RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

AC- low pressure port location?

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Old 05-24-18 | 08:59 AM
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Default AC- low pressure port location?

I have a 2005 lexus rx330 and i need to find the low pressure port to recharge my ac...
Old 05-24-18 | 11:27 AM
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It will have a blue cap on the ac line port with an "L" on it! Google is your friend.
Old 06-10-18 | 11:44 AM
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I have googled everything and still cant find the AC port
Old 06-10-18 | 01:54 PM
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Type this into Google - 2005 lexus rx330 low pressure port.

click on 1st response - How to Add Refrigerant to a 2004-2009 Lexus RX330 - 2005
Old 06-10-18 | 02:10 PM
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Originally Posted by DennisMik
Type this into Google - 2005 lexus rx330 low pressure port.

click on 1st response - How to Add Refrigerant to a 2004-2009 Lexus RX330 - 2005
Yeah ... I saw that, and may of the other search results, including searching images but my engine looks nothing like that one. My 2005 Lexus RX330 on right. I took apart the air intake to look underneath and still couldn't find it. Thanks for the response.

Old 06-10-18 | 03:40 PM
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The low pressure port is on the line that comes from the firewall and goes directly to the inlet of the A/C compressor. Very likely it is rubber half way, then metal the rest. On the A/C compressor, are 2 lines, one is high pressure, will go to condenser in front of radiator (looks like a skinny radiator), then to firewall, you want to trace the other one.
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Old 06-11-18 | 10:25 AM
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The low-pressure line is near the firewall (passenger side). It has a black cap that needs to be removed in order to access the connection.
1St photo shows the location and black cap


2nd photo shows the cap removed


3rd photo shows the High-pressure connection.

Last edited by Audiqv8; 06-29-18 at 09:40 AM.
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Old 06-11-18 | 12:39 PM
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Thank you!

Narrowing it down to the passenger side near the firewall helps tremendously. It's my wife's car, so I will look when I get home.

I was led to believe it was between the battery and the engine and could not find it. This would explain why!

Thanks again!!
Old 09-02-20 | 10:05 PM
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Default RX400h a/c low psi location

Low psi location is 10 inches below positive battery terminal next to the sight glass, not a good spot when engine is hot. Not well thought out when engineered. Got it done though and at least this post got me looking in the right area. Thanks

The low-pressure line is near the firewall (passenger side). It has a black cap that needs to be removed in order to access the connection.
1St photo shows the location and black cap


2nd photo shows the cap removed


3rd photo shows the High-pressure connection.[/QUOTE]
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