St Thicket

Steering Wheel Stalk Modification

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Hi

I've been looking at getting a replacement circuit board (PCB) for the steering wheel stalk, so that it would be possible to use aftermarket head units for the pre-facelift Corolla. I've currently been using a Pioneer HU for about a year now, and been missing using my steering wheel remote...

My plan is to design a new PCB that can be assembled to be able to use several head units. It will be a DIY kit, where the plug for the remote must be salvaged from the old PCB, so some tweaking must be done, but my plan is to keep it to the minimum.

Would anyone be interested in modifying the remote? I'll be designing the PCB, and the more people interested, the cheaper the PCBs would be. Let me know which head unit you have, and I'll see if I can get the design to suit it. I'm not doing this for my personal gain, and I'll try to keep the price around £20, but that depends on the number interested.

By the way, does anyone know any really cheap PCB manufacturers? :)

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I fear you wont get enough orders, PCB's only get cheap when you produce millions of them, you will struggle to get a small number made within budget, but good luck anyway

Kingo :thumbsup:

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I fear you wont get enough orders, PCB's only get cheap when you produce millions of them, you will struggle to get a small number made within budget, but good luck anyway

Kingo :thumbsup:

I know... but I've found a manufacturer that kan make them as cheap as 7 euro if i order 10 pc, or double price if i order only 5.

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I thought you can just buy an adaptor to plug in to the back of the units and connect to the steering wheel anyway :blink:

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I thought you can just buy an adaptor to plug in to the back of the units and connect to the steering wheel anyway :blink:

No, that's not the case for the pre-facelift. There are no adaptors as I know of, and I've been looking for two years now! I've also bought several ones that I thought might be usable, but every single one was for the facelift version.

The differences are explained here: Steering wheel control facts

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I thought you can just buy an adaptor to plug in to the back of the units and connect to the steering wheel anyway :blink:

No, that's not the case for the pre-facelift. There are no adaptors as I know of, and I've been looking for two years now! I've also bought several ones that I thought might be usable, but every single one was for the facelift version.

The differences are explained here: Steering wheel control facts

So what you are saying is all the ones I have considered buying when looking at different stereos would not have been compatible even though it is saying on their systems they are for a pre facelift :unsure:

Seems very odd to me that. You probably just had bad luck when you bought yours :lol:

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So what you are saying is all the ones I have considered buying when looking at different stereos would not have been compatible even though it is saying on their systems they are for a pre facelift :unsure:

Seems very odd to me that. You probably just had bad luck when you bought yours :lol:

Yes, that's what I'm saying. But please prove me wrong!

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Now, the PCBs have arrived. I did a quick fitment test, and they fit nicely...

th_IMAG0027.jpg

I ordered 8 PCBs, and got them quite cheaply since there is only one copper layer, no silk screen and no solder mask. I have also found switches that can be used, but unfortunately I haven't found a replacement socket for the plug. That means the plug on the old stalk must be taken off and placed on this new PCB.

I'll do the fitment this weekend, and I'll show you the results!

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yes you can get them for a PFL<

i had one off ebay for £17 for my pioneer,

plugged it in and that was it.

just shop about more. they are available.

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yes you can get them for a PFL<

i had one off ebay for £17 for my pioneer,

plugged it in and that was it.

just shop about more. they are available.

I'm still not convinced.

Did you have a stalk next to your steering wheel, or did you have buttons on the front of the steering wheel? Did the converter use 3 wires for the interface, or was it just 2?

If you could point me to the particular product or manufacturer, then I would appreciate it!

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Modified stalk has now been mounted and tested. Works perfectly!

Some pictures:

IMAG0030.jpg

PCB with components. Switches are taken from an old CD player.

IMAG0028.jpg

PCB assembled. Notice that the green PCB is the original board that I've just transferred. Also notice the socket for the plug that I've transferred from the old PCB.

IMAG0033.jpg

Unit fully assembled.

IMAG0035.jpg

Plugs straight into the OEM plug.

IMAG0037.jpg

Wire for my Pioneer. It connects the tip and ground pin to the stalk.

IMAG0038.jpg

Plug for the stalk is located.

IMAG0039.jpg

Wires attached

th_VIDEO0003.jpg

Works like a charm!

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:thumbsup:

it looks to me like you've converted it to resistor ladder switching. So it works like a facelift?

Yeah, kind of... facelift use three wires. Prefacelift use only two. Also, it's not a ladder, just fixed resistors for each button.

I've made it to work on pioneer only, but believe it is possible to adapt it for other manufacturers as well.

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Hello, Is this project still alive?

I would very much like to modify / convert my steering remote as St_Thicket has done.

Are there any PCB's left?

Modified stalk has now been mounted and tested. Works perfectly!

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I'm not very active on this forum anymore, so please PM me if anyone wants a PCB plus necessary components.

I still have at least 3 PCBs left.

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Hi there!! I have Toyota Yaris Verso VVT-I 2004 with the same situation I need to convert my old digital remote control to analogue. Do you have any PCB available to sell??

You have done a great job, congrats!!

DSC_0058%5b1%5d.JPG

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Yes, I do. :smile:

Please PM me, and we can discuss the details in private. 

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On 6/23/2014 at 11:58 AM, St Thicket said:

I'm not very active on this forum anymore, so please PM me if anyone wants a PCB plus necessary components.

I still have at least 3 PCBs left.

 

Hi St Thicket, I hope you are still there and can see this message. I have a pre-facelift Toyota Corolla 1.6 VVT-i from 2002 that lost its steering wheel controls due to a radio upgrade. I would require your PCB replacement approach to get them active again on my new system. Do you still have those PCB-s to offer so I can reactivate my steering wheel controls again?

By the way, your info was the most instructive of all that I have found online. Great job!

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Sorry, but I am sold out of boards, and I am unable to produce new ones due to a hard drive failure. I sold my car in 2012, so I don't have access to the board. I don't even own a Toyota anymore ☺️

I know there is a user here on the forum called tsavman that is currently trying to replicate my project. You should PM him.

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Wow...that is some work you have done to make this work 😄

Out of curiosity...is there a reason why you are not using the Metra ASWC-TOY-LEX or a similar interface?

http://www.metraonline.com/part/ASWC-TOY-LEX

 

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