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 GLS450FACTORY OEM SERVICE PROCEDURE
Throttle Control, Speed Control Systems - 167 Chassis
- General Information
- Basic Knowledge
- Accelerator Pedal Sensor, Basic Function - GF30.20-P-2000A
- Functional Limitations Of Distance Control, Detailed Information - GF30.30-P-0024-01A
- Increase Speed, Basic Function - GF30.30-P-1000A
- Reduce Speed, Basic Function - GF30.30-P-1001A
- Intelligent Driving Control Unit, Basic Function - GF30.30-P-9890A
- Distance Control Controller Unit, Basic Function - GF30.30-P-9891A
- Active Brake Assist/Collision Warning System Controller Unit, Detailed Information - GF30.30-P-9893-01B
- Collision Warning System Controller Unit, Basic Function - GF30.30-P-9893A
- Speed Adjustment, Basic Function - GF30.30-P-9900A
- Speed Control, Basic Function - GF30.30-P-9901A
- Speed Limit, Basic Function - GF30.30-P-9902A
- Distance Control, Basic Function - GF30.30-P-9903A
- Safety Precautions
- Testing & Repair
- Test & Adjustment Values
- Torque Specifications
- Wiring Diagrams
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.
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