Initially, the plan was for Lowe to replace Brawn but the strategy shifted and Mercedes say
they now want Brawn to stay on,
but in a role they have yet to define.
However, the original idea behind Lowe's recruitment remains in place. That was to have him running the sporting and technical sides of the team and executive director (business) Toto Wolff in charge of the financial and political side.
Uncertainty about Brawn's position has led to speculation
about his leaving the team,
with reports in Germany linking him to a role at either McLaren or Honda, which will be McLaren's engine partner from 2015.
But Brawn - who was speaking to BBC Sport - said he was "not talking to McLaren or Honda".
He added: "We have quite a lot of ingredients to fit into the same pot and that's the difficulty so we're talking and discussing.
The Formula 1 career of Ross Brawn
"The team's in a great position. We've started the car early so I think the team will be in a very strong position but I just want to make sure that I'm fulfilling a role that I'm motivated by and want to do."
Brawn is one of the most highly regarded engineers in F1, having masterminded Michael Schumacher's seven world titles with Benetton and Ferrari and
Jenson Button's with Brawn in 2009.
BBC Sport understands he will not go to McLaren and that he would be reluctant to return to Honda because he was frustrated by a number of aspects of working for the Japanese company when he ran its F1 team in 2007-8 before it quit the sport.
Speculation linking Brawn to Williams is also understood to be wide of the mark.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.