Air Conditioner Problem

The system could be low on refrigerant.
Fortunately, most Toyota products still have a sight glass in the refrigerant line in front of the radiator.
See the attached for how to use the sight glass.

Mine doesn't change in appearance at all. Is mine low or do I need to take a look at the relay? And if so, what relay is it labeled as in the relay box?
Thanks!
 
Mine doesn't change in appearance at all. Is mine low or do I need to take a look at the relay? And if so, what relay is it labeled as in the relay box?
Thanks!

This might help! Just found this in another area! =)
9359d1144929591-c-light-blinking-2003-ltd-ac-relay.jpg
 
I have an issue with my ac blowing hot air. Compressor (or clutch) making rattling noise. Light for ac is solid (not flashing). Could this rattling be due to low refrigerant? I will have to check sight glass when I get home.
Engine is quiet, but as soon as I turn on ac, there is a click then a constant rattle. Or would this likely be that compressor is bad? I will also try to swap out relay with fog lights in off chance that that is the problem.
Thanks.
 
HELP! after disconnecting battery, my AC & windows won't turn on!

So riddle me this... I disconnected my negative battery terminal to swap speakers. When I reconnected the battery, I lost all control to my A/C, windows, Parking brake light won't come on, Compass is stuck on "East", and some other controls are not working right.

However, the car starts fine and runs normal but not all the controls work now!

I have been reading up on this issue, and I have heard that disconnecting your battery can reset your ECU. Seems like a stupid thing since disconnecting a battery is a normal maintenance routine.

My car is not even a month old!! It has been a miserable 2 days driving to work in 90 degree weather. I almost passed out today while driving because it was that hot.

Has anyone ever heard of this problem, or found a fix for this? it may be a fuse/relay, but i really hope its nothing more serious.
 
So riddle me this... I disconnected my negative battery terminal to swap speakers. When I reconnected the battery, I lost all control to my A/C, windows, Parking brake light won't come on, Compass is stuck on "East", and some other controls are not working right.

However, the car starts fine and runs normal but not all the controls work now!

I have been reading up on this issue, and I have heard that disconnecting your battery can reset your ECU. Seems like a stupid thing since disconnecting a battery is a normal maintenance routine.

My car is not even a month old!! It has been a miserable 2 days driving to work in 90 degree weather. I almost passed out today while driving because it was that hot.

Has anyone ever heard of this problem, or found a fix for this? it may be a fuse/relay, but i really hope its nothing more serious.

Any update?
 
blown fuse

Yea so turns out it was a blown micro-fuse. The dealer tried to blame it on the aftermarket interior LEDs that I installed, but thats a bunch of BS! They said next time they won't cover it under warranty .

Just one little fuse was linked to the AC, windows, and 12v inverter button... but luckily it was a simple fix. Next time something like that happens, i will just put the factory interior light bulbs back in.
 
Hello, i own a 2008 Toyota 4runner limited v6 and am having an ac issue.. Would you happen to know the part number of this relay?
 
Driver side warm and passenger side cold

Ok I am beyond confused....04 sport edition 4runner and my a/c is warm at times on the driver side but cold on the passenger side. I took it to the dealership and they said it would cost $70 to diagnose the problem which when I told the lady what was going on she seemed confident in what the problem was and rattled the info off like she had done it a thousand times. Then she tells me if its what she thinks it is (I cant remember what it was) its going to be over $750...... Why would it be cold through one side and warm through the other side?

I think she said it was like a door that shuts and the one for the driver side is shut and they have to pull the dash off and hook a computer up too it and tell it to open.....HELP!
 
Ok I am beyond confused....04 sport edition 4runner and my a/c is warm at times on the driver side but cold on the passenger side. I took it to the dealership and they said it would cost $70 to diagnose the problem which when I told the lady what was going on she seemed confident in what the problem was and rattled the info off like she had done it a thousand times. Then she tells me if its what she thinks it is (I cant remember what it was) its going to be over $750...... Why would it be cold through one side and warm through the other side?

I think she said it was like a door that shuts and the one for the driver side is shut and they have to pull the dash off and hook a computer up too it and tell it to open.....HELP!

I have had the same problem for a month now. Did you ever figure it out?
 
I bought a new cabin filter since mine was very dirty and also bought a new A/C relay. Didn't get lucky after both were replaced. My next step is to take the runner into a friends shop because I noticed bubbles in the view area. Must mean I need some more water freon. Hopefully that fixes the issue.
 
Update on my A/C issue. Went to my friends shop and they vacuumed and refilled the freon to 1.32. The A/C instantly started working better than ever. So I believe it was just low on freon. Still have to monitor it for a while and make sure there is no leak. I may go back to do a leak test next week just in case.
 
LOST DONT KNOW WHERE TO GO 2005 4 runner problems

I have a 2005 Toyota 4 Runner that last August 2016 the Ac would diminish out of the dash to nothing after driving for awhile. I could still hear the blower working and if i shut my car off for about 30 minutes it would start working again blows ice cold when it works. I took it to a shop and they found the evaporator freezing up and replaced it with the expansion valve. Now im back in the same boat again. took it back to the shop and when the rpms went up the low side dropped to 5 and the high side was 200 at idle low side was at 25 and high side was at 225 at idle. they evac and recharged the system and it was full no freon lose. they said that the high side line off the compressor was at 150 degrees to the condenser and out of the condenser was only 98 degrees and pressures still did the same thing and after driving for at least 45 minutes to an hour ac would slowly weaken out of the dash. They said i needed to replace the a/c condenser so they did. Now pressures are perfect at rpm with low at 25 and high at 250. I took the vehicle on a road trip to mexico and 1 hour into driving the ac diminished but you could still hear the blower working but no flow. pulled over shut it off waited 30 minutes started it up and worked fine. Now i have a thermometer in my vent and it blows cold as heck down to 36 degrees on the freeway before it goes away. I dont know what else it could be nor does the shop its at again. any idea because its come down to me driving for 30 minutes turning ac off for 3 minutes and back on for 30 minutes so i can keep it cool with out pulling over for a half an hour or more. Im lost any suggestions would help
 
2005 Air Conditioner Won't Turn On

Me: 2005 4Runner 6 cyl SR5, 140K miles

Background: Every few weeks the AC won't cut on at all. Nothing. No air, no noise, nothing. After a day or so it runs great for a few more weeks then seems to do same thing.

What I've Done: Replaced the relay with a new one. Did AC Recharge flushing old and filling with new. Had them check for leaks. None to be found.

Electrical? Compressor going out?

Again it works great except it goes dead for a day or so every few weeks.

Appreciate any help.
 
I have a 2005 Toyota 4 Runner that last August 2016 the Ac would diminish out of the dash to nothing after driving for awhile. I could still hear the blower working and if i shut my car off for about 30 minutes it would start working again blows ice cold when it works. I took it to a shop and they found the evaporator freezing up and replaced it with the expansion valve. Now im back in the same boat again. took it back to the shop and when the rpms went up the low side dropped to 5 and the high side was 200 at idle low side was at 25 and high side was at 225 at idle. they evac and recharged the system and it was full no freon lose. they said that the high side line off the compressor was at 150 degrees to the condenser and out of the condenser was only 98 degrees and pressures still did the same thing and after driving for at least 45 minutes to an hour ac would slowly weaken out of the dash. They said i needed to replace the a/c condenser so they did. Now pressures are perfect at rpm with low at 25 and high at 250. I took the vehicle on a road trip to mexico and 1 hour into driving the ac diminished but you could still hear the blower working but no flow. pulled over shut it off waited 30 minutes started it up and worked fine. Now i have a thermometer in my vent and it blows cold as heck down to 36 degrees on the freeway before it goes away. I dont know what else it could be nor does the shop its at again. any idea because its come down to me driving for 30 minutes turning ac off for 3 minutes and back on for 30 minutes so i can keep it cool with out pulling over for a half an hour or more. Im lost any suggestions would help

I aactually have this exact issue. About 30-45 mins of driving and it just goes away. The air slowly stops coming out of the vents even though the speed of the blower fan doesnt change(as heard). The air then goes warm as well. Did you happen to figure it out? Or does anyone have any info on the issue?
 
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Help! I need somebody, help!!

2009 v6 4x4 auto SR5

My wife recently got a nice surprise on the first 80+ degree day while on a 4 hour trip with 2 kids under 4, the AC was out, blowing hot air.

I tried to add some freon, but it would not take any. I stopped by a shop and they were kind enough to do some diagnostics. Pressure was fine and we could make the clutch/condenser work by jumping the relay, but the relay is in good working condition which I confirmed by switching it out for the same one from my tundra. I am told there could be some kind of problem with the signal from inside the cab to the relay, something about a ground? I am not the most fluent with wiring, I did take some panels off and inspected the wiring from the heater/ac controls out through the firewall and nothing appears out of place? They were fairly busy and booked so I made an appointment for a week from now. Good shop, I trust them, but I am hopeful I can figure out the problem and fix it before having to cough up their hourly rate.

any help or suggestions are appreciated, I am new to AC issues.
 
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2003 4Runner SR5, 4.7L V8 4x4, 221k miles.

Mine is having the same issue. I'd previously recharged it every couple years (2015, 2017) and had no problems otherwise, it was always freezing cold.

I started out having only AC on the passenger side, then it slowly faded out to warm/hot from every vent. I recharged it, the cold air lasted 2-3 weeks, recharged with SuperSeal/refrigerant, literally lasted an hour or so of driving and it was back to blowing hot again.

I've never paid attention to the light on the console cluster to see if it flashes or not, but I'm going to check the fuse/relay today since that would be the easiest and cheapest fix... although with the way it went down, I'm sure it's going to be the most expensive problem I could possibly have. I just rebuilt the front end this year too.
 
ac only blowing hot air

hello all, i have a 98 4runner. the other day i tried to recharge my coolant and i think i may have put too much in. now its only blowing hot as if its stuck on heat. seems like the compressor is working, anyone have any ideas what to do about this? thanks
 

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