The 2020 Honda CR‑V key fob typically uses a CR2032 3-volt lithium coin cell. This is the standard replacement battery for the model year and is widely available at auto parts stores, drugstores, and supermarkets.
In this article, we outline the exact battery size, how to confirm it on your fob, and clear, step-by-step instructions for replacing the battery. We also cover common tips to ensure reliable performance and what to do if the fob still isn’t working after a replacement.
Battery type and confirmation
To confirm the correct battery size for your 2020 CR‑V fob, start with the most common specification and check the battery itself or your owner’s manual. The CR2032 is standard for most Honda key fobs from this era, but you should verify if you’re unsure or if you have a regional variant.
- Battery type: CR2032
- Voltage: 3V
- Form factor: Coin cell (approximately 20 mm diameter, 3.2 mm thick)
- Availability: Readily available at auto parts stores, pharmacies, and many supermarkets
- Notes: While CR2032 is typical, some markets or special editions may vary; always check the battery or manual if you’re uncertain
Knowing the correct size helps ensure you buy the right part the first time and avoid unnecessary trips to the store.
Replacing the battery
Replacing the battery is usually straightforward and can be done at home with basic tools. Before you begin, have a new CR2032 battery ready and work on a clean, stable surface to avoid losing small components.
- Remove the mechanical key: On the side of the fob, slide out the metal key to expose a seam along the housing.
- Open the key fob: Use a small flat-head screwdriver or a coin to gently pry apart the two halves along the seam. Work slowly to avoid damaging the plastic casing.
- Remove the old battery: Take out the CR2032, noting the orientation of the plus (+) side.
- Insert the new battery: Place the CR2032 with the plus (+) side facing up and ensure it sits flat and centered in the battery cavity.
- Reassemble and test: Snap the halves back together, reinsert the mechanical key, and test the remote by locking/unlocking from a short distance to verify proper operation.
If the fob still misbehaves after a fresh battery, the issue could be due to corrosion, a damaged circuit board, or a problem with the vehicle’s receiver. In that case, contact a Honda dealer or trusted automotive locksmith for diagnosis and service.
Extra tips and care
To maximize lifespan and reliability of your key fob, store it away from extreme heat, moisture, and magnets. Regularly inspecting the fob for signs of wear and avoiding exposing it to liquids can help prevent corrosion of the contacts. If you notice frequent misreads or intermittent performance, replacing the battery and ensuring a clean contact surface is a good first step before pursuing more advanced diagnostics.
Summary
For a 2020 Honda CR‑V, the typical key fob battery is a CR2032 3V lithium coin cell. Replacing it involves removing the mechanical key, opening the fob, swapping in a fresh CR2032 with the correct polarity, and reassembling. If issues persist after replacement, seek professional help to check for other faults in the fob or vehicle electronics.