Home >> BMW >> 2021 >> X3 xDrive30e >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Motor Systems >> General Electrical System -- Repair (1 Of 2) (G01) >> 61 20 Battery >> 61 20 900 Disconnecting and connecting battery ground lead (All negative battery cables) (X3 xDrive 30e PHEV) >> Install battery cover in trunk