The deal unites two of the world's largest car-parts suppliers with the company's existing backers, vehicle manufacturers Daimler, Audi and BMW. The trio purchased HERE from Nokia for €2.8 billion in 2015.
Bosch's and Continental's moves underscore an ongoing rivalry between traditional car makers and tech giants, as both seek to leapfrog each other by either developing or acquiring self-driving car technology.
Ahead of this year's CES in Las Vegas, Volkswagen announced a partnership with autonomous driving company Aurora. The US startup is led by Chris Urmson, the former CTO of Google's driverless car unit.