E320 CDI gearbox help please

Discussion in 'Engine' started by Striker99, Aug 11, 2017.

  1. Striker99

    Striker99 Member

    Messages:
    36
    Joined:
    May 23, 2014
    Car:
    E320 cdi
    I have a 2007 E320 CDI 3.0 estate.

    I'm getting a dash message 'ESP system inoperable' regularly and there is a clonk at the gearbox which then doesn't change properly. If I switch the ignition off and on a few times it eventually works ok again, but that could be for 2 minutes or 2 days !

    a friend plugged my car into diagnostics and came up with this message

    'ETC Electronic fault 13, No CAN message was recived from control unit transmission control module'.

    Does anyone have experience of what is likely to be causing this, and therefore the fix required please ? I'm hoping this isn't an expensive fix because things are tight at the moment, but I fear it could be.
     
  2. 4life211

    4life211 Hardcore MB Enthusiast

    Messages:
    289
    Joined:
    Jul 14, 2015
    Car:
    mercedes 211
    I have the same on my E270 2003.the same message as yours.This happens when have low voltage at terminal 87.My battery 's voltage reads 12.2 v.
     
  3. Tuercas viejas

    Tuercas viejas Hardcore MB Enthusiast

    Messages:
    478
    Joined:
    Mar 26, 2017
    Location:
    Denver
    Car:
    landrover/rolls royce/MB AMG S600/Prius
    Well is that voltage with engine/car in all OFF , or in KOEO?
    But!
    It then begs the question what is the voltage in KOER under alternator charge @ idle and revved at 1500/2000 r/m, (target figure 13.3 to 14.2v?)
    Tuercas viejas
     
  4. 4life211

    4life211 Hardcore MB Enthusiast

    Messages:
    289
    Joined:
    Jul 14, 2015
    Car:
    mercedes 211
    I said the battery .And that is measured when car is off.When car starts it reads 13.8 v.But ,when switch the key in pre start position the voltage in battery drops below 12 v.
     
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