Diagnostic procedure
Mazda 6 Service Manual: Seat Operation
1. Seat Slide
(Manual Seat)
To move a seat forward or backward, raise the lever and slide the seat to the
desired position and release the lever.
Make sure the lever returns to its original position and the seat is locked in
place by attempting to push it forward and backward.
(Power Seat) ...
Mazda 6 Service Manual: Cruise Control (Some models)
With cruise control, you can set and automatically maintain any speed of more
than about 25 km/h (16 mph).
WARNING
Do not use the cruise control under the following conditions: Using
the cruise control under the following conditions is dangerous and could result
in loss of vehicle control.
...