ASE G1 Auto Maintenance and Light RepairBrakesMedium
A customer complains that their vehicle pulls sharply to the left when the brakes are applied. Upon inspection, the technician finds that the right front brake caliper is seized. What is the MOST likely reason for the vehicle pulling to the left?
- AThe left rear wheel cylinder is leaking.
- BThe left front caliper is over-applying.
- CThe right front wheel is not braking effectively.
- DThe rear brakes are over-applying.
Show answer & explanationAnswer & explanation
Correct answer: C. The right front wheel is not braking effectively.
If the right front brake caliper is seized, it means that brake is not applying or is not releasing properly. In this case, assuming it's not applying, the left front brake would be doing most of the braking on the front axle, causing the vehicle to pull towards the side that IS braking (the left side).
Why the other options are wrong
- A. A leaking left rear wheel cylinder would reduce braking effectiveness at that wheel, which might cause a pull to the right (if the right rear is still braking), but wouldn't explain a sharp pull to the left from a front brake issue.
- B. While the left caliper might be working normally, it's the *lack* of braking on the right that causes the pull, not an over-application on the left.
- D. Problems with rear brakes typically cause instability or a fishtailing sensation, not a sharp pull to one side during braking.
Brake Pull
A condition where a vehicle veers to one side during braking, typically caused by an imbalance in braking force between the left and right wheels.
- Most often due to a seized caliper, contaminated pad, or air in the line on one side.
- The vehicle pulls towards the side that is braking effectively.
- Requires inspection of all brake components on the affected axle.
Memory trick: Brake pull means an imbalance, like a wonky scale.