Special Tools - Electronic Devices - Remote Keyless Entry (RKE) Battery Tester

RST-422

To test the battery:

  1. Remove the key battery.
  2. Pull down the sliding holder on the battery tester.
  3. Place the key battery onto the sliding holder so that the positive side rests on the sliding holder.
  4. Push the sliding holder up until the battery touches the contactor on the tester. The voltage reading appears on the screen.
    Caution: The battery casing can be dented under pressure. Do not use excessive pressure when sliding the battery up against the contactor.
  5. Check the voltage reading on the tester.
    • Reinstall the battery in the key if the voltage reading is 2 volts or higher.
    • Discard the battery properly and replace it if the voltage reading is lower than 2 volts.