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Have the malfunction repaired immediately.
After taking the specified steps to correct the suspected problem, check that the warning message and light go off. ...

Automatic transmission
*: The fluid capacity is a reference quantity. If replacement is necessary, contact your Lexus dealer. NOTICE  - Transmission fluid type Using transmission fluid other than “Toyota Genui ...

If you lose your keys
New genuine Lexus keys can be made by your Lexus dealer using the other key and the key number stamped on your key number plate. ...