Is your Nissan Altima key fob suddenly not working? Before you panic about expensive replacements, the most common culprit is often a dead battery. Replacing the battery in your Nissan Altima key fob is a straightforward process you can usually handle yourself, saving time and money. This guide will walk you through identifying the right battery and replacing it, ensuring you get back on the road quickly.
Identifying the Correct Battery for Your Nissan Altima Key Fob
Finding the right replacement battery is the first step. Nissan Altima key fobs typically use one of three battery types: CR2032, CR2025, or CR1620. To determine the exact battery your key fob requires, the most accurate method is to check your owner’s manual. Alternatively, you can open your key fob (instructions below) and visually inspect the battery currently inside – the battery type is usually printed directly on it.
These batteries are widely available and affordable. You can purchase replacement key fob batteries for your Nissan Altima online from retailers like Amazon or at most stores that sell batteries, such as auto parts stores (like AutoZone or Advance Auto Parts), drugstores, and even some grocery stores. The cost is generally quite low, typically under $6, making this a very economical fix.
Step-by-Step Guide to Nissan Altima Key Fob Battery Replacement
The process for opening your Nissan Altima key fob varies slightly depending on the model year. Here’s a breakdown for both newer and older models:
For Newer Nissan Altima Models:
- Locate the Hidden Key: Most newer Nissan Altima key fobs have a hidden mechanical key. Find the release button or latch on your key fob – it’s usually a small button or slider.
- Release and Remove the Hidden Key: Press the release and pull out the hidden key. This key slot is also used to open the key fob casing.
- Insert Key into Designated Slot: Look closely at the area where you removed the key. You’ll find a slot or notch. Insert the end of the mechanical key into this slot.
- Twist or Pry Gently: Gently twist the key or apply slight pressure to pry the key fob case open. The case should separate along the seam.
For Older Nissan Altima Models:
- Identify the Notch: Examine the edges of your older Nissan Altima key fob to locate a small notch or seam.
- Insert a Thin Object: Use a thin, flat object like a small flathead screwdriver or even the edge of a credit card.
- Pry Open the Case: Carefully insert the flat object into the notch and gently twist or pry to separate the two halves of the key fob case. Be careful not to apply excessive force to avoid damaging the plastic casing.
General Steps for Battery Replacement (All Models):
- Access the Circuit Board and Battery: Once the case is open, you’ll see the circuit board. Gently lift the circuit board to reveal the battery underneath.
- Note Battery Orientation: Before removing the old battery, carefully observe how it is positioned in the case. Take note of which side is facing up (usually indicated by a “+” sign). This ensures you install the new battery correctly.
- Remove the Old Battery: Carefully remove the old battery. You might be able to gently pry it out with your fingertip or the same flat object you used to open the case.
- Insert the New Battery: Place the new battery into the compartment, ensuring it’s oriented the same way as the old one (matching the “+” and “-” sides). Press down gently to ensure it’s securely seated.
- Close the Key Fob Case: Carefully snap the two halves of the key fob case back together until they are firmly closed.
- Test Your Key Fob: Press the buttons on your key fob to test its functionality. Try locking and unlocking your Nissan Altima remotely. If it works, you’ve successfully replaced the battery!
Troubleshooting and When to Consider Key Fob Replacement
If your Nissan Altima key fob still doesn’t work after replacing the battery, double-check the battery orientation and ensure the battery contacts are clean and making good contact. Sometimes, gently cleaning the contacts with a cotton swab can help.
If battery replacement doesn’t solve the problem, you might need to consider other issues. There are various types of key fobs, from standard remotes to smart keys, and more complex issues might require professional assistance or even a complete key fob replacement and reprogramming. If you suspect a more serious problem, it’s best to consult with a locksmith or your Nissan dealership for further diagnosis and solutions.
