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+--- Thread: Can s90 seats be fitted to S60 (/showthread.php?tid=354)
RE: Can s90 seats be fitted to S60 - Eilert - 02-13-2025
(02-10-2025, 05:40 PM)AnttiH31 Wrote: Hi everyone!
I have a 2020 V60 with fully electric, heated memory seats.
I want to add ventilation and found a set of 2021 V90 seats.
The seats should fit right in but do I need to do ANY wiring work for the ventilation to work? I just want the ventilation, no need for side support/massage.
So just for the ventilation, do I just need to enable it through OrBit after swapping the seats in?
Also the new seats don’t have airbags in them (not blown, just removed). Can I just transfer the airbags from my current seats to the new ventilated ones? I called my dealer and they confirmed that the part number is the same.
yes. for ventilation with your config its only a cem config. hoever. ventilated seats do exist with massage som check if they have that to.
RE: Can s90 seats be fitted to S60 - AnttiH31 - 02-13-2025
(02-12-2025, 11:21 PM)IMAY2023 Wrote:I just got the seats. I first took off the back part to see if they were massaging or not. There’s only a few air lines present so there is none. I also called my dealer who checked with the parts cars VIN and it showed that they are ventilated (duh) but not massaging.Quote:-On the seat connector, are the PINs numbered on the plastic connector or do I need to find a pin chart of the connector to know which PIN is number 15?
Yes, the connectors are numbered but you will need to take picture and magnify it because they are very small.
Quote:-What kind of crimping pliers do I need to crimp the PIN connector to a wire?
I used small needle nose pliers. Those pins are not widely used, I couldn't find traditional multi crimping tool for it. Buying one just for that type of pin does not justify the cost of it.
Quote:-How did you route the wire from the drivers seat to the fuse box? I’ve not removed seats from my car yet so I have no clue on how the looms are routed from factory.
After you remove from seats, you can easily pull the carpet if you want. It really does not matter from where and how you route the wire. There is only one thing you must pay attention. Make sure that there is enough free length of wire left under the seat so that when you move seat full back and full up, the wire is not stretched. Route the wire from the connector (if you are pinning or from the tab point through the main main harness and tie the wire with a zip tie at the end of main harness where it goes under the carpet. Basically make sure that the wire you are adding at least same length of the main harness from the edge of the connector to the carpet.
Quote:-Looking at my cars owners manual, it says that Fuse 40 for seat massage uses a 5A fuse instead of 7.5A that I’ve seen on here. Which one is correct?
I used 5amp fuse as indicated in the VOLVO book. Both front left and right seats are using the same fuse. So, you can route one wire from driver seat to passenger and than tab it to the second wire that goes from the fuse box to the passenger seats. I used these fuse tabs with 5 amp.
Quote:-The PIN connectors you’ve mentioned previously on here (https://www.amazon.com/dp/B0CH15J4BJ?ref...asin_title) are listed for 0.50mm2-0.75mm2. You’ve advised to use 18AWG wire which is 0,82mm2. Does the small difference matter at all?
No, I used 18awg wire with those pins. You can also use 20awg if you like. If you are not feeling comfortable with pinning you can also use cable taps like these .
and had time to install the drivers side. I swapped the seat controller from my existing seat and when I took a look at the pins, my existing controller had more pins than the new one. So my existing controller had all the pins that the new controller had and a couple more. That was on the connector that had the most pins.
After the install I went to code. For the seat ventilation I first tried the setting ”ventilation drivers seat” as I haven’t yet swapped the front passenger side. That didn’t work. The ventilation setting didn’t pop up.
Then I changed it to ventilation driver and passenger, now the setting is visible and works. Memory also works.
But 1 setting doesn’t work, and that’s the 4 way lumbar. As the back of the seat didn’t have many hoses going in and out, I assume that the seat doesn’t even have the massaging parts installed. That begs the question, do I STILL need to run a power wire to the seat to get the lumbar to work even though the seat most likely doesn’t have side support which shouldn’t even make any difference to the lumbar!
Settings I now have:
-Ventilation for driver and passenger
-4-way lumbar adjustment (had this already)
-Side support driver and passenger (first I tried ”side support backrest” or something like that which didn’t work)
When I switch to the lumbar setting with the seat selector and try to adjust it, the relay only clicks and nothing happens ? on the passenger side with the original seat it works fine.
What should I do? I really hope it’s just a configuration issue or something.
RE: Can s90 seats be fitted to S60 - IMAY2023 - 02-14-2025
This looks like the back of the seat and according to the pipes there you should have side support and massage.
For the side support
You should put the settings 243 POWER ADJUSTABLE SIDE SUPPORT to 81 (both cushion, backrest driver and passenger). Even though the seat may not have on the cushion, that's the only way make it work. At least on my seats. For this, you will need to wire pin 15. Take a look at the seat's harness connector and check if you have the wire.
For the 240 LUMBAR SUPPORT > 4 way lumbar support.
RE: Can s90 seats be fitted to S60 - AnttiH31 - 02-14-2025
(02-14-2025, 01:28 AM)IMAY2023 Wrote: This looks like the back of the seat and according to the pipes there you should have side support and massage.
For the side support
You should put the settings 243 POWER ADJUSTABLE SIDE SUPPORT to 81 (both cushion, backrest driver and passenger). Even though the seat may not have on the cushion, that's the only way make it work. At least on my seats. For this, you will need to wire pin 15. Take a look at the seat's harness connector and check if you have the wire.
For the 240 LUMBAR SUPPORT > 4 way lumbar support.
This is a picture I found online of a seat with massage that has much more air lines. Since the massage feature has 10 massaging spots, shouldn’t there be a lot more hoses going inside the backrest like in this picture?
I have the settings you mentioned turned on but it doesn’t seem to be working.
I’ll check the seats connector.
Right now I only care about the lumbar support since it’s currently at the most out position which is really uncomfortable for my back.
But the lumbar support shouldn’t be connected to the side support feature and should work by itself right?
RE: Can s90 seats be fitted to S60 - IMAY2023 - 02-14-2025
As far as I know; if the seat has side support, the lumbar support is controlled by the seat contort module thus requires the pin15 power.
My s90 seats are like that.
RE: Can s90 seats be fitted to S60 - AnttiH31 - 02-14-2025
(02-14-2025, 05:49 PM)IMAY2023 Wrote: As far as I know; if the seat has side support, the lumbar support is controlled by the seat contort module thus requires the pin15 power.
My s90 seats are like that.
I compared my old seats to the new and you’re correct. The wiring is entirely different. I looked at the DTC’s and it shows codes for open circuit for the valve block and pump (makes sense) I compared the female seat connectors and the only difference is that the new seat has pin 15 and the old one doesn’t (also makes sense). I feeled around the back of the seat and my conclusion is that the seat has side support+4way lumbar but no massage.
But here’s where it gets confusing:
I bought the fuse robber things, put 2 5A fuses in it and plugged it into Fuse terminal 40. As I only have 1 seat swapped I crimped just 1 wire to the robber and routed it to the drivers seat. Since I don’t yet have the correct pins for the male side seat connector, I de-pinned pin 15 from the seat end connector and just wrapped the cable around it to test if the function would now work. Nothing happened. Pin 15 is a blue wire which goes to the back of the seat where it goes to the pump. I also tried to wrap the cable from the fuse box straight to the pin at the back of the seat but that did not have any effect either.
I unfortunately don’t have a multimeter to check if there’s power coming from the fuse box end or not but I will buy one tomorrow.
Is there something I’m missing here?
RE: Can s90 seats be fitted to S60 - IMAY2023 - 02-14-2025
Have you started the engine? The side support and massage is only operational when the engine is running.
RE: Can s90 seats be fitted to S60 - AnttiH31 - 02-14-2025
(02-14-2025, 09:15 PM)IMAY2023 Wrote: Have you started the engine? The side support and massage is only operational when the engine is running.
I did not. I just switched the ignition on and then tried the settings. I thought that it should work with only the ignition on since the lumbar works on the old passenger seat and the thigh support also worked on both seats.
I will try it with the car started tomorrow!
RE: Can s90 seats be fitted to S60 - IMAY2023 - 02-14-2025
Well on my replacement s90 seats, lumbar support does not work if the engine is not running. It might be also software difference between the modules.
Assuming that you have check if you are indeed getting power on the PIN 15. If still does not work, try with the other module.
RE: Can s90 seats be fitted to S60 - paunionutz - 02-17-2025
Can anyone know if the frame seat from s90 is the same with S60/v60. I want to change upholstery from my rdesign semi automatic seat, to a seat frame from s90 r design electric without memory