Brakes and Handling Day 2

Why do ABS modules use redundant microprocessors?

• To compare and validate data

• To process data more quickly

• To handle more data

• To compare and select the best data to use

Select all that apply. The ABS light remains on after its brief self-test during startup. What does it mean?

• There is a fault stored, but ABS will intervene during certain traction events

• The conventional braking system will have reduced functionality

• There is a fault stored, and ABS will not intervene during traction events

• The conventional braking system remains fully operational

Understeer occurs when the vehicle turns abruptly and cannot be corrected even though the driver attempts to turn the vehicle straight again

• True

• False

Oversteer occurs when the front wheels continue to travel in a straight line even though the rear wheels are moving.

• True

• False

Select all that apply. Which are true about progressive steering?

• It has a more powerful electric motor

• It has different sized straight-cut teeth to vary steering travel

• It has fewer teeth to increase steering travel at lesser steering angles

• It has variable teeth on the steering rack

A customer states that the ASR/ESC lamp flashed briefly last week on a curvy road, but there are no faults stored. What is the most likely cause?

• The ABS module is faulty because it didn't store faults

• The ESC module is faulty because it didn't store faults

• There was a traction event and the system operated normally

• There are mismatched tires on the drive axle(s)

A customer states that when using the electro-mechanical parking brake, the light in the switch turns off after about 30 seconds when the ignition is switched off. What is the most likely cause?

• It's normal operation

• It's on terminal 30, so there has to be a short to terminal 31 on the ground side

• It's on terminal 30, so there has to be a short between terminal 75x and power

• It's on terminal 50, so this is normal

Except Touareg, what happens when the electro-mechanical parking brake switch is operated above 7km/h?

• The electro-mechanical parking brake gradually applies to operate as an emergency brake

• Nothing. The electro-mechanical parking brake switch is deactivated above 7km/h

• The electro-mechanical parking brake applies abruptly to operate as an emergency brake

• ESC will intervene and operate as an emergency brake

What happens when an AUTO HOLD precondition is no longer met?

• There are no preconditions

• The electro-mechanical parking brake engages

• The seatbelt warning lamp is illuminated

• The Airbag Control Module (J234) is deactivated

When AUTO HOLD first activates, the vehicle is held in place by the hydraulic brake system.

• True

• False