DIY: MK5 steering wheel on MK4

[witchcraftz]

Disclaimer: Any modifications are at your own risk. I am not liable for any damage or harm that may occur from following this DIY.

Tools Required:
wrench 10
Small screwdriver
12 point (also called triple square) socket M12
Socket wrench
Soldering iron

Side by side comparison


1. Unhook the car battery.


2. Turn the steering wheel 90 degrees to the side. On the back there is a slot.
Insert the small screwdriver and then press down to release that side of the airbag. Turn 90 degrees and release the other side.




3. Unplug the Steering wheel loom harness connector.


4. Unscrew the steering wheel bolt. and remove the MK4 steering wheel.


5. Pull up on the yellow part of the MK5 airbag plug. Then you can pull the airbag plug out.


6. Pry up with the screwdriver on the MK4 airbag plug.


7. Cut the 4 wires from the MK4 steering wheel loom connector, leave about 5cm of wire on the connector.

8. Cut 4 wires from the MK5 steering wheel loom connector, also leave about 5cm of wire on the connector.

9. Making the custom Loom:



The MK4 connector has 5 slots for wires, I have named them A,B,C,D,E from the left. There are only 4 wires in the connector, The wire that sits at the most outside edge is A. E is an empty slot without a wire.

The MK5 airbag plug has numbers 1 and 2 written on it.

Solder A to the wire coming out of the MK5 plug 2
Solder B to the wire coming out of the MK5 plug 1

The MK5 airbag has 2 black wires, one has 2 spots it is connected to the airbag, one has 1 spot.


Solder C to the wire with 2 connections.
Solder D to the wire with 1 connection.

Use heat shrink tubing to seal your connections.

10. Plug in the MK5 airbag plug into the MK5 airbag.

11. Put the MK5 steering wheel on the MK4 steering spline (due to the clockspring the car on, it will only fit one way) and screw the bolt tight. The MK4 steering wheel bolt has blue locktite on it from the factory, you can apply some also.

12. Connect the custom steering wheel loom you just made.

13. Push the airbag into place, it will just click and lock itself.

14. Reconnect the battery.

15. Start the car from the passenger's seat, just in case the airbag goes off.


16. Enjoy the new look and feel of your MK4.

[bonfire]

Re: DIY: MK5 steering wheel on MK4

While a mod I will not likely do, this DIY is unbelievable. Well done.

[kujiwara]

Re: DIY: MK5 steering wheel on MK4

Very nice write up, just a tip for people looking for new air bags, most US spec MK5 bags are dual stage which wouldn't work on mk4s. The easiest solution is to order a Chinese MK5/Jetta bag off ebay HK because the Chinese built FAW vw jetta mk5s run single stage bags.

[Natty54]

Re: DIY: MK5 steering wheel on MK4

I wonder if this could be swapped in:



considering buying it

[MechEngg]

Re: DIY: MK5 steering wheel on MK4

There is definitely a guy that has done a lambo steering wheel in a mk4, multifuntion as well.

[witchcraftz]

Re: DIY: MK5 steering wheel on MK4

The design looks identical to the Audi RS4 steering wheel. So i'm sure it would fit.

I found information on retrofitting the controls to be very difficult to get. No one who has done it is willing to share their insights. Of course in my case I don't have multifunction to begin with, so I'd first have to retrofit the MF for MK4, then figure a way to make the MK5 CANBUS work on the MK4 MF system.

[snipa_mini85]

Re: DIY: MK5 steering wheel on MK4

15. Start the car from the passenger's seat, just in case the airbag goes off.

Awesome write up! Quoted just because I laughed at this step. It is important to remember though.