Mechanics

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

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?
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Mudrulz
January 9, 2012.



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

Tiny
CJ MEDEVAC
Jan 9, 2012.
Try the cooling fan sensor.

Tiny
Oxamanduhx
Feb 8, 2012.
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

Tiny
Mudrulz
Apr 24, 2012.
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

Tiny
CJ MEDEVAC
Apr 24, 2012.