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      08-22-2018, 09:19 PM   #1
Nickco43
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Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

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2008 BMW  [0.00]
DIY: Heated Steering Wheel Retrofit

Heated Steering Wheel Retrofit


Parts Needed:
  1. Heated steering wheel
  2. Heated steering wheel clock spring
  3. Heated steering wheel lower steering column trim with button
  4. 12 pin connector for clock spring 61136954518
  5. 18 gauge wire
  6. 20 Gauge wire
  7. 3 pin connector for button 61136931929

DIY:

Disconnect the battery and wait 10-15 minutes

Take a T-20 screw driver and release the two clips holding the airbag in

Disconnect and remove the airbag

Remove the 16mm bolt holding in the steering wheel

Disconnect all the the connectors and remove the steering wheel





Take a plastic trim tool and remove the steering colum trim

Remove the 4 T-30 screws and remove the clock spring





Install the new clock spring





You will need to make a wiring harness for the heated steering wheel. Take the 12 pin connector and transfer the 6 wire to the top 6 pins in the 12 pin connector (1-6). Then you will add the heated steering wheel power and switch wire to the bottom pins (7-12).













You can tap power anywhere that is fused for at least 10 amps. The heated steering wheel uses 6 amps with a 10 amp fuse from the factory. I deleted my ash tray so I taped into the unused socket connection. Both cigarette outlets share a 20 amp fuse. Alternatively you can use a fuse tap for power. Make sure you use 18 gauge wire!

Once your wiring is done plug both harnesses back into the clock spring

Plug in the heated steering wheel button and install the steering column trim

Install the heated steering wheel making sure all of the connections are tucked away from the airbag. Torque to 46 ft lb.





Install the airbag.

Connect the battery again and start the car.

If your replacement clock spring was spun at all you will need to calibrate the steering angle sensor. I used ISTA for this. If you are getting DSC errors then you will need to flash a blank man file to the DSC.

After any coding you may need you are all done





The light will be on when the heated steering wheel is on. It will automatically shut off when you turn the car off. The wheel does not getting burning hot but it does get noticeably warm even when it is 90F outside. I did this retrofit for $80 using my magic eBay powers. I would not spend more than $150-$300 on this depending on what steering wheel you have.
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