How to Replace Batteries in Audi Car Keys

Written by jared ruplinger
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Remote keyless entry systems allow the operator of a vehicle to lock or unlock the doors of the vehicle without physically using a key to actuate the lock mechanism. Keyless entry systems typically operate by broadcasting a signal on a particular radio frequency that is picked up by a receiver in the vehicle. Some systems also allow an operator to do such things as start the engine, open and close the boot or sliding doors, or sound a panic alarm. The remote keyless entry transmitter is usually integrated into a key fob or makes up part of the key itself.

Skill level:
Moderately Easy

Things you need

  • Small flathead screwdriver or butter knife

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  1. 1

    Position your keyless entry key fob so that the Audi logo is facing upward.

  2. 2

    Place the tip of a flathead screwdriver in the indent where the two halves of the key fob's shell come together. While applying gentle pressure, twist the screwdriver or butter knife to push the two halves apart. Set aside the half containing the mechanical key switchblade assembly.

  3. 3

    Turn the half containing the electronic components onto its end so that the "inside" edge is facing upward. Carefully use your screwdriver or butter knife to separate the casing from the internal components.

  4. 4

    Locate the button batteries and carefully remove them from the transmitter. Pay special attention to the polarity of the batteries.

  5. 5

    Insert the replacement batteries into the transmitter in the same orientation as the original batteries. Carefully snap the casing back together over the transmitter component and slide the two halves of the key fob back together.

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