2004 Toyota Sequoia brake light comes on

Tiny
VICKIR
  • MEMBER
  • 2004 TOYOTA SEQUOIA
  • 160,000 MILES
Last summer brake light kept coming on but toyota found no problem. For the past month the light has started coming on again. All winter no problem. But when the vehicle sits out in the hot sun, when started the light comes on.
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Thursday, August 8th, 2013 AT 7:19 PM

3 Replies

Tiny
CJ MEDEVAC
  • EXPERT
AND YOU HAVE CHECKED THE BRAKE FLUID LEVEL?

HAS IT BEEN LOW?

THE MEDIC
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Thursday, August 8th, 2013 AT 8:06 PM
Tiny
VICKIR
  • MEMBER
Yes. This all started last summer after I had the oil changed. Toyota changed the brake computer and a week later same problem again. Then toyota wanted to change master booster cylinder and I could not afford that. Well then the problem stopped. Even took it to another Toyota place and then ran the diagnostics on it and said there was no codes so it was ok. Then the first of July 2013 it was sitting in the hot sun all day while I work. Has come on 4 times in last 30 days. Each time after sitting in sun. After being in my garage and drive it no lights come on.
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Friday, August 9th, 2013 AT 8:20 AM
Tiny
CJ MEDEVAC
  • EXPERT
ON OTHER VEHICLES, I HAVE SEEN THE FLOAT INSIDE THE BRAKE FLUID RESERVOIR GET STUCK WHEN THE FLUID GOT LOW (THEN REFILLED). OR THEY BOUNCED IT AROUND A BIT

THE FLOAT/ MAGNET WOULD SORTA GET C. OCKED A LITTLE BIT IN THE TRACKS THAT IT TRAVELED IN

STICKING YOUR FINGER IN THE FILL HOLE WOULD GENERALLY DIS-LODGE IT

NOT KNOWING HOW HEAT MIGHT AFFECT IT.

BEFORE YOU DO ANYTHING. CAN YOU SEE THE FLOAT'S POSITION?

MAYBE IT'S STUCK, AND ON THE "VERGE" OF TURNING THE SWITCH ON. THE HEAT (EXPANSION) IS PUSHING IT OVER THE EDGE?

MAYBE YOUR FLOAT SINKS WHEN IT GETS HOT?

DOES UNPLUGGING THE RESERVOIR TURN IT OFF. OR IS SOMETHING ELSE IN THE SYSTEM TURNING IT ON?

THE MEDIC
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Friday, August 9th, 2013 AT 2:47 PM

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