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Volkswagen Golf Mk7 Service & Repair Manual: Dealing with problems with Midtronics -MCR340V- battery tester

This page lists the most common error messages the Midtronics MCR340V tester can display, with suggested solutions for each on a Volkswagen Golf Mk7.

Under certain circumstances, the display may show errors or messages according to status.
The most frequent display messages are listed below, together with suggested solutions.
  Note
For messages not listed here, please refer to → operating manual MCR340V.
   
Display message Measures
No display
–  Check whether terminals of battery tester are firmly connected to battery terminals.
–  Check battery terminals are tightened according to regulations and do not have corrosion.
–  Charge battery → Chapter.
System noise
–  Switch off all electrical consumers.
–  Wait until all electrical loads monitored by onboard supply control unit have switched off.
–  Remove ignition key.
–  Disconnect any suspect non-standard electrical equipment from the onboard supply.
 
Wait a few minutes and test again → Chapter.
  Note
If you have performed the test at jump-start point and the message does not disappear, perform the test directly on the battery.
   

    Questions & answers

    Dealing with problems with Midtronics -MCR340V- battery tester — Volkswagen Golf Mk7

    What if the Midtronics -MCR340V- gives an error on the Golf Mk7 battery?
    Clean the terminals, re-check the clamp connection, verify the CCA setting matches the battery label. Retry. If errors persist, use -VAS 6161-.
    Performing battery test with Midtronics -MCR340V- battery tester
    Prerequisites:   WARNING Before working on the battery, read through the warning and safety regulatio ...

    Current draw test
      WARNING It is not permissible to test or charge batteries whose magic eye shows light yellow. Do not slave/jump st ...