Heat/A/C problems

2007 LEXUS GS 350
124,000 MILES • 3.5L • 6 CYL
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JOHN LOGO
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I just bought the car last week and I was told it only needed a blower so I had one installed. heat only comes from the defrost and for most of the time it is colder on driver side while the passenger side is normal. the weird thing is if I put the A/C on it blows somewhat out of the front vents not one hundred percent but a lot more than the heat! I should also mention that I had to change the battery and when I did that it tripped something and the alarm would not shut off had to have Lexus change the door actuator.
Apr 9, 2018 at 12:18 AM
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ASEMASTER6371
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Good morning.

Did Lexus resolve the air flow issue with the actuators? do you still have the same issue?

Roy
Apr 9, 2018 at 5:34 AM
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JOHN LOGO
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They did not want to give me a guess they wanted $185.00 an hour to take apart dash to test the actuators they estimated three hours to do it. I refused.
Apr 9, 2018 at 5:48 AM
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ASEMASTER6371
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Okay, sounds like a dealer.

The actuators could definitely be the issue. if the doors are not changing as commanded, this will result.

try this. remove the fuse for the HVAC system and wait ten minutes. then reinstall the fuse and turn the key to the on position. wait one minute before starting. that calibrates the actuators and see if that made any difference.

Roy

Apr 9, 2018 at 6:11 AM
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JOHN LOGO
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In the fuse diagram there is about five that air conditioning do you know which one?
Apr 9, 2018 at 6:14 AM
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ASEMASTER6371
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Okay, diagram attached. the ETCS.
Image (Click to enlarge)
Attached Media
Apr 9, 2018 at 6:22 AM
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JOHN LOGO
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Thank you so much I will keep you updated!
Apr 9, 2018 at 6:26 AM
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ASEMASTER6371
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sounds good. glad to help.

Roy
Apr 9, 2018 at 6:28 AM
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JOHN LOGO
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Okay, so it looks like the mode servo is blown? Do you happen to know how to change it?
Apr 9, 2018 at 3:22 PM
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JOHN LOGO
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And also the temperature one on drivers side?
Apr 9, 2018 at 3:22 PM
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ASEMASTER6371
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How did you determine that?
Apr 9, 2018 at 3:23 PM
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JOHN LOGO
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When I went to pick up the car Lexus told me hose were the two problems even though they tried to rip me off. I do not understand them sometimes.
Apr 9, 2018 at 3:24 PM
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JOHN LOGO
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Is there a step by step guide anywhere??
Apr 9, 2018 at 6:45 PM
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ASEMASTER6371
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Sorry was traveling yesterday.

You need a advanced scan tool to monitor the AC system to see if commands are sent to the actuators to verify. It is not as easy as checking wires anymore. you need to see commands from the system and see if that command is getting to the actuators.

That is why the dealer wanted that much money. you do not need a dealer for this repair at all. a shop with an advanced scan tool can perform this check without charging you $185.00 per hour.

Do you or can you get a scan tool that can read the data from the AC?

Roy
Apr 10, 2018 at 4:19 AM
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JOHN LOGO
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I checked a few gas stations no one had one for AC.
Apr 10, 2018 at 7:16 AM
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JOHN LOGO
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One of them told me to take off glove box and visually check.
Apr 10, 2018 at 7:18 AM
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JOHN LOGO
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Okay, so it looks like the wheel is trying to spin but it gets locked up it spins a little.
Apr 10, 2018 at 12:17 PM
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ASEMASTER6371
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which wheel?? what are you seeing???

Roy
Apr 10, 2018 at 1:47 PM
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JOHN LOGO
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I posted a video did it go through?
Apr 10, 2018 at 5:39 PM
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ASEMASTER6371
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no, have not seen it. try it again

Roy
Apr 11, 2018 at 4:48 AM