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What is Honda keyless entry?

The Honda keyless entry system lets you lock, unlock, and start your Honda without inserting a physical key, using a smart key fob or compatible smartphone in some models.


Across most Honda vehicles this feature is part of the Smart Key System with Passive Entry, which detects the fob as you approach and enables hands-free access and a push-button engine start. Depending on the model and trim, you may also have remote start or smartphone-based digital keys in certain markets.


How Honda keyless entry works


Keyless entry relies on radio signals and security codes to verify you have an authorized fob inside a defined range of the vehicle. When authenticated, the car grants access and allows starting without a traditional key.


Key components



  • Key fob or digital key on a smartphone

  • Door handles with proximity or touch sensors

  • Vehicle control module that authenticates the fob

  • Engine Start/Stop button or ignition switch


The system uses encrypted codes and rolling codes to prevent signal copying, and most models include a physical emergency key blade as a backup if the fob battery fails or the system malfunctions.


Key features you’ll find in Honda models


Many Honda models offer a core set of features designed for convenience and security. Availability can vary by year, trim, and market.



  • Passive Entry (proximity unlocking): doors unlock when you touch the handle or press a sensor while the fob is in range

  • Push-button start: the engine starts when the fob is inside the car and you press the Start/Stop button

  • Remote engine start: start the engine from outside the vehicle on many trims

  • Remote locking/unlocking and, in some markets, app-based control


These features are intended to streamline access and operation while maintaining security through encryption and distance sensing.


How to use Honda keyless entry


Here are the typical steps, though exact instructions can vary by model and market; consult your owner’s manual for specifics.



  1. Carry the key fob or have a smartphone with a digital key, ensuring the device is within range.

  2. Approach the car; Passive Entry may unlock the doors automatically or when you touch the door handle sensor, depending on the model.

  3. Enter, apply the brake, and press the Start/Stop button to start the engine if the fob is detected inside the vehicle.

  4. Lock up after exiting: walk away with the fob to trigger automatic locking on models with Walkaway Auto Lock, or use the fob/app or door-handle sensor to lock.

  5. Remote start or digital key via the app: if available, use the fob or app to start the engine from outside, following safety guidelines (do not operate in enclosed spaces).


Always ensure doors are fully closed and the fob or digital key remains within the allowed range to avoid accidental unlocks or starts.


Safety, security, and maintenance


Keyless entry systems run on fob batteries; replace them when range or responsiveness declines. If the fob battery dies, use the built-in emergency key blade or follow the manufacturer’s procedure to unlock and start the car. Be mindful of potential signal interference and keep the fob away from devices that could disrupt communication.


Security concerns, such as relay attacks, are mitigated by Honda’s use of encrypted communication and rolling codes. If you notice unusual behavior or reduced range, contact a dealer for a check or fob replacement.


Smartphone integration and digital keys


In certain markets and on newer trims, Honda offers digital key functionality via the Honda app, allowing unlocking, remote start, and other features from a smartphone. Availability varies by country, model year, and app support, so verify compatibility with your vehicle and region.


Summary


Honda keyless entry provides convenient, key-free access and engine starting through the Smart Key System with Passive Entry, with additional options such as remote start and smartphone-based digital keys on select models. It combines ease of use with security features like encrypted signals and backup keys, though users should stay mindful of fob maintenance and model-specific instructions.

How does Honda keyless entry work?


The handle of each front door has a sensor. That sensor works with the remote so you can automatically unlock/lock the door(s). If you do not open any of the doors within 30 seconds, they will automatically relock. The unlock sensors do not operate when: The remote is not within the operating range.
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What is the purpose of a keyless entry?


Keyless entry is intended to enable a driver to lock and unlock their car without a key. Keyless entry to a vehicle is usually attained by sending a radio frequency signal from a remote transmitter to the receiver in the car. According to Compustar, the signal is sent as encrypted data from the keychain to your car.



What are the disadvantages of keyless entry cars?


Disadvantages of keyless entry cars include increased risk of theft due to relay attacks, high replacement costs for lost or damaged key fobs, potential for leaving the car running, and the risk of carbon monoxide poisoning. Additionally, some systems can be vulnerable to hacking, can malfunction due to power failure, and require complex repairs that can be expensive. 
Security and theft

  • Vulnerability to relay attacks: Thieves can use technology to capture and amplify the signal from your key fob, even when it's inside your home, allowing them to unlock and steal the car. 
  • Hacking: The electronic signals are susceptible to being copied or intercepted by sophisticated thieves. 
  • Costly replacements: A lost or broken key fob is expensive to replace, sometimes costing several hundred dollars. 

Safety and convenience
  • Risk of leaving car running: Drivers may forget to turn off the engine with the push-button start, leading to the risk of fatal carbon monoxide poisoning if the car is parked in a garage. 
  • Battery failure: If your fob battery dies, you may be unable to start or even access the car unless you know how to use the hidden physical key inside most fobs. 
  • Malfunctions: Power failures or other electronic issues can cause the system to malfunction. 

Cost and repair
  • Expensive to repair: Due to a lack of standardization across manufacturers, repairing these systems can be difficult and costly. 
  • Installation cost: Adding a keyless entry system to a vehicle is an additional expense if it's not factory-installed. 



Is keyless entry the same as Remote Start?


No, keyless entry and remote start are not the same, though they both use a key fob. Keyless entry allows you to lock and unlock your car without a physical key, while remote start uses the key fob to start the engine from a distance to pre-heat or cool the cabin. Remote start is often an additional feature of modern cars that also have keyless entry. 
You can watch this video to learn how to use both keyless entry and remote start features: 1mChevroletYouTube · Mar 18, 2022
Keyless entry

  • What it is: A system that uses a key fob to lock and unlock your car doors and trunk without using a physical key.
  • How it works: You press a button on the fob, or in some modern systems ("passive keyless entry"), the car unlocks automatically when you approach it with the fob in your pocket.
  • Example: Pressing a button on your key fob to unlock the car when you get out of a taxi. 

Remote start
  • What it is: A feature that allows you to start your car's engine from a distance using the key fob. 
  • How it works: You press a specific button on your key fob to start the engine, which runs for a set period of time before shutting off. 
  • Example: Starting your car from inside your house so it's warm before you leave for work. 

Key differences
  • Function: Keyless entry is about accessing the vehicle, while remote start is about starting the engine. 
  • Proximity: Keyless entry can be a "passive" system that works by proximity, while remote start requires you to be a certain distance away from the vehicle to activate it from the fob. 
  • Safety: Cars with remote start will shut off the engine if someone tries to open the door without the key fob being inside the vehicle, to prevent the car from being driven away by someone else. 


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.