Battery Main Switch and Disconnect Switch (E74)

Battery Main Switch and Disconnect Switch (E74)

Special tools, testers and auxiliary items required

• Torque Wrench (V.A.G 1331)


When disconnecting and connecting the battery, always perform the work procedure as described in the repair manual. Refer to => [ Battery, Disconnecting and Connecting ] Battery, Disconnecting and Connecting. Not adhering to sequence will result in the deactivation of Main Battery Switch -E74- and subsequent damage to electrical system components.

Removal


When disconnecting battery, procedure must always be followed as described in => [ Disconnecting Sequence ] One-Battery Layout with Auxiliary Battery and Two Battery Layout, Disconnecting and Connecting. Not adhering to sequence will result in the deactivation of Main Battery Switch -E74- and subsequent damage to electrical system components.

- Disconnect the battery. Refer to => [ Battery, Disconnecting and Connecting ] Battery, Disconnecting and Connecting.

- Release retaining tab - arrow - and remove cover.






- If necessary, remove the lead coating on the multi-pin connector.

- Open protective cap - 1 - of multi-pin harness connector, disengage retaining tab - 2 - and disconnect harness connector.






- Remove the M8 nuts - arrows - and remove battery isolation system.






Installation

Install in reverse order of removal. Note the following:

- Tighten the fasteners to the specification shown in => [ Fastener Tighten Specifications, Battery ] [1][2]Battery.

- If necessary, replace seal on multi-pin harness connector.


• When connecting battery, always perform work procedure as described in => [ Connecting Sequence ] One-Battery Layout with Auxiliary Battery and Two Battery Layout, Disconnecting and Connecting. Not adhering to sequence will result in the deactivation of Main Battery Switch -E74- and subsequent damage to electrical system components.

• Observe notes for threaded connections of battery terminals. Refer to => [ Battery Post/Terminal ] Battery Post/Terminal.

- Connect battery. Refer to => [ Battery, Disconnecting and Connecting ] Battery, Disconnecting and Connecting.