I have 2008 Lexus rx350 and am having a problem with it.when I have shut the car off taken the keys out the fan comes on when ever and runs the battery down until I have a dead battery.This happened 2 years ago to the same car,I took it to the dealership/repair shop.They told me it was the wiring harness that was damaged and needed to be replaced which they did,now it's doing the same thing.what is wrong here?how do I fix it? Please help.

Asked by Apr 16, 2016 at 05:08 PM about the 2008 Lexus RX 350 AWD

Question type: Maintenance & Repair

Fan runs my battery down in my Lexus rx350,so I have a dead battery next
time I want to use the car what is going on ?

3 Answers


Try changing the cooling fan relays first, sometimes they get pitting in the points and then they stick closed.

Where do I locate the cooling fan relays? How many are there ? Where can I purchase these ?


They are in the power distribution box under the hood and are usually marked, my RX had two, most parts stores should have them or can get them overnight.

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