The German was struck down by the virus a few days ago, and the Renault team’s original schedule – to run him on the opening and final day of the test – has had to be revised, with team-mate Vitaly Petrov carrying the workload for the interim.
Renault has now issued a revised schedule that will see Hedfeld driving on the Thursday afternoon, before he has exclusive use of the R31 on the fourth and final day of the test.
“I thought I would be over it by now, but the cold will not go away,” he told Auto Motor und Sport.
“I didn’t feel good in the car in the morning,” he added, referring to the first day of testing, when his symptoms force him to withdraw from further running.
But despite his illness, Heidfeld feels positive about the latest upgrades the team has brought to this test.
“What I have tried already, felt alright,” he said.
[Original image via Sutton Images]