If your parking brake won’t hold the car in place, it means the system is not applying enough force to keep the vehicle stationary. This is a serious safety issue, especially when parked on a slope. The parking brake is designed to secure your vehicle when parked and provide backup braking in an emergency. If it fails to hold the car, it should be inspected immediately.

What does it mean if the parking brake won’t hold the car?

This usually indicates that the parking brake is not engaging properly due to worn components, stretched cables, or poor adjustment. In vehicles with electronic parking brakes, actuator or calibration issues may also be the cause.

Common causes of a parking brake that won’t hold

• Stretched, worn, or broken parking brake cables
• Worn rear brake pads or shoes
• Seized or faulty rear brake calipers (disc brakes)
• Improperly adjusted drum brakes
• Faulty electronic parking brake actuator or software issue

Why do you need to fix this problem quickly?

A parking brake that won’t hold increases the risk of your car rolling away when parked, which can cause accidents or property damage. It also means you don’t have a functioning emergency brake if the main system fails.

How do you know when to get it checked?

You should book an inspection if:

• The car rolls even when the parking brake is fully applied
• The lever or pedal feels loose and travels too far
• You hear unusual noises when applying the brake
• The parking brake warning light stays on or flashes
• The brake feels weak or ineffective compared to normal

What happens during an assessment?

A mechanic will:

1. Inspect the parking brake lever, pedal, or electronic actuator
2. Check and test the parking brake cables for wear or stretch
3. Inspect the rear brakes (pads, shoes, calipers, or drums)
4. Adjust the parking brake tension or drum brakes if necessary
5. Repair or replace faulty components to restore full holding power

How much does it cost to fix?

Parking brake adjustments may cost $100–$200. Cable replacement typically costs $250–$600. If rear brakes or electronic actuators are faulty, costs can range from $400–$1,200+.

Is it unsafe to drive with a parking brake that won’t hold?

Yes. If the parking brake cannot hold your car, it creates a serious risk of rollaway accidents and leaves you without an emergency braking backup. The problem should be repaired immediately.