A4/S4 memory seat function retrofit

jammy78

Registered User
Hi all,

I'm planning to retrofit drivers memory seat function - I've read a handful of posts relating to S5 B9 Sportbacks and am I right to assume the A4/S4 will be exactly the same?

There not much detailed info all in one thread, so I'm going to update this as I go along.

My car: 2018 S4 Avant

This is what I understand is required, please correct me if wrong:

Under driver seat module : 4M0959760 - £75 ebay sourced from US
Memory door buttons : 8W0959770 (5PR) - £95 (lllparts) - insane cost for this part, dealer wanted £135!
Replacement seat controls switch : 8W0959748A - £75 (lllparts)
Bracket for module : 8W0959730 - £14 (dealer)
Door trim (with ambient lighting QQ2 option) : 8W2959518G - £75 (dealer)
Seat back wiring : 8W0971369R - £28 (lllparts)
Seat frame wiring : 8W0971366EA - £41 (lllparts)
I'll need to make a custom wire to connect the door switch to the door module.
Also I'll to connect the seats to the CAN under the rear seat.

Regarding all the wiring, I'm thinking of getting the kit from AliExpress, this should contain everything required (£65ish)- I'll update once I decide.

I've done multiple retrofits before but replacing the wiring in the seat is something I'm not looking forward to, especially when there's no info online about it - if anyone has seen a guide, I'd be most grateful.

Cheers
 

Dave Thornton

Registered User
Sounds like a huge amount of cost/time. We share "my" S4 and have found that we can get away with just adjusting the front-back setting (plus the interior mirror).
I retro fitted "memory seat functionality" this way for free: :)

1625670375638.png
 

Richn83

Registered User
Not sure if the below will help but on my21 S4 I've got the following module and coding for memory seats.

I've pasted door electric as well as I once retrofitted some folding mirrors to a golf and memory mirror function was also door controller related on that platform and you had to have the right version that supported it, might not be the same ok these but you might need the coding.
-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J136) Labels:* None
Part No SW: 4M6 959 760 HW: 4M4 959 760
Component: MEM-FS 009 0060
Serial number: 00000439101714
Coding: 01781A000000B0010003010101010000000000000000000000000000004000
Shop #: WSC 06335 790 00001
ASAM Dataset: EV_SCMDriveSideCONTIAU736 006013
ROD: EV_SCMDriveSideCONTIAU736_AU37.rod
VCID: 7BA20C1F836BE4E3DA1-802E

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386) Labels:* None
Part No SW: 4M0 959 793 N HW: 4M0 959 793 N
Component: TSG FS 011 0390
Serial number: 0000440866109
Coding: 005D8A205201008000011032
Shop #: WSC 06335 790 00001
ASAM Dataset: EV_DCU2DriveSideMAXHCONT 001005
ROD: EV_DCU2DriveSideMAXHCONT_AU49.rod
VCID: 49CEA6D79937867318D-801C

No fault code found.
 
Would love to hear how you do with this. I considered the kufatec kit but that was closer to a grand, ended up getting a car with it spec'ed but not having to wait for it to come up on the used market would have been handy!
 

jammy78

Registered User
I'm nearly there with this retrofit. Just need to tap into the correct CAN wires and then I should be able to code the seat.

I do have a concern, after replacing the wiring, the seat functions but when I move it forward & back, it stops after a couple seconds (whilst still pushing the switch). Hopefully this is will resolve itself after I'm able to code the seat - the module is from a LHD, so might be the reason or the new controller.....

I'll update this when completed as I have a few "lessons learnt".
 

jammy78

Registered User
Not sure if the below will help but on my21 S4 I've got the following module and coding for memory seats.

I've pasted door electric as well as I once retrofitted some folding mirrors to a golf and memory mirror function was also door controller related on that platform and you had to have the right version that supported it, might not be the same ok these but you might need the coding.
-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J136) Labels:* None
Part No SW: 4M6 959 760 HW: 4M4 959 760
Component: MEM-FS 009 0060
Serial number: 00000439101714
Coding: 01781A000000B0010003010101010000000000000000000000000000004000
Shop #: WSC 06335 790 00001
ASAM Dataset: EV_SCMDriveSideCONTIAU736 006013
ROD: EV_SCMDriveSideCONTIAU736_AU37.rod
VCID: 7BA20C1F836BE4E3DA1-802E

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386) Labels:* None
Part No SW: 4M0 959 793 N HW: 4M0 959 793 N
Component: TSG FS 011 0390
Serial number: 0000440866109
Coding: 005D8A205201008000011032
Shop #: WSC 06335 790 00001
ASAM Dataset: EV_DCU2DriveSideMAXHCONT 001005
ROD: EV_DCU2DriveSideMAXHCONT_AU49.rod
VCID: 49CEA6D79937867318D-801C

No fault code found.
Many thanks for this, as I just used your coding for 36 seat module and now it works perfectly. Granted, I got a couple faults in VCDS but I think it's probably due to the module coming out of a A4 and not S4, so the calibration setting are likely to be different (different seats) - it has no effect on seat operation, so I'm not concerned.

Anyway, the seats work and so does the memory. I'll write something up when I get a chance.

People with memory from factory, do you have any options in the MMI regarding the seats (other than easy access)?
 

gregpot2000

Registered User
Hi there.

I have memory from factory.

I don't think even Easy access is standard, I turned it on with obd11

I think the only option there is something like store position to key or similar.

I don't have the manual to hand, but should describe all the possible options in there to check I would have thought?

Sent from my SM-G998B using Tapatalk
 

Richn83

Registered User
Glad the coding helped, not really looked at mmi much for seats will take a little ok next time I'm out there.

Good work on the retrofit that's a serious job! Look forward to a write up see what's what!
 

jammy78

Registered User
Hi there.

I have memory from factory.

I don't think even Easy access is standard, I turned it on with obd11

I think the only option there is something like store position to key or similar.

I don't have the manual to hand, but should describe all the possible options in there to check I would have thought?

Sent from my SM-G998B using Tapatalk

I actually had the "Easy access" in the MMI but didn't have memory seats, so didn't do anything - I think this is the norm in all S4?

I've played around with the coding and now get the message pop up when pressing the memory seat buttons but for the life of me can't get the option you said - store position to the key. This is going to bug me.... time for some more googling
 
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