Operation skills:
 

If resetting odometer needs to replace simulate chips and install filter, reset the simulate chips first, and then use BMW F/G chassis odometer wiring harness light up the odometer, to ensure odometer resetting is success, and then install filter. Use BMW F/G chassis odometer wiring harness light up odometer after the filter is installed, and then install odometer back to the car after confirm it shows normal. After the odometer which needs to replaced simulator chip or installed filter been reset and installed back to the car, this operation method can avoid problems such as odometer screen go blank or could not lighted up or shows red dot.