Lexus LS600hL Owner's Manual page 167

Seat return function linked to the door opening operation
The seat will return to the neutral position automatically when the door is
opened for easier entry and exit of the vehicle.
Returning the rear seat from the front seats
Vehicles without relaxation seat

The seat will return to the neutral
position while the button is pressed
and held.
Vehicles with relaxation seat

The seat will return to the neutral
position while the button is pressed
and held.
LS600hL_U(OM50D26U)
3-3. Adjusting the seats
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