What is an electronic handbrake and how does it work?

Electronic handbrakes are now common in modern cars, replacing the traditional lever. This guide explains what they are, how they work, and how they compare to manual handbrakes.

An electronic handbrake is far more user-friendly than a conventional handbrake, as all you have to do is press a button rather than pulling or releasing a lever. But how do electronic handbrakes work in practice?

This handy guide explains the tech, looks at cars with electronic handbrake systems, and explores the key differences in the electronic vs manual handbrake debate.

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What is an electronic handbrake?

An electronic handbrake, also known as an electronic parking brake (EPB), is a button-operated system that replaces the traditional manual handbrake lever. Instead of pulling a lever, you simply press a button to engage the handbrake. It offers improved convenience and often includes added safety features such as hill-start assist.

How does an electronic handbrake work?

The traditional handbrake lever works by pulling a cable that applies the rear brake pads or shoes onto the discs or drums, holding the car in place. The same basic principle is used across most manual systems: the rear wheels are locked so the vehicle cannot move.

An electronic handbrake works in a similar way but uses electric motors instead of a cable. When you press a button to activate it, these motors apply the brake pads to the rear wheels, holding the car securely in position.

In most modern cars, the system will also release automatically when you drive off, removing the need to manually lower a lever.

How to use an electronic handbrake

To use an electronic handbrake, simply pull up the switch – usually marked with a “P” – while the car is stationary to engage it. You’ll typically see a dashboard warning light and may hear a brief motor noise as it activates.

To release it, press the foot brake and push the switch down, or in many modern cars, just accelerate while in gear and the system will automatically disengage.

Are electronic handbrakes better than manual handbrakes?

There isn’t a clear winner: electronic and manual handbrakes each have their own advantages, and which is “better” depends on what you value in a car.

Here are the pros and cons of each:

Type	Pros	Cons
Electronic handbrakes	Activated with a button, so they’re easier to use. Save space in the centre console. Often apply automatically when the car is parked and release automatically when you drive off.	More expensive and complex to repair. Can take some getting used to, especially in manual cars. Not suitable for handbrake turns or certain driving techniques.
Manual handbrakes	Simple and usually cheaper to repair. Give more direct control over braking. Familiar and preferred by many drivers.	Take up more space in the cabin. Must be applied and released manually. Can be forgotten if you’re not used to using them.

Electronic handbrakes are generally better for convenience and modern driving, while manual handbrakes are better for simplicity, control, and ease of maintenance. Neither is objectively better overall – it depends on driver preference and how the car is used.

Electronic handbrake problems

Electronic handbrakes can sometimes cause problems because they’re controlled by motors and electronics rather than a simple cable. This makes them more complex than traditional handbrakes.

If something goes wrong, it’s usually not a quick DIY fix and often needs a garage to diagnose and repair.

A common issue is that if your car battery goes flat, the handbrake may stay stuck on, which can stop the car from moving until the battery is recharged or replaced.

Cars with an electronic handbrake

Electronic parking brakes are extremely common in modern cars, to the point where manual handbrakes are now relatively rare.

Some popular models with electronic handbrakes include:

• Audi A3
• BMW 3 Series
• BYD Seal
• Hyundai Tucson
• Jaecoo 7
• Mercedes C-Class
• Nissan Qashqai
• Peugeot 208
• Range Rover Sport
• Volkswagen Golf
• Volvo XC40

You’ll also find almost every electric car on sale uses an electronic handbrake, too.

Electronic handbrake FAQs

How do I hill start with an electronic handbrake?

Make sure the electronic handbrake is engaged if the car is on a slope. Then, press the clutch fully down and select first gear.

Apply light throttle while slowly raising the clutch until you reach the biting point. In many modern cars, the handbrake will release automatically as you pull away, or you may need to release it manually before or during take-off, depending on the system.

How do you tow a car with an electronic handbrake?

You should only tow a car with the electronic handbrake released, but this often requires ignition power or a specific “service/tow mode”. If the system cannot be released due to a flat battery or fault, the vehicle should be transported on a flatbed recovery truck.

Can an electronic handbrake be used at speed?

The electronic handbrake is not designed for normal braking while driving. In most cars, it should not be used at speed, as it can cause sudden braking or instability. However, many systems can act as an emergency backup and apply controlled braking if the main brake system fails, depending on the vehicle.

Can you release an electronic handbrake with no power?

In some vehicles there is a manual or emergency release procedure, but many electronic handbrakes require electrical power to disengage. If the battery is flat, you may need to restore power or follow the manufacturer’s emergency release instructions in the owner’s manual.

Are electronic handbrakes reliable?

Electronic handbrakes are generally reliable and widely used in modern vehicles. However, they are more complex than traditional manual handbrakes and rely on electrical components and motors, so failures can occur, though they are relatively uncommon with proper maintenance.

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