See also:

Trailer Tongue Weight
• A recommended tongue weight varies in accordance with the types of trailers or towing as described below. • To ensure the recommended values shown below, the trailer must be loaded by refer ...

Horn
To sound the horn, press on or close to the mark. ...

Have the vehicle inspected by your Lexus dealer immediately.
Failing to investigate the cause of the following warnings may lead to the system operating abnormally and possibly cause an accident. Have the vehicle inspected by your Lexus dealer immediately. ...