E-Class Coupe (C238) & Cabrio (A238) 2017 - E200, E220, E300, E350, E400, E450 [Coupes &Cabriolets]

Seat Swap

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Old Dec 30, 2021 | 09:43 AM
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2019 E450 wagon: 2019 BMW 430i: 2013 Chevy Traverse: (departed)2013 SL550 & 2019 E450 cab
Seat Swap

I posted this in the W213 forum as well, but I am on a quest: OK, I understand this is a first world problem, but here is my question: we just took delivery of a 'new' to us 2019 E450 4matic wagon. CPO with just 3,000 miles; love the vehicle, even the 18" wheels and Pirelli RF tires. We also have an E450 Cabriolet, awesome vehicle as well. Having both has created something of a conundrum in our house. The wagon has the standard seating package; and compared to the seats in the cabriolet, they are simply not as comfortable.

The discussion centers around finding a set of used cabriolet seats, and swapping them into the wagon. Seems simple IMO, but our MB tech guru is doing some research on the possibility of performing that swap as it involves more than just unbolting and bolting. Has anyone on this forum replaced the seats in a sedan or wagon? If so, what replacement seating did you use? OEM? Aftermarket? Thanks in advance!

So to the coupe / cab community: has anyone knowledge of any seat swaps that may have been done? Or perhaps one may have the odd set of front seats lying about the house, and wish to sell them? I know I am in unicorn territory with this pursuit, however the difference in the seating is substantial. I have my local MB Guru at work on the electrical / safety / specification compatibility; there has to be a way!
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Old Nov 10, 2025 | 08:23 AM
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E450 coupe 2021 SL550 2013
Did you ever do this? What was the result? Considering same in 2021 E450. Thanks
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Old Nov 10, 2025 | 09:16 AM
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The short answer is 'not yet'. I keep looking for some used seats out of an A238/C238 and cannot find ones that are just black. When I do find a set, I still plan to try it as I have to believe the modules would be the same for the S213/W213 as the A238. The quest continues.
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Old Nov 10, 2025 | 02:31 PM
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E450 coupe 2021 SL550 2013
Hi. I remember you from the SL forum, particularly the broken/spare wheels discussion. i have standard leather seats and was going to see if i could replace them with the contour and massage seats like we had in the SL. If i can do that then maybe the ones currently in my car are the ones you would want. Perfect condition. But first i have to find the SL seats and see if they can be put into the E450. lol.
Thanks.
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Old Nov 10, 2025 | 05:10 PM
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E450 coupe 2021 SL550 2013
Turns out simple answer is "NO"
No, Black Nappa leather Mercedes seats from another car will not go into a 2021 E450 without significant modification, due to differences in mounting, electrical connectors, and vehicle systems. While the E450 can be equipped with massage and contour seats, these seats are typically model-specific and are integrated with the vehicle's unique architecture.
Reasons why the swap won't work
  • Mounting: Seats are designed to bolt into specific mounting points in the floor pan of a particular car model, and these will not align between different Mercedes models.
  • Electrical connectors: The wiring harnesses for seat functions like heating, ventilation, massage, and multi-contour adjustments are different between models and are not directly interchangeable.
  • Vehicle electronics: The seats are electronically integrated with the vehicle's control modules. For example, the massage seat's electrical components will not communicate with the control system of a different model.
  • Safety systems: Seat compatibility is crucial for the vehicle's safety systems, such as airbags. Swapping seats could compromise the performance and safety of these systems.
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Old Dec 2, 2025 | 04:56 PM
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Pretty well ends my quest. But this is kind of what I had initially found out. I was just hoping that the A238/C238 swap; would require minimal 'engineering'. Thanks for the update. Guess I will keep riding the seat that came with the car, because the car is not leaving.
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