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.
2018 Mercedes Benz GLS450FACTORY OEM SERVICE PROCEDURE
Electrical Drive System - 166 Chassis
- General Information
- Basic Knowledge
- Alternative Drives, Basic Function - GF08.00-P-9900A
- (Electric Drive, Basic Function - GF08.00-P-9901A)
- (Electric Machine, Basic Function - GF08.10-P-2000A)
- Component Description For Power Electronics Control Unit - GF08.20-P-1001GRH
- High-Voltage Charger Control Unit, Component Description - GF08.20-P-2000GRH
- Electric Drive Sound Generator, Basic Function - GF08.20-P-9890A
- Power Electronics Control Unit, Basic Function - GF08.20-P-9891A
- (Electric Drive Powertrain Control Unit, Basic Function - GF08.20-P-9892A)
- Hybrid Drive System Energy Flow-Pictures - GF08.30-P-0001-02GRH
- Hybrid Drive System Display Of Charge Level Of High-Voltage Battery - GF08.30-P-0001-10GRH
- Hybrid Drive System, Function - GF08.30-P-0001GRH
- Table Of Contents For Function Description - Hybrid Drive System - GF08.30-P-0999GRH
- Start Hybrid Drive System, Function - GF08.30-P-1003GRH
- Deactivation Of Hybrid Drive System, Function - GF08.30-P-1004GRH
- Energy Management For Hybrid Drive System, Function - GF08.30-P-1005GRH
- Hybrid System Energy Flow, Basic Function - GF08.30-P-1006A
- Hybrid System Activation, Basic Function - GF08.30-P-1008A
- Hybrid System Deactivation, Basic Function - GF08.30-P-1009A
- Hybrid System Monitoring, Basic Function - GF08.30-P-1014A
- Driving, Function - GF08.30-P-2002GRH
- Deceleration Mode, Function - GF08.30-P-2004GRH
- Hybrid Drive System Test Conditions, Function - GF08.30-P-2005GRH
- Automatic Engine Stop, Function - GF08.30-P-3001GRH
- Automatic Engine Start, Function - GF08.30-P-3002GRH
- Torque Coordination For A Hybrid Drive System, Function - GF08.30-P-4001GRH
- Monitoring A Hybrid Drive System, Function - GF08.30-P-5001GRH
- Hybrid System, Basic Function - GF08.30-P-9900A
- Overview Of System Components, Hybrid Drive System - GF08.30-P-9999GRH
- Test & Adjustment Values
- Capacities & Specifications
- Torque Specifications
- Forms
- Wiring Diagrams
- Electrical Function Schematic For Coordination Of Torque Requests
- Electrical Function Schematic For Coordination Of Torque Generation
- Electrical Function Schematic For Automatic Engine Start
- Electrical Function Schematic For Automatic Engine Stop
- Electrical Function Schematic For Starting The Hybrid Drive System
- Electrical Function Schematic For Deceleration Mode
- Electrical Function Schematic For Deactivation Of The Hybrid Drive System
- Electrical Function Schematic, Maximum Performance And Torque Prognosis
- Electrical Function Schematic For Regenerative Braking
- Electrical Function Schematic For Driving Conditions Of The Hybrid Drive System
- Special Tools
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.