E46 Can bus project.

[4004]

I've given up on interfacing new-er ACC with KCAN cars, but I forgot the original E38 didn't have KCAN - unlike the E46 peasants, E39/E38 got IBUS.
The (High) KOMBI/IKE seems to be the central IBUS gateway, and is also one of the key controllers of the ACC.

Would anyone know how feasible a KBUS->IBUS conversion is on an E46? Assuming KOMBI, GM, likely LCM need to be swapped? Is message structure the same on IBUS and KBUS?

[4004]

To answer part of my own question above, the message structure is indeed the same, and bus specs are the same.
The key issue is the different master/slave module allocation between KBUS and IBUS, so having an IBUS IKE (that is a master on its bus) and a KBUS LCM (which is a master on the KBUS) seems like it would not work

[kombinator]

Hi,

can someone send me a CAN log with an auto gearbox? I want to understand the message 0x43F.
I can already dispay the gear with Byte1

//Current Gear Display Information Byte1
//0 = Clear Screen
//1 = 1st Gear
//2 = 2nd Gear
//3 = 3rd Gear
//4 = 4th Gear
//5 = Auto / D
//6 = Neutral
//7 = Reverse
//9 = 5th Gear
//10 = 6th Gear

But I am missing the "S" or "M" and I don't know where it is hidden... My guess is from this page: https://www.ms4x.net/index.php?title..._ID_0x43F_EGS1
it must be in Byte2.
But yeah, i tried different values.. nothing worked..

[kombinator]

okay sorry, I have found it.
0x43F
Byte2 = 0x20 = "M"
Byte2 = 0x40 = "S"

[HeinrichG]

Hi guys,

I've buyed a E46 M3 instrument cluster and playing around with it. The cluster is from an UK M3, with mph / kmh speedo.

The oil temp, water temp, rpm gauges are okay and show appropriate values. But, the speedo shows nothing.

The Speedo-signal (BMW call them V1) definition is like this:

• length: 13 bits
• factor: 0.0625
• offset: 0
• byte order: intel
• value type: unsigned

And the layout of my ASC-message (0x153) looks like this:

0x153.jpg

Any ideas?

Many thanks!