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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Starter >> Charging System (Battery, Starter And Generator) & Cruise Control (1 Of 2) >> 27 Battery, Starter, Generator, Cruise Control >> Battery >> Battery, Disconnecting And Connecting >> Battery -A-, DISCONNECTING AND CONNECTING, 0K4 AND VH2 >> Connecting

Battery -A-, DISCONNECTING AND CONNECTING, 0K4 AND VH2: Connecting

Fig 1: Connecting Battery
GWWA27-10252Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -2- from the Battery Monitoring Control Module -J367- -3-.

-- Attach the battery ground cable clamp by hand to the battery negative terminal "-" and tighten the nut -1-.

-- Reconnect the connector to the Battery Monitoring Control Module -J367-.

-- Re-energize the 48V system. Refer to 48V SYSTEM, RE-ENERGIZING .

When the battery is reconnected, the following steps must be performed:

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