Torque specification MERCEDES-BENZ ML320 1997 Complete Repair Manual

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 s
ystem is functioning properly. See SYSTEM OPERATION CHECK . which air bag was deployed.

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If any part of SRS wiring harness is damaged, DO NOT repair wiring harness, replace complete wiring harness.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS
(1)
DIAGNOSIS & TESTING
Before proceeding, see SERVICE PRECAUTIONS
. The control module is capable of diagnosing airbag
system components and ETR components. If a fault is detected by the control module or system is
malfunctioning, SRS warning light will do one or more of the following:
SRS warning light goes out after 2 minutes. System fault is noted, however occupant protection is not
affected. See RETRIEVING FAULT CODES
.
SRS warning light illuminates continuously. System is faulty which may result in a non deployment or
false deployment. See RETRIEVING FAULT CODES
.
SRS warning light blinks continuously. Control module has been replaced without setting control module
parameters.
RETRIEVING FAULT CODES
1. Check vehicle fuses. Replace any blown fuses as necessary. Ensure vehicle battery voltage is 11 volts or
more. Ensure SRS warning light functions. Turn ignition off. Connect Hand-Held Tester (HHT) (965 589
00 01) to Data Link Connector (DLC).
2. DLC is located in right rear corner of engine compartment. It may be necessary to use Adapter (965 589
00 40 or 965 589 00 50) to connect HHT to DLC. After HHT displays module number and version, press
return key to start diagnosis. Using HHT, follow HHT prompts to retrieve SRS fault codes.
3. HHT will display a 3 digit fault code, and may display additional graphic information. This additional
graphic information will help in diagnosis of fault code. See Fig. 6
. During diagnosis HHT will display 4
different graphic displays informing technician if a test passes or fails, or if seat belt buckle is latched or
not latched. See Fig. 6
.
4. These
graphic displays are displayed as applicable by HHT during testing. See FAULT CODES table.
ApplicationFt. Lbs. (N.m)
Steering Wheel Hub Bolt52-66 (70-90)
INCH Lbs. (N.m)
Driver Air Bag Module Bolts (Torx)44-62 (5-7)
(1)Torque specifications are not available for clockspring assembly, control module or passenger-side
air bag module.
NOTE: After component replacement, perform a system operation check to ensure
proper system operation. See SYSTEM OPERATION CHECK
.
NOTE: Fault codes may only be retrieved using Hand-Held Tester (965 589 00 01) and
Adapter (965 589 00 40 or 965 589 00 50).

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1. Before proceeding, See AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See
DISABLING & ACTIVATI NG AIR BAG SYSTEM
. Remove ignition key. Remove radio. Push up
and pull out heater control panel. Unplug 2 connectors. Remove scre w in middle of storage tray.
2. Bend up at top corners and lift out storage tray. Rem ove screws below storage tray. Lift wood trim panel
at rear, pull down and out of catches. Unplug swit ch connectors and remove wood trim panel. Unplug
connectors at control module and remove Torx mounting screws. Remove control module.
3. To install, reverse removal proce dure. Ensure SRS control module arro w points to front of vehicle. Set
parameters and program new SRS control module wi th 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 & SLK)
1. Before proceeding, See AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See
DISABLING & ACTIVATI NG 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 module and remove Torx mounting screws. Remove control
module.
2. To install, reverse removal proce dure. Ensure SRS control module arro w points to front of vehicle. Set
parameters and program new SRS control module wi th 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
Removal & Installation
1. Before proceeding, See AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See
DISABLING & ACTIVATI NG AIR BAG SYSTEM
. Remove ignition key. Remove 2 Torx screws
from rear of steering wheel. Lift off air bag m odule 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 ch eck to ensure system is
functioning properly. See SYSTEM OPERATION CHECK
.
SIDE AIR BAG UNIT (DRIVER-SIDE & PASSENGER-SIDE)
Removal & Installation
1. Before proceeding, See AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See
DISABLING & ACTIVATI NG 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.
NOTE: Air bag module and steer
ing wheel must be replaced following a collision in
which air bag was deployed.

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2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
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TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS
(1)
WIRING DIAGRAMS
ApplicationFt. Lbs (N.m)
Steering wheel hub bolt52-66 (70-90)
INCH Lbs. (N.m)
Driver air bag module bolts (torx)44-62 (5-7)
(1)Torque specifications are not av ailable for clockspring assembly, control module or passenger-side
air bag module.

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inspected or replaced. See AIR BAG/SRS COMPONENT INSPECTION & REPLACEMENT TABLES
article in the GENERAL INFORMATION section.
REMOVAL & INSTALLATION
CLOCKSPRING
Information is not available.
CONTROL MODULE
Removal & Installation E
1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Turn ignition key to "O" position.
Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM
.
2. Remove center console. See Fig. 1
. Remove sound deadener. Remove ventilation duct. Disconnect
connectors from control module. Remove cont rol module bolts. Remove control module.
3. To install, reverse removal procedure. Tighten control modul e bolts to specification. See TORQUE
SPECIFICATIONS . Activate air bag system. Program control module. See DIAGNOSTICS.
WARNING:
Accidental air bag deployment is pos sible. Personal injury may result.
Read and follow all WARNINGS and AIR BAG SAFETY PRECAUTIONS

before working on ai r bag system or related components.

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2004 ACCESSORIES/SAFETY EQUIPMENT Merce des-Benz - Air Bag Restraint Systems
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side air bag module electrical connectors. Remove driver-side air bag module. See Fig. 2.
3. To install, reverse removal proc edure. Tighten driver-side air bag module bolts to specification. See
TORQUE SPECIFICATIONS
. Activate air bag system. Read di agnostic codes and erase memory. See
DIAGNOSTICS
.
Fig. 2: Identifying Driver
-side Air Bag Module
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
EMERGENCY TENSIONING RETRACTOR (ETR)

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Removal & Installation (Front)
1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See
DISABLING & ACTIVATI NG AIR BAG SYSTEM
.
2. Move appropriate front seat full y forward. Remove lower trim panel from outer edge of seat cushion
frame. Remove bolt from seat belt end fitting. Remove end fitting from seat cushion. Remove B-pillar
trim panel. Remove bolt from be lt height adjuster. Disconnect ET R electrical connector. Remove ETR
bolts. Remove ETR.
3. To install, reverse removal procedur e. Tighten ETR, seat belt end fitting and belt height adjuster bolts to
specification. See TORQUE SPECIFICATIONS
. Activate air bag system . Read diagnostic codes and
erase memory. See DIAGNOSTICS
.
Removal & Installation (Outer Rear)
1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See
DISABLING & ACTIVATI NG AIR BAG SYSTEM
.
2. Remove appropriate C-pillar trim panel. Remove bolt from upper seat belt guide bracket. Disconnect
ETR connector. Remove bolts from ETR. Remove ETR.
3. To install, reverse removal proc edure. Tighten ETR bolts and upper seat belt guide bracket bolt to
specification. See TORQUE SPECIFICATIONS
. Activate air bag system Read diagnostic codes and
erase memory. See DIAGNOSTICS
.
HEAD IMPACT AIR BAG MODULE (OUTER REAR)
Removal & Installation
1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See
DISABLING & ACTIVATI NG AIR BAG SYSTEM
.
2. Remove headliner. See HEADLINER
. Disconnect appropriate head im pact air bag module electrical
connector. Remove screws from rear bracket. Rem ove screws from front and center brackets. Using
Wedge (115-589-03-59-00), remove head impact air ba g module from bracket. Remove head impact air
bag module.
3. To install, reverse removal proce dure. Activate air bag system. Read diagnostic codes and erase memory.
See DIAGNOSTICS
.
HEADLINER
Removal & Installation
1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Remove edge trim from sliding/pop-up
roof. Remove front door seals from A- and B-pillars.
2. Remove A-pillar trim panels. Remove front fold ing handle. Remove sun visors and mounting clips.
Remove upper B-pillar trim panels . Remove cargo net holding point c overs. Remove load compartment
handles.
3. Remove coat hooks. Remove C-pill ar trim panels. Remove upper screws from D-pillar trim panels.
Detach rear headliner at roof. Lower headliner until it is supported on front seats. Lower front seat backs
rearward until sufficient ac cess to head impact air ba
g modules is available.

2004 Mercedes-Benz ML350
2004 ACCESSORIES/SAFETY EQUIPMENT Merce des-Benz - Air Bag Restraint Systems
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Fig. 3: Identifying Instrument Panel Components
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
PASSENGER-SIDE AIR BAG MODULE
Removal & Installation
1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Disable air bag system. See
DISABLING & ACTIVATI NG AIR BAG SYSTEM
.
2. Remove instrument panel. See INSTRUMENT PANEL
. Disconnect passenger-side air bag module
electrical connectors. Remove pass enger-side air bag module nuts. Remove passenger-side air bag
module. See Fig. 4
.
3. To install, reverse removal proc edure. Tighten passenger-side air bag module nuts to specification. See
TORQUE SPECIFICATIONS
. Activate air bag system. Read di agnostic codes and erase memory. See
DIAGNOSTICS
.

2004 Mercedes-Benz ML350
2004 ACCESSORIES/SAFETY EQUIPMENT Merce des-Benz - Air Bag Restraint Systems
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Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
WIRE REPAIR
DO NOT repair wiring harness. Replace complete SRS wiring harn ess, if any part is damaged.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS
DIAGNOSTICS
Air bag system diagnostic information is not available. All air bag system diagnosis must be carried out using
manufacturers proprietary STAR diagnostic tool.
WIRING DIAGRAMS
ApplicationFt. Lbs. (N.m)
Front ETR
Belt end fitting26 (35)
Belt height adjuster bolt18 (25)
Bolts22 (30)
Rear ETR
Belt height adjuster bolt22 (30)
Bolts22 (30)
INCH Lbs. (N.m)
Control module bolts(1)
Driver-side air bag module bolts71 (8)
Head impact air bag module bolts71 (8)
Passenger-side air bag module nuts71 (8)
Side impact sensor screws(1)
(1)Information is not available.

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13 - Remove torque converter using 168 589 00 62 00 Grab Handle. See Fig. 9.
14 - Install in reverse order. Torque to specifications. See Fig. 5
- Fig. 8 .
15 - Inspect ATF level in automatic transmission, add ATF if necessary.
Fig. 5: Housing Torque Specifications

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.NOTE: Push retainer (11) upwards.
NOTE: Secure torque converter to prevent it from falling out.
NOTE: Grease the torque converter lightly on drive flange.
NOTE: When refilling or after an oil change pour in approximately 5 quarts of
transmission oil first.

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1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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