BMW members Exam Complete Questions
And Answers
SECTION I: CHASSIS (Brakes, DSC, Steering, Suspension, Alignment) – 37%
Q1. The reading on the micrometer shown above is ?
Correct Answer: 6.5mm
Q2. What causes brake pulsation?
Correct Answer: Variation thickness of brake rotor
Rationale: Brake pulsation is caused by Disc Thickness Variation (DTV), where the rotor
thickness varies around its circumference, creating pedal pulsation during braking.
Q3. A wheel bearing can cause a DSC fault. True or False?
Correct Answer: True
Rationale: A faulty wheel bearing can cause excessive play or erratic wheel speed sensor
readings, triggering DSC (Dynamic Stability Control) faults.
Q4. 3 wheel shows 24 miles and 1 is 23, what can be the cause?
Correct Answer: Bad wheel bearing
Rationale: Different wheel speed readings at similar distances often indicate a faulty wheel
bearing causing erratic speed signals.
Q5. A vehicle has an overheated left front rotor during driving. What could be the cause?
Correct Answer: Seized front left caliper piston
Rationale: A seized caliper piston causes constant brake drag, generating excessive heat in the
affected rotor.
Q6. A vehicle with a spongy pedal with leaking fluid slowly sinks to the floor. What could be the
cause?
Correct Answer: Primary seal is bad
Rationale: A failed primary seal in the master cylinder allows fluid to bypass the piston, causing
the pedal to slowly sink to the floor.
Q7. A vehicle comes in with a concern of stiff pedal when pressing rapidly. What could be the
cause?
Correct Answer: Check valve
Rationale: A faulty brake booster check valve can prevent vacuum from reaching the booster,
resulting in a stiff pedal during rapid application.
, Q8. When you press the brake pedal in and it releases the brake booster hard. What could be
the cause?
Correct Answer: Vent port
Rationale: A blocked or restricted vent port in the master cylinder can cause difficult release of
brake pressure.
Q9. A vehicle comes in with a concern of a clunking sound from the rear during braking and
accelerating. What is the most likely cause?
Correct Answer: Thrust Arm
Rationale: Worn rear thrust arms can create clunking noises during acceleration and braking
due to movement in the suspension.
Q10. What is most likely the cause if vehicle is losing brake fluid but there are no visible leaks?
Correct Answer: Secondary seal
Rationale: Brake fluid loss without visible external leakage often indicates a failed secondary
seal in the master cylinder, allowing fluid to bypass into the brake booster.
Q11. Brake pedal pulsation can be caused by rust build-up between hub and rotor. True or
false?
Correct Answer: False
Rationale: Brake pedal pulsation is caused by rotor thickness variation, not rust between hub
and rotor. Rust build-up can cause lateral runout.
Q12. On a DSC equipped vehicle, Technician A says it receives inputs from the steering angle
sensor. Technician B says it receives inputs from the brake switch. Who is correct?
Correct Answer: Both
Rationale: DSC systems require multiple inputs including steering angle from the steering angle
sensor and brake status from the brake switch.
Q13. DSC equipped vehicles deactivate traction when it's cold outside. True or false?
Correct Answer: False
Rationale: DSC does not deactivate traction based solely on cold outside temperature.
Q14. DCS equipped vehicles use a system to choke or drop the RPM in the engine. True or
false?
Correct Answer: True
Rationale: DSC/DCS can intervene by reducing engine RPM (throttle reduction) to regain
vehicle stability during loss of traction events.
Q15. A diagram shows 50 on one end and 110 on the other with different alignment angles.
What would it cause?
Correct Answer: Pulling to the left
And Answers
SECTION I: CHASSIS (Brakes, DSC, Steering, Suspension, Alignment) – 37%
Q1. The reading on the micrometer shown above is ?
Correct Answer: 6.5mm
Q2. What causes brake pulsation?
Correct Answer: Variation thickness of brake rotor
Rationale: Brake pulsation is caused by Disc Thickness Variation (DTV), where the rotor
thickness varies around its circumference, creating pedal pulsation during braking.
Q3. A wheel bearing can cause a DSC fault. True or False?
Correct Answer: True
Rationale: A faulty wheel bearing can cause excessive play or erratic wheel speed sensor
readings, triggering DSC (Dynamic Stability Control) faults.
Q4. 3 wheel shows 24 miles and 1 is 23, what can be the cause?
Correct Answer: Bad wheel bearing
Rationale: Different wheel speed readings at similar distances often indicate a faulty wheel
bearing causing erratic speed signals.
Q5. A vehicle has an overheated left front rotor during driving. What could be the cause?
Correct Answer: Seized front left caliper piston
Rationale: A seized caliper piston causes constant brake drag, generating excessive heat in the
affected rotor.
Q6. A vehicle with a spongy pedal with leaking fluid slowly sinks to the floor. What could be the
cause?
Correct Answer: Primary seal is bad
Rationale: A failed primary seal in the master cylinder allows fluid to bypass the piston, causing
the pedal to slowly sink to the floor.
Q7. A vehicle comes in with a concern of stiff pedal when pressing rapidly. What could be the
cause?
Correct Answer: Check valve
Rationale: A faulty brake booster check valve can prevent vacuum from reaching the booster,
resulting in a stiff pedal during rapid application.
, Q8. When you press the brake pedal in and it releases the brake booster hard. What could be
the cause?
Correct Answer: Vent port
Rationale: A blocked or restricted vent port in the master cylinder can cause difficult release of
brake pressure.
Q9. A vehicle comes in with a concern of a clunking sound from the rear during braking and
accelerating. What is the most likely cause?
Correct Answer: Thrust Arm
Rationale: Worn rear thrust arms can create clunking noises during acceleration and braking
due to movement in the suspension.
Q10. What is most likely the cause if vehicle is losing brake fluid but there are no visible leaks?
Correct Answer: Secondary seal
Rationale: Brake fluid loss without visible external leakage often indicates a failed secondary
seal in the master cylinder, allowing fluid to bypass into the brake booster.
Q11. Brake pedal pulsation can be caused by rust build-up between hub and rotor. True or
false?
Correct Answer: False
Rationale: Brake pedal pulsation is caused by rotor thickness variation, not rust between hub
and rotor. Rust build-up can cause lateral runout.
Q12. On a DSC equipped vehicle, Technician A says it receives inputs from the steering angle
sensor. Technician B says it receives inputs from the brake switch. Who is correct?
Correct Answer: Both
Rationale: DSC systems require multiple inputs including steering angle from the steering angle
sensor and brake status from the brake switch.
Q13. DSC equipped vehicles deactivate traction when it's cold outside. True or false?
Correct Answer: False
Rationale: DSC does not deactivate traction based solely on cold outside temperature.
Q14. DCS equipped vehicles use a system to choke or drop the RPM in the engine. True or
false?
Correct Answer: True
Rationale: DSC/DCS can intervene by reducing engine RPM (throttle reduction) to regain
vehicle stability during loss of traction events.
Q15. A diagram shows 50 on one end and 110 on the other with different alignment angles.
What would it cause?
Correct Answer: Pulling to the left
