How to Open Your 1998 Audi A4 Key Fob and Change Battery

How to Open Your 1998 Audi A4 Key Fob and Change Battery

Remote key fob allow easy access to your Audi. Once the keyless entry remote battery is weak you not to be able lock trunk or doors from distance. Below, we outlined how to disassembly your key fob and replace your Audi key battery.

What kind of battery remote key fob require

Before going to open keyless entry remote check all that you need: 2 CR1620 batteries and flat head screwdriver.
  • flat head screwdriver
  • 2xCR1620 batteries

Simple steps to replace the battery in your A4's keyless entry remote

A coin cell battery installed in the your remote key fob. Open the key if it is in the keyless entry remote. Your key fob key must be extracted with slide.

Accurately try to disassemble your fob with hands or flat head screwdriver. Remove two CR1620 batteries with flat head screwdriver.

Replace old batteries with new one CR1620. Every battery has a negative and positive side and if you put the wrong connector down, the charge cannot go into your circuit board and make it work. Check position on battery, by "+" mark.

When the new batteries installed, verify keyless entry remote functionality by pressing buttons. If all functions works, assemble your fob’s shell in reverse order.

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

Video of key disassembly

[HOW TO] Audi Shell Replacement Tutorial 1998-2005 - Complete

Still not working? Buy new one

Frequently Asked Questions

Key fob of Audi A4 use 2xCR1620 batteries. Price for CR1620 batteries are under $6 build upon the type, size packaging and brand you buy. Take your old battery to the store, to be sure.

Keyless entry remote in most of cases do not need to be reprogrammed after battery replace. If your keyless entry remote not working, recheck new battery voltage. If it is not help, read user's manual or contact local dealer.

Replacing your key fob battery is easy to do in 1998 Audi A4. Most of car manufacturers think of the customers and make a special hole for keyless entry remote disassembly.

The price to replace the battery in key is $50-600 depending on the brand and the service station.

You should change batteries inside remote key fob of modern cars at least once in 3-4 years. The lifetime of battery differ on their amount of use, operating conditions and quality.

These symptoms will alert you that it's perhaps time to change battery in your Audi A4: multiple clicks to unlock or lock doors required, low key battery indicator on dashboard, key fob buttons not working and signal strength reduced.
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Other Audi Models:

Fob Compatibility:

  1. FCC ID: MYT8Z0 837 231 | MZ2 410 819 6
  2. Models: 1997-2005 Audi A4