Audi A8 D3 - Reading speed data via CAN

Hello everyone,

'I've been trying for some time to read the speed from our A8 using the CAN bus.' Unfortunately, this hasn't been successful so far, and I hope you can help me.

I've already read through some posts, but unfortunately, the ID 351h doesn't appear.

Possible IDs could be:
1AC 284 288 2AC 320 362 372 38A 394 420 440 488 44A 480 4A0 4A8 51A 520 540 550 572 580 588 590 594 598 5A0 5C0 5D2 5E0 7D0

I have assigned the 280 and 380 values to the accelerator pedal, but I am unable to detect any speed information within them.

It would be great if you could help me.
You're welcome.

I'm experiencing the same problem with my Audi A4 8E.

If I'm not mistaken, message 0x4a0 contains the individual wheel speed values. You could calculate the speed from that.

Twen wrote:

I'm experiencing the same problem with my Audi A4 8E. If I'm not mistaken, message 0x4a0 contains the individual wheel speed values. You could calculate the speed from that.

If you have a V5.xx CAN matrix (I'm not familiar with the A:

Identifier: $4A0
"Each wheel uses 2 bytes: Bytes 2.1 = VL, ..." VR, HL, HR
always the same.
Bit 0 of the most significant bit (MSB) = direction of travel (forward = 0 / reverse = 1).
Bits 15..1 = Speed in 0.01 km/h (calculated by the ABS controller from wheel circumference data obtained from the combination instrument).
Range: 0-326.39 km/h, other values for reference.
-> Values are used, for example, by the ESP.

Identifier: $5A0
Byte 3.2
Bit 0 flag.
Bits 15..1 = average wheel speed of the driven wheels in revolutions per second (rps), with a resolution of 0.002 rps.
Value range: 0-65.278 U/s, other values for flags.
-> This is the value that the combination instrument uses for the speedometer display.