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.
Increase Speed, Basic Function - GF30.30-S-1000A
Model All (Light transporter)
INCREASE speed
The vehicle's speed is increased by increasing the drive torque.
The following activities are started in this case:
- Increase engine torque.
The engine management system implements the "increase engine torque" request.
- Shift down a gear and upshift if necessary (automatic or dual-clutch transmission).
The transmission management system implements the "shift down gear" or "upshift gear" request.
| Function schematics | |||
| Regulate speed, function schematic | Model 420 | PE30.30-S-2501-97VRA | |
| Additional basic functions | |||
| Torque coordination, basic function | Engine all (Light transporter) | GF07.10-S-1060A | |
| Gearshift system, basic function | Transmission 700.800 | GF27.60-S-1002A | |
| Speed control, basic function | Model all (Light transporter) | GF30.30-S-9901A | |
| Speed limit, basic function | Model all (Light transporter) | GF30.30-S-9902A |
Use the Manual With the Right Hardware
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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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