I own a 2002 model Toyota Sienna.
When I switch on the A/C botton the compressor works for a while and then starts blowing hot air when the A/C light starts blinking. I visited a technician today and he said the refrigerant was low, and he topped it.
The system appeared to work well while I was in his shop.
The propblem reoccured a short while after I left his shop. I wonder whether his diagnosis of the problem was correct.
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Re: A/C light blinks and compressor stops working
It could be correct, However when that lightflashes it mean that the system have a problem for example "system pressure low" or High. Its possible that the system have a leak in it and thats why the light may have come back on again. What you need to do is have the system check for leaks with an ultra violet light and dye. Good Luck
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Have you recently replaced a set of front or rear tires? If they aren't the same size they will do this exact symptom. If you haven't you have a bad wheel speed sensor. I wish I could tell you which one across the Internet but I can't someone needs to hook up a scanner to your sienna. Good luck and reply if you need further advice.
If the a/c is not working, it's most likely the clutch relay. Under the hood next to the battery, there is a fuse and relay box. One will be marked magnetic clutch or an abbreviation of that. If the part number is
90987-02022,it should be changed out to the updated relay with a part number of 90987-02028. It 's around $70 from Toyota or you could find an aftermarket one for about $17 at your local automotive parts store.
The Sienna has had problems with the relay that controls the clutch going bad. Under the
hood, next to the battery, there is a fuse and relay box. One will be
marked magnetic clutch or an abbreviation of that. If the part number
90987-02022, it should be changed out to the updated relay with a part
number of 90987-02028. It 's around $70 from Toyota or you could find
an aftermarket one for about $17 at your local automotive parts store. On some models the a/c light will blink if this is the case but not on all. You could swap it with the fog or possibly the horn relay to see if this is the problem.
Either 2 things, the fuse is blowen, or ther AC belt is broken.
Open the hood, have some one start the car, turn AC ON, you should here a click and the engine rpm will drop slightly, you should also be able to see the compressor wetter the drive belt is broken or not.
Replace your magnetic clutch relay. TSB EL011-05 : A/C LIGHT FLASHING - MAGNETIC CLUTCH RELAY 6/3/2005 - 2001 – 2004 Toyota Camry, ECHO, & Celica. 2002 – 2004 4Runner, Corolla, & MR2 Spyder. 2003 – 2004 Matrix, Sienna, & Solara. This bulletin is to provide information regarding countermeasures to the A/C magnetic clutch relay for A/C light flashing (inoperative A/C) issues on some vehicles equipped with a magnetic clutch compressor. Applicable Warranty*: This repair is covered under the Toyota Comprehensive Warranty. This warranty is in effect for 36 months or 36,000 miles, Whichever occurs first, from the vehicle’s in-service date. * Warranty application is limited to correction of a problem based upon a customer’s specific complaint