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Alarm problem

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by Smacsor, Oct 25, 2012.

  1. Smacsor

    Smacsor Senior Member

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    Your Mercedes:
    2013 C250 CDI AMG Sport Plus; 2011 C220 CDI Blueefficiency 125 Edition - SOLD; R230 SL500 - SOLD
    I don't generally use the SL in the week, just weekends.

    I went to use it tonight and I had a message on the dash saying "convenience functions temporarily unavailable". I understand from searching the forum that this is due to a low aux battery as the car isn't used for periods of 4 or 5 days and that this is quite common?

    However I am also getting a problem that when I lock the car with the remote button on the key, the hazards flash continuously. I think this is the alarm but the sounder has never worked. I have to unlock it and lock it a few times to get the lights to stop flashing.

    Is this associated with the low battery, or is it an unrelated issue.

    Thanks,

    Simon
     
  2. OP
    Smacsor

    Smacsor Senior Member

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    2013 C250 CDI AMG Sport Plus; 2011 C220 CDI Blueefficiency 125 Edition - SOLD; R230 SL500 - SOLD
    Have just seen Andys320's post. Do I assume I need a new siren as well? What should I do if it gets to the stage where I can't stop the lights flashing?

    Thanks
     
  3. television

    television Always remembered RIP

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    I would have said yes, the siren has water in it
     
  4. OP
    Smacsor

    Smacsor Senior Member

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    2013 C250 CDI AMG Sport Plus; 2011 C220 CDI Blueefficiency 125 Edition - SOLD; R230 SL500 - SOLD
    Thanks Malc. Is this expensive to have a new one fitted?
     
  5. television

    television Always remembered RIP

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    Its a DIY and about £80
     
  6. OP
    Smacsor

    Smacsor Senior Member

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    2013 C250 CDI AMG Sport Plus; 2011 C220 CDI Blueefficiency 125 Edition - SOLD; R230 SL500 - SOLD
    I'm afraid not much is DIY with arthritis in fingers!:mad:
     
  7. television

    television Always remembered RIP

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    Sorry to hear that, it does not take long to do,,,1 hour max
     
  8. johno2004

    johno2004 Senior Member

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    Had exactly same problem with my SLK last week and it was the siren cost £85 and all is well now. Takes about 30 mins to fit so Indie wont cost much.
     
  9. OP
    Smacsor

    Smacsor Senior Member

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    I've got a couple of other little electrical gremlins (clock so dim you can't read it and bezel around headlight switch doesn't illuminate) so I'll book it into the local Indy and get it all done at once.

    That will be all known problems sorted then (whispered quietly in case car hears and decides to rebel).
     
  10. television

    television Always remembered RIP

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    The lamp switch does not light up on the 230
     
  11. OP
    Smacsor

    Smacsor Senior Member

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    Just two problems left then :)
     
  12. television

    television Always remembered RIP

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    Nothing repairable in the cluster, have you tried the dimmer
     
  13. OP
    Smacsor

    Smacsor Senior Member

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    Yes, dimmer is turned up full. It's literally so dim that you can't see the digits in daylight. At night, it's a faint glow but just legible.
     
  14. television

    television Always remembered RIP

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    Mine are not that bright on my 216 I would have a word with www.actronics.co.uk and see what they say 01206 849920
     
  15. OP
    Smacsor

    Smacsor Senior Member

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    Thanks Malcolm. If its just the siren, I might have a go myself and if I get stuck with my dodgy fingers, I'll have to give my son a shout!

    Are there any instructions you can send me, or is so obvious, I can't go wrong (famous last words)?
     
  16. television

    television Always remembered RIP

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    2002 SL500, 216 CL500, all fully loaded
    It should be at the top rear section of the front wheel arch line, I will confirm later
     
  17. OP
    Smacsor

    Smacsor Senior Member

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    Your Mercedes:
    2013 C250 CDI AMG Sport Plus; 2011 C220 CDI Blueefficiency 125 Edition - SOLD; R230 SL500 - SOLD
    This morning I had lots of brake, nav and convenience warnings and the car would only just start. I guess I need to use it more often! Is this both batteries or just the aux that affects all this? Can I safely put either or both on a trickle charge on the car or do I need to remove batteries to do this? If I remove them will this affect codes etc?

    Sorry about all the questions but don't want to mess anything up!

    Simon
     

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