W204 battery charge voltage reading in speedo cluster ?

Discussion in 'Electronics' started by vijilants, Sep 4, 2017.

  1. vijilants

    vijilants Hardcore MB Enthusiast

    Messages:
    2,215
    Joined:
    Jan 23, 2007
    Location:
    London
    Car:
    C320CDI Sport W204
    Yesterday I called out Mobilo because I had a flat battery on my W204.

    The engineer that came out jump started it and then was monitoring the voltage values via an engineering menu in the car, but it was being displayed in the centre circle of the speedo.

    Does anyone know how to access this in order to display these values ?

    Thanks
     
  2. Gallon

    Gallon Member

    Messages:
    32
    Joined:
    Mar 14, 2010
    Location:
    UK Essex.
    Car:
    2012 W204 C180 Sport Plus Estate.
    Not sure if this works on all w204 but this method works for facelift models with 12 button steering wheel option.
    Key to pos 1.
    Scroll main display to odometer screen with outside temp.
    On steering wheel press & hold the phone answer & OK buttons for 3 sec.
    New menu appears with 3 options top one is Vehicle data.
    Ok this option. It will then display Voltage & Amps.
     
    1 person likes this.
  3. OP
    OP
    vijilants

    vijilants Hardcore MB Enthusiast

    Messages:
    2,215
    Joined:
    Jan 23, 2007
    Location:
    London
    Car:
    C320CDI Sport W204

    Thanks...will give it a go....and how do I put the display back to normal ?
     
  4. MancMike

    MancMike Hardcore MB Enthusiast

    Messages:
    4,101
    Joined:
    Jul 29, 2014
    Location:
    Manchester
    Car:
    W204 C280 Elegance
    Take key out, put back in.
     
  5. bazzabear

    bazzabear Hardcore MB Enthusiast

    Messages:
    160
    Joined:
    Jul 7, 2017
    Car:
    2013 C63 estate
    Interesting. What are the other possible readouts?
     
  6. OneForTheRoad

    OneForTheRoad Hardcore MB Enthusiast

    Messages:
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    Joined:
    Apr 20, 2015
    Location:
    uk.
    Car:
    cls 2008 3.0 v6 cdi 7g tronic.
    alot of this on youtube.
     

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