The Mercedes team has been forced to end its first day of 2013 Formula 1 testing early after being hit by problems in the morning.
Nico Rosberg had managed just 11 laps with the new W04 before the car stopped on track, causing the second red flag of the day. Mercedes spent the morning trying to identify the problem and has announced that it will not be running any more on Tuesday.
"After identifying the cause of the problem, we will not be running again today while parts are modified ready for tomorrow," said a report by the team. The part which requires modification is the wiring loom where the electrical fault originated this morning."
Rosberg's new team-mate Lewis Hamilton is scheduled to make his on-track debut with the team on Wednesday.