300SL R129 L6-3.0L M104 (1991): 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 (126.024) L6-3.0L (103.981) (1989), 300SE (140.032) L6-3.2L (104.990) (1992), 300SEL (126.025) L6-3.0L (103.981) (1988), 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).

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

1. 01Relays and ModulesRelays and Modules: Sections
   • Relays and Modules - Accessories and Optional Equipment14 pages

     • Alarm Module, (Vehicle Antitheft) › Component Information › Locations
     • Crash Control Module › Component Information › Testing and Inspection
     • Emergency Contact Module › Component Information › Diagrams › Diagram Information and Instructions23456
     • Ignition Shut Down Relay (For Antitheft) › Component Information › Locations
     • Keyless Entry Module › Component Information › Locations23
     • Relay Module › Component Information › Technical Service Bulletins › Turn Signals/Headlamps ON, Ignition Turned OFF2
   • Relays and Modules - Body and Frame35 pages

     • Convertible Top Control Module › Component Information10 pages

       • Technical Service Bulletins › Convertible/Roll Bar - Hydraulic Unit Modifications23456
       • Service and Repair › Procedures234
     • Convertible Top Hydraulic Control Unit › Component Information10 pages

       • Locations2
       • Service and Repair › Procedures2345678
     • Convertible Top Relay › Component Information › Locations
     • Keyless Entry Module › Component Information › Locations23
     • Power Mirror Control Module › Component Information › Locations
     • Roll Bar Control Module › Component Information9 pages

       • Locations2345
       • Service and Repair › Remove/Install Soft Top Control Module234
     • Seat Heater Control Module › Component Information › Locations
   • Relays and Modules - Brakes and Traction Control29 pages

     • ABS Light Relay › Component Information › Technical Service Bulletins › ABS MIL ON & OFF Intermittently
     • Brake Fluid Pump Relay › Component Information › Locations2
     • Brake Fluid Solenoid Valve Relay › Component Information › Locations
     • Electronic Brake Control Module › Component Information11 pages

       • Technical Service Bulletins6 pages

         • Customer Interest: › P-42_45-77 › Jul › 07 › ABS/TCS - ESP Lamp ON/Code C1142 Set2
         • All Technical Service Bulletins for Electronic Brake Control Module:3 pages

           • P-42_45-93 › Jan › 08 › ABS/TCS - ESP Indicator ON Diagnostics
           • P-42_45-77 › Jul › 07 › ABS/TCS - ESP Lamp ON/Code C1142 Set2
         • All Other Service Bulletins for Electronic Brake Control Module: › P-42_45-93 › Jan › 08 › ABS/TCS - ESP Indicator ON Diagnostics
       • Locations › ABS Control Module (Models without ASR)2
       • Description and Operation › ABS/ASR Control Unit23
     • Traction Control Module › Component Information14 pages

       • Technical Service Bulletins6 pages

         • Customer Interest: › P-42_45-77 › Jul › 07 › ABS/TCS - ESP Lamp ON/Code C1142 Set2
         • All Technical Service Bulletins for Traction Control Module:3 pages

           • P-42_45-93 › Jan › 08 › ABS/TCS - ESP Indicator ON Diagnostics
           • P-42_45-77 › Jul › 07 › ABS/TCS - ESP Lamp ON/Code C1142 Set2
         • All Other Service Bulletins for Traction Control Module: › P-42_45-93 › Jan › 08 › ABS/TCS - ESP Indicator ON Diagnostics
       • Locations › Component Locations2
       • Description and Operation › ABS/ASR Control Unit23456
   • Relays and Modules - Cruise Control › Cruise Control Module › Component Information5 pages

     • Technical Service Bulletins › Cruise Control Inoperative After Amplifier Replacement
     • Locations › CC/ISC Control Module2
     • Service and Repair › Control Unit2
   • Relays and Modules - HVAC5 pages

     • Condenser Fan Motor Relay, HVAC › Component Information › Locations
     • Control Module HVAC › Component Information4 pages

       • Locations
       • Service and Repair › Center and Side Air Flap Control Module23
   • Relays and Modules - Instrument Panel8 pages

     • ABS Light Relay › Component Information › Technical Service Bulletins › ABS MIL ON & OFF Intermittently
     • Audible Warning Device Control Module › Component Information › Locations
     • Instrument Panel Relay › Component Information › Technical Service Bulletins2 pages

       • Customer Interest for Instrument Panel Relay: › P-82_10_622 › Jul › 08 › Lighting - L/R Turn Signal/Headlamp Constantly ON
       • All Technical Service Bulletins for Instrument Panel Relay: › P-82_10_622 › Jul › 08 › Lighting - L/R Turn Signal/Headlamp Constantly ON
     • Lamp Out Module › Component Information › Locations2
     • Panel Illumination Control Module › Component Information › Description and Operation2
   • Relays and Modules - Lighting and Horns16 pages

     • Daytime Running Lamp Control Unit › Component Information › Locations2
     • Exterior Lighting Module › Component Information › Technical Service Bulletins › Ext. Lamp - MIL ON When Turn Signals are Used
     • Headlamp Control Module › Component Information8 pages

       • Technical Service Bulletins › Main Beam/Low Beam Not Operating2
       • Diagrams › Diagram Information and Instructions23456
     • Headlamp Igniter Module › Component Information › Technical Service Bulletins › High/Low Beams Do Not Function
     • Horn Relay › Component Information › Locations2
     • Lamp Out Module › Component Information › Locations2
   • Relays and Modules - Power and Ground Distribution26 pages

     • Power Distribution Module › Component Information › Diagrams › Diagram Information and Instructions234567891011121314
     • Power Distribution Relay › Component Information › Locations23
     • Relay Box › Component Information9 pages

       • Locations › Fuse and Relay Box Locations23
       • Diagrams › Diagram Information and Instructions23456
   • Relays and Modules - Powertrain Management67 pages

     • Relays and Modules - Computers and Control Systems40 pages

       • Body Control Module › Component Information › Locations
       • Electronic Throttle Control Module › Component Information3 pages

         • Technical Service Bulletins › Fuel - High Idle After Cold Start/Future Recalls
         • Locations › EA/CC/ISC Control Module2
       • Engine Control Module › Component Information27 pages

         • Technical Service Bulletins › ASR MIL Comes On After Engine Start, Code C102223
         • Diagrams › Diagram Information and Instructions2345678
         • Description and Operation › Engine Systems (MAS)234567891011
         • Testing and Inspection › Diagnostic Trouble Code Descriptions2345
       • Idle/Throttle Speed Control Unit › Component Information4 pages

         • Technical Service Bulletins › Fuel - High Idle After Cold Start/Future Recalls
         • Locations › Component Locations23
       • Main Relay (Computer/Fuel System) › Component Information › Technical Service Bulletins › Engine - Cuts Out When Stopping/Intermittent Idle Surge234
       • Overvoltage Protection Relay › Component Information › Description and Operation
     • Relays and Modules - Fuel Delivery and Air Induction22 pages

       • Fuel Pump Relay › Component Information › Technical Service Bulletins › Engine - Long Crank Time Before Start/Misfire/Runs Rough2345678910111213
       • Idle/Throttle Speed Control Unit › Component Information4 pages

         • Technical Service Bulletins › Fuel - High Idle After Cold Start/Future Recalls
         • Locations › Component Locations23
       • Main Relay (Computer/Fuel System) › Component Information › Technical Service Bulletins › Engine - Cuts Out When Stopping/Intermittent Idle Surge234
       • Relay, Idle Speed/Throttle Actuator - electronic › Component Information › Locations
     • Relays and Modules - Ignition System5 pages

       • Ignition Control Module › Component Information › Locations234
       • Ignition Shut Down Relay (For Antitheft) › Component Information › Locations
   • Relays and Modules - Restraint Systems36 pages

     • Air Bag Control Module › Component Information24 pages

       • Technical Service Bulletins › Airbag Control Module - DTCs 3 + 9, No Erasure2
       • Diagrams › Diagram Information and Instructions23456
       • Description and Operation › ETR Control Module with Airbag, General Information234567
       • Testing and Inspection › Component Tests and General Diagnostics2
       • Service and Repair › Procedures234567
     • Seat Belt Control Module › Component Information12 pages

       • Technical Service Bulletins › Emergency Tensioning Retractor DTC Readout 10234
       • Diagrams › Diagram Information and Instructions23456
       • Description and Operation › Emergency Tensioning Retractor Control Module With Airbag2
   • Relays and Modules - Starting and Charging › System Information › Technical Service Bulletins › Electrical - Electrostatic Discharge Damage Prevention
   • Relays and Modules - Steering and Suspension2 pages

     • Relays and Modules - Steering › Steering Column Control Module › Component Information › Locations
     • Relays and Modules - Suspension › Suspension Control Module › Component Information › Locations
   • Relays and Modules - Transmission and Drivetrain8 pages

     • Relays and Modules - A/T7 pages

       • Control Module, A/T › Component Information5 pages

         • Technical Service Bulletins › Intermittent No Fifth/Erratic Fourth to Fifth to Fourth2
         • Description and Operation › GF27.19-P-4012-02G ETC Control Module, Task23
       • Shift Solenoid Relay, A/T › Component Information › Locations2
     • Relays and Modules - Differential › Control Unit, Differential Lock › Component Information › Technical Service Bulletins › After ASD Control Replacement, ASD MIL Flashes
   • Relays and Modules - Windows and Glass › Heated Glass Element Relay › Component Information › Locations › Rear Window Defroster Relay Module23
2. 02Sensors and SwitchesSensors and Switches: Sections
3. 03MaintenanceMaintenance: Sections
4. 04Engine, Cooling and ExhaustEngine, Cooling and Exhaust: Sections
5. 05Powertrain ManagementPowertrain Management: Sections
6. 06Transmission and DrivetrainTransmission and Drivetrain: Sections
7. 07Brakes and Traction ControlBrakes and Traction Control: Sections
8. 08Starting and ChargingStarting and Charging: Sections
9. 09Power and Ground DistributionPower and Ground Distribution: Sections
10. 10Steering and SuspensionSteering and Suspension: Sections
11. 11Heating and Air ConditioningHeating and Air Conditioning: Sections
12. 12Restraint SystemsRestraint Systems: Sections
13. 13Accessories and Optional EquipmentAccessories and Optional Equipment: Sections
14. 14Body and FrameBody and Frame: Sections
15. 15Cruise ControlCruise Control: Sections
16. 16Instrument Panel, Gauges and Warning IndicatorsInstrument Panel, Gauges and Warning Indicators: Sections
17. 17Lighting and HornsLighting and Horns: Sections
18. 18Windows and GlassWindows and Glass: Sections
19. 19Wiper and Washer SystemsWiper and Washer Systems: Sections