Battery -A-, DISCONNECTING AND CONNECTING, 0K4 AND VH0: Connecting
WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
-- Secure the ground wire -4- on the body.
-- Connect the connector -3- on the Auxiliary Battery -A1-.
When the battery is reconnected, the following steps must be performed:
- Activate the power window regulator one-touch up/down function. Refer to the Owner's Manual.
- Check DTC memories of all control modules and delete the displayed entry "Undervoltage" using the Vehicle Diagnostic Tester.
TIP:
After reconnecting the power supply, the ESP warning lamp can only go out after the vehicle has been driven a few meters.
Tightening Specifications