If your key fob battery is dead, you can still start your 2018 Honda CR‑V using the built‑in backup start method. The CR‑V’s push‑button start is designed to work even when the fob can’t transmit a signal, by using proximity or a dedicated contact point for the fob. This guide outlines the quickest way to get moving and what to do next.
Backup start method when the key fob battery is dead
When the fob won’t transmit, you’ll use a proximity/backup start procedure. You’ll need to be seated in the driver’s seat with your foot on the brake, and you’ll engage the start button with the fob held close to it.
Before you begin, know that this method is intended as a temporary workaround to start the engine. If it doesn’t work, you’ll want to replace the fob battery or seek roadside assistance.
- Sit in the driver’s seat and apply the brake firmly with your foot on it.
- With the fob in your possession, place it against the ENGINE START/STOP button. In many CR‑V setups, you should either touch the button with the fob or press the button while the fob is in contact with it.
- While continuing to depress the brake, press the ENGINE START/STOP button to start the engine. The car should start even if the fob’s battery is dead.
- If the engine does not start on the first attempt, try again with the fob stayed in contact with the button and the brake applied. If it still fails, replace the fob battery and attempt again, or contact roadside assistance.
This backup method works because the vehicle’s system recognizes the presence of the fob when it is placed against the start button, even if the fob’s own battery can’t power the signal.
What to do after you’ve started
Once you’ve managed to start the engine using the backup method, you should replace the fob battery as soon as possible to restore normal wireless operation. Plan for a battery replacement at home, at a dealership, or at an automotive store.
Before moving to the next steps, here are practical actions to consider right away.
- Replace the key fob battery with the correct type (often CR2032) to restore full functionality of the smart entry system.
- If you can’t locate or access the fob battery, or if the backup method fails repeatedly, contact Honda Roadside Assistance or your local dealer for help.
- Keep a spare fob battery or a spare fob in a known safe place in case of future outages.
With the backup-start method and a planned battery replacement, you can minimize disruption from a dead key fob and get back on the road quickly.
Additional considerations and tips
These tips can help you avoid future lockouts or delays due to a dead fob battery, and provide options if you’re stranded away from home.
- Carry spare batteries and know the correct type for your CR‑V’s fob. Replacing the battery is often quick and inexpensive.
- If you can’t start the car with the backup method, try to access a dealership or roadside service for a temporary solution and battery replacement.
- Be aware that the mechanical key (hidden inside the fob) is usually for door access, not ignition. Do not rely on it to start the engine unless your owner’s manual specifies otherwise.
- Consider enrolling in roadside assistance or a vehicle‑specific plan that covers key fob battery replacements and jumpstarts.
Summary
In short, a dead key fob does not necessarily prevent starting a 2018 Honda CR‑V. Use the backup start method by placing the fob against the ENGINE START/STOP button and pressing the brake, then starting the engine. If the backup method doesn’t work, replace the fob battery and seek assistance if needed. Regular maintenance of the fob battery and keeping a spare can prevent future disruptions.
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