Carefully! On vehicles with the Telematik system, before disconnecting the battery, activate the service mode of the Telematik control unit - radio, telephone, navigation.
Relay board, component fuse box
1. 9-pin relay box, fuse box behind driver side storage compartment
2. Left A-pillar connector in the A-pillar footwell
3. 6+6-socket relay box in the footwell on the left under the floor
4. 3-pin relay box in space for hgt left under floor
5. Switching box A-pillar on the right in the footwell on the right on the A-pillar
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