Underbody Spoiler, Basic Function - GF88.30-P-1010A

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Model All (CAR)

Overview

This document contains information on:

General
Function requirements
Function
- Function sequence for manual adjustment
- Visual feedback signal

General

The actively variable aerodynamics profile is located on the underbody of the front section and, together with the rear wing, optimizes the aerodynamics of the vehicle. The air is directed around the vehicle, leading to a reduction in pressure under the vehicle. As a result, road adhesion is significantly improved.

Depending on the drive program selected and the speed being traveled, the actively variable aerodynamics profile extends and retracts automatically.

Function requirements

Terminal 15 ON
For manual adjustment: Transmission in park position

Function

Provided that the vehicle is traveling within a predefined vehicle speed range, the underbody spoiler is extended and retracted automatically by the AMG gateway control unit. This vehicle speed range varies depending on the drive program.

Function sequence for manual adjustment

When the vehicle is at a standstill and the transmission is in the park position, the underbody spoiler can be extended or retracted using the underbody spoiler button on the steering wheel or via the multimedia system. By pressing the button, the actively variable aerodynamics profile extends or retracts completely. If the button is pressed again during retraction, the spoiler is directly extended again and vice versa. An underbody spoiler extended during vehicle standstill automatically retracts when the vehicle drives off.

Visual feedback signal

The visual feedback is provided via the steering wheel control elements and the instrument cluster. The following messages can be displayed here:

During manual retraction of the rear spoiler: "Spoiler retracting manually" (appears in combination with a pictogram of the spoiler)
Blue: Aerodynamics profile retracted
Red: Aerodynamics profile extended in different positions
Gray: Aerodynamics profile extending or retracting

A mechanical blockage is detected by the underbody spoiler motor unit current sensor. In the event of a malfunction, the actuation for this ignition cycle is canceled. A corresponding fault message appears and a fault code is stored in the fault memory.