How to replace the battery in your Corvette’s remote key?

How to replace the battery in your Corvette’s remote key?

Replacing Your C8 Corvette Remote Key Battery

You walk up to your Corvette, press the unlock button, and nothing happens — or worse, you get inside, press the start button, and the dashboard flashes a warning like “REPLACE BATTERY IN KEY” or “NO KEY FOUND.” It’s frustrating, but it’s also an easy fix. Your Corvette’s remote key runs on a single coin-cell battery, and replacing it is a quick job that can be done in minutes without special tools.

Signs Your Key Fob Battery Is Failing

The C8 Corvette’s remote uses a CR2450 coin-cell battery to send wireless signals for locking, unlocking, and starting the car. Over time, that battery naturally loses power. When it gets weak, the remote’s range drops, the system may fail to detect the fob, and you might see alerts like “NO KEY FOUND” or “KEY IN SLEEP MODE.” If left unattended, you could find yourself relying on the backup start method instead of the convenience of keyless access.

How to Replace the Battery

  1. Remove the Mechanical Key – Press the small release button on the side of the fob and slide out the mechanical key. Always press the button before pulling to avoid damaging the release mechanism.
    2. Removing the Mechanical Key
  2. Open the Battery Cover – Insert the mechanical key blade into the slot on the fob and gently twist to pop off the battery cover. Avoid using sharp metal tools that can scratch or damage the housing.
    3. Inserting the Key Blade
  3. Access the Battery – Locate the seal inside the compartment and pull the small tab to reveal the battery.
    4. Exposed Battery
  4. Remove the Old Battery – Lift the CR2450 out of its holder. Avoid touching the circuitry or using metal objects, as static discharge or scratches can harm the electronics.
  5. Install the New Battery – Place a fresh CR2450 coin cell in the slot with the negative side facing down.
  6. Reinstall the Seal – Press the seal back into the groove so the fob stays protected against dust and moisture.
  7. Close the Fob – Snap the battery cover securely into place and slide the mechanical key back into its slot until it clicks.

Why a New Battery Solves the Issue

The remote key communicates with the Corvette via a low-power signal. A weak battery can’t deliver the voltage needed for consistent transmission, causing range issues and detection failures. Installing a fresh battery restores full power, ensuring the fob works every time.

Important Step After Replacement

If your fob has been showing a low battery alert, replace it right away; don’t wait for it to fail completely. A simple, inexpensive battery swap can prevent situations where you can’t unlock the doors or start the car without using the emergency procedure.

Extra Tips for Longer Battery Life

  • Keep a spare CR2450 battery in your glovebox or center console.
  • Avoid storing the fob in high-heat areas like a dashboard or near engine heat, as it can shorten battery life.
  • Hold the fob away from other electronics, especially when starting the car, to avoid signal interference.
  • Handle the battery with clean, dry hands to avoid leaving residue on the contacts.

Take Action Now to Keep Your Corvette Ready

Your Corvette deserves to be ready at a moment’s notice — and so do you. Swap in a fresh CR2450 today and enjoy uninterrupted convenience. For more C8 maintenance tips, parts, and accessories, explore ACS Composite’s tech resources and Corvette care kits designed to keep your car in peak condition.

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