Operation CHARM: Car repair manuals for everyone.
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Keyless Entry Transmitter: Service and Repair

Transmitter Battery Renewal



When a noticeable reduction in the effective range of the key-ring transmitter occurs, and the red and green LED's flash less brightly, battery renewal is required.

Note: If the transmitter batteries are removed for a period greater than two minutes, or a transmitter button is pressed whilst the batteries are removed, the transmitter will loose its rolling code synchronization and will need to be reprogrammed.

To renew the batteries, carefully prise off the circular battery cover with a slim blade and remove the twin disc battery cells. Hit two new cells with the side marked positive (+) uppermost. Refit the battery cover and click into place with light thumb pressure.