How to Open Your 2005 Audi A4 Key Fob & Change Battery

How to Open Your 2005 Audi A4 Key Fob & Change Battery

If your car key is not open doors properly, the battery probably must to be changed. It's not difficult to change the battery in your key fob with our ultimate guide. All tools, that you need is described below.

What type battery keyless entry remote require

Changing battery in key fob require one CR2032 battery and flat head screwdriver. Prepare these materials and tools before opening and make sure to match the type of your fob’s batteries.
  • 1xCR2032 battery
  • flat head screwdriver

Step by step instruction

Inside of your key fob installed tiny button cell battery. Open key first, and then try to pry apart the keyless entry remote.

Accurately try to open your fob with hands or flat head screwdriver. Replace one CR2032 battery with flat head screwdriver.

Get new battery and install it inside keyless entry fob's shell. Be sure to connect the battery the right way around in a circuit. Your remote key fob will not work if you connect battery wrong way.

Before assembling keyless entry fob's case, verify that all functions works by pressing buttons on remote key fob.

The last thing to do is put your cover back on fob. Delicately try to assemble the pieces in place by hands from top to bottom. Check your fob body for gaps. If it is not firmly closed try to repeat last step.

How to replace the battery video guide

How to replace your Audi A4 key battery and resync/program it to your car

Still not working? Buy new one

Frequently Asked Questions

Remote key fob of Audi A4 use 1xCR2032 batteries. Price for CR2032 batteries are under $5 depending on the brand, type and size packaging you buy. Take your old battery to the store, with you to find a proper replacement.

Keyless entry remote in most of cases do not require to be reprogrammed after battery replace. If your remote key fob not working, recheck new battery voltage. Otherwise, read user's manual or contact local dealer.

Replacing your keyless entry remote battery is simple to do in 2005 Audi A4. Most of car manufacturers think about customers and make a special hole for key fob disassembly.

Auto repair shop's price for change the battery in keyless entry remote is $50-600 depending on the brand.

Remote key fob batteries in Audi A4 should be replaced once in three or four years, also this will differ based on their amount of use and build quality. If your keyless entry remote reduced signal strength, you should replace batteries before it stop working and make problems for you.

If your car fob's battery more than 4 years old, has low key battery indicator on dashboard, signal strength reduced or key fob buttons not working, in most cases battery replace in keyless entry remote required. Currently installed battery is discharged with a high probability, but if it's not help, key replace or repair required.
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Fob Compatibility:

  1. FCC ID: MYT8Z0837231
  2. Models: 2002-2005 Audi A4