The Briton, who qualified 12th after some troubled practice sessions, has had a new energy store and new control electronics fitted after qualifying.

These are the fourth elements of the season, and it means both he and Fernando Alonso now have one full new power unit remaining for the rest of the campaign.

The introduction of that final unit will likely depend on when Honda plans to introduce an upgrade, with it possible that developments could come for the Belgian Grand Prix.

McLaren's pace in Germany this weekend has not been as good as recent races, with neither Button nor Fernando Alonso making it through to Q3.

Racing director Eric Boullier put the weekend's showing down to struggles in getting the car in to the right set-up window.

"We couldn't find the right balance this weekend properly, and we have struggled all weekend so far," he said.

"I think you can see from the pace that a couple of tenths here is four or five positions, and I think we couldn't do a proper lap and exploit the full potential of the car."