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      02-04-2020, 12:39 PM   #1
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Heated Steering Wheel retrofit

Hello,
anyone knows if it is possible to retrofit the heated steering wheel?

In a F21 it was possible to code it to the car and retrofit the button to acitvate it, when you have the M-Steering Wheel with Diving Assistant (vibration on steering wheel).

Perhaps its the same on the G20.
And when possible to activate heated steering wheel with "Hey BMW", so you dont need to retrofit the button on the steering wheel to activate it.
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      02-04-2020, 12:42 PM   #2
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Quote:
Originally Posted by Hacker9 View Post
Hello,
anyone knows if it is possible to retrofit the heated steering wheel?

In a F21 it was possible to code it to the car and retrofit the button to acitvate it, when you have the M-Steering Wheel with Diving Assistant (vibration on steering wheel).

Perhaps its the same on the G20.
And when possible to activate heated steering wheel with "Hey BMW", so you dont need to retrofit the button on the steering wheel to activate it.
Retrofit should be possible once coding on the G20 becomes popular and people have fiddled around with it.

Also, “Hey BMW” does not work to heat the steering wheel. I’ve tried. It says that module cannot be controlled or something like that. Just like how the rear seat heaters cannot be turned on via “Hey BMW”.
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      02-04-2020, 12:48 PM   #3
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Perhaps only add steering wheel with VO coding and activate it when its cold outside via iDrive....
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      02-04-2020, 01:06 PM   #4
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Quote:
Originally Posted by Hacker9 View Post
Perhaps only add steering wheel with VO coding and activate it when its cold outside via iDrive....
It would be nice if you could do that. Unfortunately in a stock car, there’s no auto steering heat turning on below a set temperature. Only for the drivers seat.
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      02-04-2020, 01:20 PM   #5
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Quote:
Originally Posted by VipinLJ View Post
It would be nice if you could do that. Unfortunately in a stock car, there’s no auto steering heat turning on below a set temperature. Only for the drivers seat.
Should be no problem to code this.
Showing in this thread
https://g20.bimmerpost.com/forums/sh....php?t=1673049

Quote:
So far, I have successfully coded the following:

Remove legal disclaimers (HU_MGU cheat)
m startup animation (HU_MGU cheat)
ASS memory
ASD off
air con memory
video in motion (HU_MGU cheat)
close trunk from fob
close trunk from door switch
full SMS display
Coasting (HU_MGU cheat)
Flashing Brake Force Display (need to test)
Speed Correction
Auto activate heated steering wheel when cold
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      02-04-2020, 01:21 PM   #6
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Originally Posted by Hacker9 View Post
Should be no problem to code this.
Showing in this thread
https://g20.bimmerpost.com/forums/sh....php?t=1673049
Oh wow. I did not notice that. I unfortunately have no idea how to use esys. If only I could find someone who could remotely do it for me. That would’ve been nice.
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      11-12-2022, 04:56 AM   #7
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Has anyone managed to retrofit a heated steering wheel on the G2x platform?
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      11-20-2022, 03:47 PM   #8
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i will be doing this retrofit in a month, so will be able to tell some more info.
coding is the easy part, i will have to check which hardware has to be changed, i think all the wiring should be there from factory, only the clock spring differs, and ofcourse the steering wheel itself
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      11-20-2022, 05:02 PM   #9
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Same here, I have the steering wheel now and will be attempting it. The clockspring is the same for mine if I am not mistaken since I have drive assistant professional.
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      11-23-2022, 04:02 PM   #10
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So having done a bit of comparison of the CAFD without and with heated steering wheel (248) and it looks like its the following modules and parameters that are affected:

BDC_BODY3
• LIN_VARIANTE_LRE: lre_tlc (03) -> lre_tlc_lhz_taster (05)
• LRE_LHZ_VERBAUT: nicht_aktiv (00) -> aktiv (01)
• CODDT_BYTE_00_LRE_LIN: nicht_aktiv (00) -> LHZ_LRE_mit_TASTER (03)
• CTRL_HOD_CODG_STWH_LIN: nicht_verbaut (02) -> verbaut (01)

HU_MGU
• SVS_CONTROL_LENKRADHEIZUNG: nicht_aktiv (00) -> aktiv (01)

I wonder what the CTRL_HOD_COFG_STWH_LIN actually does. HOD is the Hands-On-Detection bit for the Driver Assistant Pro, unless it's a parameter for configuring the BDC for both HOD and STWH=Steering Wheel Heater?
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      05-06-2023, 05:20 AM   #11
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Quote:
Originally Posted by drdino View Post
So having done a bit of comparison of the CAFD without and with heated steering wheel (248) and it looks like its the following modules and parameters that are affected:

BDC_BODY3
• LIN_VARIANTE_LRE: lre_tlc (03) -> lre_tlc_lhz_taster (05)
• LRE_LHZ_VERBAUT: nicht_aktiv (00) -> aktiv (01)
• CODDT_BYTE_00_LRE_LIN: nicht_aktiv (00) -> LHZ_LRE_mit_TASTER (03)
• CTRL_HOD_CODG_STWH_LIN: nicht_verbaut (02) -> verbaut (01)

HU_MGU
• SVS_CONTROL_LENKRADHEIZUNG: nicht_aktiv (00) -> aktiv (01)

I wonder what the CTRL_HOD_COFG_STWH_LIN actually does. HOD is the Hands-On-Detection bit for the Driver Assistant Pro, unless it's a parameter for configuring the BDC for both HOD and STWH=Steering Wheel Heater?
Hey drdino Did you manage to get the heating activated? You are right about the STWH=Steering Wheel Heating-> it then says the value should be 02 for "Not built in" or 01 for "built-in".

I am just bought an m340d, and the previous owner specced almost everything on the car apart from the STH
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      05-06-2023, 06:13 AM   #12
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Yeap, retrofit complete and is working perfectly!
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      05-06-2023, 09:29 AM   #13
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Quote:
Originally Posted by drdino View Post
Yeap, retrofit complete and is working perfectly!
drdino Oh that is awesome! Would you be able to share how you did it? Would I need to just buy the button part on the steering wheel and then enable the SWH? (Also if you could give any info on how you did that it would be wonderful!)

Or does it require a brand new steering wheel? I have the M-Sports one currently with the drivers assistance package.

Living in Sweden you really do need steering wheel heating in the winter


Thanks a ton in advance!
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      05-08-2023, 04:08 AM   #14
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I'm afraid you need to buy a complete steering wheel. Once you have it, it's just a matter of swapping the parts and then coding.
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      05-08-2023, 11:17 AM   #15
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Quote:
Originally Posted by drdino View Post
I'm afraid you need to buy a complete steering wheel. Once you have it, it's just a matter of swapping the parts and then coding.
Okay I would be happy to get a new wheel and sell the old one to cover some of the cost. Replacement of parts should also be fine with a local mechanic.

Regarding the coding.. Is this tough to do? Like could I do it myself? Is there a guide anywhere for a coding newbie?
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      05-09-2023, 06:02 AM   #16
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I don't think it's tough, it's quite straightforward but there is an element of learning required.

There are two paths you can follow:
1. Code each parameter individually
2. Change the factory order (VO) of the vehicle

I used the 2nd option because this way nothing is overwritten if the vehicle gets a software update and confirmed each parameter to be on the safe side.

Protool on Android is an excellent tool that does both.
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      11-03-2023, 05:32 AM   #17
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Can anyone help me?

I've just fitted a genuine bmw heated steering wheel to my G22 M440d. I understand my car needs coding for it to operate.

Could I pay someone on here to do this for me? Or help me with a step-by-step guide?
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      11-03-2023, 12:49 PM   #18
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Quote:
Originally Posted by cinders View Post
Can anyone help me?

I've just fitted a genuine bmw heated steering wheel to my G22 M440d. I understand my car needs coding for it to operate.

Could I pay someone on here to do this for me? Or help me with a step-by-step guide?
PM me I can code it remotely if you have ENET cable and windows laptop.
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