Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Mercedes Benz GLS580FACTORY OEM SERVICE PROCEDURE
Electrical System - Engine - 167 Chassis
- General Information
- Basic Knowledge
- Testing & Repair
- Remove/Install Ignition Coils
- Remove/Install Ignition Coils - AR15.12-P-2003MSC
- Remove/Install Ignition Coils Of Left Cylinder Bank - AR15.12-P-2008MNO
- Remove/Install Ignition Coils Of Left Cylinder Bank - AR15.12-P-2008MNP
- Remove/Install Ignition Coils Of Right Cylinder Bank - AR15.12-P-2009MNO
- Remove/Install Ignition Coils Of Right Cylinder Bank - AR15.12-P-2009MNP
- Remove/Install Crankshaft Hall Sensor
- Remove/Install Camshaft Sensor
- Remove/Install Knock Sensor
- Remove/Install Left Front Knock Sensor - AR15.12-P-2186MNO
- Remove/Install Left Front Knock Sensor - AR15.12-P-2186MSC
- Remove/Install Left Rear Knock Sensor - AR15.12-P-2187MNO
- Remove/Install Left Rear Knock Sensor - AR15.12-P-2187MNP
- Remove/Install Left Rear Knock Sensor - AR15.12-P-2187MSC
- Remove/Install Right Front Knock Sensor - AR15.12-P-2188MNO
- Remove/Install Right Rear Knock Sensor - AR15.12-P-2189MNO
- Remove/Install Fuel Injection System Engine Wiring Harness - AR15.18-P-0003MSC
- Remove/Install Crankcase Engine Wiring Harness - AR15.18-P-0006MSC
- Remove/Install Cylinder Head Engine Wiring Harness - AR15.18-P-0007MSC
- Disconnect/Connect Engine Wiring Harness To Remove Engine
- Disconnect/Connect Engine Wiring Harness To Remove Right Cylinder Head Cover - AR15.18-P-1000-06MNO
- Disconnect/Connect Engine Wiring Harness To Remove Right Cylinder Head Cover - AR15.18-P-1000-06XGC
- Disconnect/Connect Engine Wiring Harness To Remove Left Cylinder Head Cover - AR15.18-P-1000-07MNL
- Disconnect/Connect Engine Wiring Harness To Remove Left Cylinder Head Cover - AR15.18-P-1000-07MNP
- Tightening Procedure Of Integrated Starter Alternator - AR15.40-P-0003-01MRT
- Determine Gap Between Stator And Rotor
- Perform Resistance Measurement Of Coils Of Integrated Starter Alternator
- Detach/Attach Tool For Installation/Removal Of Integrated Starter Alternator
- Remove/Install Integrated Starter Alternator
- Remove/Install Integrated Starter Alternator Control Unit
- Remove/Install Coolant Temperature Sensor
- Remove/Install Ignition Coils
- Test & Adjustment Values
- Maintenance
- Torque Specifications
- Tightening Torques: Passenger Cars: Electrical System - Engine - BA15.00-Z-9999AZ
- Ignition System
- Knock Sensors
- Position Sensor
- Ignition Coil
- Ground Strap - BA15.10-P-1000-05F
- Engine Wiring Harness
- 48 V On-Board Electrical System Subharness
- Starter - BA15.30-P-1000-01T
- Generator - BA15.40-P-1000-01T
- Integrated Starter Alternator
- Temperature Sensor - BA15.60-P-1000-02MRT
- Wiring Diagrams
- Special Tools
- 124 589 09 63 00 Ohm Decade - WS15.00-N-0009C
- 201 589 00 99 00 Electrical Connection Kit - WS15.00-N-0014C
- 124 589 09 63 00 Ohm Decade - WS15.00-P-0009C
- 602 589 00 10 00 Socket Wrench - WS15.00-P-0015B
- 177 589 00 63 00 Adapter Cable, 5-Pin - WS15.00-P-0023B
- 177 589 01 63 00 Adapter Cable, 4-Pin - WS15.00-P-0025B
- 281 589 01 63 00 Adapter Cable - WS15.00-P-0026B
- 000 588 03 19 00 Load Tester - WS15.00-P-0027B
- 256 589 01 31 00 Support Fixture - WS15.00-P-0029B
- 256 589 01 23 00 Gauge - WS15.00-P-0047B
- 278 589 00 09 00 Spark Plug Wrench - WS15.00-P-0065B
- 256 586 00 09 00 Socket Wrench Socket - WS15.00-P-0070A
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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