"We've reached an agreement with (Renault) team chief Flavio Briatore on all major issues," said Ralf's manager.
Brazilian Formula One driver Felipe Massa has said he knew that disgraced former Renault driver Nelson Piquet Junior had deliberately crashed his car and confronted him about it before it was exposed.
Fernando Alonso will race for Renault next season, the double world champion's Web site announced.
Formula One teams will meet FIA president Max Mosley Friday with champions Ferrari and other manufacturers threatening to walk away from the sport at the end of the season.
Former champions Renault followed Ferrari's lead on Wednesday and threatened to quit Formula One at the end of the season unless the governing body rewrites the 2010 rules. Champions Ferrari, Formula One's glamour team who have competed in every championship since 1950, issued a similar threat on Tuesday in response to the introduction of an optional 40 million pounds budget cap.
Former champions Renault and Williams unveiled their 2009 Formula One cars on Monday before testing at the new Algarve Motor Park circuit in southern Portugal.
Austrian test driver Alexander Wurz will replace Mark Webber in the Williams race line-up next season.
Renault should have given Frenchman Franck Montagny a chance to race in Formula One rather than drafting in Canadian Jacques Villeneuve, according to former champion Alain Prost.
Formula One champions Renault are interested in signing Ferrari's Michael Schumacher, his manager said.
With a third of the F1 season already wrapped up in white and neon green, here are a few facts we can glean from this insanely topsy-turvy year so far.
Formula One has lost another of its principals.
Briatore revealed that doctors had found the McLaren driver had no health problems other than the injury sustained in the accident. He claimed that he had seen video of the accident, which was not even that dramatic, insisting that the impact was not so hard.
Jenson Button hit back at Niki Lauda on Saturday after the Austrian Formula One great suggested the driver had told him he wanted to stay at McLaren next year and any uncertainty was about money.
The 45-year-old mum of four shared the news on Instagram.
News of all that's transpired on and off the football field