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Old 08-17-2023, 03:13 PM   #2
RedReplicant
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Left/right indicator come into the cluster as voltage, rather than over CAN. I am not sure if the cluster re-broadcasts the turn signal status. If you have the cluster by itself it broadcasts a handful of messages, but I didn't track down what they actually represented.

CEL can be controlled with 0x361. 20hz. Second byte - 0x00, 0x20, 0x40, 0x80

I don't know what the car actually sends during normal running, I just know the above will give you cel off, cel on, cel slow flash, cel fast flash.

TC / Slip / ABS lights are controlled by 0x0D3. Bytes 1, 2, 4. There are a bunch of combinations here, I worked out how to turn on each combination but I don't know what the car actually sends in all situations. The last byte is a rolling counter.

SRS / Airbag Light is controlled by 0x372. 0x00, 0x00, 0x00, 0x00, 0x20, 0x28, 0xFB, 0x3F will turn it off on cars without the SRS module.

There is a set of messages that will basically reset TPMS to defeat that light too, but I'm not going to post it. Pedal dance and ABS off work similarly. Both can be sniffed while using a Techstream.

Last edited by RedReplicant; 08-17-2023 at 03:31 PM.
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