How to Change the Battery in Your Car Remote (Easy Guide)

Infographic showing tools and simple steps to replace a car remote battery: open the remote carefully, remove the old battery, insert the new one, snap it closed, and test it. Includes tips and contact details for Jay, Northriding Mobile Locksmith — 082 651 6416.

If your car remote is starting to feel “lazy” — shorter range, needing multiple presses, or not working at all — chances are the battery is on its way out. The good news? Swapping it is quick, cheap, and something most people can do at home.

What you’ll need

  • A new coin-cell battery (most remotes use CR2032 or CR2016 — check the old one first)
  • A small flat screwdriver or plastic pry tool
  • A clean surface so nothing gets lost

Step-by-step

  1. Open the remote
    Look for a tiny notch or seam along the edge. Gently twist with the screwdriver or pry tool. Don’t force it — slow and steady avoids cracked plastic.
  2. Remove the old battery
    Note how it sits (usually the “+” side faces up). Slide it out carefully.
  3. Fit the new battery
    Match the size and voltage exactly. Pop it in the same way the old one came out — “+” to “+”.
  4. Clip the remote back together
    Press around the edges until it clicks closed.
  5. Test it at the car
    Lock/unlock and make sure everything works.

Helpful tips

  • If it still doesn’t work, the remote may need re-programming or there could be another issue.
  • Avoid touching the battery faces with greasy fingers — it can shorten battery life.
  • Never mix old and new batteries.

If you’re unsure, stuck, or worried about breaking the remote, bring it to a professional — it usually takes just a few minutes and saves the hassle.

Want help? Just shout — always happy to sort it out 👍