2004 audi a4 key fob battery replacement

Do you have problems locking and unlocking your car in Newport Beach using your Audi key fob? Do you see a key and battery symbol illuminated on your Audi dashboard? Your Audi key fob may need a battery replacement. With three types of Audi key fobs on the market, you'll need to know how to change your Audi key battery. Learn how to change a battery in an Audi key fob below with Audi Fletcher Jones! 

Audi Flip Key Fob Battery Replacement

For the Audi Flip key, you'll need one CR1620 battery. The battery is for sale at our parts center. Once you have the replacement battery, simply: 

• Separate the case into two halves using a flat screwdriver
• Set aside the side that has the flip metal key in it
• Separate the shell of the half you still have using the screwdriver
• Remove the battery, making sure to note the positive side of the battery
• Place the new battery in the housing
• Press the shell on until it snaps
• Put the two key halves back together.

Note: If your car doesn't recognize your key fob after you've changed the battery, insert the key into the driver's side door. Use the key to unlock and lock the door manually, then remove from the door and press the "unlock" button. 

Audi Smart Keyless Entry Remote Battery Replacement

You'll need one CR2032 battery for your Audi Smart Keyless Entry Remote. After that, you'll need to: 

• Locate the key release found in the chrome part of the key and use your thumb to press down
• Remove the metal key blade from the shell
• Grip the exposed plastic of the battery holder with your thumb and remove it from the key fob
• Remove the battery, making sure to note the positive side of the battery
• Replace it with a fresh battery, making sure the positive side is facing the plastic
• Add the battery holder back into the shell
• Reinsert the metal key into the shell

Audi Remote Battery Replacement 

This Audi key fob also requires one CR2032 battery. To change out the battery, you'll need to:

• Flip open the metal key
• Press the back cover of the key using a small screwdriver
• Pop up the back cover at the end of the keyfob
• Remove the back cover; the battery will be located inside
• Pull out the battery, making sure to pay attention to note the positive side of the battery
• Put a new battery in the back cover
• Place the back cover back on the Audi key fob

Get Help With Your Audi Needs in Costa Mesa!

Audi Fletcher Jones is just a short drive from Irvine, and we have teams dedicated to helping you with your service, shopping, and financing needs. If you have questions about how to change a battery in your Audi key fob, please reach out to us today!

If you’re anything like me, the battery died on your first key fob a long time ago, and then you switched to your second backup key fob and now its battery has run out too – so it’s well past time to change the batteries.

You could have the dealer do it, where I’ve heard estimates range between $80-150 per key…or you could do it yourself for about $5 in under 5 minutes. Needless to say, I took the later route, and I’m here to tell you it’s very easy to do – simply press in two tabs on the key, pop off the back cover, replace the battery, and then press the rear cover back into place. You’ll also need to re-program the key, which is as simple as turning the car on/off 5 times.

This article applies to any keys that look like the one pictured above, most notably the B7 platform Audi A4, S4 or RS4, which was produced from 2005.5-2008. Other Audi models from this date range also share the same key, and the instructions should apply to those models too (although reprogramming the key for your car may differ slightly), however I can’t confirm which other models this applies to.

Supplies Needed:

1. 1 CR2032 Battery (per key fob) – I purchased a 5 pack on Amazon for $5 which allowed me to replace the batteries on both of my key fobs as well as have a few extras for down the road, but you really only need 1 per key.
2. A small flat-head screwdriver – those for eyeglasses work great, but any screwdriver should be fine. A pen would probably work if you’re in a pinch, but be careful not to do anything that would leave a mark or print on the key.

Step 1 – Press in the tab located along the side of the battery where the key folds in using your small flat head screwdriver. You’ll want to press it hard enough that the back cover starts to pop out.

Step 2 – Press in the second tab, located on the bottom of the key. You’ll want to press hard enough that the rear cover is pretty much completely popped off, and then you can simply just remove the cover with your fingers.

Step 3 – Replace the battery, making sure the positive side of the battery is facing up.

Step 4 – Pop the rear cover back on the key fob, which can be done just by pressing the key back together (no tools needed)

Step 5 – You will probably need to reprogram the key. To do this simply insert your key into the car’s ignition, then turn it on/off 5 times (do not start the car, just turn it to the ON position right before a full start). This will reprogram the key.

What battery does an Audi a4 key fob take?