no funcionaban

weren't working

→ no
phrase Rare #54,472
weren't working Used for plural things that were not working or functioning.
SP: Las luces no funcionaban.
EN: The lights weren't working.

No funcionaban los frenos.

The brakes weren't working.

Los mandos del avión no funcionaban.

The plane's controls were not working.

Los faros de Sami no funcionaban.

Sami's headlights weren't working.