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Coolant fans

I have a 1999 Toyota Avalon 3.0 V6. Both coolant fans are staying on all the time. I think it might be one of the relays. The only problem is, there are four of them, and I don’t want to replace all of them if I don’t have to. Have you come across this problem? If you have, please let me know A.S.A.P.

Thank You

Do you mean they stay on even when the key is removed?

If they are on only when the key is on, try turning off the climate control system. On some cars (I’m not sure about your Toyota), whenever the A/C compressor is engaged (i.e. in defrost mode), the fans will come on.