McLaren has explained the cause of Lando Norris' on-track stall during the second practice session in Monaco. An electrical fault was detected in the car, and the team worked through the night to resolve the issue.
During the early part of the session in Monte Carlo, Norris slowed his car exiting the tunnel and had to stop in the escape area near the Nouvelle Chicane. The driver exited the car following the incident.
To investigate the fault, the team worked in the garage on Friday evening, violating the curfew. As part of this effort, the wiring harness in Norris' car was replaced and the ESME package was renewed.
This marked McLaren's first curfew violation in the 2026 F1 season. Each team is allowed four exceptions throughout the championship.
Initial assessments suggested the problem might be related to the battery. Further examination revealed the fault was connected to an issue in the electrical system.
The incident drew attention following a similar technical problem that recently affected Mercedes driver George Russell in Canada. Mercedes stated they were investigating the details of their car's issue and that reaching a final conclusion would take time.
Another consequence for McLaren during the weekend was a fine. Officials determined that the CDS system button was covered with transparent tape for aerodynamic reasons, preventing track marshals from using it.
According to the stewards' report, the team admitted that the tape made it impossible to press the button manually. FIA representatives shared the view that this practice completely negated the purpose of the CDS system.
McLaren was fined 30,000 euros for this violation, with 10,000 euros of the fine suspended for 12 months.
With Norris' fault, McLaren faced both lost time and a penalty on Monaco day. The measures the team took to prevent the technical issue from recurring during the rest of the weekend remain a point of interest.