Can anyone help as I'm about ready to throw the laptop through the windscreen! I've got a lead, I've got a working copy of inpa (tried the one that came with the lead and now have the one from here) and can connect to the car with no problems. What I can't do is run a LWS calibration. Everywhere I look on the internet says "press shift and F4" to bring up the option to calibrate it and both copies of inpa don't have this. The one that came with the lead did have the old menu "special tests" and did list calibrate the LWS in there but that wouldn't connect and work. My sensor is good and working, all I want to do is run the calibration to turn off the DSC light and orange brake warning light (I've fitted a second hand ABS unit to fix the trifecta of lights). Anyone have any ideas?