Remote Start Not Working? Here’s How to Troubleshoot It
- by Joe Weber - updated on 6/25/2025
If your remote start isn't working, you're not alone. It's a common issue that can be caused by a variety of factors, including user error, battery issues, and system malfunctions. Whether your remote starter is completely unresponsive or it's failing intermittently, we'll walk you through the most common causes and how to fix them.
At Batteries Plus, we help customers stay powered up year-round, including diagnosing and replacing weak car batteries, key fob batteries, and more. Let's dive into troubleshooting your remote start system and get it working again.
Why Isn't My Remote Start Working?
There are several potential reasons your remote start may not be functioning properly. Let's explore the most common ones:
1. Key Fob Battery is Weak or Dead
If your remote start fob isn't working, the key fob battery could be to blame, and it is the quickest and easiest solution. These small coin-cell batteries lose charge over time and need periodic replacement.
Fix: Visit a Batteries Plus near you for a key fob battery replacement. Many locations also offer key fob programming and cutting services.
2. The Check Engine Light is On
Many remote start systems are designed not to work when the check engine light is on. This is a safety feature to prevent further damage to the engine.
Fix: You'll need to get your vehicle diagnosed by a mechanic to determine the underlying issue.
3. The Vehicle is Not in 'Park'
Your remote starter won't function if your car is in gear. It must be securely in Park for the system to function.
Fix: Double-check that the gear selector is in Park.
4. The Hood, Trunk, or Door is Open
Remote start systems typically require all doors, the trunk, and the hood to be completely shut. If any are ajar, the system won't activate.
Fix: Inspect and close all doors, the hood, and the trunk securely.
5. Your Car Battery is Low or Dead
Your remote start system relies on your car battery. If your battery is low or dead, the system won't function. A weak battery may even allow your car to start with the key but not with the remote.
Fix: Stop by your nearest Batteries Plus for a free car battery test. If needed, we can install a replacement on the spot.
6. Too Many Failed Attempts
Most remote start systems will temporarily disable themselves after several failed start attempts to prevent misuse or theft.
Fix: Wait a few minutes or consult your owner's manual for reset instructions.
7. Engine Coolant or Oil Pressure is Too Low
Some systems won't allow the vehicle to start if the engine's vital fluids are too low, as a protection measure.
Fix: Check and top off your engine oil and coolant levels.
Get Your Remote Start System Back on Track
Before you assume your remote starter is broken, check these basics first. If your car battery or key fob battery needs attention, Batteries Plus can help. Our stores carry a wide range of automotive batteries, offer free battery testing, and provide fast, expert key fob services.
Need a New Key Fob or Shell? We've Got You Covered
If your remote start isn't working, the issue might be with your key fob or its battery. At Batteries Plus, we offer a full range of key fob services to get you back on the road fast. Whether your fob is unresponsive, damaged, or just has a dead battery, we can help.
Our key services include:
- Key fob replacement – Get a new fob for your car or truck, programmed on-site at select locations.
- Key cutting – Need a spare or lost your original? We cut keys for most vehicle makes and models.
- Key fob shell replacement – If your remote still works but the case is cracked or worn, we can replace the shell to make it like new.
- Unlimited key fob battery replacement – Pay once and get free battery replacements for the life of your vehicle ownership.
We make it easy to fix or replace your fob without a trip to the dealership. Learn more about our vehicle key services.
Don't Let a Dead Car Remote Leave You Stranded
Visit your local Batteries Plus to get your key fob battery replaced, your car battery tested, or your remote start issues diagnosed. We should be your first stop for replacement car and truck batteries, with top-quality options for nearly every make and model.
At Batteries Plus, we're the experts in charge, ready to help you power through any remote start problem with confidence.
FAQ: Remote Start Troubleshooting
Q: Why does my remote start turn on and then shut off?
A: This often indicates that the car detected a fault, such as a door being open or a sensor error. It may also shut off automatically if your remote is programmed to run for only a few minutes. Most remote start systems are programmed to run for 10-20 minutes.
Q: How do I reset my remote start system?
A: The process varies by manufacturer. It generally involves turning the ignition on and off a set number of times or using a reset button. Check your vehicle's manual for specific instructions.
Q: Can a weak battery affect the remote start?
A: Absolutely. A weak or failing battery is one of the most common causes of remote start failure. Visit Batteries Plus for a free test and replacement options.
Q: Will the remote start work if my check engine light is on?
A: In most cases, no. A remote start system will disable itself if the check engine light is on for safety reasons.
Q: Where can I get my key fob battery replaced?
A: Batteries Plus offers key fob battery replacement and programming at many locations. Stop by your nearest store for fast service.