Safety first: Use a ladder safely when adjusting antenna or keypad position.

Replace battery: Install a fresh battery in the Marantec keypad.
Relocate keypad: If mounted on metal or brick with metal lath, move it slightly or add a non‑metallic spacer to improve signal.
Extend antenna: Ensure the opener’s antenna wire is fully extended downward and not wrapped around metal.
Reduce interference: Move or shield strong RF sources (Wi‑Fi routers, LED fixtures) near the opener if possible.

Wireless keypad works only at very close range or intermittently.

Possible Causes