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Toyota Yaris Climate Control Problems

29 messages,  Last post on Oct 25, 2009 at 7:40 PM

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What is this discussion about? Toyota Yaris, Heating / Cooling, Hatchback

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#21 of 29 Re: Toyota Yaris bad smell (mold and mildew) [tenaz] by girlcarbuilder Jul 06, 2009 (6:48 am)
Replying to: tenaz (Jul 05, 2009 8:51 pm) Hmmm, mold and mildew can be real problems here in the south.   Our sale is currently in a suspense mode, ink has not hit the paper yet. We did advise parts we want the complete service manual set for our shop: not that I want to do their warranty work on my car!   Hopefully they have resolved this issue for 09: I think I will inquire a lot more carefully for we close this deal.   Thanks for the heads up.
#22 of 29 Re: Toyota Yaris bad smell (mold and mildew) [tenaz] by girlcarbuilder Jul 08, 2009 (9:22 am)
Replying to: tenaz (Jul 05, 2009 8:51 pm) Okay, I had some time recently to look at the new Yaris on the lot to see what I could see about this issue.   Comparing the cowl vent right below the windshield, I noticed the Yaris does not have a screen under it like the other models do. Talking to parts department, the exploded view does not indicate that it has a screen at all. That makes this car very prone to getting leaf and other trash into the a/c vent system. Also, many cars have been made this way in the past! I recall old Volkswagens to be that way.   After seeing this, I would do the following. Remove the cowl plastic vent and glue a piece of nylon screen material inside it. I suspect silicone will work as a glue. Clothes pins make nice clamps for little projects like this. Test the silicone first on the inside to make sure it will stick to the plastic. Allow it to set up for 24 hours then replace. Total repair time will be about 48 hours. 24 hours to allow testing of your glue material.   With or without that screen, I have seen many people allow trash to build up around that vent. This causes nothing but problems long term. Keep that screen/vent cleaned out. Avoid parking under shedding trees. That is tough for those of us who love trees. Otherwise, cover that vent up, install a screen whatever.   They tell me that the 09 has an optional cabin air filter available: I recommend you get one to keep junk out of the evap core that comes from the cabin area.   We all already know about the sprays that "make it smell better." But the best action here is prevention. Oh, it also pays run outside air at times to dry that evap box out. Replies to this message: lhanson (Jul 09, 2009 8:45 am) girlcarbuilder (Jul 09, 2009 11:03 am)
#23 of 29 Re: Toyota Yaris bad smell (mold and mildew) [girlcarbuilder] by lhanson Jul 09, 2009 (8:45 am)
Replying to: girlcarbuilder (Jul 08, 2009 9:22 am) My 2007 Yaris hatchback comes with a slot for the cabin air filter. It is located behind the glove box. I have two on order. Paid about $20 for both of them from an Ebay store. I got the second one for my daughter's 2008 Yaris Sedan. Replies to this message: girlcarbuilder (Jul 09, 2009 11:03 am)
#24 of 29 Re: Toyota Yaris bad smell (mold and mildew) [lhanson] by girlcarbuilder Jul 09, 2009 (11:03 am)
Replying to: lhanson (Jul 09, 2009 8:45 am) Just remember that most of this problem is coming from the outside vent that does not have a screen.   Our new car is being bought 400 miles away from here. that dealer will be running the down payment shortly on plastic. As soon as the fun is done and it gets home, about the 20th, I will be looking into getting an outside screen set up for it. Will post how it comes out.   Thanks for the info on the filter price. Far cry from $24 a piece at the dealer.
#25 of 29 US version of the Toyota Yaris air intake by ellenbetty Aug 10, 2009 (7:59 am)
I had the same problem with my Ford Escort wagon. I learned to clean out the cabin air intake tunnel with a vacuum hose.   I was annoyed to learn that Toyota did not install the cabin air filter in the US version of the Toyota Yaris. I learned that the filter was missing when Lube Stop tried to check the air filter at 12,000 miles. But the Toyota Yaris air filter is not a HEPA filter. Mold spores will pass through a new Toyota Yaris air filter.   The Toyota Yaris has a better designed cabin air intake than my 1994 Ford Escort. My Ford Escort has a cabin air intake tunnel that clogged with leaves. I had to use a vacuum cleaner hose to get out the leaves. The Ford dealer had the nerve to suggest that I buy a vehicle cover to prevent leaves from getting in the cabin air intake.   The main sections of both of my 2007 Toyota Yaris 3 door liftback are covered with nylon screening. I did not notice there is secondary air intake that cannot be seen without opening the hood. That secondary air intake is without a screen. Thanks for the warning. It is a good idea to clean the area in front of the air intake of leaves that build up. It sounds like a good idea to glue a piece of nylon screening on the outside of the secondary air intake.   Since there has been zero mention of the main cabin air intake having a nylon screen, I wonder if there is a difference between those vehicles that have the Optional Winter Package in how the cabin air intake is protected? My guess is that the uncovered air intake is a back up in-case the main cabin air intake is covered with snow or ice.
#26 of 29 Mold issues by girlcarbuilder Oct 23, 2009 (11:09 am)
Update since purchase of our 09 Yaris. Yup, sure enough the mold problem began to show its ugly head when we first started to have several days of heavy rain here. Turns out it is not climate control issue after all.   Figured it out immediately. The problem is the floor mats are carpet! What they have for carpet is not carpet, but rather cheap fuzz. Get it wet, it grows molds! We added rubber floor mats on top of the other floor mats from Wal-Mart. They are the stiff ones with deep grooves to keep water from getting into the carpet/floor. You must take extra care to cut the mats to clear all pedals, the mat must also stay under the pedals and be very sure that each time you get in, the mat is pulled back in place to prevent it from jamming any pedals like the gas pedal. I also left the tab on top of the mat where it was stapled there so it would hit the bottom of the steering column and prevent the mat from folding up under the pedals any.   If the mat gets to a point it folds up, replace it immediately for it has become a safety hazard. Also to this point, do not use flimsy thin mats that fold up easily. If it folds at all, it can jam a gas pedal giving you a run away car. Never allow the mat to be on top of the pedals either. Use common sense on this.   There has been one fatal accident already in California with a Lexus this year with aftermarket mats. Toyota currently does not make an all season floor mat for the Yaris.
#27 of 29 At the same time there are those... by iluvmysephia1 Oct 24, 2009 (8:13 am)
who are wondering about Toyota's ECU operations. Whether it's an electronic failure of some kind going on regarding the out-of-control acceleration issue.   I would guess that it's not electronic, though Toyota needs to really slam that issue head on at it's design centers and find out if anything might be going on.   I think it's simply a bad floor matt design issue that caused this problem. That CHP Officer didn't know about the 3-second push in required on the stop-start button that would've turned off his loaner Lexus' motor. So sad. He could've also put the car's tranny in neutral.   What is being discussed is that he apparently only tried to jam the brake pedal down and couldn't get up enough leg strength to stop the out-of-control car. Replies to this message: girlcarbuilder (Oct 25, 2009 6:00 am)
#28 of 29 Re: At the same time there are those... [iluvmysephia1] by girlcarbuilder Oct 25, 2009 (6:00 am)
Replying to: iluvmysephia1 (Oct 24, 2009 8:13 am) Car manufacters have been cutting costs for years wherever they can. Older people can recall the plush loop carpet with rubber floor mats that had hooks on the backside to hold them down. What is being made now a days is no where close to that. So how do they expect a " cheap fuzz" carpet to hold down a floor mat? They put in one big hook to hold it in place. Fine for OEM, but when someone changes that floor mat out for an aftermarket for what ever the reason, problems occur. So we can not totally blame the change, yet we demand cars not to go up in price....ooooppps I am guilty as well!   Even years ago, with the good carpet and mats, you still had to look down and shift that mat back at times. Want proof of poor maintenance habits to back this up? Walk a junk yard sometime. The number one reason for a car to be junked before its time is poor maintenance aka I don't have time to relocate the floor mat or check the tires behavior. Tire Pressure Monitors are now mandatory because of that. Guess if we have too many incidents of this, we will soon have floor mat sensors as well. We watch our lights, tires, seatbelts and mats all of the time. Simple sounding, but can get you in big trouble everytime. Does not matter who the car belongs to, you should always check it out before you drive it! Basic drivers ed from years ago.   So any way, the main thing that surprised me was the officer never thought to turn the key off! Something we were taught years ago in drivers ed. Seems the newer generation is not being taught this....but when it comes to a high strung V6 in a Japanese product being floor boarded, you have little time to think this out. Screw saving the tranny or the engine at this point, it is your life you need to save. Hit the switch and hang on to the steering wheel for power steering will be gone. Before someone asks, yes I have been there and done that! Mechanics have seen it all....most! Uncle Murphy even has a few for us! Pray as well!
#29 of 29 It does get a person to going through... by iluvmysephia1 Oct 25, 2009 (7:40 pm)
some simple 1-2-3 mechanics steps of stopping an out-of-control car. Push the on-off start button in for at least 3 seconds will turn it off...put the automatic gearshift in neutral and you can brke the car to a stop in no time......turn the key off, if your car is operated by a key start system, otherwise just push the on-off start button in for 3 seconds, as has already been mentioned on this post...go over these in your mind several times...you might think you're prepared but once your car is accelerating you might think otherwise. Go over the procedures to stop your car a few times, it might save your life if you're so unfortunate that one of these incidents should happen to you!

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