When putting car in reverse, transmission disengages, then gores back into gear on 1998 Lexus LS400

After starting car, transmission disengages when in revers after 7 seconds, then 15 seconds later, goes back into gear. When put into drive, sales thing, disengages, then goes back into gear to drive. Afraid to drive to far. It it the selenoid shift. Have not had diagnosed for error code. Thank you

by in Kennesaw, GA on March 16, 2014
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1 answer 2 comments
ANSWER by , March 16, 2014
Check the fluid level while the engine is running, then see if there is any error codes, maybe go to AAMCO for a free diag and estimate.
COMMENT by , March 18, 2014
Will do, many thanks.
COMMENT by , March 18, 2014
U bet and good luck