How to Replace the Battery in a 2015 Audi S4 Key Fob

How to Replace the Battery in a 2015 Audi S4 Key Fob

If your car key is not open doors perfectly, the battery most likely needs to be replaced. In this article, we explained how to open your car keyless entry remote and change your Audi key battery.

What type battery does 2015 Audi S4 remote key fob take

Prior to disassembly key fob make sure that you have all required tools and materials: 1xCR2032 battery and flat head screwdriver.
  • flat head screwdriver
  • 1xCR2032 battery

Step by step instruction

A button cell battery installed inside the your key fob. Open the key if it is in the keyless entry remote.

Gently try to pry apart your fob with hands or flat head screwdriver. Change 1xCR2032 battery with flat head screwdriver.

Replace old battery with new one CR2032. 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 fob’s case, make sure that all working fine by pressing buttons on key fob.

The last thing to do is put your cover back on fob. Delicately try to assemble the pieces together by hands from top to bottom. If your remote key fob body firmly closed, we done. If not, repeat the last step.

How to change the battery video guide

How to change SmartKey Key fob Battery on Audi A5 A3 A4 S4 S5 S6 Q5 Keyless entry IYZFBSB802

Still not working? Buy new one

Frequently Asked Questions

Remote key fob of Audi S4 require 1xCR2032 batteries. Price for CR2032 batteries are under $4-6 build upon the size packaging, type and brand you buy. You can take old battery to the store, to be sure.

Usually, after key battery change, you do not need to reprogram. Don't be scare of this procedure, because often it's described in user's manual.

Yes, you can change battery in your 2015 Audi S4 keyless entry remote yourself. Most difficult part is to disassembly fob’s case. It's pretty easy with our step by step guide.

Dealer service price for replace the battery in fob is $50-600 depending on the car.

You should replace batteries inside key fob of Audi S4 at least every three or four years. lifespan of battery vary on usage time, operating conditions and quality.

If your Audi need multiple clicks to unlock or lock doors, has low key battery indicator on dashboard, signal strength reduced or key fob buttons not working, in most cases battery replace in key fob needed. Installed battery is weak with a high probability, but if it's not fix problem, key fob replace or repair required.
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Fob Compatibility:

  1. FCC ID: IYZFBSB802
  2. Models: 2009-2015 Audi S4