No-Load Voltage, Checking

No-load Voltage, Checking

Special tools, testers and auxiliary items required







- Multimeter VAG 1526 B, Fluke 83 or equivalent

Test requirements
- Always heed the following, otherwise correct measurement is not guaranteed.

NOTE:
- If no load voltage measurement is carried out with the battery installed in vehicle, disconnect negative (-) battery terminal.
- The battery must not be loaded by connected power consumers for at least 2 hours before making measurements.
- The battery must not be charged for at least 2 hours before making the measurements.

CAUTION:
- On vehicles equipped with Audi Telematics by OnStar(R), switch-off the emergency (back- up) battery for the Telematic/Telephone Control Module prior to disconnecting vehicle battery
- After reconnecting vehicle battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows according to Owners Manual.
- After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar(R), switch-on the emergency (back-up) battery for the Telematic/Telephone Control Module
- Switch off all electrical consumers.
- Switch the ignition off and remove ignition key.







- Slide battery cover to right - arrow 1- and lift off - arrow 2- where applicable.







- Disconnect negative (-) terminal - arrow - from battery post.
- Measure voltage between battery posts.
- Battery is OK if measuring instrument reading is 12.5 V or above.
- The battery no-load voltage must at no time be less than 12.5 Volts, otherwise the battery must be recharged immediately.
- Repeat voltage measurement between terminals.
- Battery no-load voltage must not be less than 12.5 Volts.
- If no-load voltage is not OK, replace battery.

Install in reverse order of removal, noting the following:
- Reconnect battery. Required steps.