I'm having similar issues with receiving data. I used 01090101F4 to automatically change the baud to 500 to match the car's CAN but I am still not seeing any feedback from the car. After using 01090101F4 to set the baud to 500 I'm supposed to use 03010100000000 to turn on monitoring on CAN1 with no filter, correct? Or how else do I turn on the CAN monitoring? Everytime I put in that hex number in I get the ÿ that others have seen. ....And now the battery on my car is dead....DOH!