Driving a car with the parking brake engaged is a common mistake, especially among new drivers and those unfamiliar with a particular vehicle. The effects of driving with the parking brake on can range from minimal to severe, depending on how long and how fast the car is driven. Consequently, the extent of wear and tear is influenced by a host of factors.
What Happens When You Drive with the Parking Brake On?
Also called the handbrake or emergency brake, the parking brake is designed to keep the vehicle stationary when parked. It operates independently of the main hydraulic brake system, usually applying force to the rear wheels. Driving a car with the parking brake engaged means forcing the vehicle to move against its braking system.
There are two general scenarios:
- The parking brake is lightly engaged.
- The parking brake is fully engaged.
In both cases, damage occurs; however, the severity increases if the parking brake is fully applied and the vehicle is driven at a high speed.
Consequences of Driving with the Parking Brake On
Is it bad to drive with the parking brake on? The definitive answer is yes. There are several consequences associated with the risks of driving with the parking brake applied.
Brake Pad and Rotor Wear
One of the immediate effects of driving with the parking brake on is accelerated deterioration of brake pads and rotors caused by continuous friction. The friction generated causes them to wear out much faster than during regular use.
Parking Brake Overheating
When the parking brake remains engaged while driving, it can lead to the parking brake overheating. This excessive heat may cause the brake fluid to boil, reducing braking efficiency and potentially leading to total brake failure.
Damage from Driving with Parking Brake On
High-speed driving with the brake on can cause significant mechanical stress, including warping of the brake drums or discs. It can even cause damage to the wheel bearings and axles due to excessive heat and friction.
Car Brake System Damage
The stress on the system can result in broader car brake system damage, such as compromised brake lines, callipers or master cylinders. However, this particularly happens if the driver continues without acknowledging and fixing the issue promptly.
Signs You May Have Left the Parking Brake On
Driving a car with the parking brake on causes damage. It is not something that goes unnoticed. This type of mistake often produces clear warning signs, such as:
- Sluggish acceleration
- Burning smell (due to heated brake components)
- Reduced fuel efficiency
- Pulling sensation from the rear of the vehicle
- Illuminated brake warning light
If you suspect the parking brake was left on while driving, it’s important to stop the car immediately. Next, inspect for any signs of damage or overheating.
How to Avoid Such an Issue
A precautionary approach, along with a few pre-checks, can help avoid the situation. For instance:
- Always double-check that the parking brake is released before driving.
- Make sure all the dashboard warning lights are working properly.
- If your vehicle has a manual handbrake, make a habit of lowering it completely.
- For cars with electronic parking brakes, wait for the disengagement confirmation before accelerating.
- If you experience performance issues after such an incident, have a mechanic inspect the brakes immediately.
FAQs
How long can I drive with the parking brake engaged?
Only a few metres at low speed is tolerable, driving further risks serious brake damage.
Is it safe to drive if the parking brake light is on?
No, it indicates the brake may still be engaged or there’s a system fault. Stop and check immediately.
What should I do if I accidentally drive with the parking brake engaged?
Stop the car safely, release the brake fully and inspect or have a mechanic check for potential damage.
These were some effects of driving with parking brakes on and precautionary measures. Drivers need to be cautious when on the road and take note of every dashboard light and any unusual sound or smell. It is how to ensure a safe driving experience.
Paying heed to safety and comfort, many used and new cars for sale in the UAE come equipped with advanced features. Different types of car sensors and tech-driven systems prioritise safety and effortless mobility.
For more tips on safe driving, stay connected with UAE’s favourite auto blog.
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