The Los Angeles Fire Department’s new RTX electric fire truck has returned to the dealership for repairs to the tank.

The vehicle was undergoing familiarization and testing activities Wednesday before being placed into service when water began leaking from the tank, according to Rosenbauer, the truck’s manufacturer.

Rosenbauer said in a statement that tank issues on new vehicles are not uncommon and service technicians are investigating the cause of the trouble. The story first surfaced in online videos showing water leaking from the truck.

Rosenbauer said the leak will not effect the driveline or electrical components in the vehicle. The next step for the truck, after repairs, is operational training in preparation for putting it into service.

The truck is billed as the first all-electric fire truck in America as it is designed to fully operate only on batteries.