Dinghy towing
Your vehicle is not designed to be dinghy towed (with 4 wheels on the ground) behind a motor home.

NOTICE:
To avoid serious damage to your vehicle
Do not tow your vehicle with four wheels on the ground.
See also:
If you lose your keys
New genuine Lexus keys can be made by your Lexus dealer using the other
keys and the key number stamped on your key number plate. ...
Immobilizer system
The vehicle's keys have built-in transponder chips that prevent the hybrid
system from starting if the key has not been previously registered in the
vehicle's on-board computer.
Never leave the key ...
Engine/Transmission/Drivetrain/Performance
The IS 250's 2.5-liter V6 engine delivers 204 horsepower at 6,400 RPM and 185
lb.-ft. of peak torque at 4,800 rpm. The Lexus IS 350's 3.5-liter V6 offers a
more potent 306 horsepower at 6,400 RPM ...
