McLaren breaks curfew to fix Norris's electrical issue in Monaco

McLaren used one of its four Friday night curfew exemptions in Monaco to fix the electrical issue that stopped Lando Norris's car in second practice. The team replaced the wiring harness and the Energy Store Main Enclosure (ESME) pack to prevent the reigning world champion from losing more critical track time at a circuit where confidence is everything.

Why it matters:

At Monaco, every lap is currency. Losing FP2 running hurts any driver, but for Norris it risks throwing off qualifying preparation at a track where grid position effectively decides the race. Confidence on the unforgiving street circuit is built through repetition, so missing out creates a deficit that's tough to erase before Saturday's crucial session.

The Details:

• Norris's car shut down on track during FP2, cutting short his evening and erasing valuable setup work.
• McLaren worked past the 10pm curfew to comprehensively address the fault, utilizing one of the four permitted annual exemptions.
• Engineers replaced the wiring harness and the ESME pack — the enclosure housing safety elements, sensors, and wiring — keeping the changes within Norris's component allocation to avoid penalties.
• Cadillac also broke curfew on Friday night, marking the first time the American squad has done so in Formula 1.

What's next:

Norris must make up for lost time in final practice ahead of a qualifying session that typically defines the Monaco race outcome. Rebuilding rhythm and trust in the car quickly will be essential if he is to secure a front-row start and keep his title defense on track at a venue where overtaking remains nearly impossible.