300SE W126 L6-3.0L M103 (1989): Relays and Modules

Also for this vehicle: 300CD (123.153) L5-3.0L DSL Turbo (617.952) (1982), 300CE (124.050) L6-3.0L (103.983) (1989), 300CE (124.051) L6-3.0L (104.980) (1990), 300CE (124.052) L6-3.2L (104.992) (1993), 300D (123.133) L5-3.0L DSL Turbo (617.952) (1984), 300D (124.128) L5-2.5L DSL Turbo (602.962) (1991), 300D (124.133) L6-3.0L DSL Turbo (603.960) (1987), 300E (124.026) L6-2.6L (103.940) (1990), 300E (124.030) L6-3.0L (103.983) (1986), 300E (124.032) L6-3.2L (104.992) (1993), 300E 4MATIC (124.230) L6-3.0L (103.985) (1990), 300SD (126.120) L5-3.0L DSL Turbo (617.951) (1982), 300SD (140.134) L6-3.5L DSL Turbo (603.971) (1993), 300SDL (126.125) L6-3.0L DSL Turbo (603.961) (1987), 300SE (140.032) L6-3.2L (104.990) (1992), 300SEL (126.025) L6-3.0L (103.981) (1988), 300SL (129.061) L6-3.0L (104.981) (1991), 300TD (123.193) L5-3.0L DSL Turbo (617.952) (1984), 300TE (124.090) L6-3.0L (103.983) (1989), 300TE 4MATIC (124.290) L6-3.0L (103.985) (1991), 350SDL (126.135) L6-3.5L DSL Turbo (603.970) (1990), 380SEC (126.043) V8-3.8L (116.963) (1982), 380SL (107.045) V8-3.8L (116.960) (1982).

Diagnostics Maintenance Engine Transmission Brakes Electrical Steering & suspension Heating & A/C Body & interior

Choose Sections to see everything in a chapter, or a chapter title to start at its first page.

01Relays and Modules Relays and Modules: Sections
- Relays and Modules - Accessories and Optional Equipment17 pages
  - Alarm Module, (Vehicle Antitheft) › Component Information9 pages
    Locations
    Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8
  - Antenna Relay › Component Information › Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8
- Relays and Modules - Body and Frame47 pages
  - Head Restraint Relay › Component Information › Locations
  - Power Seat Control Module › Component Information10 pages
    Locations › Front Power Seat Control Unit2
    Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8
  - Power Seat Relay › Component Information11 pages
    Locations2 3
    Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8
  - Seat Heater Control Module › Component Information9 pages
    Locations
    Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8
  - Seat Heater Relay › Component Information14 pages
    Locations › Seat Heater Relay2 3 4 5 6
    Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8
  - Sunroof / Moonroof Relay › Component Information › Technical Service Bulletins › Sunroof - Modifed Drive Unit and Relay2
- Relays and Modules - Brakes and Traction Control31 pages
  - ABS Main Relay › Component Information › Locations2
  - Electronic Brake Control Module › Component Information17 pages
    Locations
    Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8 9 10 11
    Testing and Inspection › Pinout Values and Diagnostic Parameters2 3 4 5
  - Traction Control Module › Component Information › Locations › ASD Valve2
  - Voltage Protection Relay, ABS › Component Information10 pages
    Locations2
    Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8
- Relays and Modules - Cooling System › Radiator Cooling Fan Motor Relay › Component Information11 pages
  - Locations2 3
  - Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8
- Relays and Modules - Cruise Control7 pages
  - Cruise Control Module › Component Information6 pages
    Technical Service Bulletins › Cruise Control Inoperative After Amplifier Replacement
    Locations › Cruise Control Amplifier2 3
    Service and Repair › Control Unit2
  - Cruise Control Relay › Component Information › Locations
- Relays and Modules - HVAC › Compressor Clutch Control, HVAC <--> [Compressor Clutch Relay] › Component Information › Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8
- Relays and Modules - Instrument Panel7 pages
- Relays and Modules - Lighting and Horns14 pages
- Relays and Modules - Power and Ground Distribution › Relay Box › Component Information › Locations2 3 4 5 6
- Relays and Modules - Powertrain Management57 pages
  - Relays and Modules - Computers and Control Systems38 pages
    Engine Control Module › Component Information28 pages
    Specifications
    Locations › Electronic Ignition Control Unit (EZL)2 3 4 5 6 7 8 9
    Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8 9
    Description and Operation › Fuel Injection (CIS-E)2 3 4 5
    Testing and Inspection › Diagnostic Trouble Code Descriptions2 3 4
    Idle/Throttle Speed Control Unit › Component Information › Locations
    Main Relay (Computer/Fuel System) › Component Information › Locations2 3
    Overvoltage Protection Relay › Component Information6 pages
    Technical Service Bulletins › Overvoltage Relay/Harness - Update2 3 4
    Description and Operation › 300 E/Series2
  - Relays and Modules - Emission Control Systems › Air Injection Pump Relay › Component Information › Locations2 3
  - Relays and Modules - Fuel Delivery and Air Induction13 pages
    Fuel Pump Relay › Component Information9 pages
    Technical Service Bulletins › Engine - Hesitates/Cuts Out/Quits/Difficult to Start2 3 4 5 6 7
    Description and Operation › 300 E/Series2
    Idle/Throttle Speed Control Unit › Component Information › Locations
    Main Relay (Computer/Fuel System) › Component Information › Locations2 3
  - Relays and Modules - Ignition System › Ignition Control Module › Component Information3 pages
    Technical Service Bulletins › Engine - Cuts Out Intermittently
    Locations › Electronic Ignition Control Unit (EZL)2
- Relays and Modules - Restraint Systems23 pages
  - Air Bag Control Module › Component Information18 pages
    Technical Service Bulletins › Airbag - Production Modification SRS Control Unit2 3 4 5
    Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8
    Service and Repair › Procedures2 3 4 5
  - Seat Belt Control Module › Component Information › Description and Operation2 3 4 5
- Relays and Modules - Starting and Charging › Starter Relay › Component Information › Technical Service Bulletins › Starting System - Restart Delay Relay2 3 4 5
- Relays and Modules - Steering and Suspension › System Information › Technical Service Bulletins › Electrical - Electrostatic Discharge Damage Prevention
- Relays and Modules - Transmission and Drivetrain › System Information › Technical Service Bulletins › Electrical - Electrostatic Discharge Damage Prevention
- Relays and Modules - Windows and Glass › Power Window Relay › Component Information › Locations2 3
- Relays and Modules - Wiper and Washer Systems18 pages
  - Headlamp Washer Motor Relay › Component Information › Locations2 3
  - Headlamp Wiper Relay › Component Information › Technical Service Bulletins › Headlamp Wiper - New Relay Fixes Parking Problem
  - Windshield Washer Relay › Component Information › Locations2 3
  - Wiper Relay › Component Information11 pages
    Locations2 3
    Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8
02Sensors and Switches Sensors and Switches: Sections
03Maintenance Maintenance: Sections
04Engine, Cooling and Exhaust Engine, Cooling and Exhaust: Sections
05Powertrain Management Powertrain Management: Sections
06Transmission and Drivetrain Transmission and Drivetrain: Sections
07Brakes and Traction Control Brakes and Traction Control: Sections
08Starting and Charging Starting and Charging: Sections
09Power and Ground Distribution Power and Ground Distribution: Sections
10Steering and Suspension Steering and Suspension: Sections
11Heating and Air Conditioning Heating and Air Conditioning: Sections
12Restraint Systems Restraint Systems: Sections
13Accessories and Optional Equipment Accessories and Optional Equipment: Sections
14Body and Frame Body and Frame: Sections
15Cruise Control Cruise Control: Sections
16Instrument Panel, Gauges and Warning Indicators Instrument Panel, Gauges and Warning Indicators: Sections
17Lighting and Horns Lighting and Horns: Sections
18Windows and Glass Windows and Glass: Sections
19Wiper and Washer Systems Wiper and Washer Systems: Sections