Prius (2010-12) :: Noise Coming From Back Seat Battery Vent?

A few weeks ago I started to notice that the battery vent fan was turning on way more than usual. I've had the car now for five years (34K miles) and I've only heard the fan go on a handful of times, even in the hot Las Vegas summers. Once I really started to pay attention to it I noticed the noise only started once I hit about 30-35 mph and got louder as I went faster. As I slowed down, the noise would get quieter and eventually stop as the car came to a stop.

This week I caved and brought the car in to the dealer to get checked out and they did an inspection of the vent, fan and did a complete diagnostic on the hybrid system and batteries. I was worried about damage to the traction battery if the vent fan was malfunctioning or clogged. I'm out of warranty with no extended coverage so I was pretty shocked that the dealer didn't charge me a dime to do the tests. All the tests came back clean and they said all the systems tested above average and that the fan was operating normally so I shouldn't worry about it.

But the noise still persists and it's starting to drive me a little batty. It has never made this much noise before. Is there something else that could be going on that the dealer missed? Maybe the noise I'm hearing is something else and it only sounds like it's coming from that area?

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Celica :: Water Spill Due To Boil - Placement Of Thermostat Jiggle Valve

2.2 liter celica would improper placement of thermostat jiggle valve cause water to boil in upper radiator hose and overheat engine and spill water from overflow.

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Prius (2010-12) :: Found Battery Tray Was Filled With Water

I am considering purchasing a 2010 as an upgrade from my current 2008, I have been reading recently as these last 3 days of constant rain made me check my current one for leaks and like normally the battery tray was filled with water.

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Prius (2010-12) :: Found Water In Battery Compartment / Bad Odor Coming

OK, I've been reading a lot about this problem occurring in the pre 2010 prius where there is a crack around the hatch that fills the 12V battery well with water. About a month ago, I started getting a whiff of something rotting. A mix of the dead smell and rotting fruit. I was certain one of my kids left some food in the car or something got in the HVAC vent. As time has gone by, the odor has changed to more of a rotting leaves kind of smell.

I got out my shopvac and a snake camera. I went through the HVAC system and found that the filter was pulled back a bit. I replaced it on the spot. I found a few leaves and dust and that was it. The air coming from the vents from the outside smells clean. There were lots of wet leaves in the engine bay, but it wasn't the problem.

I started tearing apart the trunk because sometimes stuff spills into the tire well. I found the spare tire had turned brown on the tread.

I opened the battery compartment and found about an inch of standing milky white water. The kicker here is that the water didn't seem to smell that bad! I dried it all up and bleached the metal to kill any mold that might be in the residue...but the odor remains. The car smells awful!

I have torn apart the back of the car but I cannot find the source of the leak. I actually think it was from the car wash or going through a puddle and water got in the rear vent. The battery fender vent vanes were flapping with gusts of wind today, but even after a heavy rainstorm no new water has gotten in.

The car was hit in the parking lot and the rear fender moved about an 1/8th of an inch from the bumper, but there are no obvious signs of water entry anywhere... in fact, I was even suspicious that it might have come from the battery itself, but I didn't touch it (used paper towels on a snake to dry it up under there). I didn't think to try baking soda to see if it was an acid, which makes bleach pretty stupid to use...but I didn't see any foaming.

TL;DR Found water in my 12V battery compartment. My car smells bad. Cleaning out water did not improve smell. Nothing in HVAC system, it is only clean air source in car. No signs of water ingress above 12v battery well. After rainstorm, no additional water found in battery well. Fender vent flaps in gusty wind, but still no new water.

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Prius (2004-09) :: New 12v Battery Installed, Vent Tube Elbow Missing

I decided to install a new Optima yellow top battery because I performed the battery check and found the voltage low and therefore believed my 2008 was still running on the original OEM 12v battery. Much to my surprise I found a non-OEM battery installed and the vent tube elbow missing!

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Prius (2004-09) :: Battery Vent Making Noise When The Temps Are Higher

I own a 2005 Prius with about 145,000 miles on it. I love it. However, I've noticed that lately, the vent in the back by the window will come on and make a lot of noise. Some research has told me that this is the air vent for the battery that is in the back, and usually comes on when the temps are higher and the battery is starting to get a little overheated.

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Prius (2010-12) :: Odd Smell From Ducts After Using Vent After A/C Off

In my 2010, when I use the A/C, the air comes out cool and dry. When I turn the A/C off, and just run the vent, I notice a few things.

1) The air warms up (duh!)
2) The air is more humid (duh!)
3) The air has a mustier, stale smell to it.

When I just run the vent (and don't run A/C prior) I don't notice the odor, but if I then run the A/C for a bit and then run the vent, the musty/stale smell returns.

I've noticed it and tend to ignore it. My wife noticed it and pointed it out to me, and it prevents me from cycling the A/C off as the odor fills the cabin.

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Prius (2010-12) :: Musty Smell From The Vent

I did read the most recent thread on this, and while those lessons would be good if I was out of warranty, I'm about to go in for the 5k service after 2 months on the road.

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Prius (2010-12) :: Air Sound Coming From Vent

Today I noticed a sound as I was driving almost like I forgot to shut a door. I believe it is coming from the vent which is located on the right side of the back seat. I'm not sure if I ever heard this before. It's been in the 90's this week.

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Prius (2010-12) :: Vent In Winter Only Works For A Minute

I like to have heat coming out of the vent. However, in the winter, when I click for it to come out of the vent (as opposed to the floor), it turns on the A/C full blast. I then turn off the A/C and turn down the fan speed. About a minute or less, it automatically turns itself back to floor heat.

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Prius (2010-12) :: How Rear Seat Vent Works

How the rear seat vent works? When you started your car and car was moving, did you notice that vent is always blowing? OK, I just notice that my rear seat vent just keeps blowing when my car is moving. Especially, it is loud as I hear when I turn off my radio.

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Prius (2010-12) :: 2013 - Vent Blowing Cool Air At Higher Temps?

I purchased a brand new 2013 Prius 2 last October and I'm loving it so far.

However, I notice that even if it's slightly warm outside, and I have my cabin temp set at a higher temperature than outside, the vent blows cooler air.

For example, the other day it was 65F outside. Since it was warmer than usual, I turned down the cabin temperature to 65F as well. It was nice and cool, but a little TOO cold. So I turned it up to 70F. It was still blowing cold air. I had to turn it up to 72F before it was warm enough to feel comfortable.

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Prius (2010-12) :: 2011 - Rear Seat Vent Should Blow Air Out Or Suck Air Into It?

I sat in the back of my recently purchased 2011 Prius Three, not III, for the first time yesterday. I learned from this forum that the vent in the rear seat is to keep the hybrid battery cooled. However, while sitting the back during a ride, I noticed it was blowing air out instead of sucking air. I would think the vent should be sucking air from the cabin to keep it cool, but that does not seem to be the case here. After a 30 minute drive, I even felt the air coming out of it was warm and the A/C began to feel that it was not enough for my area in the back of the car.

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Prius (Gen 2) :: 12V Battery Water Leak?

2004 Prius

Replaced my spark plugs today, and when I disconnected the 12V battery, found a surprise

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Prius (2004-09) :: Water Intrusion Above The 12V Battery Bay?

So when I got home this evening I decided to tackle something that I was concerned about- the state of the HV battery fan. As I took apart the back right of the interior to get to it, I noticed that there was moisture on the inside of some of the trim pieces where I wouldn't have expected it- but I discounted it because of how much moisture had been in the car after having it detailed.

As I got further in though, to my annoyance it started to rain, and I had to stop (since I was working in the driveway). When it let up a bit and I went back out, I was dumbfounded to find a lot of water splashed over the 12V battery. At first I thought it was from the lift gate being open when I had been working on things, but it was no longer raining and there was still water dripping down. After getting a towel to put over things to catch the water, I tried to track back where the water was coming from, and found that it was dripping from a formed hole on the underside of the upper 'sill' (along the side of the glass in the lift gate) from inside the body from sources unknown (well, I know the water was coming from the rain, but not how it was getting into the car...)

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Prius (2004-09) :: Water In 12 Volt Battery Well

I recently discovered that the compartment where the 12 volt battery is located had water inside. I checked for leaks none found. I also found a drain plug underneath, to drain the water out. Where might the water be coming from.

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Prius (Gen 2) :: Changed 12V Battery - Found Water In Compartment

Just changed out my 12v battery in my 2008 Prius, I found water in the battery compartment. There have been heavy rains this past weekend but it should not have entered the car.

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Prius (2004-09) :: Checking Water Level In Battery

After trying to check the water level in my auxiliary battery and not getting a clear view of any place to add water, I decided it was time to remove the battery so I could get a better understanding of how this was to be done. I went through the whole process of dismantling all the brackets, clamps and wires that were in the way, removed the battery and, to my surprise, read the warning on the top that said "Never add water" and "Do not attempt to remove cover". Oh well, I'm supposing this is an agm battery and I'm going to let "sleeping dogs lie".

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Golf IV / Jetta IV :: Water Coming Into Trunk Via Vent Valves

I get a very small (between a teaspoon and tablespoon) amount of water coming in through my trunk vent valves when it rains heavy. I replaced them last week with new OEM ones thinking that was the problem because the old vents used the foam for the seal (new ones have rubber for the seal). I noticed that the water is coming in through the openings of the flaps for some reason. The water is not coming in through the seal of the vent valves at all. I also used silicone for that too just to be safe. Some how water is getting between my bumper and trunk and dripping down into the fabric flaps of the vents.

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