Quick Summary:
- Slide the release catch to remove the emergency metal key.
- Test the driver’s door key barrel before leaving the pick-up bay.
- Check boot access, the keyhole may be hidden behind trim.
- Carry the fob and metal key separately to prevent full lockouts.
Keyless entry is brilliant, right up until the fob battery dies, the car refuses to unlock, and you are standing in a Los Angeles car park wondering where the “real” key is. Most modern keyless fobs used for car hire still include a hidden metal emergency key. The catch is that you often need to know how to remove it, and you should confirm it actually opens the driver’s door and gives you a way into the boot.
This matters for UK visitors in particular because you might be dealing with a different car make than at home, a different style of key barrel, and different lockout processes and fees. A two minute check at pick-up can prevent an expensive callout, a wasted morning, or a stressful scramble at LAX.
If you are collecting near the airport, you may find it helpful to read the local pick-up guidance on car hire Los Angeles LAX, then use the steps below once you have the keys in hand.
What is the hidden metal key, and why is it there?
Even with a push-button start system, manufacturers usually include a small metal “blade” key inside the fob. It is designed for emergencies such as a flat fob battery, a dead vehicle battery, radio interference, or a fob that has been dropped or damaged. In most cars, the metal key’s primary job is to mechanically unlock the driver’s door, letting you access the cabin. From there, you can often start the car by holding the fob against a designated sensor spot, even with a weak battery.
For car hire, the practical point is simple. If the fob stops working and you cannot physically unlock the car, you may end up paying lockout or callout fees, plus time lost. Testing the emergency key at pick-up makes sure you know where it is, how it comes out, and whether the lock barrel is usable.
Where to find the release on a keyless fob
The emergency key is normally held in by a latch. You will not see it immediately because it sits flush inside the plastic fob body. Look for one of these common designs:
Sliding catch on the back or side: There is a small slider that you push or pull while drawing out the metal key. The key usually slides out from the end of the fob.
Press-button release: A small button releases the key blade. Press and hold, then pull the blade out.
Hidden latch under a chrome strip: Some fobs have a decorative piece that doubles as the release area. Feel for a seam and a small movement point.
Flip-out key: Less common now, but some keyless fobs still have a flip-out blade that springs open when you press a button.
If you are unsure, examine the fob slowly and look for icons, arrows, or a tiny ridge where a latch can move. Do not force the casing apart. You should be able to remove the metal key without tools.
How to remove the metal key without breaking anything
Once you find the release, use this safe method:
1) Hold the fob over a flat surface. If the key slips, it will not fall far.
2) Move the release fully. Partial movement can jam the blade.
3) Pull the metal key straight out. Avoid twisting, which can stress the plastic rails.
4) Reinsert it immediately. Push it in until you feel or hear a click, then try removing it again. The point is to confirm you can do it quickly later, perhaps in the dark, or in the rain.
At busy airport locations, staff may be happy to show you the release on your specific make. It is a normal question, and it is easier to ask at the desk than after a lockout.
Should you test it at pick-up? Yes, and here is what to test
Yes, you should test it at pick-up, as long as you do it sensibly and while you are still in a staffed area. You are not “trying to break” anything. You are confirming that the mechanical entry method works and that you understand how to use it.
Focus on three things: driver’s door access, boot access, and starting method if the battery is flat.
Test 1: Driver’s door mechanical unlock
Many modern cars hide the key barrel behind a small plastic cover on the driver’s door handle. This is where UK visitors often get caught out. You can have a metal key but no obvious keyhole.
How to locate the key barrel: Look under the handle for a tiny slot or notch. There may be a seam line on the handle cap. Sometimes the cover is on the passenger side in certain models, but the driver’s door is most common for emergency entry.
How to remove the cover: Use the metal key tip or your fingernail to gently pry at the notch, then slide the cover off. Do not lever aggressively, the cover should release with light pressure at the correct point.
What to check: Insert the metal key fully and turn to unlock, then lock again. Confirm you can do it smoothly. If the key will not insert, will not turn, or the cover will not come off, raise it immediately before you leave the pick-up area. A stiff lock can be the difference between a minor inconvenience and a full lockout later.
If you are comparing providers or locations, Hola’s airport pages can help set expectations on what you might receive. For instance, Budget car rental Los Angeles LAX and Alamo car rental California LAX may have different fleets, and different key designs.
Test 2: Boot access, and the “hidden keyhole” problem
Boot access matters because many lockouts happen at petrol stations and supermarkets. You put luggage in, close the boot, and the car locks itself while the fob is still inside. Whether that can happen depends on the model, but it happens often enough to plan for it.
Some vehicles have a mechanical boot keyhole, but it is commonly hidden:
Behind a badge: The manufacturer emblem flips up to reveal a key slot.
Under a trim plug: A small round cover near the number plate or boot handle pops out.
Inside the boot lid edge: Less obvious, sometimes visible only when the boot is open.
At pick-up, ask where the mechanical boot entry is, or whether there is none. If there is a keyhole, locate it and confirm the metal key turns it. If there is no mechanical boot entry, that is fine, but you should know before you rely on it.
Also check how the boot opens normally. Some cars use an electronic release on the lid, others require the fob nearby, and some have an interior release. Knowing the method reduces the chances of leaving the fob behind.
Test 3: Starting the car with a dead fob battery
Even if the fob battery is weak, many vehicles can still start if you use the backup transponder method. This does not use the metal blade. Instead, the car reads the fob when it is close to a sensor. Common sensor locations include:
Start button itself: Press the fob against the button.
Steering column area: A marked spot on the column or near the wheel.
Centre console slot or pocket: Some cars have a fob recess.
At pick-up, look for dashboard messages about “Key battery low” or “Key not detected”. If you see them, mention it immediately. It is better to swap the fob or vehicle early than to discover a failure mid-trip.
Practical habits to avoid lockout fees in Los Angeles
Lockout policies vary, but you can greatly reduce your risk with a few habits that suit road trips around Los Angeles, beach stops, and hotel parking.
Keep the metal key separate from the fob. If you carry both together and lose the fob, you lose the emergency option as well. A simple approach is to keep the metal key in your wallet or money belt, and the fob in a different pocket or bag.
Never leave the fob in the boot. Treat it like a passport. If you are loading luggage, keep the fob in your hand until the boot is closed, then confirm you can unlock the car again.
Watch for auto-lock behaviour. Some cars lock when you walk away, some lock after a short delay, and some do not. In the first hour, pay attention to beeps and mirror folds, and test locking and unlocking once in a quiet spot.
Ask for a second key if travelling as a couple. Not every rental includes a spare, but if one is available it can reduce stress, especially if you plan day trips with long walking distances from parking.
Save the roadside assistance number. Put it in your phone before you leave the lot. If your mobile signal is patchy, you can still reference it offline.
What to do if the fob battery fails mid-rental
If the fob stops responding, do not panic. Try these steps in order:
1) Use the metal key to enter the car. Remove the key, expose the door key barrel if needed, and unlock the driver’s door.
2) Silence the alarm correctly. Some cars will alarm when opened with the metal key. Often the alarm stops once you start the car using the backup starting method, or once the fob is recognised in the cabin.
3) Use the emergency start procedure. Press the fob against the start button or place it in the sensor slot, then start as normal.
4) Contact the rental provider if warnings persist. A failing fob battery can sometimes be replaced quickly, but it is best handled through the rental channel so you do not create disputes about parts or labour later.
If your trip also includes Orange County, note that pick-up and support setups can differ by airport. See car rental airport Santa Ana SNA for an overview, especially if you are switching locations during your itinerary.
Small checks at pick-up that save big headaches later
Alongside the emergency key tests, take 60 seconds to do these extra checks while you are still parked near staff:
Check the fob buttons respond consistently. Lock and unlock twice. If the range seems very short, the battery may be weak.
Confirm you can open all doors. Some cars unlock only the driver’s door on first press. That is normal, but you should know the pattern.
Identify where the key code and vehicle details are stored. Some providers include a key tag. Keep it separate from the keys so you can reference the vehicle if you need help.
Photograph the fob and any instructions. A quick photo of the fob type and any dashboard key warning can help if you call support later.
If you are weighing different operators at SNA instead, Hola also provides guidance for specific providers such as Hertz car rental Santa Ana SNA. The key design will still vary by vehicle model, but knowing the pick-up flow helps you make time for these checks.
FAQ
Q: Where is the hidden metal key in a keyless hire car fob?
A: It usually slides out of the fob after you move a small latch or press a release button, often on the back or side.
Q: Should I test the emergency key at pick-up in Los Angeles?
A: Yes. Remove the metal key, unlock and lock the driver’s door, and confirm you can refit the key smoothly before leaving the staffed area.
Q: What if I cannot see a keyhole on the driver’s door handle?
A: Many cars hide the key barrel behind a small plastic cap. Look for a notch under the handle, then gently pop the cover off to reveal the lock.
Q: Can the metal key open the boot?
A: Sometimes. Some vehicles have a hidden boot keyhole behind a badge or trim plug, while others have no mechanical boot entry at all.
Q: If the fob battery dies, can I still start the car?
A: Often yes. Many cars can read the fob via a backup sensor when you hold it to the start button or place it in a designated slot.
