Peugeot 208 Key Fob Battery Replacement: The Complete Step-by-Step Guide

Changing the battery in your Peugeot 208 key fob is a quick and simple maintenance task that can save you both time and money. A weak or dead key fob battery can cause issues such as failure to lock or unlock your car, intermittent remote response, or even total key failure. Let’s walk through a precise, expert-level guide on how to replace your Peugeot 208 key fob battery safely and efficiently.

Understanding Your Peugeot 208 Key Fob

The Peugeot 208 typically uses a flip-style remote key fob with an integrated transponder and remote control buttons. Depending on the model year, you might have one of the following:

• A classic flip key (with retractable blade)
• A smart proximity key (for push-start models)

Both types rely on a coin-cell battery to power the remote locking system. The mechanical blade will always work manually, but the remote functions rely entirely on the battery.

Signs the Key Fob Battery Is Dying

Watch out for these early warning signs:

• The remote range shortens — you need to be closer to the car for it to respond.
• The LED indicator light (if present) dims or stops flashing.
• Intermittent operation — sometimes it works, sometimes it doesn’t.
• The car doesn’t detect the key when using keyless entry or push start.

When you notice these symptoms, it’s time to replace the battery.

Battery Type and Tools You’ll Need

Battery Type

• CR2032 lithium coin cell battery (3V) — easily available at most supermarkets or online.

Tools Required

• Flat-head screwdriver (small or medium)
• Soft cloth or towel (to prevent scratching)
• New CR2032 battery

Safety Tips Before You Begin

• Work on a clean, flat surface to prevent losing small parts.
• Avoid metal-on-metal contact with the battery to prevent short circuits.
• Handle the new battery with dry, clean hands — oil or dirt can affect conductivity.
• Always ensure the battery is oriented correctly (positive side facing up).

Step-by-Step: How to Replace the Peugeot 208 Key Fob Battery

Here’s the complete replacement process for the Peugeot 208 flip key:

Step 1: Locate the Split Point

Find the small seam where the metal key and plastic shell meet (usually at the bottom near the Peugeot badge).

Step 2: Insert Your Screwdriver

Insert your flat-head screwdriver gently into the seam.
Twist lightly — you’ll feel a soft pop as the case separates.

Step 3: Remove the Battery Cover

Lift the top half of the shell carefully to expose the battery compartment.
Avoid pulling forcefully to prevent damage to the plastic clips.

Peugeot 208 Towing Capacity (All Years & Engines Explained in Detail)

Step 4: Take Out the Old Battery

Use the screwdriver to gently pry up the existing CR2032 battery.
Dispose of it properly (recycle lithium batteries safely).

Step 5: Insert the New Battery

Place the new CR2032 battery in the slot — positive (+) side up.
Press gently until it clicks into place.

Step 6: Reassemble the Key Fob

Align the two halves and press firmly until you hear a secure snap.
Check that the buttons press normally and the key flips freely.

Common Mistakes to Avoid

• Using the wrong battery type (CR2025 won’t fit properly).
• Forcing the case open — the clips can break easily.
• Installing the battery upside down — remote won’t power up.
• Touching the battery surface with greasy fingers — can cause corrosion.

How to Test the New Battery

After reassembling:

1. Press the lock/unlock button — check for immediate car response.
2. If the LED indicator is present, confirm it lights up brightly.
3. Test at a reasonable distance (10–15 meters).
4. Try the boot release button (if equipped) for confirmation.

Resetting the Peugeot 208 Key Fob (If Needed)

In rare cases, the remote might lose synchronization with your car after a battery change. To reset it:

1. Insert the key into the ignition (for non-keyless versions).
2. Turn to the ON position (don’t start the engine).
3. Hold the lock button for 10 seconds.
4. Turn off the ignition, remove the key, and test the buttons.

This re-syncs the key with your vehicle’s immobilizer and receiver system.

Troubleshooting Key Fob Issues After Battery Replacement

How Long Does the Battery Last?

A high-quality CR2032 battery generally lasts 2 to 3 years under normal usage.
However, frequent remote use or extreme temperatures can shorten its lifespan.

To maximize battery life:

• Store the key away from heat sources.
• Avoid pressing buttons accidentally when in your pocket.
• Use OEM-quality batteries rather than cheap alternatives.

What If the Key Fob Still Doesn’t Work?

If the remote remains unresponsive:

Peugeot 208 Towing Capacity (All Years & Engines Explained in Detail)

Mazda CX-5 Dimensions and Size Comparison: Complete Guide

• Check for battery compartment corrosion.
• Inspect the internal circuit board for moisture damage.
• Try another new battery to rule out manufacturing defects.
• If none of these work, the transmitter chip may have failed — a replacement key will be required.

Alternative Key Types in the Peugeot 208

Depending on the year and trim, your Peugeot 208 might use:

• Smart key (keyless entry/start) — uses the same CR2032 battery.
• Basic non-flip key — simpler design but same replacement process.

Even though designs vary slightly, the underlying battery replacement principle remains identical.

Cost of Peugeot 208 Key Fob Battery Replacement

Replacing the battery yourself is by far the most economical option.

When to Replace the Entire Key Fob

Replace the entire key if:

• The circuit board is cracked or water-damaged.
• Buttons are non-functional despite a new battery.
• The key housing is broken or won’t close properly.
• The car fails to recognize the key even after resyncing.

A new key fob (cut and programmed) costs between $150–$300, depending on your Peugeot dealership and model year.

Final Thoughts

Replacing the battery in your Peugeot 208 key fob is a straightforward DIY fix that restores convenience and prevents lockout frustrations. With just a screwdriver and a new CR2032 battery, you can complete the task in under five minutes. Always handle the components carefully, verify the battery polarity, and test thoroughly before reassembly.

FAQs

1. What battery does the Peugeot 208 key fob use?

The Peugeot 208 key fob uses a CR2032 3V lithium coin cell.

2. How long does it take to replace the battery?

It takes less than five minutes to complete the replacement process.

3. Does replacing the battery erase key programming?

No. The key remains paired with your vehicle — no reprogramming is needed.

Peugeot 208 Towing Capacity (All Years & Engines Explained in Detail)

Mazda CX-5 Dimensions and Size Comparison: Complete Guide

Mazda CX-5 Boot Space: Ultimate Guide to Capacity, Dimensions & Practicality

4. Can I use a CR2025 battery instead?

No. The CR2025 is thinner and may cause unreliable contact. Always use a CR2032.

5. What should I do if my key still doesn’t work after changing the battery?

Try re-syncing the key or inspect the fob’s internal contacts. If the problem persists, consult a dealer or auto locksmith.

If you want to know other articles similar to Peugeot 208 Key Fob Battery Replacement: The Complete Step-by-Step Guide you can visit the category Service and Parts.