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Low tyre pressure indicator

Discussion in 'General Mercedes-Benz Related Discussion' started by jp, Nov 21, 2012.

  1. jp

    jp Senior Member

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    Joined:
    Jan 15, 2003
    Location:
    Wimbledon
    Your Mercedes:
    2007 E280 sport estate. Aprilia RSV1000 Tuono, CCM 404, Mk1 le mans
    It lies!
    Bought new tyres this morning but they only had 1 front tyre in stock.
    As they all the tyres off I said it was ok to put one old tyre back on and I would get the 4th tomorrow.
    So my dash goes red warning low pressure.
    All the tyres are nice and hard so no low pressure.
    So I assume the sensor must work off levels - the old tyre is possibly below 2mm.
    just thought it was interestiing...
     
    jp, Nov 21, 2012
    jp, Nov 21, 2012
    #1
  2. turbopete

    turbopete Senior Member

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    Joined:
    Feb 4, 2009
    Location:
    Spennymoor
    Your Mercedes:
    2010 '60' Ford Mondeo 2.0TDCi Zetec (sorry)
    i believe they work via the speed sensors for the ABS etc. the old tyre will be turning faster than the new ones (asits worn smaller) so the system thinks you have a soft tyre.
     
    turbopete, Nov 21, 2012
    turbopete, Nov 21, 2012
    #2
  3. JonnyCJ

    JonnyCJ Senior Member

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    Joined:
    Apr 13, 2010
    Location:
    Wirral
    Your Mercedes:
    ML350 Grand Edition 2011, ML350 Sport 2010, VW Splitscreen 1965
    Reset it and it should compensate for the old tyre
     
    Last edited: Nov 21, 2012
    JonnyCJ, Nov 21, 2012
    JonnyCJ, Nov 21, 2012
    #3
  4. OP
    jp

    jp Senior Member

    Messages:
    160
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    Joined:
    Jan 15, 2003
    Location:
    Wimbledon
    Your Mercedes:
    2007 E280 sport estate. Aprilia RSV1000 Tuono, CCM 404, Mk1 le mans
    Got the fourth tyre and reset it.
    Interesting point about resetting and compensating for the odd tyre, sadly too late to try.
    I thought it was because the car was unbalanced...
     
    jp, Nov 22, 2012
    jp, Nov 22, 2012
    #4

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