All tram services have been suspended until further notice after a fault was discovered.
West Metro Midland s have withdrawn the fleet of 21 trams from use on Friday (June 11) after the manufacturer identified an urgent issue.
The transport firm said they did not take the decision lightly and will be working with the manufacturer to resolve the fault as quickly as they can.
Passengers are being transferred on to buses in the meantime.
A West Metro Midlands statement read: “We are sorry that there will be no Metro services from 11 June until further notice.
“We have been informed by the vehicle manufacturer that they have identified a fault which is affecting some of our trams.
“As a precautionary measure, we have taken the decision to remove all 21 trams from service until all trams have been inspected.
“We are working alongside the manufacturer, CAF, to restore services as quickly as possible.”
Metro tickets and passes will be valid on the alternative modes of transport detailed below:
National Express bus service 74 between West Bromwich and Birmingham
National Express bus service 79 between Wolverhampton and West Bromwich
West Midlands Railway and Avanti train services between Wolverhampton and Birmingham
The statement added: “We sincerely apologise for any inconvenience that may be caused.
“This decision has not been taken lightly.
“Please be assured that every option has been fully considered to avoid suspending the service.”