E92 M3 seats in 335i Retrofit Help!

Greghole98 · 10-04-2018, 09:10 AM

Hey Guys I've just finished swapping out my electric, sport, non-heated, memory seats out of my 335i for M3 seats that are electric, heated, memory seats. I plugged them in and INPA and ISTA+ Recognize the new modules but the seats are only capable of moving forwards/backwards and the bolsters in/out. I cant move the seat bottom up/down and the backrest pitch angle. Any suggestions?

Bavarian Tech · 10-04-2018, 09:44 AM

What year is the m3 seats from ?
When I did mine, they were plug n play

Greghole98 · 10-04-2018, 10:00 AM

Quote:

Originally Posted by Bavarian Tech

What year is the m3 seats from ?
When I did mine, they were plug n play

Quote:

Originally Posted by Bavarian Tech

What year is the m3 seats from ?
When I did mine, they were plug n play

2013 m3 into 2008 335i

Sensible_ · 10-04-2018, 10:03 AM

Think you need to add: $494 to the VO/FA then code the JBBF???

Greghole98 · 10-04-2018, 10:04 AM

Quote:

Originally Posted by Sensible_

Think you need to add: $494 to the VO/FA then code the JBBF???

I'll try coding it in. just to the jbbf?

Sensible_ · 10-04-2018, 11:45 AM

Quote:

Originally Posted by Greghole98

Quote:

Originally Posted by Sensible_

Think you need to add: $494 to the VO/FA then code the JBBF???

I'll try coding it in. just to the jbbf?

I've never done this retrofit before. But as the heated seat buttons are on the climate panel, I guess the IHKA aswell.

After coding double check the JBBF trace file that 'sitzheizung' is 'aktiv'

Greghole98 · 10-08-2018, 01:28 PM

Still trying to get them working, any other ideas? I can hear a click when I try to move the seat up and down

pelon222 · 10-08-2018, 01:40 PM

check the pins on the connectors, when I swapped mine they were not working either, there was a couple of pins bent. I don't even know how that happened

Greghole98 · 10-08-2018, 01:46 PM

Quote:

Originally Posted by pelon222

check the pins on the connectors, when I swapped mine they were not working either, there was a couple of pins bent. I don't even know how that happened

The pins are different on the old connector there are 2 prongs coming out of the same pinhole and on the m3 seat there is only one. Also there are 2 additional circular connectors that have nowhere to plug into

lnxguy · 10-14-2018, 01:58 PM

Looks like you've got some wiring to do.

Greghole98 · 10-14-2018, 03:00 PM

Quote:

Originally Posted by lnxguy

Looks like you've got some wiring to do.

any ideas?

Emilime75 · 10-14-2018, 03:47 PM

Quote:

Originally Posted by Greghole98

Still trying to get them working, any other ideas? I can hear a click when I try to move the seat up and down

From the seat, or from elsewhere, like the fuse/relay box? Are you sure they were working before swapping them in?

smass · 10-15-2018, 08:59 PM

When I did my seat swap, my car only had one power and ground run per seat. The new seats required 2 power and 2 ground. When the extra power was not hooked up, some of the features did not work. Heat on one side and lumbar on the other or something like that.

Some of the extra wiring on the M3 seats will be for the active headrest which you don't need to hook up.

Greghole98 · 10-15-2018, 09:18 PM

Quote:

Originally Posted by Emilime75

Quote:

Originally Posted by Greghole98

Still trying to get them working, any other ideas? I can hear a click when I try to move the seat up and down

From the seat, or from elsewhere, like the fuse/relay box? Are you sure they were working before swapping them in?

Quote:

Originally Posted by Emilime75

Quote:

Originally Posted by Greghole98

Still trying to get them working, any other ideas? I can hear a click when I try to move the seat up and down

From the seat, or from elsewhere, like the fuse/relay box? Are you sure they were working before swapping them in?

Yes, I have driven the donor car and they worked, the clicking noise sounds like a relay click

Greghole98 · 10-16-2018, 09:27 AM

Quote:

Originally Posted by smassey321

When I did my seat swap, my car only had one power and ground run per seat. The new seats required 2 power and 2 ground. When the extra power was not hooked up, some of the features did not work. Heat on one side and lumbar on the other or something like that.

Some of the extra wiring on the M3 seats will be for the active headrest which you don't need to hook up.

Quote:

Originally Posted by smassey321

When I did my seat swap, my car only had one power and ground run per seat. The new seats required 2 power and 2 ground. When the extra power was not hooked up, some of the features did not work. Heat on one side and lumbar on the other or something like that.

Some of the extra wiring on the M3 seats will be for the active headrest which you don't need to hook up.

How did you add the extra pin

smass · 10-16-2018, 03:17 PM

Quote:

Originally Posted by Greghole98

How did you add the extra pin

For the big power and ground wires I just connected them together on the seat side of the harness. It has been 2 years and I have not blown a fuse yet. I was missing a smaller switched power wire for the pass side seat which I ran to the fuse box. The small pins were the same as the CIC and combox connectors so I have a few left over.

Greghole98 · 10-16-2018, 04:33 PM

Quote:

Originally Posted by smassey321

Quote:

Originally Posted by Greghole98

How did you add the extra pin

For the big power and ground wires I just connected them together on the seat side of the harness. It has been 2 years and I have not blown a fuse yet. I was missing a smaller switched power wire for the pass side seat which I ran to the fuse box. The small pins were the same as the CIC and combox connectors so I have a few left over.

Quote:

Originally Posted by smassey321

Quote:

Originally Posted by Greghole98

How did you add the extra pin

For the big power and ground wires I just connected them together on the seat side of the harness. It has been 2 years and I have not blown a fuse yet. I was missing a smaller switched power wire for the pass side seat which I ran to the fuse box. The small pins were the same as the CIC and combox connectors so I have a few left over.

what big wires? I see 2 circular connectors but theres nowhere to plug them into the car

10-04-2018, 09:10 AM	#1
Greghole98 Private First Class 12 Rep 105 Posts Drives: 2010 335i Join Date: Mar 2016 Location: Naples, FL iTrader: (0) Garage List 2008 BMW 335i E92 [0.00] 2001 BMW 740i [0.00]	E92 M3 seats in 335i Retrofit Help! Hey Guys I've just finished swapping out my electric, sport, non-heated, memory seats out of my 335i for M3 seats that are electric, heated, memory seats. I plugged them in and INPA and ISTA+ Recognize the new modules but the seats are only capable of moving forwards/backwards and the bolsters in/out. I cant move the seat bottom up/down and the backrest pitch angle. Any suggestions?
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10-04-2018, 09:44 AM	#2
Bavarian Tech Major 267 Rep 1,203 Posts Drives: 335i Join Date: Jan 2007 Location: Pittsburgh/Harrisburg iTrader: (15) Garage List 2006 330i [10.00]	What year is the m3 seats from ? When I did mine, they were plug n play
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10-04-2018, 10:03 AM	#4
Sensible_ Colonel 529 Rep 2,504 Posts Drives: 2008 E90 Join Date: Feb 2012 Location: London iTrader: (1)	Think you need to add: $494 to the VO/FA then code the JBBF???
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10-08-2018, 01:28 PM	#7
Greghole98 Private First Class 12 Rep 105 Posts Drives: 2010 335i Join Date: Mar 2016 Location: Naples, FL iTrader: (0) Garage List 2008 BMW 335i E92 [0.00] 2001 BMW 740i [0.00]	Still trying to get them working, any other ideas? I can hear a click when I try to move the seat up and down
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10-08-2018, 01:40 PM	#8
pelon222 Private 13 Rep 78 Posts Drives: E90 328i Join Date: Jun 2018 Location: Tucson iTrader: (0)	check the pins on the connectors, when I swapped mine they were not working either, there was a couple of pins bent. I don't even know how that happened
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10-14-2018, 01:58 PM	#10
lnxguy Lieutenant Colonel 357 Rep 1,723 Posts Drives: 2009 335D Join Date: Jun 2016 Location: Barrie iTrader: (1)	Looks like you've got some wiring to do. __________________ '09 335D
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10-15-2018, 08:59 PM	#13
smass Lieutenant Colonel 396 Rep 1,578 Posts Drives: 06 325i - 10 335i Join Date: Sep 2010 Location: Scottsdale, AZ iTrader: (1) Garage List 2010 E90 335i [0.00] 2016 F15 35i [0.00] 2003 E53 3.0 [0.00] 2006 E90 325i [0.00]	When I did my seat swap, my car only had one power and ground run per seat. The new seats required 2 power and 2 ground. When the extra power was not hooked up, some of the features did not work. Heat on one side and lumbar on the other or something like that. Some of the extra wiring on the M3 seats will be for the active headrest which you don't need to hook up. Attached Images
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