Mercedes-Benz ML320. Manual — part 816

AD54.30-P-6000-06GH

Steering lock switch, testing electrical system
of IC

Model 163

t

A

Scope of test

Measuring instrument/

Test connection

Operation/

Requirement

Specified value D Possible cause/

Remedy

1.0

Steering lock switch

(S97/1)

o

A1

b

L

14

(A.14)

Ignition: OFF

Disconnect coupling "A"

(18-pin)

Steering locked

Steering unlocked

< 1 W

> 20 kW

D Cables

D (S97/1)

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AR91.60-P-0660GH

Removing and installing airbag unit on steering wheel

27.2.01

MODEL

163.113 /128 /136 /154 /157 /172 /174 /175

P91.60-2339-11

up to 31.08.01

1

Airbag unit

2

Bolts

4

Connector

P91.60-2340-05

as of 01.09.01

1

Airbag unit

3

Arresting mechanism

4

Connector

5

Connector

Remove/install

Danger!

Injury hazard when performing test and
repair work on airbags and emergency
tensioning retractors

Store airbag unit with expulsion area on top,
do not subject to temperatures above 100 °C.
Interrupt power supply when working on such
units.

AS91.00-Z-0001-01A

Important instructions for performing repair,
body work and welding on vehicles with
airbag and emergency belt tensioner units

Models 129 as of 1.7.93, 163, 168, 170, 202
as of 1.7.93, 208, 210, 414, 638, 690.6, 901,
902, 903, 904, 905

Model 461 with engine 602.983

Model 463 up to 30.11.00

Model WD141, WD241, WD341, WD641,
WD741, XD141, XD241, XD341, XD441,
XD541, XD641, XD741, YD141, YD241,
YD341, YD441, YD541, YD641, YD741

AH91.00-P-0002-01B

Legal provisions concerning handling and
storage of airbag and emergency tensioning
retractor units

Models 124, 129, 140, 163, 168, 170, 202,
203, 208, 209, 210, 211.004/ 006/ 016/ 061/
065/ 070, 215, 220, 230, 314, 316, 318, 414,
461, 463, 638, 668, 670, 690.6, 901, 902,
903, 904, 905, 950, 952, 953, 954, 970, 972,
974, 975, 976

Model WD141, WD241, WD341, WD641,
WD741, XD141, XD241, XD341, XD441,
XD541, XD641, XD741, YD141, YD241,
YD341, YD441, YD541, YD641, YD741

AH91.00-P-0004-01A

o

Notes regarding the disposal of airbag and
belt tensioner units

All models

OS91.00-P-0001-01A

1

Separate ground cable of battery

AR54.10-P-0003A

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2

Remove screws (2)

Starting from the straight-ahead position,

turn steering wheel by 90 to obtain better
access to the bolts.

*BA91.60-P-1001-01A

Screwdriver bit

*126589001000

3

Lift airbag unit from steering wheel

4.1

Open arresting mechanism (3) on plug
connector (4)

Up to 31.08.01.

4.2

Open arresting mechanism (3) on both plug
connectors (4, 5)

As of 01.09.01.

5.1

Unplug plug connector (4) from squib

Up to 31.08.01.

Installation: plug connector should latch

audibly.

5.2

Unplug connector (4, 5) from squib.

As of 01.09.01.

Installation: plug connector should latch

audibly. Close arresting mechanism (3) on the
plug connectors after latching.

6

Remove airbag unit (1) out of steering wheel

If airbag unit is replaced:

#

Make airbag units unusable

AR91.60-P-0611A

7

Install in the reverse order

The steering wheel must always be

replaced after the driver airbag unit has
deployed.

8

Check automatic return of combination switch

9

Carry out diagnosis

According to specifications in diagnosis

manual.

Airbag

Number

Designation

Model 163

BA91.60-P-1001-01A

Screw for airbag to steering wheel

NM

8

126 589 00 10 00

Screwdriver bit

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AR46.10-P-0200GH

Removing, installing contact spiral

1.3.97

MODEL

163.113 /128 /136 /154 /157 /172 /174 /175

P46.10-0460-01

P46.10-0461-01

P46.10-0399-01

Remove/install

1

Remove steering wheel

Front wheels centered

AR46.10-P-0100GH

2

Only unscrew the mounting screws (32h) until
the fanfare horns and airbag clock spring
contact (A45) can be removed

The fastening bolts also act as protection

against twisting and as an assembly aid.

3

Remove the fanfare horns and airbag clock
spring contact (A45) carefully from the jacket
tube

Installation: Push on fanfare horns and

airbag clock spring contact (A45) as far as the
stop. In the process the recess must align
with the fixing lug (arrow)

If the clock spring contact twists out of

position, i.e., if the steering joint is removed:

#

Set the clock spring contact to center position AR46.10-P-0200-01GH

4

Unlock plug and disconnect the connector
(38d) from the fanfare horns and airbag clock
spring contact (A45

5

Check fanfare horns and airbag clock spring
contact (A45) for damage

Visual inspection

Do not use any oil or grease!

The upper (32f) and lower part (32g) of

the clock spring contact are clipped together
and can only be separated by the effect of
high forces or due to defective assembly. If
the spring contact is assembled incorrectly,
carefully unwind and clip the upper and lower
parts together. Be careful not to trap or bend
the spring contact (32e).

6

Install in the reverse order

Copyright DaimlerChrysler AG 09.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorded by Modification services.

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