a/c noises even when a/c off
Thread Starter
Driver School Candidate
Joined: Apr 2015
Posts: 12
Likes: 0
From: FL
02-300 a/c noises even when a/c off
2002 es300
I was told a few years ago I had a vent control module going bad.
ac makes a loud bubbly grumbly noise and now an electrical "read" noise. the electrical noise is coming from foot well. sounds like the kick plate but definitely the foot well. the ac noises are in front of the driver.
I have found vent modules and there are 4 of them. im being told the "actuators" is failing that's why im hearing the electrical signal being sent repeated times. would an actuator be a vent module. the ac & heater modules are behind the ac panel in the dash
I was told a few years ago I had a vent control module going bad.
ac makes a loud bubbly grumbly noise and now an electrical "read" noise. the electrical noise is coming from foot well. sounds like the kick plate but definitely the foot well. the ac noises are in front of the driver.
I have found vent modules and there are 4 of them. im being told the "actuators" is failing that's why im hearing the electrical signal being sent repeated times. would an actuator be a vent module. the ac & heater modules are behind the ac panel in the dash
Last edited by sugarspotz; Apr 28, 2015 at 05:40 AM. Reason: need car info
Lexus Champion
Joined: Oct 2009
Posts: 1,841
Likes: 48
From: Montreal, Canada
Unfortunately I don't remember the sequence, but if you do a google search, or search this site, you may find it.
Otherwise, hopefully someone that does know will chime in.
BTW, You should always include the year and model of your car in your post. (I had to look it up on your profile)
Phil
Last edited by PFB; Apr 27, 2015 at 01:22 PM.
Thread Starter
Driver School Candidate
Joined: Apr 2015
Posts: 12
Likes: 0
From: FL
found this
"Running the A/C system diagnostics: Press RECIRCULATION and AUTO buttons together and turn key to ON position and watch the LCD aircond. system screen normally used for temperature settings for a numerical code indicating the problem area. BTW, zero zero (00) means normal. First, all indicator lights will flash 4 times, then a buzzer beeps. When error codes are displayed a short while later, slower display can be activated by pushing RECYCLE."
once in test mode you can start the car to test temps etc
Push front defrost button and it will put you into actuator mode? it moves through the vents positions individually. Once in this mode press recycle to stay in a certain position for testing.
to clear ac codes press front and rear defrost together
told to test on sunny day or it can throw solar senor codes falsely.
"Running the A/C system diagnostics: Press RECIRCULATION and AUTO buttons together and turn key to ON position and watch the LCD aircond. system screen normally used for temperature settings for a numerical code indicating the problem area. BTW, zero zero (00) means normal. First, all indicator lights will flash 4 times, then a buzzer beeps. When error codes are displayed a short while later, slower display can be activated by pushing RECYCLE."
once in test mode you can start the car to test temps etc
Push front defrost button and it will put you into actuator mode? it moves through the vents positions individually. Once in this mode press recycle to stay in a certain position for testing.
to clear ac codes press front and rear defrost together
told to test on sunny day or it can throw solar senor codes falsely.
Last edited by sugarspotz; Apr 29, 2015 at 10:43 AM. Reason: more stuff
Pole Position
Joined: Nov 2013
Posts: 292
Likes: 0
From: wellington, nz
found this
"Running the A/C system diagnostics: When switching ignition ON push RECIRCULATION and AUTO buttons together and watch the LCD aircond. system screen normally used for temperature settings for a numerical code indicating the problem area. BTW, zero zero (00) means normal. First, all indicator lights will flash 4 times, then a buzzer beeps. When error codes are displayed a short while later, slower display (step mode by repeatedly pushing Fresh) can be activated by pushing FRESH. Hitting OFF stops the diagnostics."
"Running the A/C system diagnostics: When switching ignition ON push RECIRCULATION and AUTO buttons together and watch the LCD aircond. system screen normally used for temperature settings for a numerical code indicating the problem area. BTW, zero zero (00) means normal. First, all indicator lights will flash 4 times, then a buzzer beeps. When error codes are displayed a short while later, slower display (step mode by repeatedly pushing Fresh) can be activated by pushing FRESH. Hitting OFF stops the diagnostics."
I can't recall off the top of my head which button but once activated there is another button press to switch between the sensor and actuator check (I think)...
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Driver School Candidate
Joined: Jan 2015
Posts: 39
Likes: 0
From: Georgia
found this
"Running the A/C system diagnostics: When switching ignition ON push RECIRCULATION and AUTO buttons together and watch the LCD aircond. system screen normally used for temperature settings for a numerical code indicating the problem area. BTW, zero zero (00) means normal. First, all indicator lights will flash 4 times, then a buzzer beeps. When error codes are displayed a short while later, slower display can be activated by pushing DEF (step thru modes by pushing DEF for each senor position). Hitting OFF stops the diagnostics."
to clear ac codes press front and rear defrost together
told to test on sunny day or it can throw solar senor codes falsely.
"Running the A/C system diagnostics: When switching ignition ON push RECIRCULATION and AUTO buttons together and watch the LCD aircond. system screen normally used for temperature settings for a numerical code indicating the problem area. BTW, zero zero (00) means normal. First, all indicator lights will flash 4 times, then a buzzer beeps. When error codes are displayed a short while later, slower display can be activated by pushing DEF (step thru modes by pushing DEF for each senor position). Hitting OFF stops the diagnostics."
to clear ac codes press front and rear defrost together
told to test on sunny day or it can throw solar senor codes falsely.
I'm going to try this on my 1999 ES300
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