COOLING FANS ARE RUNNING ALL THE TIME EVEN IF IGNITION IS ONLY TURNED TO ACC.

  • Tiny
  • mudrulz
  • 2000 Lexus ES 300
  • 148,000 miles

Have a 2000 es300 and replaced the battery and now the cooling fans start and run all the time. What could be happening at this point?

Monday, January 9th, 2012 AT 5:53 AM

4 Answers

  • Tiny
  • CJ MEDEVAC
  • Expert
  • 8,986 posts

THE COOLING FAN RELAY MAY BE "STUCK" INSIDE

IF YOU "THUMP IT", IT MAY COME LOOSE, AND THE FANS STOP RUNNING

REPLACE IT, IT WON'T GET BETTER

http://www.autozone.com/autozone/parts/2000-Lexus-ES300/Relay-Radiator-Cooling-Fan-Motor/_/N-jedcxZ9cj89?filterByKeyWord=COOLING+FAN+RELAY&fromString=search

THE MEDIC

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Monday, January 9th, 2012 AT 7:05 AM
  • Tiny
  • Oxamanduhx
  • Member

Try the cooling fan sensor.

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Wednesday, February 8th, 2012 AT 9:20 PM
  • Tiny
  • mudrulz
  • Member

Tried the cooling fan relays and the cooling fan sensor and the fans still run all the time even after engine is fully warmed up. Will the next step be to go to the dealership and have them put it on a computer? Thanks David

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Tuesday, April 24th, 2012 AT 4:09 AM
  • Tiny
  • CJ MEDEVAC
  • Expert
  • 8,986 posts

SOMETHING TO TRY

NO HURTY NOTHIN'

DISCONNECT BOTH BATTERY CABLES

WAIT 10 MINUTES

HOOK POSITIVE SIDE 1ST---THEN NEGATIVE

PLEASE RETURN WITH A SMILE

THE MEDIC

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Tuesday, April 24th, 2012 AT 4:32 AM

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