Can you add keypad entry to a car?

Yes—it's possible to add keypad entry to a car, either through a factory-built keypad option on some models or via aftermarket keypad systems.

Overview of keypad entry options

Here is a look at the main paths to add keypad entry, including factory options and aftermarket solutions, plus what to consider before you install.

• Factory keypad entry on select models: Some makes offer an exterior numeric keypad that unlocks doors when you enter the correct code. Availability is model- and year-specific, and retrofitting a factory keypad into a car that didn’t originally have one is typically not offered by dealers.


• Aftermarket keypad entry systems: Third-party kits provide a keypad and wiring to the vehicle’s central locking or alarm system. They can unlock doors by code and may pair with remote start or other security features, but installation should be performed by a qualified technician and it may affect warranty or insurance.


• Smartphone-based or digital key options: In some cases, digital key solutions or companion apps offer code-like access or PIN input capabilities, which can replace or supplement a physical keypad in certain setups.

Factory options offer a clean, integrated solution when available, while aftermarket systems provide broader compatibility but require careful installation and ongoing maintenance.

Factory keypad entry

Understanding the built-in keypad option helps determine if this path fits your vehicle and needs.

• Pros: Integrated with the vehicle’s security and locking system; generally supported by the manufacturer; no need for an external device mounted to the vehicle exterior.


• Cons: Availability is limited to certain makes/models and trim levels; retrofitting is usually not possible; may require purchasing a different vehicle if you want the feature from the factory.


• Considerations: Check your owner’s manual or contact a dealer to confirm whether a keypad exists for your exact model and year and whether factory support remains if you install later.

For owners whose cars already include a keypad, usage tends to be straightforward, with codes that can be changed at the dealership or in some cases by the owner if the system supports it.

Aftermarket keypad entry systems

When a factory keypad isn’t available, aftermarket options are the practical route for adding keypad entry.

• What they do: A keypad module wired into the vehicle’s locking system (and sometimes the alarm or immobilizer system) allows door locking/unlocking via a code. Some setups also offer remote start integration.


• Installation notes: Wiring must be precise to avoid conflicts with the car’s security features. A professional installer is recommended to ensure proper integration and to minimize risk of damage or false alarms.


• Costs and maintenance: Part costs typically range from modest to moderate, with installation fees depending on vehicle complexity. Ongoing maintenance may include code management and occasional reprogramming after software updates or battery changes.

Choosing a reputable installer and a trusted keypad brand helps ensure reliable operation and preserves the vehicle’s electrical integrity and security.

Security and warranty considerations

Key security and warranty factors deserve careful attention when adding keypad entry.

• Security risks: A keypad code can be observed or guessed, so use long, non-sequential codes and change them if you suspect compromise. Consider concealment and limit code exposure.


• Warranty impact: Aftermarket keypad installations can affect factory warranty terms. Always check with the vehicle manufacturer and your insurer before proceeding.


• Legal and insurance: Ensure the modification complies with local laws and that your insurance policy reflects the change to avoid coverage issues in a claim.

Work with a reputable shop that can explain how the system interacts with your car’s immobilizer, airbags, and other safety features to avoid unintended lockouts or security gaps.

Costs and timelines

Understanding typical costs and how long installation takes helps you plan effectively.

• Factory keypad retrofit: If available as a dealer-installed option, expect pricing to reflect model availability and may require purchasing a higher-trim vehicle; installation is usually straightforward for dealers but not always offered as a retrofit.


• Aftermarket keypad systems: Parts typically run from a low to mid range, with installation often taking several hours depending on vehicle complexity and whether the system includes remote start or other features.


• Ongoing considerations: Expect potential downtime for installation, possible impact on warranty, and the need for periodic reprogramming or code updates for security.

Discuss with the installer which features you want (code length, user codes, remote start compatibility) and get a written estimate that includes parts, labor, and any follow-up costs.

Summary

In short, adding keypad entry to a car is feasible through either OEM keypad options on certain models or via aftermarket keypad systems. The right choice depends on your vehicle’s make and model, your security needs, budget, and willingness to work with a professional installer. Always verify warranty implications, potential insurance effects, and the security best practices to keep your vehicle safe while enjoying the convenience of keypad access.

Can you add keyless entry to a car without power locks?

A: With the Geek Squad-Keyless Entry Installation, a keyless entry system can be added to a vehicle with manual locks but additional parts are necessary.

Can keyless entry be added to a car?

Yes, you can add keyless entry to a car, either with a DIY kit or through professional installation. The process requires the car to have power door locks, or you'll need to install power lock actuators first. Kits are available that range in price and features, from simple remote lock/unlock to more advanced systems that can be controlled via a smartphone.
 
This video demonstrates the installation process of a keyless entry system: 1mBuildy BunchYouTube · Jul 14, 2024
What you need to know

• Existing power locks: The car must have a central-locking system for an easy install. If it doesn't, you will need to install power door lock motors or actuators first. 
• DIY vs. professional installation:
  • DIY: You can purchase kits online for around $100-$400 and install them yourself with the right tools and instructions. 
  • Professional: You can have a professional installer add the system, which can be a good option if you are not comfortable with car electronics. 
• Types of systems:
  • Basic: A simple kit with a key fob for remote locking and unlocking. 
  • Advanced: Some systems offer more features, such as smartphone control, automatic locking/unlocking, and trunk release. 
• Cost: The price varies depending on the system's features and whether you do it yourself or pay for professional installation. 
• What to consider: When planning the installation, take your time to ensure a tidy and reliable job. 

This video explains what to expect when installing a keyless entry system: 59sAussie ArvosYouTube · Apr 16, 2022

Can I add a keyless start to my car?

Yes, you can add keyless start to a car by installing an aftermarket push-button ignition system, but it can be a complex process that often requires professional installation. The kits include a start button, a module, and wiring, and may also add features like passive keyless entry. While it's possible to add a system to most cars, compatibility varies by make and model, and modern vehicles with anti-theft systems may require additional programming or an immobilizer bypass.
 
This video explains how to install a remote car starter: 58sDaniel EnglingYouTube · Dec 31, 2020
What's involved

• Kits: Keyless start kits typically include a push-button start switch, a control module, a wiring harness, and a new key fob or antenna. 
• Installation: The process involves wiring the system into your car's existing ignition, door lock, and other electrical controls. This is often complicated and requires careful attention to detail to avoid damaging the vehicle's electronics. 
• Programming: After installation, the system needs to be programmed to your specific car. For newer vehicles, this may require a special scan tool and a security pin, which you can sometimes obtain from a dealership. 
• Immobilizer bypass: Cars with built-in anti-theft systems may need an immobilizer bypass module installed so the car can be started with the new system. 

Factors to consider

• Complexity: The installation difficulty varies significantly depending on your car's make, model, and year. Older cars are often simpler to convert than newer ones. 
• Professional vs. DIY: Due to the complexity of the wiring and potential need for programming, professional installation is recommended for most people. 
• Cost: The cost of the kit and professional installation can vary widely. You can find basic kits for a few hundred dollars, but more advanced systems with additional features will cost more. 

You can watch this video to learn how to install a push-button ignition on a muscle car: 58sGoat Rope GarageYouTube · Oct 16, 2020

Can I add a key fob to my car that didn't come with one?

Yes, you can add a key fob to a car that doesn't have one, but it requires installing a central locking system first, then programming the fob to the vehicle. You can purchase an aftermarket fob online and have it programmed by an automotive locksmith or a dealership, which is often the most reliable method. 
Before you begin

• Check your car's compatibility: Ensure any aftermarket system or fob you buy is compatible with your car's make, model, and year. 
• Consider a professional: Adding a key fob is often easiest with the help of a professional, especially for modern cars with complex security systems. 

Step 1: Install a central locking system 

• A key fob needs a physical system to lock and unlock doors, so you will need to install a compatible central locking system in your car before you can add a fob. 

Step 2: Obtain a key fob and program it 

• Buy the fob: You can buy an aftermarket key fob online, but be sure to choose one that is compatible with your car. 
• Program the fob: This step requires professional help, as it involves pairing the new fob with your car's computer system. 
  • For modern cars: You will likely need to take the car to a dealership or locksmith with the right diagnostic tools to program the fob. 
  • For older cars: Some older vehicles might allow for a simpler DIY programming process. Check your car's manual or online forums for specific instructions for your make and model. 
• Program the physical key: If your new fob includes a separate physical key, you will need to have this new key cut to match your car's door and ignition locks.