Mercedes-Benz ML320. Manual — part 2

UNDEPLOYED AIR BAG/ETR

After deploying procedures and/or diagnostic testing have confirmed air bag module and/or ETR is
undeployable, contact vehicle manufacturer for proper disposal instructions.

REMOVAL & INSTALLATION

CLOCKSPRING ASSEMBLY

Removal & Installation

1. Before proceeding, see SERVICE PRECAUTIONS . Disable air bag system. See DISABLING &

ACTIVATING AIR BAG SYSTEM .

2. Remove driver air bag module. See DRIVER-SIDE AIR BAG MODULE . Remove steering wheel bolt.

Using a puller, remove steering wheel. Disconnect lower clockspring connector. Turn 2 fixing screws
(locating on clockspring) counterclockwise until clockspring cannot be rotated. Remove clockspring
mounting screws as necessary. Disconnect all necessary electrical connectors. Remove clockspring
assembly. To install, reverse removal procedure. Activate air bag system. See DISABLING &
ACTIVATING AIR BAG SYSTEM . Perform system operation check to ensure system is functioning
properly. See SYSTEM OPERATION CHECK .

CONTROL UNIT

Removal & Installation (C Class)

1. Before proceeding, see SERVICE PRECAUTIONS . Disable air bag system. See DISABLING &

ACTIVATING AIR BAG SYSTEM . Remove ignition key. Remove shift lever cover bezel. Lift shift
lever cover enough to disconnect electrical connector. Remove shift lever cover.

2. Remove storage compartment mounting screws from center console. Remove storage compartment.

Remove ashtray. Disconnect electrical connectors as necessary. Disconnect control module electrical
connector. Remove control module mounting bolts. Remove control module.

3. To install, reverse removal procedure. Ensure control module arrow points to front of vehicle. Set

parameters and program new control module with Hand-Held Tester (965 589 00 01 00). Activate air bag
system. Perform system operation check to ensure system is functioning properly. See SYSTEM
OPERATION CHECK .

Removal & Installation (E Class)

1. Before proceeding, see SERVICE PRECAUTIONS . Disable air bag system. See DISABLING &

ACTIVATING AIR BAG SYSTEM . Remove ignition key. Remove gear shift cover panel. Remove
ashtray and ashtray housing at front of console. Remove radio (if necessary).

2. Remove center console right side cover screws and right side cover. Disconnect electrical connector for

control unit. Remove 2 control unit mounting screws. Remove control unit.

WARNING:

Failure to follow service precautions may result in air bag deployment and
personal injury. See SERVICE PRECAUTIONS . After component
replacement, check system operation. See SYSTEM OPERATION CHECK .

1998 Mercedes-Benz ML320

AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz

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3. To install, reverse removal procedure. Ensure control module arrow points to front of vehicle. Set

parameters and program new control module with Hand-Held Tester (965 589 00 01 00). Activate air bag
system. Perform system operation check to ensure system is functioning properly. See SYSTEM
OPERATION CHECK .

Removal & Installation (S Class)

1. Before proceeding, see SERVICE PRECAUTIONS . Disable air bag system. See DISABLING &

ACTIVATING AIR BAG SYSTEM . Remove ignition key. Remove radio. Remove ashtray. Remove
wooden surround for ashtray. Remove shift lever cover mounting screws. Push shift lever cover toward
rear of vehicle and remove in an upward direction.

2. Remove center console cover screws. Remove center console cover by pulling from bottom in an upward

direction. When removing covers, disconnect electrical connectors as necessary. Disconnect control
module electrical connector. Remove control module.

3. To install, reverse removal procedure. Ensure control module arrow points to front of vehicle. Set

parameters and program new control module with Hand-Held Tester (965 589 00 01 00). Activate air bag
system. Perform system operation check to ensure system is functioning properly. See SYSTEM
OPERATION CHECK .

Removal & Installation (SL Class)

1. Before proceeding, see SERVICE PRECAUTIONS . Disable air bag system. See DISABLING &

ACTIVATING AIR BAG SYSTEM . Remove ignition key. Remove radio. Push up and pull out heater
control panel. Unplug 2 connectors. Remove screw in middle of storage tray.

2. Bend up at top corners and lift out storage tray. Remove screws below storage tray. Lift wood trim panel

at rear, pull down and out of catches. Unplug switch connectors and remove wood trim panel. Unplug
connectors at control unit and remove Torx mounting screws. Remove control unit.

3. To install, reverse removal procedure. Ensure control module arrow points to front of vehicle. Set

parameters and program new control module with Hand-Held Tester (965 589 00 01 00). Activate air bag
system. Perform system operation check to ensure system is functioning properly. See SYSTEM
OPERATION CHECK .

Removal & Installation (CLK 320 & SLK 230)

1. Before proceeding, see SERVICE PRECAUTIONS . Disable air bag system. See DISABLING &

ACTIVATING AIR BAG SYSTEM . Remove ignition key. Remove cover on center console. Remove
cover on shift lever. Remove ash tray housing with storage compartment at front of center console.
Unplug connectors at control unit and remove Torx mounting screws. Remove control unit.

2. To install, reverse removal procedure. Ensure control module arrow points to front of vehicle. Set

parameters and program new control module with Hand-Held Tester (965 589 00 01 00). Activate air bag
system. Perform system operation check to ensure system is functioning properly. See SYSTEM
OPERATION CHECK .

DRIVER-SIDE AIR BAG MODULE

NOTE:

Air bag module and steering wheel must be replaced following a collision in

1998 Mercedes-Benz ML320

AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz

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Removal & Installation

1. Before proceeding, see SERVICE PRECAUTIONS . Disable air bag system. See DISABLING &

ACTIVATING AIR BAG SYSTEM . Remove ignition key. Remove 2 Torx screws from rear of
steering wheel. Lift off air bag module enough to unplug connector from rear of module. Place module
away from work area, with pad facing upward.

2. To install, reverse removal procedure. Tighten Torx screws to specification. See TORQUE

SPECIFICATIONS . Activate air bag system. Perform system operation check to ensure system is
functioning properly. See SYSTEM OPERATION CHECK .

SIDE AIR BAG UNIT - DRIVER-SIDE & PASSENGER-SIDE

Removal & Installation

1. Before proceeding, see SERVICE PRECAUTIONS . Disable air bag system. See DISABLING &

ACTIVATING AIR BAG SYSTEM . Remove ignition key. Drill out rivets at retaining plate of side air
bag unit. Pull air bag unit out of door. Disconnect connector at driver-side air bag squib. Remove unit
from vehicle. See Fig. 2 .

2. To install, connect connector so that connector audibly clicks when connector engages. Install unit in

door trim panel and rivet using only special rivets (Part No. 003 990 0097). Perform system operation
check to ensure system is functioning properly. See SYSTEM OPERATION CHECK .

which air bag was deployed.

1998 Mercedes-Benz ML320

AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz

me

1998 Mercedes-Benz ML320

AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz

me