Volkswagen Golf Quiz
Electrical system, general information

Performing battery test with Midtronics -MCR340V- battery tester

In this manual: Electrical system, general information
General body repairs, exterior — 230General body repairs, interior — 279General information, paint — 133Vechile- specific paint information — 27Heating, air conditioning — 156Auxiliary heater — 58Air conditioning system with refrigerant R134a — 1297- speed dual clutch gearbox 0CW — 544- cylinder injection engine(1.4 1 direct inction. turbocharger) — 182Fuel supply system - Petrol engines — 59Running gear, axles, steering — 221Brake system — 92Wheels and Tyres guide — 12Guide for using trailers — 11Wheels and Tyres Guide - General Information — 121Brake system (hybrid) — 73Electrical system — 326Communication — 65Electrical system, general information — 111
~2min read

Prerequisites:

WARNING Before working on the battery, read through the warning and safety regulations carefully, and comply with them → Chapter. It is not permissible to test or charge batteries whose magic eye shows light yellow. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/jump starting.

These batteries must be renewed.
  • Read general description → Chapter.
  • Perform visual check → Chapter.
  • Open bonnet or cover for other installation location of battery.
  • Determine whether battery type is “Standard” or “AGM”.
  • Remove covers from battery positive and negative terminals.
  • Use wing covers or other kinds of cover before you use equipment in engine compartment or interior.
  • Close all doors.
Note

Battery temperature must be at least 10 °C.

For additional information, refer to the → operating manual INC 940.

Perform test:

WARNING It is not permissible to test or charge batteries whose magic eye shows light yellow. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/jump starting.

These batteries must be renewed.
  • Switch off ignition and all electrical consumers.
  • Check magic eye on batteries with magic eye → Chapter.
  • Switch tester on.
  • Connect red terminal “+” of tester to positive terminal.
  • Connect black terminal “-” of tester to negative terminal.
Note

Ensure test clamps have a good contact!

  • Select “In vehicle” or “Outside vehicle”.
  • Select “Warranty test”.
Note Use the print function of the Midtronics -MCR340- tester if the test results are required for handling warranty applications.
  • Select battery type “Standard ” or “AGM”.
  • Make a note of the DIN value of the battery as shown on the battery sticker. If there is no DIN value on the sticker, make a note of the SAE value.
  • Enter DIN value in tester and perform battery test → operating manual MCR340V.
  • If you are using SAE value, access “Miscellaneous” menu and change from “DIN” to “SAE” → operating manual MCR340V.
Note Always use DIN value from battery sticker! Otherwise, test result will be falsified.

Assessing test results

Results of battery test:
Battery test results Measures
Battery OK None
Good - charge Charge battery → Chapter.
Use Incharge Charge battery → Chapter.
Renew battery Renew battery → Electrical system; Rep. gr.27
Battery cell defective Renew battery → Electrical system; Rep. gr.27

Test yourself

A quick Volkswagen Golf quiz: every answer comes with an explanation and a link to the manual page.