[SocomCA]

Originally Posted by M_Bimmer

THe few pictures of the connectors look correct, but most certainly, not all the connectors are shown, but for $40, you can't go wrong.

Okay thank you!

Do you know if the wiring for the rear heated seats are there because i read that the wiring to the heated seats has to also be changed during this 4 zone climate control retrofit?

Also do you have the wiring diagrams?

[TEGLAS L]

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[TEGLAS L]

Originally Posted by SreeM

Okay thank you!

Do you know if the wiring for the rear heated seats are there because i read that the wiring to the heated seats has to also be changed during this 4 zone climate control retrofit?

Also do you have the wiring diagrams?

Hi
Unfortunately, I don't have a wiring diagram, I haven't gotten it yet!

I'm a bit worried about the two different rear climate controls (fan and fanless), since i was originally without a fan, will it work with the fan version, will it be programmable?

Thanks

[kusay]

Is it possible to add the controls to have them act as a mirror of the front?
so basically keep the 2 zone I have but be able to control it from front and back?

[SocomCA]

Originally Posted by M_Bimmer

From realoem (assumed a 2016 F10 550 Production date of 8.2016 and black interior):

- 64119290824 4-zone Distribution housing, upper (qty 1)
- 64119241198 4-zone Distribution housing, lower (qty 1)
- 64119166109 4-zone Distribution housing, temp sensor (+2 more required)
- 64118319037 4-zone Distribution housing, actuators (+5 more required)
- 64229166889 4-zone front left vent (qty 1)
- 64229166890 4-zone right vents (qty 1)
- 64229166891 4-zone center vent (qty 1)
- 64119311853 4-zone Blower, rear (qty 1)
- 51169206796 4-zone center console adapter plate for air ducts (qty 1)
- 64227213299 4-zone Air duct, B-pillar, inner left (qty 1)
- 64227213300 4-zone Air duct, B-pillar, inner right (qty 1)
- 64229173393 4-zone Air duct, B-pillar, outer left (qty 1)
- 64229173394 4-zone Air duct, B-pillar, outer right (qty 1)
- 64229148093 4-zone Air duct, rear compartment, rear left (qty 1)
- 64229148094 4-zone Air duct, rear compartment, rear right (qty 1)
- 51437297923 4-zone B-pillar trim, left black (qty 1)
- 51437297924 4-zone B-pillar trim, right black (qty 1)
- 64227211887 4-zone B-pillar vent grill, left black (qty 1)
- 64227211888 4-zone B-pillar vent grill, right black (qty 1)
- 51437325367 4-zone B-pillar duct (qty 2)
- 51437325342 4-zone B-pillar duct bracket (qty 2)
- 51477343070 4-zone floor carpet, rear, black (qty 1)
- 61319290751 4-zone rear controller w/ seat heating, w/o ceramic knobs (qty 1)
- 51169206729 4-zone center console, storage compartment (qty 1)
- 51169288913 4-zone center console w/ rear b-pillar vent holes (qty 1)

1. You will need to use 8 of your own actuators, need a total of 13, but this is cheaper to buy if you buy separately, but it's less than $200 from eBay for the 1st 4 part numbers, bought as a complete assembly and included the correct wiring harness (above list does not include distribution box harness)

2. The last item, center console, can be modified by cutting out the plug plate, so you don't need to buy, but I purchased the center motor, center tray, rear vent, rear controller, and center console as a complete unit. You'll need to reuse your trim and arm rest from your vehicle

3. The list of items does not include the odd parts, like 10mm plastic trim nuts, tray inside center console, extra screws, and/or any plastic trim parts you break when doing this mod

4. If you get all the hardware installed, it won't work until you VO code for 4-zone '4NB'

Your biggest issue will be the wiring....w/o it being pre-fabricated (pulled from an OEM harness), then you'll need to be able to read 'newTIS.info' really well, and be able to crimp wires and assemble your own connectors.

Never took my whole interior out before, so the three full Saturday's required to pull everything out, was 2/3's learning...did it twice to troubleshoot codes, and it took only 4 hours to pull everything out except carpet (front seats, rear seats, center console, complete dashboard)

Good luck.

I just realized, you didnt include

Auxiliary heater, electric, left: #64119217997
Auxiliary heater, electric, right: #64119217996

https://www.realoem.com/bmw/enUS/sho...48#64119181331

Did you install these too?

[M_Bimmer]

Originally Posted by SreeM

I just realized, you didnt include

Auxiliary heater, electric, left: #64119217997
Auxiliary heater, electric, right: #64119217996

https://www.realoem.com/bmw/enUS/sho...48#64119181331

Did you install these too?

Definitely missed those on the list, and yes I did install them.

They have both the heating elements, and temp sensors in them...so those are necessary for error free factory operation....

Good catch.

[SocomCA]

Originally Posted by M_Bimmer

Definitely missed those on the list, and yes I did install them.

They have both the heating elements, and temp sensors in them...so those are necessary for error free factory operation....

Good catch.

okay, thank you for confirming!

Did you take pictures of your install during the install?

Also do you know if the rear screen controller will work without the hvac install? i want to hold off on the hvac install until later and plan on installing the center console blower motor + climate controller with screen + foot well sensors and wiring. Will i be able to control anything with the climate controller without the 4 zone hvac change??

I don't plan on doing the b pillar install or carpet change

[Napas]

Sorry need todo a question

Its extremely hard to find Interior Heaters 2hand- Distribution housing, a/c unit, lower 64119241199


Searching for F10/F11 with 4 Zones, I have been finding that a lot have 11 actuators instead of 13.

With 13 i could only find one of endless weeks searching. - They are not expensive 50-100€, the transport is expensive +100€

This two are controlled by the top actuators. - 11 Actuators





M23 M22


But i can also find in TIS that F01 + F02 + F07 had M22 + M23 = 13 Actuators.

Confuse there are 2 versions of 4 Climate Zones?



The other point is
For F10/F11 LCI the Distribution housing, a/c unit, lower that supports the actuators is the following
Autom. climate control with 4-zone ctrl S4NBA=Yes
Distribution housing, a/c with preheater 1 03/2013 64119241199



The only Cars compatible are F06 Grand Coupe



If I try to buy a brand new Distribution housing with 4 Zones, it comes with support for 11 Actuators not 13.

But

If we look at the actuators needed


Maybe we can assemble 13 instead of 11 and all i need todo is adapt the wiring.

https://www.newtis.info/tisv2/a/en/f...ion/1VnbhzL6Ge

[M_Bimmer]

Originally Posted by SreeM

okay, thank you for confirming!

Did you take pictures of your install during the install?

Also do you know if the rear screen controller will work without the hvac install? i want to hold off on the hvac install until later and plan on installing the center console blower motor + climate controller with screen + foot well sensors and wiring. Will i be able to control anything with the climate controller without the 4 zone hvac change??

I don't plan on doing the b pillar install or carpet change

I did not take pictures of my install....outside of a single picture that showed the whole interior stripped out, which won't do anyone any good.

The rear HVAC controller (FKA) is a slave to the front HVAC controller (IHKA), and needs to be coded for it to function 100%. Not doing so will have unpredictable operation, so not sure I can provide a definitive answer, but since the adjustments in the FKA is done for flap adjustments, which is controlled through the IHKA, minimally you may not get the intended air flap operation.

Leaving off the B-pillar HW will have almost no ill effect on the system. I wish I hadn't done it myself, but since I did, it's staying installed.

[SocomCA]

Originally Posted by M_Bimmer

Miniminally:

1. 4-zone distribution box under the dashboard
2. Center console w/ rear motor
3. Center console rear vent control unit and vents
4. Front center vents assembly w/ two temp thumb wheel version
5. Front left and right dashboard vents for 4-zone
6. Rear right and left floor vent stratification + heater + temp sensors
7. Wiring harness from front ventilation controls to items 3, 4 & 5
8. Wiring harness from item 4 to both item 2 and to item 6
9. Code for 4-zone

Note 1: Item 5 will require heavy durty wiring from the rear fuse box for the heater elements

Note 2: Rear controller HKA also supports rear heated seats, so you'll either need to wire your current non HKA controlled version to the HKA, or leave it disabled

Note 3: The disassembly of the center console to remove the front dashboard, and then change out the front distribution box will be where most of the labor and effort is required in this mod

So im thinking of only doing the partial 4 zone climate control retrofit mainly to increase the air flow for the rear while keeping the original heated seats function but without additional footwell heating modules or anything.

According to this thread, they said: https://www.bimmerfest.com/threads/2...ir-con.828555/

Parts:

Front grille with 4 zone climate control 64229166891
Rear Center Console Cover 51169206781
Rear Blower 64119311853
Rear Center grill 64229172344
4-zone rear controller w/ seat heating, w/o ceramic knobs - 61319290751
4-zone center console, storage compartment (qty 1) - 51169206729

On the electrical part

1) Connectors and cable from rear center control unit to the rear center grille vent.
2) Connectors and cable from the rear blower to the rear center control unit.
3) Power for the rear center control unit to be taken from the front fuse box (behind the glove box).
4) Power for the rear blower to be taken from the rear fuse box (at the trunk).
5) Power for the lighting on the rear center grille vent to be taken from the LED lighting for the center storage box.
6) Connection to CAN bus.
7) For heated rear seats, run LIN bus wires from the two rear seat heater controllers to the JBE.


Is there anything else I'm missing to accomplish just control air flow from the center console blower to increase the airflow based on what the front driver setting is?

[M_Bimmer]

Originally Posted by SocomCA

So im thinking of only doing the partial 4 zone climate control retrofit mainly to increase the air flow for the rear while keeping the original heated seats function but without additional footwell heating modules or anything.

According to this thread, they said: https://www.bimmerfest.com/threads/2...ir-con.828555/

Parts:

Front grille with 4 zone climate control 64229166891
Rear Center Console Cover 51169206781
Rear Blower 64119311853
Rear Center grill 64229172344
4-zone rear controller w/ seat heating, w/o ceramic knobs - 61319290751
4-zone center console, storage compartment (qty 1) - 51169206729

On the electrical part

1) Connectors and cable from rear center control unit to the rear center grille vent.
2) Connectors and cable from the rear blower to the rear center control unit.
3) Power for the rear center control unit to be taken from the front fuse box (behind the glove box).
4) Power for the rear blower to be taken from the rear fuse box (at the trunk).
5) Power for the lighting on the rear center grille vent to be taken from the LED lighting for the center storage box.
6) Connection to CAN bus.
7) For heated rear seats, run LIN bus wires from the two rear seat heater controllers to the JBE.


Is there anything else I'm missing to accomplish just control air flow from the center console blower to increase the airflow based on what the front driver setting is?

I'm not aware of any successful "partial" install of a 4-zone climate controlled system in the F10.

If you are asking me how to get the rear climate controller to "just" control the center console fan speed, I have no idea. The system is complex and with my Engineering background, I couldn't convince myself that a predictable functionality could be achieved with only a partial installation.

1. The HKA is a slave to the IHKA
2. The HKA would have no sensors connected to it in your install (no control loops)
3. The HKA rear blower may spin, and create a vacuum if the IHKA has closed the rear stratification (depending on the IHKA settings, the HKA may fight the IHKA on air flow)
4. The IHKA "Sync" will do nothing with the HKA controller (I find this feature is absolutely required for me)
5. Setting temperature on the HKA will do nothing
6. The HKA heat and A/C temp setting will do nothing
7. FDL coding from 2.5 zone to 4 zone will only set codes and cause your HKA and IHKA to function incorrectly if the other electrical/sensors aren't installed - this would bug the shit out of me (my ISTA module tree MUST be 100% green)
8. Even if you only install the front center vent, the one with two thumb wheels for temperature, and difference settings for air distribution on the air distribution thumbwheels, when changing your coding from 2.5 to 4 zone, your IHKA will throw several faults...those thumb wheel differences will contradict the stratification mismatch (LIN bus error)

The only partial portion of the 4-zone that I could ever recommend that would not necessarily impact the full functionality of a 4-zone Mod, would be to not install the rear air ducts from the center console over to the B-pillar vents, which given only additional air distribution and only left or only right air flow under very select situations...and it won't be missed. Other than that, I only pursue full factory-like install of electrical modifications. (Please do not get me started on aftermarket radio installations - Ugh)

If you proceed, and are successful with a partial install of the 4-zone, please post. Others most certainly would LOVE to hear about your accomplishment. The "others" that post on partial install, oddly, don't post anything afterwards on what does or doesn't work.

[Unspec]

For those who already have automatic climate control, you don't need to get the front side vents replaced (64229166889/64229166890 in post #4)****. Also, in my search for parts, salvage yards almost always sell the distribution housing upper and lower as a single unit, which will include all the motors and temp sensors you need for the front distribution housing. Look for parts ideally from a RR, since 4 zone climate is standard on those cars and you don't need to worry about salvage yards misidentifying the parts.

The hardest part on this retrofit isn't really the wiring itself, newTIS wiring diagrams are genuinely easy to follow, but rather sourcing the right plugs and pins. I am planning on tackling this retrofit soon and managed to find a guy in Poland who was selling a wiring kit for 4 zone climate retrofit specifically, and will post pictures of the various plugs and pins once I get the harness.

Edit:

****: Turns out, realoem lies. I removed my front side grilles and they have no accommodations for wiring. Looks like you will need to buy part # 64229166889/64229166890 after all

Edit 2: But on newtis, it appears that the front side vents having any wiring is a 7 series specific thing?? Honestly I dunno at this point. Maybe M_Bimmer can shed some light.

Edit 3: Digging more on newtis, it appears that the wiring on the 4 zone climate specific side vents is just so the knob can...light up? That seems hilariously useless.

[Unspec]

M_Bimmer did you use part # 64229227657? Didn't see you mention it

[M_Bimmer]

Originally Posted by Unspec

M_Bimmer did you use part # 64229227657? Didn't see you mention it

I did. It was included with the center arm rest assembly I sourced on eBay.

It's been a while since I did this conversion, that I do not remember all the exact differences between the non-4-zone center console, and the 4-zone center console...and then the pre-LCI vs LCI differences.

Honestly, I know many have posted that this is not a worthwhile mod.....but it was. Often the rear passengers require a different temperature than those in the front, so they appreciate that they can control the airflow and temperature to suite them.

[Unspec]

Originally Posted by M_Bimmer

I did. It was included with the center arm rest assembly I sourced on eBay.

It's been a while since I did this conversion, that I do not remember all the exact differences between the non-4-zone center console, and the 4-zone center console...and then the pre-LCI vs LCI differences.

Honestly, I know many have posted that this is not a worthwhile mod.....but it was. Often the rear passengers require a different temperature than those in the front, so they appreciate that they can control the airflow and temperature to suite them.

I actually verified that the stock center console vent works with the motor. My guess is that the aforementioned part number is to accommodate the B pillar ducting. I am foregoing the B pillars, so won't need it.

[M_Bimmer]

Originally Posted by Unspec

I actually verified that the stock center console vent works with the motor. My guess is that the aforementioned part number is to accommodate the B pillar ducting. I am foregoing the B pillars, so won't need it.

That sounds spot on....and the extra $'s to pipe air over to the B-pillars are NOT worth it.

Not installing the B-pillar vents is the only 4-zone feature that will NOT throw a BMW code once VO code SA4NB is enabled.

I initially thought I had an air blockage in the F10, but my F02 & G12 B-pillar air has weak air flow too (non-detectable air flow). Even with the rear fan on 100% (lots of noise, but literally zero CFM), all the air tends to exit the rear center console vents (least air resistance).

(Note: The rear floorboard vent stratification is controlled by the front air distribution box, where as the b-pillar air flow are predominately influenced by the center console rear fan. So you can get really good floor board and rear center vent air flow depending on stratification configuration....but the b-pillar air vents are sort of worthless, even if you close the rear center vents)

[Unspec]

Originally Posted by M_Bimmer

That sounds spot on....and the extra $'s to pipe air over to the B-pillars are NOT worth it.

Not installing the B-pillar vents is the only 4-zone feature that will NOT throw a BMW code once VO code SA4NB is enabled.

I initially thought I had an air blockage in the F10, but my F02 & G12 B-pillar air has weak air flow too (non-detectable air flow). Even with the rear fan on 100% (lots of noise, but literally zero CFM), all the air tends to exit the rear center console vents (least air resistance).

(Note: The rear floorboard vent stratification is controlled by the front air distribution box, where as the b-pillar air flow are predominately influenced by the center console rear fan. So you can get really good floor board and rear center vent air flow depending on stratification configuration....but the b-pillar air vents are sort of worthless, even if you close the rear center vents)

Yea, my guess is the 3-4 90 degree turns from the rear vent really slow down air velocity and increase resistance for the B pillars, and thus air just tends to go out the center.

[M_Bimmer]

Originally Posted by Unspec

Yea, my guess is the 3-4 90 degree turns from the rear vent really slow down air velocity and increase resistance for the B pillars, and thus air just tends to go out the center.

...and the rear floor carpet mod to remove foam from the underside of the carpet, so that carpet sits flush over the air vent tubing, was a PITA.

I guess I could have purchased a used rear carpet, for 4-zone, from eBay, but inheriting someone's rear floor mess was not appealing.

Rear sunshade, 4-zone and rear heated seats were mods well worth it.....was debating on adding rear seat ventilation from an F02......

[Unspec]

Originally Posted by M_Bimmer

...and the rear floor carpet mod to remove foam from the underside of the carpet, so that carpet sits flush over the air vent tubing, was a PITA.

I guess I could have purchased a used rear carpet, for 4-zone, from eBay, but inheriting someone's rear floor mess was not appealing.

Rear sunshade, 4-zone and rear heated seats were mods well worth it.....was debating on adding rear seat ventilation from an F02......

For rear vent, I feel like there's a steep diminishing return, especially when paired with 4 zone climate.

Edit: The rear climate control panel with the button for ventilation is also god awful expensive for some reason:

https://www.ebay.com/itm/387164435440

Almost $600!

[BMW_Alpina]

Below is the wiring schematic for the HKA (A39) module in the F10/F11 and the F01/F02 4-zone climate control.

Very simple.

1. Can BUS wires link the HKA with IHKA (Front Climate Controller)
2. 12VDC power from the rear fuse box
3. Single PWM wire to the rear blower
4. Several wires over to each floorboard rear heater/stratification/temp sensor
5. 2 wires for the orange button/display
6. 2 wires for ambient lighting (B58 only)

Note: If you are replacing the rear panel than has only heated seat buttons, with an A39 module, once coded for 4-zone, A39 will drive the rear seat heating modules

[Unspec]

Originally Posted by BMW_Alpina

Below is the wiring schematic for the HKA (A39) module in the F10/F11 and the F01/F02 4-zone climate control.

Very simple.

1. Can BUS wires link the HKA with IHKA (Front Climate Controller)
2. 12VDC power from the rear fuse box
3. Single PWM wire to the rear blower
4. Several wires over to each floorboard rear heater/stratification/temp sensor
5. 2 wires for the orange button/display
6. 2 wires for ambient lighting (B58 only)

Note: If you are replacing the rear panel than has only heated seat buttons, with an A39 module, once coded for 4-zone, A39 will drive the rear seat heating modules

Yea the hardest part is probably sourcing all the connectors. It's why when buying used parts, I prefer buying parts where the scrap yard was lazy and just chopped the wiring instead of unplugging. You're left with a nice pig tail.

[Unspec]

Originally Posted by Napas

Sorry need todo a question

Its extremely hard to find Interior Heaters 2hand- Distribution housing, a/c unit, lower 64119241199


Searching for F10/F11 with 4 Zones, I have been finding that a lot have 11 actuators instead of 13.

With 13 i could only find one of endless weeks searching. - They are not expensive 50-100€, the transport is expensive +100€

This two are controlled by the top actuators. - 11 Actuators





M23 M22


But i can also find in TIS that F01 + F02 + F07 had M22 + M23 = 13 Actuators.

Confuse there are 2 versions of 4 Climate Zones?



The other point is
For F10/F11 LCI the Distribution housing, a/c unit, lower that supports the actuators is the following
Autom. climate control with 4-zone ctrl S4NBA=Yes
Distribution housing, a/c with preheater 1 03/2013 64119241199



The only Cars compatible are F06 Grand Coupe



If I try to buy a brand new Distribution housing with 4 Zones, it comes with support for 11 Actuators not 13.

But

If we look at the actuators needed


Maybe we can assemble 13 instead of 11 and all i need todo is adapt the wiring.

https://www.newtis.info/tisv2/a/en/f...ion/1VnbhzL6Ge

Yea for some reason, the second hand listings for the 4 zone lower, based on the realoem part number, is almost always only for the 2 or 2.5 zone climate. Look for part number 64119241196 instead - this is what is used on the F07, F02/F02, and RR cars. I got mine off a wrecked RR Dawn lol

I am unsure why there's a part number difference between the F10 4 zone lower and 4 zone lower used for the other listed models - even though the F07 is also just a 5 series. Maybe two different factories for the same part, and so they just gave one part number to half the applicable vehicles, and another part number to the rest? Dunno.