gf4231p2000t

BAS brake application, function

Type gf · topic 42.31 · version 0101 · 2006-03-20

Applies to: MODEL 211 up to 31.5.06 except CODE (494) USA version except CODE (498) Japan version MODEL 211 up to 30.6.06 with CODE (494) USA version with CODE (498) Japan version

Where it sits

Function group 2 Chassis › 42 Brakes - hydraulic and mechanical systems › 42.31 Brake assist (BAS) — Series 211

GF42.31-P-2000T

BAS brake application, function

23.2.06

MODEL 211 up to 31.5.06
except CODE (494) USA version
except CODE (498) Japan version

MODEL 211 up to 30.6.06
with CODE (494) USA version
with CODE (498) Japan version

Function

The brakes for BAS are applied in exactly the same way as with normal brake application, but with BAS the pressure is increased more quickly according to the speed at which the driver presses the brake pedal.

The ESP control unit (N47-5) recognizes that the preconditions exist for activation of BAS from the speed of the brake pedal and the vehicle speed.

BAS is switched on when the following conditions exist:

The speed is > 10 km/h.

The stop lamp switch (S9/1) is operated.

No current fault is detected.

The system is released after a self-test.

The pedal speed threshold is exceeded.

BAS is switched off when one of the following conditions is present:

The brake pedal pressure is reduced by the driver to such an extent that emergency braking is no longer required.

The stop lamp switch (S9/1) is not operated.

The speed is < 3 km/h.

A fault is detected that causes the multifunction display (A1p13) in the instrument cluster (A1) to be activated.

ESP control unit, location/task/function

GF42.45-P-4500SL

Stop lamp switch. location/task/function

GF42.10-P-4000A

Traction systems hydraulic unit, location/task/design/function

GF42.50-P-4000S

Referenced documents