I took my Lexus in because the A/C wasn't cooling. I was told the Freon was at .3 and should be at 1.7 and the evaporator coil and expansion valve would need to be replaced. The repair will cost $2200. The SUV is 4.5 years old with 41,000 miles. Could this possibly be a defect and can you comment on the repair cost?
A/C Evaporator coil and expansion valve on 2007 Lexus RX350
by mardigras in New Orleans, LA on March 12, 2011
ANSWER by raiderron , March 12, 2011
So I am assuming this car is out of warranty. You have a freon leak that is seepage and not gaping big otherwise would have been empty. Evaps are buried in the dash, hard to get to. If they say that is where the leak is and did they verify that with dye or how did they decipher that it is the culprit? You cannot see the evap usually on most cars. Was it process of elimination? Sometimes something goes down dash vents and over time it causes leaks from rubbing the evap. If you lay/stack things on dash then may have contributed to problem. When evaps leak it is usually a seepage. As pressure in system drops from leakage it leaks slower. Make sure you get in writing that rest of system is good and will not have to be back in 2 weeks and find another leak. May want second opinion. OOPS. Almost forgot, expansion valve is likely in same area and if do the work makes sense to replace while in there.