14 minutes after racing resumed, castroneves and nasr made contact, resulting in significant damage to the no. 7 penske's left-hand side intercooler, radiator and bodywork, necessitating its return to the garage. it returned 25 laps adrift of the leader and out of contention for the overall win. van der zande's no. 10 wayne taylor cadillac sustained another right-rear puncture, this time at high speed. team owner wayne taylor retired the car for driver safety reasons, uncertain of the cause of the problem, and he wanted to stop using spare bodywork parts. soon after, bomarito's no. 55 mazda retired at the west horseshoe due to an exhaust problem that led the car to catch fire. the fourth (and final) full course yellow was activated for 22 minutes when kyle masson put legge off the track; he ploughed through an advertising billboard and styrofoam blocks, littering debris on the circuit. legge narrowly avoided impacting masson's side. under caution, fittipaldi brought the no. 5 vehicle onto pit road to rectify an overnight cooling issue by removing the engine cover and adding water. this allowed conway back on the lead lap.