Vented Seats Retrofit





Edit: Found the Seat Switch Panel and Seat Fans, is there a separate controller on the seat for these? Or is it just controlled through the switch?
Last edited by mike919; May 31, 2022 at 08:15 PM.








The power plugin is there in the seats, which most likely means they would be plug and play once the appropriate seat switch is installed.
Last edited by mike919; Jun 1, 2022 at 01:10 PM.
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Great thread.
Just FYI I have retrofitted factory ventilated seats to my X253 GLC. I purchased used seats from a car that had them installed from factory.
All I needed to do was connect the seats to my original seat modules under the seats, add the button in the door card and recode the ignition switch for option code 401 (ventilated seats).
They work very well, especially with the AC on. Admittedly I'm not in Florida, I'm in England. However, we've had some pretty hot summers lately and I'm often using the car for short journeys where it heats up quickly while parked, especially as it has the panoramic sunroof.
I will say that Mercedes has recently superseded the part number for the original fans and they are now significantly cheaper (£78+VAT here in UK for a pair of fans for the seat base) A0999060606
The thing that seems REALLY expensive is the factory seat foam that is specific to this option (around £350+VAT retail). There's also the seat backs with the grilles that are around £180 off memory (https://mercteil.com/mercedes-benz-a...are-part-ZEonN)
However, it wouldn't surprise me if all you need to do is cut out the holes in the middle of the regular seat foam. However these things seem less essential than the fans themselves.
Hopefully this is helpful to anyone else wishing to retrofit these.
Last edited by jd787; Dec 3, 2025 at 09:40 AM.







