Driver seat air cooler stays on for 25 seconds

[Redcap]

My Audi A8L driver seat air cooler only stays on for 25 seconds.

I have checked all the connections to the back of the seat by disconnecting each component and the seat still goes off after 25 seconds for each.

I have disconnected the electrics to the seat on the floor under the drivers seat and the air cool system switch lights stayed on and don’t go off after 25 seconds when switched on.

I have removed the unit with the switched on and checked the back of it to see if any wires are kinked or damaged and can’t find any.

in short when the seat is connected and up and running the air cool system only stays on for 25 seconds, when the seat plug is disconnected underneath the seat the air cooler blue lights stay on and do not go off after 25 seconds.

Does anyone have any ideas as I think it is possibly the switch unit itself that needs to be replaced.

If anyone else has had this issues and has resolved this, I would love to know how.

Respectfully Simon

[Steve Q]

You've done a good level of diagnosis but if recommend a diagnostic check to see if any fault codes flag up. Could it be a sensor?