Key Not in Vehicle / Key Fob Battery
Electrical
The key fob is not detected, or the key fob battery is low. You may not be able to start the car or lock/unlock remotely.
Quick answer
You can drive short distances, but get the vehicle serviced soon to avoid further damage.
Key Not in Vehicle / Key Fob Battery on your specific vehicle
Select your make, model, and year for a guide tailored to your car.
Covers Toyota, Honda, Ford, Chevrolet, Nissan, Hyundai, Jeep and popular models 2015–2024.
What does this warning light look like?
The key not in vehicle / key fob battery appears in your instrument cluster or dashboard. It's sometimes described as: key fob, key not detected, key battery, smart key, key reminder.
Commonly searched phrases
People often search for: key not in vehicle • key fob battery low • key not detected light • smart key light on
Common causes
Causes vary by vehicle and driving conditions. A professional diagnostic scan or inspection is the best way to identify the exact cause.
Can I keep driving?
Short distances only. Drive carefully and get serviced soon.
What to do
Ensure the key is inside the vehicle when starting. If the message persists, replace the key fob battery (usually a small coin cell).
Estimated repair cost
$0–$15 (battery) or $100–$400 (new fob)
Exact cost depends on the cause, your vehicle, and labor rates in your area.
Frequently asked questions
- What does the Key Not in Vehicle / Key Fob Battery mean?
- The key fob is not detected, or the key fob battery is low. You may not be able to start the car or lock/unlock remotely.
- Can I drive with the Key Not in Vehicle / Key Fob Battery on?
- Short distances only. Drive carefully and get serviced soon.
- What should I do if I see the Key Not in Vehicle / Key Fob Battery?
- Ensure the key is inside the vehicle when starting. If the message persists, replace the key fob battery (usually a small coin cell).
- How much does it cost to fix the Key Not in Vehicle / Key Fob Battery?
- Repair costs typically range from $0–$15 (battery) or $100–$400 (new fob). The exact cost depends on the cause and your vehicle.
Other Electrical lights
You might also see these dashboard symbols in the same category: