2. Vehicles with automatic transmission and xDrive:

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 BMW 328xi, 2012 BMW 328i, 2011 BMW 328xi, 2011 BMW 328i, and 2010 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT:

Before driving onto the dynamic brake or power analyzer), switch off the Hill Descent Control (HDC) and keep it switched off while testing the brakes.

The HDC indicator lamp must not light up!

It is possible for the HDC indicator lamp to go out or not to light up even when HDC operation is activated. This may be because HDC is temporarily unavailable due to high brake temperature.

Carry out brake testing with selector lever in N position (Neutral) only.

Do not accelerate when the rollers start up.

During roller operation pressing the accelerator pedal in selector lever position N (Neutral) has no damaging effect.

Selecting a gear causes the transfer case clutch to close when the analyzer rollers start up. Consequently the stationary axle is also driven, and the vehicle surges from the analyzer. Because the front and rear axles are now coupled, the axle to be tested then increases the brake force until the analyzer is shut down.