Can you look under the seat and tell if anything is moving?

 

 

Could be the track needs silicone, but had the same problem with mine. Click and hum but no movement. Replaced motors, all good. Not a tough project, a bit tedious.

 

You may find something has been dropped down the side of the seat jamming the motor drive, if you're lucky, otherwise it sounds like the motor has expired.

 

Could the gear bar be stripped? If the motor is working, but nothing is moving then it is either stuck or something isn't grabbing while the motor turns.

I am having a somewhat similar issue, except I can not hear the motor working. The seat will tilt, but it won't move back and forth. Anyone know where I can buy a new motor for the front-to-back adjusting function?

 

Had a similar issue, turned out a passenger had kicked the big connector that runs from the switch to under the seat (it was covered by a protective wrap). Connector on this disco didn't lock very well and had separated about 1/8"-1/4". Gave me intermittent operation of tilt, but no operation up/down, back/forward or lumbar. Cleaned it, put it back together, wrapped it with a little tape, all good. (of course this was after hours of tracing the circuit, cleaning the switches, etc.)
Jeffrey

 

^^^ all good suggestions. Mine ended up needing replacement.

 

is there a seat repair Manuel out in the world somewhere? Where is the fuse box for the seats?