Lit-up “AT OIL TEMP” light on the dash of a car indicates that the automatic transmission fluid temperature has exceeded the tolerable point. If you don’t address the issue on time, your transmission will act up in the middle of nowhere. Therefore, if your Subaru Forester "AT OIL TEMP" light is flashing, get it tested by a certified car mechanic.

1. What Causes AT Oil
Temp Light To
Come On In Your
Subaru Forester?

2. Simply put, a lit-up “AT
OIL TEMP” light is a sign
of transmission trouble.

3. It signifies that your
automatic transmission
fluid (ATF) temperature
is too hot.

4. What is ATF and what
does it do?

5. ATF is the lifeblood of your transmission.
Its job is to do the following things:-
Lubricate the moving parts
Prevent premature wear and tear
Inhibit oxidation and corrosion
Prevent transmission overheating
Maintain optimal fluid pressure
Prevent sludge and rust build-up

6. If something is off with
the ATF, your
transmission will run
rough and seize up.

7. To prevent this from
happening, your car
comes equipped with a
set of sensors and
computers.

8. If they detect anomalies
with the ATF, they will set
off the "AT OIL TEMP"
light to warn you of the
problem.

9. Listed below are a few reasons why
your Subaru “AT OIL TEMP” light may
come on.

10. Is your “AT OIL TEMP”
light on?- Know the
reason

11. Low ATF

12. The most obvious cause
of “AT OIL TEMP” light
illumination is low ATF.

13. Running low on ATF will
make your car
transmission run rough.

14. It would prompt the
TCM to set off the “AT
OIL TEMP” light on the
dash of your car.

15. Contaminated ATF

16. Another common cause
of “AT OIL TEMP” light
illumination is dirty ATF.

17. Therefore, check the ATF
quality daily and if
necessary replace it.

18. Rough Driving Habit

19. Poor driving habits can
cause your transmission
to act up.

20. When the TCM finds out
about the problem, it
would activate the “AT
OIL TEMP” light to warn
you about the problem.

21. Final Thoughts

22. Illuminated “AT OIL
TEMP” light is a sure sign
of ATF overheating.

23. It is a cause of some
concern and should
never be
underestimated.

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