"We recently received a small number of reports from riders who experienced stronger than anticipated braking force on the front wheel. Of great caution we proactively remove pedal assistant bikes from the service at present" The company said in a blog post.
About 3,000 bikes will be deducted from service and will be replaced by regular bikes. All in all, lifting about 20,000 bikes in the three cities, with a mix of electric and regular models.
"After a small number of reports and with great caution, we stop our electric bikes from servicing three markets. Security always comes first," spokesman Julie Wood said on Sunday.
The company said it has been "hard at work on a new pedal assistant bike" and the model will be rolled out soon.
Last year's lift became the largest bikeshare operator in the US when it bought Motivate, owners of New York Citi Bike and DC's Capital Bikeshare. who extended their pre-hire bikes to cities such as Chicago, Boston and Portland.
Lyft, which was released in March, has decided to end car ownership, mainly in the United States, with a variety of alternative transport options. In addition to riding and cycling, the company has expanded into carpooling and scooter rental.
The company beat its boss, Uber, to a stock exchange listing. According to the IPO prospect, Lyft's share of the US riding market increased to 39% in December 201
8 from 22% at the end of 2016.
Lyft's Wall Street debut is seen as a bellwether for the long list of billions of dollars tech startups are expected to be public later this year, including Pinterest, Slack, Postmates. Uber filed papers last week for what is expected to be the year's largest public offering.