Losing access to car keys locked in the trunk is a frustrating and surprisingly common problem. Whether it occurred because of a momentary distraction or a malfunctioning key system, it can leave you stranded. Fortunately, there are several practical and effective options you can explore depending on the type of vehicle, the tools available, and the situation.
This article provides a detailed breakdown of what to do if you find yourself locked out of a trunk with keys inside, including alternative access methods, professional help, DIY solutions, and technologies designed to prevent such scenarios. We’ll also cover the most reliable and secure methods to help you retrieve your keys or gain access without compromising safety.
Understanding the Problem: Why Is It Hard to Access a Locked Trunk?
Modern cars come with a variety of security features designed to prevent theft and unauthorized access. While these features are essential, they can create challenges if you accidentally lock your keys in your trunk. Most vehicles use one of the following locking mechanisms:
- Key-operated trunks – These rely on a physical key inserted into the trunk lock.
- Keyless entry systems – These allow you to unlock the trunk via a digital keypad, proximity sensors, or smartphone connectivity.
- Sedan vs. Hatchback vs. SUV trunk styles – The structure of your trunk impacts how you’ll access it if your key is stuck inside.
If your vehicle uses a remote trunk release button on your key fob, it’s likely ineffective if the keys are inside the trunk, as the signal is blocked. Similarly, automatic central locking systems won’t work if the vehicle is powered off and keys are inside.
Determining Your Options Based on Vehicle Type
Before attempting any solution, identify the type of car you drive and its locking system. This will guide your method of access.
Traditional Key Vehicles
Older vehicles that rely solely on a physical key are generally the easiest to recover from if the keys are locked inside the trunk:
- Emergency key access – If a trunk key is still in the vehicle, sometimes you can unlock the trunk by accessing from the glove box or interior lock.
- Interior trunk release – Many cars have a trunk release handle inside the vehicle, usually found at the base of the rear seat.
Remote Keyless Entry Vehicles
Remote keyless entry systems (RKE) use a fob to unlock the car, and sometimes these systems disable the trunk release if the fob is inside the trunk. Here’s what you might consider:
- Check if your vehicle has a physical key hidden in the fob. Some models retain a mechanical key that works in the trunk lock.
- Use a backup key fob. If your second keyfob is outside the trunk, you can unlock the vehicle and remotely open the trunk.
Push-Button Start Vehicles
For vehicles equipped with smart key systems and push-button start:
- Smart key fob signal range – Some vehicles will still respond to the key fob even if it’s inside the trunk when placed near the start button or within the vehicle cabin.
- Key storage location features – Certain newer vehicles have designated signal amplification zones, allowing them to detect the key’s location even if inside.
Immediate Things to Try at the Scene
When your car is locked, and you know the only key is in the car or trunk, the first few minutes are crucial. You may be able to resolve the issue quickly with one of the following:
Attempt to Access the Trunk From the Back Seat
Many sedans and coupes have fold-down rear seats that allow access to the trunk area inside the car. Steps to follow:
- Check if your rear seats fold flat or include a trunk pass-through (most common in cars released after 2000).
- If possible, remove or fold part of the seat to reach inside the trunk.
- Look for a trunk release handle or mechanism (often glowing or labeled) located inside the trunk just above the latch.
If you see one, pull or push it to open the trunk from the inside. This saves you from calling for external help or purchasing expensive alternative methods.
Use a Spare Key or Location-Specific Access
If you have a spare key or hidden location where a family member usually keeps a reserve, this is the fastest solution. Consider the following steps:
- Check under the car – Some people hide keys in magnetic containers under the vehicle. Use a metal detector or strong magnet to locate them.
- Home or office spare – If you typically keep a backup key at home or work, call someone or retrieve it yourself.
You must have another functional key to unlock the trunk or start the car. If the spare is a remote fob, keep in mind that smart systems require that key to be within signal range to open the car or trunk.
Locate and Use a Hidden Mechanical Key
Most key fobs with remote entry include a hidden mechanical key for emergency use. Check your trunk lid or other keyhole locations, usually near the driver’s side door or under a concealed panel.
Important: Refer to your vehicle manual to locate the physical key slot. Once found, deploy the mechanical key hidden in your fob and manually unlock the trunk.
Calling for Help If You Can’t Solve It Alone
If the above methods don’t work, you may need to enlist assistance.
Contact Your Vehicle Manufacturer or Roadside Assistance
Some automotive brands provide embedded roadside support systems with the capability to unlock the vehicle in emergencies. Here’s how:
- General Motors’ OnStar – OnStar operators can sometimes unlock the trunk remotely.
- Toyota Safety Connect or BMW Assist – Some advanced systems allow unlocking via a smartphone app or call center support.
Note that this works only if your car has an integrated connected service. If available, this is often the fastest way to regain access.
Locksmith Assistance: When to Call One and What to Expect
If all else fails, a licensed locksmith can open your trunk without damaging your vehicle.
What to expect:
- Typically 20–30-minute arrival time – If nearby, a mobile locksmith can respond quickly.
- Service costs $50–$150, depending on time and vehicle type – High-end or newer models may require more intricate methods, increasing cost.
- Professional trunk opening without damage – Specialists use tools like wedge kits, slim jims, or keyhole drilling (if needed).
Call an auto locksmith and confirm experience with your vehicle make and model. Avoid unverified services to prevent scams.
Diy Trunk Unlocking Without Damage
If professional help is too expensive, and you prefer a more hands-on solution, certain temporary DIY methods may work, though success depends on your vehicle’s build.
String and Loop Method
This approach works on vehicles where door gaps allow access to the interior trunk release lever.
Steps:
- Use a strong string or fishing line to feed through the gap above the door using a wedge or bent wire hanger.
- Place a small loop at the end of the string that can fit around the trunk release lever (if accessible).
- Once looped, gently pull from the exterior to trigger the release.
Caution: This requires precision and patience. It’s most effective on older car models without advanced anti-locking systems and sealed trunks.
Improvised Tools like a Slim Jim or Wedge
Slim jims are thin metal tools once commonly used before anti-locking features were standard.
If you have (or can borrow) one:
- Slide the slim jim between the weatherstripping at the side window.
- Attempt to catch the door latch rod and unlock the mechanism.
Wedge kits, inflatable airbags, or long, thin rods are designed to open car doors without damaging the keyhole. While less effective on newer or luxury cars, they may help you access the car long enough to reach the trunk release.
Advanced Tech-Based Solutions for Locked Trunk Key
Modern vehicle technology presents increasingly sophisticated options for recovering access.
Key Signal Amplification Techniques
Some newer vehicles lock you out if the smart key is trapped in the trunk. However, they can sometimes detect the key signal if brought closer electrically:
- Ask someone to hold the key fob tightly against the trunk’s back window for hatchbacks or SUVs with rear access hatches.
- In some vehicles, connecting the key fob directly to the vehicle’s start/ignition port (usually near the dashboard) may re-enable trunk access.
This technique takes advantage of a vehicle’s key detection system to temporarily accept the signal.
Signal Relay Apps and Devices
Technological advancements now offer devices that amplify key signals from inside a car.
Products like the Theft Stoppers Remote Key Fob Signal Extender or Thule SmartMatic Remote Access Extender may help you receive a key signal from inside a locked trunk using a Bluetooth-connected relay tool.
This type of solution requires advance installation for optimal use.
What Not to Do When You Find Yourself Locked Out
Avoid taking potentially damaging or unsafe approaches when trying to retrieve your keys.
Avoid Using Improper Tools That Damage Your Vehicle
Never force open the trunk with:
- Hand tools like screwdrivers or crowbars
- Objects inserted randomly into keyholes
- Battering or breaking windows or locks
These actions can damage the body, electronics, or locking mechanism of your vehicle, leading to expensive repairs.
Don’t Ignore the Risk of Scammers
When searching for help online, always confirm that the locksmith or automotive support is licensed and reputable.
Signs to Watch Out For:
- Asking for payment before service begins
- Unreasonably high service fees without prior negotiation
- Refusing to show identification or credentials
When calling for help, use reviews, referrals from official automotive forums, or insurance-approved service providers.
Preventative Strategies for Future Lock-In
The best way to solve this issue is to prevent it from happening in the first place.
Use a Safe Key Location Outside the Trunk
If you regularly need to store a spare key, use:
- Key lockboxes – Consider combination safes mounted to the car frame or installed under the vehicle.
- Smart key safes – Bluetooth or electronic lockboxes you can access remotely.
These are more secure than hiding a key under a magnetic box or in an obvious place.
Consider Key Tracking Devices
Key tracking devices like Tile Mate or Apple Airtag can help you avoid misplacing your keys:
- Attach to your key fob and locate via a mobile app
- Smart alerts when keys leave your vicinity (on supported models)
- Works across Bluetooth or ultra-wideband (UWB) technologies
Ideal for people who frequently leave keys unattended.
Enable Remote Lock and Unlock Through Vehicle Apps
Many modern vehicles include apps for managing locking systems:
Popular vehicle apps include:
| Car Brand | App Name | Function |
|---|---|---|
| BMW | BMW Connected | Remote trunk unlocking, lock status monitoring |
| Ford | FordPass | Remote start, vehicle unlocking, locate keyfob |
| Hyundai | Blue Link | Smart access controls, keyless features |
These apps can unlock your trunk or send alerts if your key is trapped inside.
Summary: Steps to Solve a Locked Trunk Key Issue
If you’re locked out with your keys in the trunk, quickly assess your options:
- Check for a trunk release lever hidden in rear seat or under interior.
- Try accessing with a spare key fob or hidden physical tool.
- Contact vehicle embedded services (e.g., OnStar, Remote App) if applicable.
- Hire a licensed locksmith if remote and DIY options fail.
- Invest in key tracking devices, safeboxes, and app integrations for future prevention.
Each method varies in complexity and cost, so the right course of action depends on your knowledge, timing, and available tools.
Final Tips and Takeaways
Whether you’re dealing with a classic sedan or a fully electric SUV, a keys-locked-in-the-trunk situation doesn’t have to end in panic. With the tips outlined in this article, you’re better equipped to handle this issue with minimal inconvenience.
Remember:
- Don’t damage your vehicle in your attempt to retrieve the key.
- Always have a backup access method available, especially if your car offers integrated tech-based solutions.
- Prevention is better than cure—invest in smart accessories to avoid future mishaps.
By staying calm, methodical, and informed, you can safely retrieve your keys and continue your journey without undue delay or expense.
1. What should I do immediately if I lock my keys in my trunk?
If you realize your keys are locked in your trunk, your first step should be to remain calm and assess your situation. Avoid panicking, as this can lead to poor decisions or unnecessary stress. Check if any of your car doors or the trunk can be accessed with a spare key or an alternative entry method. If you have a second key or someone nearby with access to the vehicle, this may resolve the issue quickly without needing professional help.
If you’re sure your keys are locked in the trunk and you don’t have access to a spare key, make sure the vehicle is secure and consider your options for unlocking it. If you’re in a public or unsafe area, ensure the car is locked and move to a safe location while you seek assistance. Some modern cars offer remote unlocking services through mobile apps or roadside assistance programs, so check whether your vehicle manufacturer or insurance provider offers such features. These steps will help you avoid unnecessary frustration and start the process of retrieving your keys effectively.
2. Can I unlock my trunk without damaging it if my keys are inside?
Yes, in many cases, you can unlock a trunk without causing damage, especially if the vehicle is equipped with keyless entry or a central locking system. If your car supports unlocking via a mobile app or a hidden key slot inside the door handle or bezel, you may be able to access the trunk without any harm to your vehicle. Additionally, if you have a spare key fob or mechanical key, you can use that as intended if it hasn’t been locked away too.
For older or non-keyless entry vehicles, gently attempting to open the trunk using a shoelace or coat hanger through a rear window may work if the window is partially open or removable, though this should be done carefully to prevent damage. If these techniques seem uncertain or risky, it’s best to contact a qualified auto locksmith or roadside assistance provider who can open your trunk professionally and safely without damaging the car.
3. How can a professional locksmith help retrieve my keys from the trunk?
A professional locksmith who specializes in automotive services can provide swift and non-invasive solutions to retrieve your keys from the trunk. These experts have specialized tools like slim jims, air wedges, and lock picks that allow them to gain access to the interior of your vehicle without damaging locks or glass. For vehicles with modern keyless entry systems, they may also use advanced techniques to unlock central locking systems.
In addition to retrieving your keys, locksmiths can offer additional services such as making a replacement key or reprogramming key fobs. Many are mobile and can reach your location quickly, which is particularly helpful if you’re stranded. While there is a cost involved, professional help is usually worth the time, effort, and peace of mind, especially if your vehicle is parked in an inconvenient or unsafe location.
4. Are there smartphone apps or vehicle features that can unlock my car remotely?
Many modern vehicles come equipped with built-in telematics systems or smartphone apps that allow for remote unlocking and trunk access. Systems like OnStar, BMW ConnectedDrive, FordPass, or the Tesla app can remotely unlock your car doors or even open your trunk if your keys are locked inside. These features are typically activated through a subscription or connected car service, so it’s worth checking your vehicle’s manual or the manufacturer’s website to see if you’re eligible.
Some apps can also work in tandem with roadside assistance services, giving you the ability to request help directly through the app while also allowing remote access to your car. These features require a data or cellular connection and a charged battery in your vehicle. If you’re unsure about your car’s features, contacting your car dealership’s service department can clarify your remote access options and help you take full advantage of technology designed to assist with situations like this.
5. What should I do after unlocking the trunk to avoid future incidents?
After successfully retrieving your keys, take steps to prevent this from happening again. One of the best methods is to always keep a spare key in a secure, accessible location, such as with a trusted friend or family member, or using a secure key lockbox installed outside your home. You should also consider keeping the trunk’s contents organized and avoiding placing keys in risky spots where they can be accidentally closed inside.
Another useful strategy is to implement habits like checking your keys before closing the trunk or using alert systems such as Bluetooth trackers that will remind you via your smartphone if your keys are nearby but not in your pocket. Some modern cars have proximity alarm features that beep when you walk away with the key fob inside the car. Developing consistent routines and leveraging technology can significantly reduce the chances of relocking your keys in the future.
6. Can I use roadside assistance to help if I locked my keys in the trunk?
Yes, most major auto insurance providers and vehicle manufacturers offer roadside assistance packages that include lockout coverage. If you have a subscription to services like AAA, OnStar, or your car’s manufacturer assistance program, you can call for help and have a technician come to unlock your vehicle and retrieve your keys. These services are often available 24/7 and can respond quickly depending on your location.
When you contact roadside assistance, they may require verification of your vehicle ownership and identification for security reasons. Once verified, their technician will use specialized tools to access your car or trunk safely. While some plans offer this service for free up to a certain number of times per year, others may charge a small fee. It’s always a good idea to confirm what services you’re entitled to in case of a lockout situation.
7. What tools or methods can I try at home without damaging my car?
If you prefer to try retrieving your keys yourself, there are a few home methods you can attempt without damaging your vehicle. If you have access to a second key, you might try unlocking the car with it and then using the interior trunk release button. Alternatively, if your vehicle has front seats that fold down or a pass-through trunk space, you may be able to access the trunk from inside by crawling through the rear seats.
In some cases, a thin wire or shoelace may be used to loop around the latch and pull it, though this depends heavily on the car model and the latching mechanism’s accessibility. Always approach these methods carefully—doing them incorrectly can lead to interior or mechanical damage. If you’re not confident in your abilities, it’s better to seek professional help rather than risk damaging your vehicle while attempting to retrieve your keys.