caln Posted July 5, 2011 Share Posted July 5, 2011 A/c System Suddenly quit blowing cold air. Car was driven through heavy rain night before. Green light blinks on A/C button. Checked codes and got back 21 & 24. Went and picked up a relay #90987-02028 from dealer. I could not find the relay location to even try it. It is also expensive. When the engine is at idle and the a/c is selected, there is a load on the engine so the clutch sounds like it is engaging. Is the relay located just beneath the brake fluid reservoir on the drivers side of the firewall? Any ideas with those two codes? Thanks for any help. Quote Link to comment Share on other sites More sharing options...
caln Posted July 6, 2011 Author Share Posted July 6, 2011 A/c System Suddenly quit blowing cold air. Car was driven through heavy rain night before. Green light blinks on A/C button. Checked codes and got back 21 & 24. Went and picked up a relay #90987-02028 from dealer. I could not find the relay location to even try it. It is also expensive. When the engine is at idle and the a/c is selected, there is a load on the engine so the clutch sounds like it is engaging. Is the relay located just beneath the brake fluid reservoir on the drivers side of the firewall? Any ideas with those two codes? Thanks for any help. Quote Link to comment Share on other sites More sharing options...
caln Posted July 6, 2011 Author Share Posted July 6, 2011 Does anyone have a service manual who would look up the location of the magnetic clutch relay? My fuse box in engine compartment just has fuses, and there is a small relay box just behind. Those relays are labeled "starter- c/open-ig2-fan no.2 f/pmp- efi main- a/f". It seems that there is another relay box somewhere. Quote Link to comment Share on other sites More sharing options...
mann777 Posted July 7, 2011 Share Posted July 7, 2011 Check the TSB, hope this resolves. AC lite Blinking on RX.pdf Quote Link to comment Share on other sites More sharing options...
rkartan Posted August 25, 2012 Share Posted August 25, 2012 Hi - Thanks for the PDF. Still lost. Where is the relay located exactly. Took the car apart, but still can't pinpoint the location. Quote Link to comment Share on other sites More sharing options...
TerryLTaylor Posted September 7, 2020 Share Posted September 7, 2020 Did you ever find the location for that relay switch? Trying for find it on a 2010 Lexus RX350. Please email me at terryltaylor@hotmail.com Quote Link to comment Share on other sites More sharing options...
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