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BMW 3-Series (E90 E92) Forum
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DIY Powered seat retrofit (WIP)
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01-13-2022, 03:38 PM | #464 |
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Drives: E70 E90 E91
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Garage List 2007 E91 328ix [0.00]
2011 E90 335d [9.50] 2013 E70 xDrive35d [6.17] 2009 E91 328i [9.50] 2016 F25 xDrive28d [0.00] |
woodpecka
I am sure this was answered before, but I could not find it. I have 2009 LCI E91 leather, non-sport, heated & lumbar support. Code:
459 Seat Adjustm., Electr. W. Memory Sitzverstellung, Elektr.mit Memory 488 Lumbar Support Driver/front Passenger Lordosenstuetze Fahrer/beifahrer 494 Seat Heating F Driver/front Passenger Sitzheizung Fuer Fahrer/beifahrer Code:
459 Seat Adjustm., Electr. W. Memory Sitzverstellung, Elektr.mit Memory 481 Sport Seats F Driver/front Passenger Sportsitze Fuer Fahrer/beifahrer 488 Lumbar Support Driver/front Passenger Lordosenstuetze Fahrer/beifahrer 494 Seat Heating F Driver/front Passenger Sitzheizung Fuer Fahrer/beifahrer Last edited by POBEP; 01-13-2022 at 04:18 PM.. |
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01-14-2022, 02:06 PM | #465 | |
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02-18-2022, 07:32 PM | #466 | |
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Drives: E70 E90 E91
Join Date: Mar 2016
Location: Christmas Valley, CA
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Garage List 2007 E91 328ix [0.00]
2011 E90 335d [9.50] 2013 E70 xDrive35d [6.17] 2009 E91 328i [9.50] 2016 F25 xDrive28d [0.00] |
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Gotta clean and condition it |
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03-01-2022, 03:15 PM | #467 |
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Drives: E70 E90 E91
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Garage List 2007 E91 328ix [0.00]
2011 E90 335d [9.50] 2013 E70 xDrive35d [6.17] 2009 E91 328i [9.50] 2016 F25 xDrive28d [0.00] |
The Sport Seats are super nice. My E91 feels like different (much better) car now
My replacement 2010 LCI sports seats were missing net bag. I noticed it after the swap. Word of advise If you plan to transfer rear panel with net bag (P/N 52109166908) over to new seats - do it when both seats are out of the car. Removing and then setting bottom panel clips with the seat installed in royal PITA. Also, clips can (and probably should) stay in the panel during removal. The panel can be removed with clips by pulling them out from seat frame using proper tools |
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03-05-2022, 08:21 PM | #468 |
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Today I retrofitted a power seat (driver only) to my 2009 LCI 328i from 2006 325i. Was able to get the pigtail from old car and swap pins into the original connecter. The head rest was missing and I had to swap headrest and the wiring attached to it, it didn't appear the donor seat had this wiring.
No lights and the seat works perfectly! I saw talk that the K-Can had to be hooked up or the seat would stop working. I did not experience that, is that because the seat is from an 06? As of now, I am not planning to hook up K-Can. |
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03-05-2022, 10:11 PM | #469 | |
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Drives: E70 E90 E91
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Garage List 2007 E91 328ix [0.00]
2011 E90 335d [9.50] 2013 E70 xDrive35d [6.17] 2009 E91 328i [9.50] 2016 F25 xDrive28d [0.00] |
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Passenger side holds pressure as expected. Going to swap both switch and lordosis pad, hope it will be easy. |
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03-06-2022, 03:23 PM | #470 | |
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Just kidding, seats stopped working. Tapped the wires from the idrive and all is good now.
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03-13-2022, 09:55 PM | #471 |
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e90 power seat question- Bolster power works all of the time but movement pwr doesn't
E90 power seat question -> Bolster power works all of the time but movement power is random.
First off, I have read a lot on this, and I really don’t think it’s the “sleep” thing because the power for the bolster motor works all of the time even when the seat movement power is not working. OK so this weekend I retrofitted a pair of e90 power sport seats into an “older” BMW sedan. I wired constant power to the Red wires (twisted together) for the motor and the bolsters on each of the seats. Same on the brown grounds. I used the cigarette lighter power + ground. The passenger side works perfectly. In fact, it doesn’t go to sleep and always works. The driver’s seat movement functions however randomly do not work. But the bolster power (again all twisted together) always works. I thought it might be the “sleep” thing that people reference, but even when I unplug the power and plug it back in, it doesn’t work. Please let me know your ideas/thoughts before I go and buy another driver’s seat. Thanks!!!! |
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03-15-2022, 09:49 PM | #472 |
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any ideas?
Hi
I am on my 2nd drivers seat and the motor is only working intermittently (lumbar works all the time) - passenger seats is perfect 2 reds twisted with + 2 browns twisted with - works perfectly for a few sec - but -then even when I unplug it, and plug it back in -- is doesn't usually work tomorrow I have a 12->5v thingy coming and will try and power the k_can_h with it -- but the adapter has a space for a ground in and out -- do I just use the same ground as the 12 v power? I bought a switch anticipating the time out -- but if plugin and unplugging the power doesn't work , I don't see how the switch would help thanks you so much in advance |
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05-30-2022, 06:47 AM | #473 |
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Could anyone potentially shed some light on the following that I haven't seen covered?
Upgrading from LCI Manual Sport Seats, to LCI Partial Electric Sport Seats with Heat. There is no need for K_CAN, so I have run an additional power, ground, PWM signal to the JBE and the additional small gauge wire into the fusebox at X11001 position 10 - to each seat. So my car-loom looks like so; However, when the new seats arrived, there is a pin in pin 9 on both seat connectors - something my car-side loom does not have. The seat connector looks like so; I'm going to run this in properly, back to the fusebox - but does anyone know what fuses I'm needing to plumb in? I have added fuses in 45/46 for what I believe is the seat heating modules (no seat modules on these seats). I cannot find any information about this - most retrofits need the car-side connector re-pinning from 9 to 4, not an additional in 9. Ideally I don't want to use tap connectors, I'm going to wire it in to the fusebox, as the car will be in pieces anyway. Any advice would be great |
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05-31-2022, 03:01 PM | #474 |
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so you have three consumers in new seat
lumbar support seat adjustment seat heating main positive seat heating ignition positive they may require separate wires because they are have different main fuses or relay to enable in different situations (for example heating will be not working if battery has not enough charge)
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Retrofits: Harman Kardon, High-beam assistant, Removable tow hitch. Auto-dim folding exterior mirrors. Lumbar support. Perfomance Brakes. |
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05-31-2022, 04:56 PM | #475 | |
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Lumbar - accounted for - pin 7 on the existing car loom. Seat adjustment - unsure - at present I am planning on using the 4.0mm2 wire I ran to fuse 45/46 (driver/passenger) for both heat and adjustment, as the on-seat loom cable gauges are much smaller than that for the main positives. Seat heating main positive - accounted for - part of new loom. Seat heating ignition positive - accounted for - part of new loom. What I'm struggling with is where to wire the additional (either pin 9 or 4 (pin 9 is heat, pin 4 adjustment) wire into in the fuse box. I can't see anything in any BMW documentation or diagram where there are 2 x high amperage feeds to the seat - the only references are "seat module/seat heating module" - nothing regarding purely seat adjustment. What would be super helpful is if someone with an LCI with partial-electric seats could fire over a photo of their fusebox, that might point me in the right direction! EDIT; Just to add - I've spotted another user earlier in this thread (page 11/12) in the same predicament - not knowing where to wire the additional pin to in the fusebox. I think he connected them together and used the one positive for both functions without an issue. It's a 30A circuit, which should be more than enough for the motors + heat together. Would be nice to do it the BMW way, but for lack of documentation, it's a bit difficult. Last edited by Nickdot; 05-31-2022 at 06:02 PM.. |
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07-20-2022, 12:54 PM | #476 |
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New Problem..
Here is my situation:
Original seats : full electric non-sport seats with memory and heated but no lumbar /inflatable bolster adjustment New seats: full electric sport seats with memory, heated, lumbar and with inflatable bolster adjustment. Everything is working beside bolster and memory since the original seats didn't had those options. I have looked at both connector (car connector and seat connector) and the only missing wire is PIN 7 (Red/black wire). What's needed to have the inflatable bolster adjustment to work??? Thanks! |
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07-20-2022, 02:17 PM | #477 |
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you need to
1. wire bolster to existing power to module 2. run additional wires from JBE to both seats to power bolster with separate fuses.
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E81 2007 130i 6cylinder Montego blue
Retrofits: Harman Kardon, High-beam assistant, Removable tow hitch. Auto-dim folding exterior mirrors. Lumbar support. Perfomance Brakes. |
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11-02-2022, 09:11 AM | #478 | |
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Last edited by Yoshi1127; 11-02-2022 at 02:35 PM.. |
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11-06-2022, 11:21 AM | #480 |
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yoshi1127 -
Take a look at this... It uploaded here... Each timer can be programmed - meaning the Kcan timer is set to 3 - 4 secs per pulse (constant on mode) and the seat heater seat timer is set for 10 mins of heat them off mode (if you hit the trigger switch it starts another 10 min cycle). There is only one timer for the Kcan since the passenger seat doesn't have that computer and 2 timers for heat so they operate separately. Each have 30a feeds. run through the relays. Very crude diagram - so don't laugh! |
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11-09-2022, 11:43 PM | #481 |
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Anyone seen this?
E91 with base (no power/heat) seats from factory. Previous owner installed power/heated M3 seats, and didn't complete the wiring. I added the heated seat switches, VO coded 494, and connected the K CAN bus wires to the driver's seat- I'll do the passenger in the next few days. With the VO 494 coded and no K CAN connection the leds on the buttons would light up briefly and then turn off. No relay click, no heat on either side. With the K CAN connected to the driver's side, the heater button lights up for 5-10 seconds, the relay clicks on and stays on unless I turn the seat heating off, but the leds blink on and off at ~5 second intervals. The seat heats, but not to full sunburn mode. The heat level is adjustable, and the seat positioning controls work as they should throughout a drive (they would stop working after 30sec or so without the K CAN connection). The blinking lights are not accompanied by a relay click, and they don't blink at regular intervals- it could be 3 sec on, 7 off, or 6 on, 6 off- generally along intervals like these. Also, the position adjustment is available whether the lights are on or off- it does not seem to be an intermittent K CAN connection. I can tug on the bundle of wires and shift my weight around in the seat without affecting whether the lights are on or off. Searching leads me to: 1. Battery? it's getting weak, it cranks slower than last year on cold mornings. I do have some bulb warnings that aren't making sense. 2. K CAN wiring sensitivity? I spliced heavier gauge twisted wire between the factory wiring and a new connector at the seat, then back to lighter gauge wire at the connector- just stuff I had handy. It it super sensitive to this? 3. No K CAN connection at the passenger seat yet? Thanks!
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My 2008 E91 - https://www.e90post.com/forums/showthread.php?t=1897460
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11-10-2022, 01:55 PM | #482 | |
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01-25-2023, 11:28 AM | #484 |
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I wanted to contribute back to this thread as I have found it incredibly useful in retrofitting not only E92, but F32 seats into my E30. Fun fact, for those who don't know, they use the same bolt pattern.
You can replicate the CANBUS signal using a simple 555 timer; this is what others have done, and so have I. |
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