A spare car key is one of those things you hope you’ll never need—but when you do, it needs to work perfectly. Unfortunately, many drivers store their spare key away for years without ever checking it, only to discover it no longer works during an emergency.
Making a habit of testing your spare key every few months is a simple step that could save you from the stress of being locked out or stranded.
If you ever discover your spare key isn’t working properly, a trusted Car locksmith Andover can quickly inspect, repair, or replace it.
📑 Table of Contents
📍 Why Testing Your Spare Key Matters
📍 How Often Should You Test It?
📍 What to Check During a Test
📍 Common Problems You Might Discover
📍 When to Contact a Locksmith
🔑 Why Testing Your Spare Key Matters
Your spare key can develop faults even if it’s rarely used.
🔋 Batteries naturally lose power over time
📡 Remote programming can occasionally become unreliable
💧 Moisture or poor storage can damage electronics
🧱 Plastic casings may crack with age
Testing your spare key regularly gives you confidence that it’ll work when you need it most.
📅 How Often Should You Test It?
You don’t need to test your spare key every week, but making it part of your routine is a smart idea.
🗓️ Test it every three to six months
🔓 Check that it locks and unlocks the doors
🚗 Confirm it starts the engine
📡 Test all remote buttons, including the boot release if fitted
A quick test only takes a minute but could prevent a major inconvenience later.
📊 Spare Key Maintenance Timeline
Recommended Spare Key Checks
Every Month ██
Every 3–6 Months ████████████████████ Ideal
Once Per Year ████████
Never Tested █████████████████████████ Highest Risk
🛠️ What to Check During a Test
A full test involves more than simply unlocking the car.
🔘 Make sure every button responds correctly
📡 Check the remote works from a normal distance
🔑 Ensure the key turns smoothly in the lock
🚘 Confirm the vehicle starts without warning lights or delays
If anything feels unusual, it’s worth having the key inspected before it fails completely.
⚠️ Common Problems You Might Discover
Regular testing helps identify issues before they become emergencies.
🔋 Weak battery reducing operating range
📡 Inconsistent remote locking
🔘 Sticky or worn buttons
🔑 Worn key blade
🧱 Cracked or damaged casing
Catching these problems early is usually faster and less expensive than waiting for total failure.
🚗 When to Contact a Locksmith
If your spare key doesn’t work exactly as it should, don’t put it back in the drawer and hope for the best.
A professional locksmith can help with:
🚐 Mobile key diagnostics
🔑 Spare key cutting
📡 Key programming and synchronisation
🔋 Battery replacement
🛠️ Key repairs and replacement
Having a fully functioning spare key gives you valuable peace of mind.
✅ Final Thoughts
Your spare key is only useful if it actually works. Spending a few minutes testing it every few months can save you from costly lockouts, unexpected delays, and unnecessary stress.
Treat your spare key like any other piece of important safety equipment—check it regularly, keep it in good condition, and you’ll always have a reliable backup when you need it most.
