Removing and installing electrical center

AR54.25-S-1382A

18.1.10

MODEL 638
An der Lenksäule

S54.25-1001-09

1 Cover

2 Paneling

3 Bolt

4 Bolt

5 Nut

A12 Electrical center (without steering column switch)

A12.1 Electrical center (steering column switch connector)

A12.2 Electrical center (main power switch connector)

A12.3 Electrical center (frame wiring harness connector)

A12.4 Electrical center (frame wiring harness connector)

A12.5 Electrical center (frame wiring harness connector)

A12.6 Connector

 	Removing, installing
1	Disconnect ground cable of battery		AR54.10-S-0005A
2	Detach cover (1)
3	Unscrew bolts (3)
4	Detach paneling (2)
5	Remove contact spiral	Only with code SA5 (driver airbag)	AR46.10-S-0200A
		 Do not unscrew the bolts all the way. The bolts also act as an anti-rotation device. The contact spiral must never be opened under any circumstances.
6	Loosen electrical center (A12) by unscrewing bolt (4) and nut (5)	Installation: Do not tilt the electrical center (A12) when tightening.
			*BA54.25-N-1001-01A
			*BA54.25-N-1002-01A
7	Unplug electrical connectors from electrical center (A12)
8	Remove electrical center (A12)
9	Install in the reverse order

 Switches

Number	Designation		Model 638


BA54.25-N-1001-01A	Bolt, electrical center to steering column switch	Nm	4
BA54.25-N-1002-01A	Nut, electrical center to steering column	Nm	6