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Down the Rabbit hole - Adding Memory Seat Switch

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11K views 29 replies 10 participants last post by  Echo5golf  
#1 ·
So lots of internet searching and not much helpful comments....I thought hey give it a go and at least everyone will learn from the experience. (and hopefully help along the way.)

I got a cheap XA50 Door card with memory switch and window switches etc.
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Off Ebay
First observation is that the Switch holder(Red 2 in image) is plastic welded(Red 3 in image) into the Door card....so if you like me have a Red stitching...this gets a little more tricky but not imposable to swap over.

You need the Switch holder(Red 2 in image) as the switch clips into the plastic slot holder and cutting and adding the switch without this holder although possible could be tricky to brace/hold.

SO that the easy part out the way.....

Wiring and Body Control unit(BCU) etc...is the next journey.

I can confirm in my right hand drive Suzuki Across(RAV4prime) UK version the Door Wire harness does not contain the Memory Switch wire. Was looking to see if I can get a wire harness off ebay...but not winning just yet.

I'm hoping that someone on here with TIS access can get a wire pinout for Part Number: 82152-42J21 which I'm guessing based on price on parts.toyota.com is the Left hand drive version that has the memory switch option.

It would be good to know if this has dedicated wires going all the way back to the BCU or if it just connects into the Cam-bus somehow (Help would be greatly appreciated.)

Regards
 

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#2 ·
Following.

Memory seats has typically been one of the most difficult options to add to a vehicle. (But one of the most desired in my case) My preferred options are memory seats and no sunroof. I don't think any manufacturer makes that combination.

Do you know if the seat position sensors are included in your vehicle as well, or will they have to be added too?

Have you looked into the key fobs to see if your current ones are different from XSE Premium models?
 
#3 ·
I have attached wiring diagrams for power seats with and without memory. It states that they are for left hand drive so you might have some difficulty there but the information should be more than what you have now.
 

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#5 ·
Update: 2020 Suzuki Across - UK does not have ECU in the SEAT. (aka position sensor)

In other news Techstream connects to Suzuki Across (AXAH5x) and puts a *Driver Seat which tells you it can't talk to the Seat ECU.

So I will be looking for a 2020 Rav4AX50 - Excel Seat in the uk via Ebay (ÂŁ150-250 ish....will update on the Door Switch wires this weekend.

Hope you enjoy this journey. Even if it ends in Failure... :)
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#11 ·
Yay….it was just a simple case of swapping the seat.

Techstream now now sees the seat ecu.

Everything on the seat works…heating,movement, seat belt detector…:)

next step door wires and as I don’t have the wire harness …I’ve traced them to the JG1 connected.
 

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#15 ·
Hi Espos, not had much time. I had a quick go at following the pin-out of the left hand drive door wire diag above for the switch and thought I got translated the right pins as they seemed to correspond to empty wire sockets, but these didn't seam to work.....or at least didn't didn't work (ign -on door closed.) I didn't have any more time to diag.

Planning to plug in the techstream and see if the buttons turn on and off if they reflect in techstream....but haven't had a chance.

Too be continued. :)
 
E
#16 ·
RockingMan said:
Hi Espos, not had much time. I had a quick go at following the pin-out of the left hand drive door wire diag above for the switch and thought I got translated the right pins as they seemed to correspond to empty wire sockets, but these didn't seam to work.....or at least didn't didn't work (ign -on door closed.) I didn't have any more time to diag.

Planning to plug in the techstream and see if the buttons turn on and off if they reflect in techstream....but haven't had a chance.

Too be continued. :)
Click to expand...
Are you able to at least install the memory seat frame and use it as a power seat (without memory)until you complete the install of the memory function ?
 
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#21 ·
the connector that connects to the memory seat switch is in the main body ecu. It actually goes from the main body ecu, g43 connector, then it goes around and gets rerouted to JG1 junction block. I can't seem to find JG1 easily, so I think g43 is the easiest path to do the upgrade and to get the memory switch working.

g43 connector

pin 7 memory set button

pin 8 memory position 3

pin 9 memory position 2

pin 10 memory position 1

Since it is a toyota/suzuki and not a lexus, only the pin 7, 9, and 10 will be pre-wired.

Since you don't have the memory seats, the harness won't come with wires pre-wired through the driver side door, it's best to just connect it straight through to the G43 connector instead of following it to the junction block "JG1".

I'm actively doing the swap on my rav4, however, I do not wish to splice or cut my G43 connector since it's really cramp working in there, so I am in the process of getting the connectors made. Apparently Toyota only has the female version for sale and not the male version, since the male version is only found on the main body ecu itself. So I ordered a molding to be made from a Chinese company, so we'll see how that goes. 30-45 days waiting period for a sample. After that I can make an adapter to avoid cutting wires, and also insert another wire into pin #8 to get the 3rd memory position.
 

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#29 ·
Small discussion about adding power memory seats for 5th gen 2019-2025 rav4 xle and up.

Unfortunately, it will not work with le models. You need to have OEM power seats to have the correct harness for the seat to connect to the canbus network.

Along the way, I also discuss the 12.3 digital speedometer addon I previously did and how it's running. Adding a 2nd 12v battery upgrade.

Additional spots to add oem style buttons. 360 camera system, only works pre refresh 5th gen.

Adding powered passenger seat to the rav4 is probably the next upgrade/modification I would do.

Basically any modification that you can do that isn't easily done, I'm trying to find a way to fully unlock the rav4.

If someone with a limited rav4, or a rav4 with reverse turning lane assist, if you ever remove your rear cargo door trim,
Can you snap a shot of the wiring?

The reverse camera has a 4 pin version or an 6 pin version, I suspect if you supply the 2 missing pins, those of us without reverse turn lane assist on the reverse camera might be able to get it.
I'm trying to decipher the schematic, but it's all over the place.
 
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