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Program switch (CAN and/or Rotary)
Posted: 04 Jun 2026, 20:15
by HPTuningCR
Hi!
I was wondering if I can have both a CAN switch and the Rotary Switch for Program Switching in the Turbolamik. Is it possible to have both at the same time or is it one or the other?
(I would like to keep the Rotary for simplicity but would like to also have the ability to maybe switch from a CAN dashboard or from the ECU when I switch to an specific map)
Thanks!!!
Re: Program switch (CAN and/or Rotary)
Posted: 05 Jun 2026, 01:21
by M4comp
The input is assigned in the TCU, only one or the other.
0-OFF
1 to12- Analog 1 to 12
13- Can selector, OEM selector
14- TCU Standard 7
15- Program Switch Button
16- Audi 8hp55 PCB Audi
10= default
Re: Program switch (CAN and/or Rotary)
Posted: 06 Jun 2026, 00:05
by HPTuningCR
Thank you for your reply!
The reason I thought it could work is because when using a BMW shifter for example, Program is changed by the shifter through CAN while the Rotary Switch is not moved.
So, I saw these settings below for Custom CAN Rx:
Custom CAN Rx.png
And I was wondering if I, let's say, send 3 via CAN on ID 1606 if the Program gets then shifted to P3 without moving the Rotary Switch.
Do you think that's possible?
Re: Program switch (CAN and/or Rotary)
Posted: 06 Jun 2026, 15:35
by M4comp
The bmw shifter does have the normal and sport/manual mode positions but I think it works differently then your thinking.
If the program switch is in P3 let's say and the shifter is in normal drive mode - it will be in P1. If you move the shifter to sport/manual mode it then goes to P3.
Changing the Mode switch while in normal drive mode does nothing ( it will show P3 in Park or Neutral but goes to P1 when in gear ).
You can send the P mode switch via CAN bus, we do this via the ECU and use it as performance mode based on engine load. But the shifter would need to be placed in Sport/Manual.
Also you would need to set the input in the TCU to CAN which will disable the analog input of the physical dial connected.
Re: Program switch (CAN and/or Rotary)
Posted: 08 Jun 2026, 20:28
by HPTuningCR
Thank you! That clarifies my doubt. This TCU is so good it makes you start thinking of so many different ways to customize it to an specific application.