12 13 511 Replacing ignition coils (101) (i3 base, i3s)

WARNING: High-voltage system - mortal hazard
Compliance with the following points is mandatory before beginning work:

DE-ENERGIZING THE HIGH-VOLTAGE SYSTEM .
Observe SAFETY INSTRUCTIONS for working with electric vehicles.

Preliminary work needed:

Refer to Removing INTAKE PLENUM .

IMPORTANT: Ignition coils must not be contaminated by fuel.
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail!
The silicone tube of the spark plug socket is coated with talcum powder to reduce the pulling forces. The silicone tube must NOT be oiled or greased. This would greatly reduce the durability of the silicone material, which can lead to a failure of the ignition coil.

Unlock and detach connectors (1) on ignition coils.

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Push special tool 12 3 621 onto ignition coil in arrow direction.

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Pull out ignition coil (1) with special tool 12 3 621 and remove.

Slowly pull the ignition coil (1) up and out without jerking it.

NOTE: There is a possibility that the silicone tube will tear and therefore be destroyed.

This procedure is applicable to all ignition coils.

Installation note:

Position the ignition coil and gently push it to the stop, if necessary by twisting it back and forth slightly.

The rubber cap must completely surround the sealing collar of the cylinder head cover.

NOTE: If rubber components are crushed, the ignition coil can slip out again during engine operation.

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Reconnect connectors (1) to the ignition coils. Make sure the connectors are properly engaged.

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NOTE: Assemble engine.