1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

speedometer not working

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by Petemac, Dec 11, 2012.

  1. Petemac

    Petemac Senior Member

    Messages:
    153
    Likes Received:
    0
    Joined:
    Jan 12, 2012
    Location:
    Inverness
    Your Mercedes:
    merc c250TD 99/2000 150000MILES ON CLOCK GREAT CAR
    speedometer is not working sometimes jest driving along and goes back to zero and been automatic cant change gear unless you stop remove key what could be causing this help please the abs light is not coming on so cannot be that
     
  2. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    309
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    You have lost a speed signal somewhere, without this speed signal the box does not know what to do re changing gear.

    We had a post on this a couple of months back and it was a wiring problem, worth doing a search on this.

    You have not just changed the radio have you
     
  3. OP
    Petemac

    Petemac Senior Member

    Messages:
    153
    Likes Received:
    0
    Joined:
    Jan 12, 2012
    Location:
    Inverness
    Your Mercedes:
    merc c250TD 99/2000 150000MILES ON CLOCK GREAT CAR
  4. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    309
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    Then it could be that :D

    Unplug the radio and try the car, just the main multi plug, if all OK then cut the wire on pin 1 and all will be fine, or it should be
     
  5. OP
    Petemac

    Petemac Senior Member

    Messages:
    153
    Likes Received:
    0
    Joined:
    Jan 12, 2012
    Location:
    Inverness
    Your Mercedes:
    merc c250TD 99/2000 150000MILES ON CLOCK GREAT CAR
    will try it now once i get the frost off car and get back to you be about 30mins.
     
  6. OP
    Petemac

    Petemac Senior Member

    Messages:
    153
    Likes Received:
    0
    Joined:
    Jan 12, 2012
    Location:
    Inverness
    Your Mercedes:
    merc c250TD 99/2000 150000MILES ON CLOCK GREAT CAR
    speedometer working no problem malcolm went 3mls . last night traveled 1ml speedo stopped 3 times cant thank you enough you have a vast experience behind you and thank you for sharing it with us all the best peter
     
  7. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    309
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    So pleased all OK very few know this fault, but they do now:D
     
    Last edited: Dec 11, 2012
  8. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

    Messages:
    6,825
    Likes Received:
    1,002
    Joined:
    Dec 8, 2009
    Location:
    Bristol/Somerset
    Your Mercedes:
    C220CDI AMG Line Premium, SLR McLaren Roadster, SL55 & C32AMG
    Whats this fault Malc? Never heard of it myself!!
     
  9. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    309
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    Its an interesting one and most indies do not know about this :D

    The speed signal is used to change the volume of the radio, and this only works with the original radios. If you change the radio, then cut the wire from pin 1, and problem solved
     
  10. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

    Messages:
    6,825
    Likes Received:
    1,002
    Joined:
    Dec 8, 2009
    Location:
    Bristol/Somerset
    Your Mercedes:
    C220CDI AMG Line Premium, SLR McLaren Roadster, SL55 & C32AMG
    Keeping this one in the memory bank for future use!!
     
  11. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    309
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    It is only valid on from the 124,202,210 and 140 up to around 2000
     
  12. Frontstep

    Frontstep Senior Member

    Messages:
    7,391
    Likes Received:
    1,275
    Joined:
    Apr 22, 2007
    Your Mercedes:
    T210 320cdi
    Well you learn something new every day as they say.
     
  13. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    309
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    That does not function any more after X amount of years have passed by:(
     
  14. Frontstep

    Frontstep Senior Member

    Messages:
    7,391
    Likes Received:
    1,275
    Joined:
    Apr 22, 2007
    Your Mercedes:
    T210 320cdi
    Well you can remind me Thursday.
     
  15. OP
    Petemac

    Petemac Senior Member

    Messages:
    153
    Likes Received:
    0
    Joined:
    Jan 12, 2012
    Location:
    Inverness
    Your Mercedes:
    merc c250TD 99/2000 150000MILES ON CLOCK GREAT CAR
    i thing we should vote malcolm in as next prime minister he would sort country out in a couple of weeks he gets my vote
     
  16. Frontstep

    Frontstep Senior Member

    Messages:
    7,391
    Likes Received:
    1,275
    Joined:
    Apr 22, 2007
    Your Mercedes:
    T210 320cdi
    No he's too busy on here.
     
  17. OP
    Petemac

    Petemac Senior Member

    Messages:
    153
    Likes Received:
    0
    Joined:
    Jan 12, 2012
    Location:
    Inverness
    Your Mercedes:
    merc c250TD 99/2000 150000MILES ON CLOCK GREAT CAR
    speedometer

    bad news malcolm speedo stopped 3times 2day on 10 ml trip radio completely disconnected since you told me to do it any more ideas it was fine until the last 2mls once things got warm
     
  18. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    309
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    I will dig deep and see if I can come up with something
     
  19. OP
    Petemac

    Petemac Senior Member

    Messages:
    153
    Likes Received:
    0
    Joined:
    Jan 12, 2012
    Location:
    Inverness
    Your Mercedes:
    merc c250TD 99/2000 150000MILES ON CLOCK GREAT CAR
    cheers malcolm snowing here now
     
  20. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    309
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    Was the speedo perfect right up to the time the radio was changed
     

Share This Page