The transmissions will not shift gears IF your fluid is low as a safety
device to protect your transmission. I'm not sure, but it may need a
reset if it did run low. Was there any evidence of a drip or leak? You
should notice it if you park in the same spot like your garage. If
there is evidence of leakage, clean it up. Put some regular motor oil
and it should clean up the transmission fluid. Then using cat litter,
clean up the motor oil. Check the floor after parking it there a few
days. If there is new oil drippings, you have some issues and may
be low on fluid again. Have your mechanic check if there is a reset
or something that needs to be set after you had run it with low fluid.
My wife accidentally knocked the transmission into low gear and
drove it a few miles on the freeway in low. She noticed the RPMs
were very high and the speed was only 50. She pulled off and
called. I had her start the car, put it in gear and made sure the
indicator was showing "D" on the dash. She then drove home
without any problem, but later the next day, the transmission
dumped all the fluid on our floor. I had the bottom pulled and
changed filters, flushed the trans, and new fluids and gaskets put in.
No problems after 20K miles.
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