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Home >> BMW >> 2018 >> i3 Range Extender >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> General Electrical System - Repair >> Battery (Vehicles With Range Extender) >> 61 21... Remove and install (replace) battery tray
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61 21... Remove and install (replace) battery tray

WARNING: High-voltage system - risk of serious injury or death. 
The following points must be strictly observed prior to starting work  :
Disconnect HIGH-VOLTAGE SYSTEM  from power
Observe SAFETY INFORMATION  for handling electric/hybrid vehicles.

Necessary preliminary tasks: 

Release screws (1; 2).

Tightening torque 61 21 3AZ .

Remove battery tray (3).

Fig 1: Identifying Battery Tray And Screws
G11147917Courtesy of BMW OF NORTH AMERICA, INC.