The incident came to light last evening when the woman called for help near CMH Road alleging the driver misbehaved with her, police said.
They said the driver fled the spot, abandoning the cab as the woman shouted for help.
She had booked cab to Indiranagar from BTM Layout, police said, adding the vehicle has been seized and they were on the look out for the accused driver.
Meanwhile, Ola in a statement said it has "off-roaded" the vehicle of the operator and will extend support in probe into the matter.