Simon_CSK Posted May 8, 2015 Share Posted May 8, 2015 My 2001 P38's Speedo has stopped working and the rev counter has become intermittent. The central locking locks fine but the unlocking is intermittent. The faults occured after the positive on my radio popped out and grounded. After replacing the fuse these fault remain so would appreciate some guidance. I have asked on the RR forum but no results so I thought I would throw it out to the wide audience Quote Link to comment Share on other sites More sharing options...
HoSS Posted May 8, 2015 Share Posted May 8, 2015 Does the radio work after replacing the fuse? What fuse was there? If it was too big some wiring could have been damaged before it blew. Unless theres a known solution that someone knows, i think you will have to open up and inspect. Trace the voltage to the speedo etc. Quote Link to comment Share on other sites More sharing options...
L19MUD Posted May 8, 2015 Share Posted May 8, 2015 Sounds like a possible BCM problem to me. Have you checked for any fault codes in the BCM? Quote Link to comment Share on other sites More sharing options...
pete3000 Posted May 8, 2015 Share Posted May 8, 2015 Not sure if the P38 was technically advanced enough (only 9 computers LOL) but the iso loom for the radio on newish cars has a speed sense input pin. Technically the faster you go the louder the radio gets, and vice versa. Can you remove the radio and try the speedo? as Hoss says is the radio working? Quote Link to comment Share on other sites More sharing options...
Simon_CSK Posted May 8, 2015 Author Share Posted May 8, 2015 Can confirm that the Radio is working and the fuse was correctly rated. I cannot fathom why the Rev and the remote should be intermittent. Quote Link to comment Share on other sites More sharing options...
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