Prius CT200H Passenger Seat Upgrade

I have searched and searched, but could not find any guide on how to swap out a non heated manual Prius passenger seat to a CT200H manual heated seat. It sounds straight forward, but it is not as you would think.

After you disconnect the 12 volt battery and hybrid battery safety plug, you can start unbolting the seat.

After seat bolts are removed, you can tilt back the seat to unplug the two wiring connectors. One is is the yellow airbag connector and the other is the seat sensor/seat belt clip connector.

Once everything is disconnected, then you can remove the seat out of the Prius. BE CAREFUL not to scratch or nick any of your interior with the bottom seat rails.

Once the seat is removed, compare the original Prius seat to the donor CT seat. I found out that my donor CT seat did not have the same seat sensor/seat belt clip connector as the Prius did. See pictures below.





I ended up having to swap the whole seat sensor/seat belt clip connector from the Prius seat to the CT 200H seat. It wasn't hard. It was just tedious making sure not to break any clips. I did verify that the seat sensor control unit box underneath the seat was the same part number. So it is compatible to swap the harness over.

Here's is the harness from the CT 200H seat, but they both look alike except for the double connector for the seat belt buckle clip.



This is the "Computer Occupant Detection" box. Both the CT and Prius seat boxes were the exact same.



You might be able to just switch the actual seat belt clip, but I didn't try that, as it would leave one loose connector under the seat. I didn't want any problems after installing it.





After swapping the seat harness, it is now plug and play into the Prius. After plugging in and bolting down the seat, I reconnected the 12 volt battery and installed the hybrid battery safety plug back in. Powered on the car no lights, no warnings. Sat in the seat The "Airbag ON" light came on and so did the fasten seat belt light. I fasten my seat belt, and it went off. All works like factory.

I have not messed around with the heated seat function. That will be in the future and I will give an update when that is completed. The seat heater is a different plug altogether.

I hope this will help those who would like to install a CT200H passenger seat into their Prius. I bought both driver's and passenger CT seat so that it would match. Please let me know if I missed anything. Thanks.

 

Yes. Sorry, it was late last night, so wanted to get a better picture today. Getting some new rubber put on the Prius now, so I will post the pictures this afternoon.

 

Here's the before:

 

Here's after. I still have to condition the seat a bit more, but looking good.

 

The Lexus seat had the 8 pin connector and the Prius has the six pin connector. The difference in the main plug for the seat, is because of the seat belt plug as shown in the last two pics. I'm not sure why the Lexus has a two plug configuration for the seat belt buckle clip, other than another sensor or something, because the Prius only has the one plug for the seat belt buckle clip. All I know is that it is compatible to swap the seat belt/seat sensor harness over from the Prius. And it works fine, so. Works for me.

 

For the seat heater, I'm going to be using the empty face plate holes on the driver's side, since I took out the dummy plate where the factory seat heater buttons would go. I put my Android Auto connector there. It looks factory too.

 

Cool. I was wondering about the seat belt clip, but thanks for the info. Glad I swapped it over too before I found out the hard way!
Did you also do the driver's side seat to and was that included in a thread on here? If so, could you post it here as I could not find one anywhere. The only one on seat swaps I found was only for the driver's side that was done in 2020 and the wiring to a base model Prius wasn't explained very well for a CT200h seat. I'm trying to figure the wiring out on drivers side as I found the power and ground, but I'm only getting power to the seat motors and the lumbar and lumbar switch. But I haven't found the second positive the CT seat uses. The lumbar works, but not the seat motors. They have power like i said, but I believe the switch (which is separate from the lumbar switch) I don't believe is getting power. Could you give me some insight on this?

 

I'm doing mine the same way. Passenger side was first, then drivers side is next. I hotwired all three motors and they work, so I'm going to replace the switch and that should fix it.

 

No, I'm not wiring it without all the fuses and relays and such. I don't want the car to burn down either. @Tombukt2 recommended that I look for the factory plug from the wiring harness since they were all wired for power seats. It's just whether they got them or not, that was a different story. I am waiting for the seat switch to come, once I verify that works, I will then find that factory plug.

My seats are 2011, so it is real leather. Which I agree with you on the nuluxe stuff. It peels.