Just a shout out for anyone with the same problem as myself. Common fault I know with the milometer not working but the speedo still operating. Sent unit to JDO instruments 34 spring avenue Keighley West Yorkshire Tel 01535 672125. First phone call to them and they told me the problem before I told them. Unit came back 48 hours later after sending, now back in the car working. I came across them on some forum reviews when researching the problem with my unit and have been very pleased with there service.