toyota Prius Gen 2 Gen II heater problem
If you drain the coolant, whether for scheduled maintenance or if you have had to replace components such as radiator, hoses and pumps, refilling the coolant is only the initial stage of the process. The next step is to bleed or burp the cooling system to get rid of the present of the air pockets.
"Burping" the cooling system in your Toyota refers to bleeding the cooling system and is necessary if air has entered the system. Air in the cooling system causes hot spots and subsequently overheating and serious engine damage. Failure to bleed trapped air will result in the dreaded triangle of death followed by temperature icon on the instrument cluster display. There might, however, not be any CEL Check Engine Light or error codes.
Other than the triangle of death icon followed by temperature icon, symptoms of air bubbles in the system are as follows: When you turned the car on, and/or while driving you can hear the sound of water travelling in the engine compartment into the heater core inside the cabin. You'll hear "gurgling" , "wooshing", or "swishing" sound coming from the middle of the dashboard inside the car, which means there's trapped air inside the heater core.
Burping or bleeding trapped air is require some patience because Gen 2 Toyota Prius Internal Combustion Engine (ICE) cooling system has a Coolant Heat Recovery Storage Tank Canister (CHRS). So before you can get ride of air inside the heater core, you must first get rid of the air inside the CHRS.
Air pockets inside the CHRS can be removed by activating its pump using relay to force coolant into Heat Storage Tank thereby removing any trapped air there. CHRS rarely malfunctions, but its pump may, and you might get DTC P1151 if the water sender temperature sensor malfunction.
After CHRS has been bled, the next step is to remove trapped air (or air pockets) inside the heater core. This process involved turning the engine on without driving it (putting in in test / maintenance / inspection / diagnostic mode), turning the heat to max allows the radiator fluid to circulate through the cooling system to ensure that all air bubbles are eliminated from the system. Remove the radiator cap, insert a large funnel (If you have) into the neck and the fill with coolant. If you do not follow the steps in this video. After the engine has reached operating temperature and the thermostat opens, open the bleeder valve and squeeze the upper and lower radiator hoses. This is what this video is all about. In this video I also showed how to do it even if you do not have a funnel.
As part of this video, I also show you how to idle the engine / keep the engine running continuously.
Keep in mind that the Internal Combustion Engine (ICE) cooling system is separate and independent of the hybrid inverter cooling system, I also show how to bleed the inverter coolant, in this video.
The ICE cooling system uses the same type of coolant as the inverter cooling system. Gen 2 was factory filled with Toyota Super Long Life Coolant (SLLC). SLLC pink is premixed, eliminating the hassle of mixing and the potential for error. Toyota Super LongLife Coolant (pink) is just regular ethylene glycol silicate-free premixed Phosphate-based Hybrid Organic Acid Technology (HOAT / OAT). It is Silicate, Amine & Borate free. This genuine OEM manufacturer recommended coolant from Toyota dealership is rather expensive. Alternatives such as Zerex Asian, Pentosin Pentofrost A4 or other HOAT/OAT red/pink Super Extended Life coolant from Valvoline, Peak, Prestone etc., available at your local auto parts stores such as Advanced Auto Parts, AutoZone, O'Reilly, NAPA, PepBoys and even at Walmart - can also be considered.
Thanks for watching and please watch other DIY and auto repair, how to remove, install, replace, repair and fix it ideas, guide, tutorials, and tools review videos on this channel.
This is a step by step Diagnosis and how to fix and reset No Heat/Heater blowing Cold Air in 2004 to 2009 Toyota Prius.
If you get the error codes P1116 and P1150 together with your heater blowing cold, please watch the video to the end.
2004 2005 2006 2007 2008 2009 Toyota Prius Gen 2 Gen II heater problem
If you drain the coolant, whether for scheduled maintenance or if you have had to replace components such as radiator, hoses and pumps, refilling the coolant is only the initial stage of the process. The next step is to bleed or burp the cooling system to get rid of the present of the air pockets.
"Burping" the cooling system in your Toyota refers to bleeding the cooling system and is necessary if air has entered the system. Air in the cooling system causes hot spots and subsequently overheating and serious engine damage. Failure to bleed trapped air will result in the dreaded triangle of death followed by temperature icon on the instrument cluster display. There might, however, not be any CEL Check Engine Light or error codes.
Other than the triangle of death icon followed by temperature icon, symptoms of air bubbles in the system are as follows: When you turned the car on, and/or while driving you can hear the sound of water travelling in the engine compartment into the heater core inside the cabin. You'll hear "gurgling" , "wooshing", or "swishing" sound coming from the middle of the dashboard inside the car, which means there's trapped air inside the heater core.
Burping or bleeding trapped air is require some patience because Gen 2 Toyota Prius Internal Combustion Engine (ICE) cooling system has a Coolant Heat Recovery Storage Tank Canister (CHRS). So before you can get ride of air inside the heater core, you must first get rid of the air inside the CHRS.
Air pockets inside the CHRS can be removed by activating its pump using relay to force coolant into Heat Storage Tank thereby removing any trapped air there. CHRS rarely malfunctions, but its pump may, and you might get DTC P1151 if the water sender temperature sensor malfunction.
After CHRS has been bled, the next step is to remove trapped air (or air pockets) inside the heater core. This process involved turning the engine on without driving it (putting in in test / maintenance / inspection / diagnostic mode), turning the heat to max allows the radiator fluid to circulate through the cooling system to ensure that all air bubbles are eliminated from the system. Remove the radiator cap, insert a large funnel (If you have) into the neck and the fill with coolant. If you do not follow the steps in this video. After the engine has reached operating temperature and the thermostat opens, open the bleeder valve and squeeze the upper and lower radiator hoses. This is what this video is all about. In this video I also showed how to do it even if you do not have a funnel.
As part of this video, I also show you how to idle the engine / keep the engine running continuously.
Keep in mind that the Internal Combustion Engine (ICE) cooling system is separate and independent of the hybrid inverter cooling system, I also show how to bleed the inverter coolant, in this video.
The ICE cooling system uses the same type of coolant as the inverter cooling system. Gen 2 was factory filled with Toyota Super Long Life Coolant (SLLC). SLLC pink is premixed, eliminating the hassle of mixing and the potential for error. Toyota Super LongLife Coolant (pink) is just regular ethylene glycol silicate-free premixed Phosphate-based Hybrid Organic Acid Technology (HOAT / OAT). It is Silicate, Amine & Borate free. This genuine OEM manufacturer recommended coolant from Toyota dealership is rather expensive. Alternatives such as Zerex Asian, Pentosin Pentofrost A4 or other HOAT/OAT red/pink Super Extended Life coolant from Valvoline, Peak, Prestone etc., available at your local auto parts stores such as Advanced Auto Parts, AutoZone, O'Reilly, NAPA, PepBoys and even at Walmart - can also be considered.
Thanks for watching and please watch other DIY and auto repair, how to remove, install, replace, repair and fix it ideas, guide, tutorials, and tools review videos on this channel.
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