Having problems with overheating - Toyota Yaris Forums

ryker · 07-30-2007, 06:38 PM

My wife drove our 2007 Yaris on a 3 hour trip in approx 80 degree weather with the ac on. When she had to idle in traffic due to road construction she shut off the ac and in a few minutes the overheat light came on. She turned on the heat and blower which caused the light to eventually shut off. She pulled over and checked the coolant and it was fine. She also says that the ac doesn't work if the car is running and in park, didn't know if it was supposed to do that or not. Anyone else have some overheating problems? I got 27,000 miles on it and this is the first problem. Gonna call the dealer.

Pars · 07-30-2007, 11:57 PM

If the cabin heater came on, It's an indicator that the cooling system is working properly. I've got 44,000 miles on my 07 Yaris 5dr/Manual and have driven it 90+ mpg with the AC blasting for hours without any overheating problems. However, Maine does have mountains and fast tracking up one of those would probably put more of a load on the engine, even more so if the engine is loaded down with an automatic tranny.

When the engine is cold, I'd check inside the radiator to make sure that it's full. Best case senerio, the engine light came on because the engine was overworked and by turning off the AC fan, it allowed an extra blast of hot air to cook the engine.

ryker · 07-31-2007, 08:40 AM

Well if this car can't make it up a few hills with the ac on I'll be trading it in quick. My honda civic has made this trip dozens of times and never had a problem. This is our first Toyota and so far I am not impressed. I have an app. with the dealer on Thursday if the wife can make it back without any problems.

nsmitchell · 07-31-2007, 08:43 AM

Get the dealership to check the A/C head pressure. The idiot light may be associated with the engine coolant as well as the A/C system. Too much head pressure in the A/C system will cause the A/C to cut off/blow hot air when it is really hot outside and sitting in traffic would really heat things up. Also it could be your radiator fan may have some issues.

eTiMaGo · 07-31-2007, 10:57 AM

sounds like an individual problem, if the cars here can stay stuck in traffic jams for hours under the scorching sun with the AC on full all the time, without overheating, then your mild summers should be causing any problems

07-30-2007, 06:38 PM	#1
ryker Drives: Yaris liftback Join Date: Dec 2006 Location: Washburn,Me Posts: 5	Having problems with overheating My wife drove our 2007 Yaris on a 3 hour trip in approx 80 degree weather with the ac on. When she had to idle in traffic due to road construction she shut off the ac and in a few minutes the overheat light came on. She turned on the heat and blower which caused the light to eventually shut off. She pulled over and checked the coolant and it was fine. She also says that the ac doesn't work if the car is running and in park, didn't know if it was supposed to do that or not. Anyone else have some overheating problems? I got 27,000 miles on it and this is the first problem. Gonna call the dealer. Last edited by ryker; 07-30-2007 at 07:13 PM.

07-31-2007, 08:43 AM	#4
nsmitchell View User's Garage Drives: LB-Auto-PWR-ABS-Cruise-Springs Join Date: Aug 2006 Location: Richmond, VA Posts: 1,065	Get the dealership to check the A/C head pressure. The idiot light may be associated with the engine coolant as well as the A/C system. Too much head pressure in the A/C system will cause the A/C to cut off/blow hot air when it is really hot outside and sitting in traffic would really heat things up. Also it could be your radiator fan may have some issues. __________________ Other car is a 2005 Mustang Convertible 4.0L V6 Manual - Legend Lime Get YarAss in gear! RIP - Casey Tatum

07-31-2007, 10:57 AM	#5
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	sounds like an individual problem, if the cars here can stay stuck in traffic jams for hours under the scorching sun with the AC on full all the time, without overheating, then your mild summers should be causing any problems __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
HELP WITH NEW 2007 PROBLEMS	partenac	General Yaris / Vitz Discussion	15	05-31-2007 05:06 PM
some minor problems after installing my HID kit, any professionals?	ASHRAF	DIY / Maintenance / Service	14	03-09-2007 10:54 AM
headlight problems	KSIbucky	DIY / Maintenance / Service	2	02-28-2007 10:54 PM
dash problems...help needed	foggy08	DIY / Maintenance / Service	1	01-25-2007 08:04 PM
Timing chain, sprockets, & cam position sensor problems?	PetersRedYaris	DIY / Maintenance / Service	8	01-04-2007 11:50 AM

07-30-2007, 11:57 PM	#2
Pars Drives: 07 Yaris Liftback Join Date: Aug 2006 Location: Toronto Posts: 418	If the cabin heater came on, It's an indicator that the cooling system is working properly. I've got 44,000 miles on my 07 Yaris 5dr/Manual and have driven it 90+ mpg with the AC blasting for hours without any overheating problems. However, Maine does have mountains and fast tracking up one of those would probably put more of a load on the engine, even more so if the engine is loaded down with an automatic tranny. When the engine is cold, I'd check inside the radiator to make sure that it's full. Best case senerio, the engine light came on because the engine was overworked and by turning off the AC fan, it allowed an extra blast of hot air to cook the engine.

07-31-2007, 08:40 AM	#3
ryker Drives: Yaris liftback Join Date: Dec 2006 Location: Washburn,Me Posts: 5	Well if this car can't make it up a few hills with the ac on I'll be trading it in quick. My honda civic has made this trip dozens of times and never had a problem. This is our first Toyota and so far I am not impressed. I have an app. with the dealer on Thursday if the wife can make it back without any problems.