Symptoms
- Pressing remote start button does nothing
- Car briefly starts then shuts off
- Remote start works from close range only
- Indicator lights don't flash to confirm the command
Likely causes
- CommonFob or remote battery lowRemote start needs a strong signal, so a weak battery often breaks this feature before basic lock/unlock.
- CommonSafety conditions not metMost systems refuse to remote start if the hood or trunk is open, the parking brake is off in some configurations, or fuel is very low.
- PossibleRemote start not armed/enabledSome systems require doors locked and the car fully closed up before remote start will work.
- PossibleAftermarket remote start module faultOn cars with an added aftermarket system, a wiring or module issue can stop it from functioning.
What to do
- Make sure all doors, the hood, and the trunk are fully closed and the car is locked before trying again.
- Replace the remote or fob battery, especially if range seems short on other functions too.
- Check the fuel or charge level; many systems block remote start below a certain low-fuel or low-battery threshold.
- Try remote start again from closer to the vehicle to rule out range issues.
- If your car has an app-based remote start, confirm the app shows the car as connected and try restarting the app.
- If it's a factory system, check the owner's manual for specific conditions that block remote start on your model.
- For aftermarket remote start systems, note any error lights on the dash and consider having the installer check it.
Tools and parts
Remote or fob batterySearch: “remote start key fob battery for your car model”
When to call a pro
If conditions are all met and it still fails, have the dealer (factory system) or original installer (aftermarket system) diagnose the module.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.